Science.gov

Sample records for sugar cane agroindustry

  1. Sugar Cane Magic.

    ERIC Educational Resources Information Center

    Mower, Nancy Alpert

    The booklet contains a story for middle-grade students which shows how the roles of men and women change through the years. The main characters are three sixth graders in Hawaii: one girl has Hawaiian ancestors, one girl has Japanese ancestors, and one boy has New England missionary ancestors. The children discover a magic stalk of sugar cane…

  2. Maufacture of raw cane sugar

    SciTech Connect

    Not Available

    1980-01-01

    Procedures used at the Pepeekeo Sugar Factory in Hawaii for producing commercial sugar, molasses and bagasse from harvested sugar cane are described. The molasses is marketed, the sugar is refined elsewhere, and the bagasse is burned to produce steam and electric power for the Pepeekeo plant. (LCL)

  3. Sugar Cane Nutrient Distribution Analysis

    NASA Astrophysics Data System (ADS)

    Zamboni, C. B.; da Silveira, M. A. G.; Gennari, R. F.; Garcia, I.; Medina, N. H.

    2011-08-01

    Neutron Activation Analysis (NAA), Molecular Absorption Spectrometry (UV-Vis), and Flame Photometry techniques were applied to measure plant nutrient concentrations of Br, Ca, Cl, K, Mn, N, Na and P in sugar-cane root, stalk and leaves. These data will be used to explore the behavior of element concentration in different parts of the sugar-cane to better understand the plant nutrient distribution during its development.

  4. Sugar Canes as Bioenergy Feedstocks

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The sugar cane crops currently being grown in the South can play a role in helping the United States meet its need for both renewable transportation fuel and food and feed. Research being conducted at the USDA’s Agricultural Research Service’s Sugarcane Research Laboratory at Houma, Louisiana is g...

  5. Handbook of cane sugar engineering

    SciTech Connect

    Hugot, E.

    1986-01-01

    The handbook has included the description of cane sugar manufacture, mills, diffusers, boilers and other factory machinery, calculation methods of capacity for every piece of equipment, and process and manufacturing techniques. This new edition has been revised and information that is either obsolete or of little interest has been deleted or shortened. Additions have been made in chapters dealing with recently developed equipment and a completely new chapter covers automation and data processing. Numerous figures, graphs, drawings, photographs, tables and formulae are provided.

  6. Irradiation of cane sugar spirit

    NASA Astrophysics Data System (ADS)

    de Souza, M. D. C. A.; Del Mastro, N. L.

    2000-03-01

    The present study deals with the effect of irradiation on the gas-chromatographic profile of irradiated cane sugar spirit irradiated in glass containers in the presence of oak chops with doses of 0-10 kGy. Volatile constituents were analyzed in a CG gas chromatographer with a flame ionization detector using a Megabore CG-745 column. The results are discussed considering the contribution of irradiation to the quality of the spirit and the contribution of the irradiated oak wood.

  7. Growing of sugar cane for energy

    SciTech Connect

    Humbert, R.P.

    1980-06-01

    The Brazilian alcohol program is reviewed and research into ways of increasing sugar cane yields discussed. Sugar cane varieties are being selected for their ''total sugars'' production. The effects of supplimentary applications of fertilizers and irrigations are being investigated. Time up to several months can be saved because in the growing of sugar cane for alcohol and cellulose it is not necessary to ripen the cane to convert most of the sugars to sucrose. The author feels that growing sugar cane for alcohol has a lot of potential for petroleum importing contries in the tropics. Smaller sugar mills, no longer economic for sugar production, can be economic for alcohol production as the energy requirements are far less.

  8. Improved molecular tools for sugar cane biotechnology.

    PubMed

    Kinkema, Mark; Geijskes, Jason; Delucca, Paulo; Palupe, Anthony; Shand, Kylie; Coleman, Heather D; Brinin, Anthony; Williams, Brett; Sainz, Manuel; Dale, James L

    2014-03-01

    Sugar cane is a major source of food and fuel worldwide. Biotechnology has the potential to improve economically-important traits in sugar cane as well as diversify sugar cane beyond traditional applications such as sucrose production. High levels of transgene expression are key to the success of improving crops through biotechnology. Here we describe new molecular tools that both expand and improve gene expression capabilities in sugar cane. We have identified promoters that can be used to drive high levels of gene expression in the leaf and stem of transgenic sugar cane. One of these promoters, derived from the Cestrum yellow leaf curling virus, drives levels of constitutive transgene expression that are significantly higher than those achieved by the historical benchmark maize polyubiquitin-1 (Zm-Ubi1) promoter. A second promoter, the maize phosphonenolpyruvate carboxylate promoter, was found to be a strong, leaf-preferred promoter that enables levels of expression comparable to Zm-Ubi1 in this organ. Transgene expression was increased approximately 50-fold by gene modification, which included optimising the codon usage of the coding sequence to better suit sugar cane. We also describe a novel dual transcriptional enhancer that increased gene expression from different promoters, boosting expression from Zm-Ubi1 over eightfold. These molecular tools will be extremely valuable for the improvement of sugar cane through biotechnology. PMID:24150836

  9. Sugar and energy cane date of planting effects on cane, sucrose, and fiber yields

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Energy cane is believed to have more vigor than sugar cane because energy cane contains a higher percentage of alleles from Saccharum spontaneum relative to Saccharum officinarum. This research was conducted to determine if planting date affects yields of both sugar and energy canes. Three sugar can...

  10. Developments in beet and cane sugar extraction

    SciTech Connect

    Iverson, C.; Schwartzberg, H.G.

    1984-01-01

    This paper reviews the various types of extractors used in the extraction of sugar from beet and sugar cane. The types of extractors described are as follows:- Countercurrent Screw - Conveyor Extractors, (Tower Extractors, Slope Extractors), Countercurrent Drag Chain Extractors, Multistage Cross-Flow Extractors, Trommel Extractors, Multistage Scroll Extractors, Diffustion Batteries. Reduced capital costs and power expenditures and slightly higher cane sugar yields can be obtained by combined milking and diffusion extraction as opposed to multi-stage milling. The mechanical reliability of the machinery is emphasized and special attention is given to extraction procedures. Nowadays the trend in beet and cane sugar extraction is toward the use of larger and larger units which helps minimize labor and capital costs per unit of product.

  11. 7 CFR 1435.304 - Beet and cane sugar allotments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Beet and cane sugar allotments. 1435.304 Section 1435... For Sugar § 1435.304 Beet and cane sugar allotments. (a) The allotment for beet sugar will be 54.35... overall allotment quantity. (c) A sugar beet processor allocated a share of the beet sugar allotment...

  12. 7 CFR 1435.304 - Beet and cane sugar allotments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Beet and cane sugar allotments. 1435.304 Section 1435... For Sugar § 1435.304 Beet and cane sugar allotments. (a) The allotment for beet sugar will be 54.35... overall allotment quantity. (c) A sugar beet processor allocated a share of the beet sugar allotment...

  13. 7 CFR 1435.304 - Beet and cane sugar allotments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Beet and cane sugar allotments. 1435.304 Section 1435... For Sugar § 1435.304 Beet and cane sugar allotments. (a) The allotment for beet sugar will be 54.35... overall allotment quantity. (c) A sugar beet processor allocated a share of the beet sugar allotment...

  14. Sugar markers in aerosol particles from an agro-industrial region in Brazil

    NASA Astrophysics Data System (ADS)

    Urban, R. C.; Alves, C. A.; Allen, A. G.; Cardoso, A. A.; Queiroz, M. E. C.; Campos, M. L. A. M.

    2014-06-01

    This work aimed to better understand how aerosol particles from sugar cane burning contribute to the chemical composition of the lower troposphere in an agro-industrial region of São Paulo State (Brazil) affected by sugar and ethanol fuel production. During a period of 21 months, we collected 105 samples and quantified 20 saccharides by GC-MS. The average concentrations of levoglucosan (L), mannosan (M), and galactosan (G) for 24-h sampling were 116, 16, and 11 ng m-3 respectively. The three anhydrosugars had higher and more variable concentrations in the nighttime and during the sugar cane harvest period, due to more intense biomass burning practices. The calculated L/M ratio, which may serve as a signature for sugar cane smoke particles, was 9 ± 5. Although the total concentrations of the anhydrosugars varied greatly among samples, the relative mass size distributions of the saccharides were reasonably constant. Emissions due to biomass burning were estimated to correspond to 69% (mass) of the sugars quantified in the harvest samples, whereas biogenic emissions corresponded to 10%. In the non-harvest period, these values were 44 and 27%, respectively, indicating that biomass burning is an important source of aerosol to the regional atmosphere during the whole year.

  15. 7 CFR 1435.304 - Beet and cane sugar allotments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Beet and cane sugar allotments. 1435.304 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.304 Beet and cane sugar allotments. (a) The allotment for beet sugar will be...

  16. 7 CFR 1435.304 - Beet and cane sugar allotments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Beet and cane sugar allotments. 1435.304 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.304 Beet and cane sugar allotments. (a) The allotment for beet sugar will be...

  17. 7 CFR 1435.305 - State cane sugar allotments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false State cane sugar allotments. 1435.305 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.305 State cane sugar allotments. (a) Hawaii and Puerto Rico will be allotted a...

  18. 7 CFR 1435.305 - State cane sugar allotments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false State cane sugar allotments. 1435.305 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.305 State cane sugar allotments. (a) Hawaii and Puerto Rico will be allotted a...

  19. 7 CFR 1435.305 - State cane sugar allotments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false State cane sugar allotments. 1435.305 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.305 State cane sugar allotments. (a) Hawaii and Puerto Rico will be allotted a...

  20. 7 CFR 1435.305 - State cane sugar allotments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false State cane sugar allotments. 1435.305 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.305 State cane sugar allotments. (a) Hawaii and Puerto Rico will be allotted a...

  1. 7 CFR 1435.305 - State cane sugar allotments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false State cane sugar allotments. 1435.305 Section 1435..., DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS SUGAR PROGRAM Flexible Marketing Allotments For Sugar § 1435.305 State cane sugar allotments. (a) Hawaii and Puerto Rico will be allotted a...

  2. VIEW OF MILL FROM KEKAHA ROAD, WITH SUGAR BIN, CANE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF MILL FROM KEKAHA ROAD, WITH SUGAR BIN, CANE CLEANING PLANT AND CRUSHING MILL TO THE FORE. VIEW FROM THE EAST - Kekaha Sugar Company, Sugar Mill Building, 8315 Kekaha Road, Kekaha, Kauai County, HI

  3. Sugar cane. Positive energy source for alcohol

    SciTech Connect

    Polack, J.A.; Birkett, H.S.; West, M.D.

    1981-06-01

    Sugar cane stands out as a renewable resource for fuel alcohol production, thanks to its unique, highly positive energy balance. It supplies its own processing fuel, bagasse. Net liquid fuel usage is only that consumed on the farm, amounting to a maximum of 0.3 volume per volume of ethanol produced. In some locations, the net liquid fuel consumption of the farm is as low as 0.12 volume/volume produced. This small debit may be offset by generating electric power and by foreseeable processing improvements. In view of the very favorable fuel balance for sugar cane, a decision to employ it as a renewable source of ethanol depends wholly on economic and political factors, which in turn are highly location-dependent.

  4. Composition of sugar cane, energy cane, and sweet sorghum suitable for ethanol production at Louisiana sugar mills.

    PubMed

    Kim, Misook; Day, Donal F

    2011-07-01

    A challenge facing the biofuel industry is to develop an economically viable and sustainable biorefinery. The existing potential biorefineries in Louisiana, raw sugar mills, operate only 3 months of the year. For year-round operation, they must adopt other feedstocks, besides sugar cane, as supplemental feedstocks. Energy cane and sweet sorghum have different harvest times, but can be processed for bio-ethanol using the same equipment. Juice of energy cane contains 9.8% fermentable sugars and that of sweet sorghum, 11.8%. Chemical composition of sugar cane bagasse was determined to be 42% cellulose, 25% hemicellulose, and 20% lignin, and that of energy cane was 43% cellulose, 24% hemicellulose, and 22% lignin. Sweet sorghum was 45% cellulose, 27% hemicellulose, and 21% lignin. Theoretical ethanol yields would be 3,609 kg per ha from sugar cane, 12,938 kg per ha from energy cane, and 5,804 kg per ha from sweet sorghum. PMID:20803247

  5. By-products of the cane sugar industry

    SciTech Connect

    Paturav, J.M.

    1989-01-01

    This book discussed the inroads made in the sugar trade by the increasing consumption of high fructose corn syrup and the rapidly decreasing U.S. sugar imports that have forced many cane sugar-producing countries to reconsider their development policy and give more attention to improved efficiency and a more productive utilization of cane sugar by-products. Changes in sugar technology are addressed and the general improvement of biotechnology is described.

  6. Cement replacement by sugar cane bagasse ash: CO2 emissions reduction and potential for carbon credits.

    PubMed

    Fairbairn, Eduardo M R; Americano, Branca B; Cordeiro, Guilherme C; Paula, Thiago P; Toledo Filho, Romildo D; Silvoso, Marcos M

    2010-09-01

    This paper presents a study of cement replacement by sugar cane bagasse ash (SCBA) in industrial scale aiming to reduce the CO(2) emissions into the atmosphere. SCBA is a by-product of the sugar/ethanol agro-industry abundantly available in some regions of the world and has cementitious properties indicating that it can be used together with cement. Recent comprehensive research developed at the Federal University of Rio de Janeiro/Brazil has demonstrated that SCBA maintains, or even improves, the mechanical and durability properties of cement-based materials such as mortars and concretes. Brazil is the world's largest sugar cane producer and being a developing country can claim carbon credits. A simulation was carried out to estimate the potential of CO(2) emission reductions and the viability to issue certified emission reduction (CER) credits. The simulation was developed within the framework of the methodology established by the United Nations Framework Convention on Climate Change (UNFCCC) for the Clean Development Mechanism (CDM). The State of São Paulo (Brazil) was chosen for this case study because it concentrates about 60% of the national sugar cane and ash production together with an important concentration of cement factories. Since one of the key variables to estimate the CO(2) emissions is the average distance between sugar cane/ethanol factories and the cement plants, a genetic algorithm was developed to solve this optimization problem. The results indicated that SCBA blended cement reduces CO(2) emissions, which qualifies this product for CDM projects. PMID:20493626

  7. Production of ethanol from sugar cane

    SciTech Connect

    Hayes, F.W.

    1982-04-20

    An integrated process is provided for producing ethanol from sugar cane. Harvested cane is chopped and shredded to provide a mass of fiber and juice which is digested in a first digester with a hemicellulase enzyme. Fibrous residue is separated by centrifuge and passed to a second digester for digestion with a mixed culture of a cellulase enzyme and an ethanol-producing culture. Fibrous residue from is pressed to provide a recycle juice extract and then burned to provide at least part of the heat energy requirement of the process. Juice extracts from digesters separated by centrifuges are combined, sterilized, flashed and passed to a fermentor for fermentation with an ethanol-producing microorganism. Ethanol is recovered from the process by separation utilizing a membrane.

  8. 1. Straighton view looking S at sugar cane crushing machinery ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Straight-on view looking S at sugar cane crushing machinery showing three-roll cane mill, single reduction gear, flywheel and steam engine. - Hacienda Azucarera la Igualdad, Sugar Mill Ruins & Steam Engine, PR Route 332, Guanica, Guanica Municipio, PR

  9. Agriculture: Bioconversion of sugar cane molasses

    SciTech Connect

    Simon, P.

    1999-09-29

    Auxein Corporation is demonstrating for commercial use an organic acid phytochelate, derived from what would otherwise be a discarded portion of sugar cane, that could increase the domestic sugar industry's profit margin from near zero to 7%. Along with helping a struggling industry, the phytochelate will bring substantial improvements to crop and tree production and greatly reduce the environmental threat posed by nitrogen-based fertilizers. Currently, the amount of fertilizer used produces harmful levels of run-off that contaminates ground water with unwanted nitrogen. By utilizing organic acid phytochelates, which assist plant growth by unlocking minerals stored in soil, fertilizer use can be dramatically reduced. This would improve crop yields, remove environmental threats to ground water, and cut fertilizer costs by as much as 50%.

  10. Maximizing the xylitol production from sugar cane bagasse hydrolysate by controlling the aeration rate

    SciTech Connect

    Silva, S.S.; Ribeiro, J.D.; Felipe, M.G.A.; Vitolo, M.

    1997-12-31

    Batch fermentations of sugar cane bagasse hemicellulosic hydrolysate treated for removing the inhibitors of the fermentation were performed by Candida guilliermondii FTI 20037 for xylitol production. The fermentative parameters agitation and aeration rate were studied aiming the maximization of xylitol production from this agroindustrial residue. The maximal xylitol volumetric productivity (0.87 g/L {center_dot} h) and yield (0.67 g/g) were attained at 400/min and 0.45 v.v.m. (K{sub L}a 27/h). According to the results, a suitable control of the oxygen input permitting the xylitol formation from sugar cane bagasse hydrolysate is required for the development of an efficient fermentation process for large-scale applications. 20 refs., 2 figs.

  11. Insights to the clarification of sugar cane juice expressed from sugar cane stalk and trash.

    PubMed

    Thai, C C D; Bakir, H; Doherty, W O S

    2012-03-21

    Processing of juice expressed from green sugar cane containing all the trash (i.e., tops and leaves, the nonstalk component) of the sugar cane plant during sugar manufacture has been reported to lead to poor clarified juice (CJ) quality. Studies of different liming techniques have been conducted to identify which liming technique gives the best clarification performance from juice expressed from green cane containing half of all trash extracted (GE). Results have shown that lime saccharate addition to juice at 76 °C either continuous or batchwise gives satisfactory settling rates of calcium phosphate flocs (50-70 cm/min) and CJ with low turbidity and minimal amounts of mineral constituents. Surprisingly, the addition of phosphoric acid (? 300 mg/kg as P?O?), prior to liming to reduce juice turbidity (? 80%), increased the Mg (? 101%) and Si (? 148%) contents particularly for clarified GE juices. The increase was not proportional with increasing phosphoric acid dose. The nature of the flocs formed, including the zeta potential of the particles by the different liming techniques, has been used to account for the differences in clarification performance. Differences between the qualities of the CJ obtained with GE juice and that of burnt cane juices with all trash extracted (BE) have been discussed to provide further insights into GE processing. PMID:22364593

  12. 21 CFR 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 3 2012-04-01 2012-04-01 false Chemicals for controlling microorganisms in cane... controlling microorganisms in cane-sugar and beet-sugar mills. Agents for controlling microorganisms in cane... used in the control of microorganisms in cane-sugar and/or beet-sugar mills as specified in...

  13. 21 CFR 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 3 2013-04-01 2013-04-01 false Chemicals for controlling microorganisms in cane... controlling microorganisms in cane-sugar and beet-sugar mills. Agents for controlling microorganisms in cane... used in the control of microorganisms in cane-sugar and/or beet-sugar mills as specified in...

  14. 21 CFR 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 3 2010-04-01 2009-04-01 true Chemicals for controlling microorganisms in cane... controlling microorganisms in cane-sugar and beet-sugar mills. Agents for controlling microorganisms in cane... used in the control of microorganisms in cane-sugar and/or beet-sugar mills as specified in...

  15. 29 CFR 516.18 - Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Employees employed in certain tobacco, cotton, sugar cane....18 Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are... cigar leaf tobacco, cotton, cottonseed, cotton ginning, sugar cane, sugar processing or sugar beets...

  16. 29 CFR 516.18 - Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Employees employed in certain tobacco, cotton, sugar cane....18 Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are... cigar leaf tobacco, cotton, cottonseed, cotton ginning, sugar cane, sugar processing or sugar beets...

  17. 29 CFR 516.18 - Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Employees employed in certain tobacco, cotton, sugar cane....18 Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are... cigar leaf tobacco, cotton, cottonseed, cotton ginning, sugar cane, sugar processing or sugar beets...

  18. 29 CFR 516.18 - Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 3 2012-07-01 2012-07-01 false Employees employed in certain tobacco, cotton, sugar cane....18 Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are... cigar leaf tobacco, cotton, cottonseed, cotton ginning, sugar cane, sugar processing or sugar beets...

  19. Sensory differences between beet and cane sugar sources.

    PubMed

    Urbanus, Brittany L; Cox, Ginnefer O; Eklund, Emily J; Ickes, Chelsea M; Schmidt, Shelly J; Lee, Soo-Yeun

    2014-09-01

    Research concerning the sensory properties of beet and cane sugars is lacking in the scientific literature. Therefore, the objectives of this research were to determine whether a sensory difference was perceivable between beet and cane sugar sources in regard to their (1) aroma-only, (2) aroma and taste without nose clips, and (3) taste-only with nose clips, and to characterize the difference between the sugar sources using descriptive analysis. One hundred panelists evaluated sugar samples using a tetrad test. A significant difference (P < 0.05) was identified between beet and cane sugar sources when evaluated by aroma-only and taste and aroma without nose clips. However, there was no difference when tasted with nose clips. To characterize the observed differences, ten trained panelists identified and quantified key sensory attributes of beet and cane sugars using descriptive analysis. Analysis of variance indicated significant differences (P < 0.05) between sugar samples for 8 of the 10 attributes including: off-dairy, oxidized, earthy, and barnyard aroma, fruity and burnt sugar aroma-by-mouth, sweet aftertaste, and burnt sugar aftertaste. The sensory profile of beet sugar was characterized by off-dairy, oxidized, earthy, and barnyard aromas and by a burnt sugar aroma-by-mouth and aftertaste, whereas cane sugar was characterized by a fruity aroma-by-mouth and sweet aftertaste. This study shows that beet and cane sugar sources can be differentiated by their aroma and provides a sensory profile characterizing the differences. As sugar is used extensively as a food ingredient, sensory differences between beet and cane sugar sources once incorporated into different product matrices should be studied as a next step. PMID:25124655

  20. 76 FR 36512 - USDA Increases the Domestic Sugar Overall Allotment Quantity, Reassigns Domestic Cane Sugar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-22

    ... Office of the Secretary USDA Increases the Domestic Sugar Overall Allotment Quantity, Reassigns Domestic Cane Sugar Allotments, and Increases the Fiscal Year 2011 Raw Sugar Tariff-Rate Quota AGENCY: Office of... in the domestic sugar Overall Allotment Quantity (OAQ); a reassignment of surplus sugar...

  1. Clastogenicity of landfarming soil treated with sugar cane vinasse.

    PubMed

    da Silva Souza, Tatiana; Hencklein, Fabiana Aparecida; de Franceschi de Angelis, Dejanira; Fontanetti, Carmem Silvia

    2013-02-01

    The addition of nutrients and/or soil bulking agents is used in bioremediation to increase microbial activity in contaminated soils. For this purpose, some studies have assessed the effectiveness of vinasse in the bioremediation of soils contaminated with petroleum waste. The present study was aimed at investigating the clastogenic/aneugenic potential of landfarming soil from a petroleum refinery before and after addition of sugar cane vinasse using the Allium cepa bioassay. Our results show that the addition of sugar cane vinasse to landfarming soil potentiates the clastogenic effects of the latter probably due the release of metals that were previously adsorbed into the organic matter. These metals may have interacted synergistically with petroleum hydrocarbons present in the landfarming soil treated with sugar cane vinasse. We recommend further tests to monitor the effects of sugar cane vinasse on soils contaminated with organic wastes. PMID:22580848

  2. Plant for getting more sugar out of a cane crop

    SciTech Connect

    Perdomo, R.E.; Despradel, J.O.; Arceneaux, G.

    1982-04-01

    A crop of sugar cane consists of several important varieties, each with different qualities affecting vegetative growth and maturity. A study recently conducted at Central Romana in the Dominican Republic has revealed differences between yield curves of sugar cane varieties in local culture and a method has been developed for a practical application of results. This paper briefly summarizes the essential findings and outlines its practical applications.

  3. 21 CFR 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 3 2014-04-01 2014-04-01 false Chemicals for controlling microorganisms in cane... HUMAN CONSUMPTION Specific Usage Additives § 173.320 Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills. Agents for controlling microorganisms in cane-sugar and beet-sugar mills...

  4. Sugar Cane: A Bitter-Sweet Legacy. A Study of the Disappearing African-American Worker on the Sugar Cane Plantations in Southern Louisiana.

    ERIC Educational Resources Information Center

    Jones, John A., Jr.; And Others

    This resource/study guide is designed to accompany the instructional video, "Sugar Cane: A Bitter-Sweet Legacy," which explores the significance of cultivating, harvesting, and refining sugar cane. It is also a brief study of the disappearing African-American workers on the sugar cane plantations in southern Louisiana. Seven main ideas are…

  5. Sugar Cane: A Bitter-Sweet Legacy. A Study of the Disappearing African-American Worker on the Sugar Cane Plantations in Southern Louisiana.

    ERIC Educational Resources Information Center

    Jones, John A., Jr.; And Others

    This resource/study guide is designed to accompany the instructional video, "Sugar Cane: A Bitter-Sweet Legacy," which explores the significance of cultivating, harvesting, and refining sugar cane. It is also a brief study of the disappearing African-American workers on the sugar cane plantations in southern Louisiana. Seven main ideas are…

  6. 75 FR 53013 - Fiscal Year 2011 Tariff-rate Quota Allocations for Raw Cane Sugar, Refined and Specialty Sugar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-30

    ... TRADE REPRESENTATIVE Fiscal Year 2011 Tariff-rate Quota Allocations for Raw Cane Sugar, Refined and Specialty Sugar, and Sugar-containing Products; Revision AGENCY: Office of the United States Trade... allocations of raw cane sugar, refined and special sugar, and sugar-containing products. USTR is revising...

  7. 21 CFR 173.320 - Chemicals for controlling microorganisms in cane-sugar and beet-sugar mills.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...-sugar and beet-sugar mills. 173.320 Section 173.320 Food and Drugs FOOD AND DRUG ADMINISTRATION... controlling microorganisms in cane-sugar and beet-sugar mills. Agents for controlling microorganisms in cane-sugar and beet-sugar mills may be safely used in accordance with the following conditions: (a) They...

  8. 76 FR 62339 - Domestic Sugar Program-2011-Crop Cane Sugar and Beet Sugar Marketing Allotments and Company...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-07

    ... Commodity Credit Corporation Domestic Sugar Program--2011-Crop Cane Sugar and Beet Sugar Marketing... marketing allotments and company allocations to sugarcane and sugar beet processors, which apply to all... establishing, adjusting, or suspending sugar marketing allotments in the Federal Register. FOR...

  9. Seasonal hydroclimatic impacts of Brazilian sugar cane expansion

    NASA Astrophysics Data System (ADS)

    Georgescu, M.; Lobell, D. B.; Field, C. B.; Mahalov, A.

    2012-12-01

    Brazil is the leading producer of sugar cane in the world with roughly half used for ethanol production. Because of suitable climatic growing conditions, the majority of biofuel production is derived from sugar plantations in southeastern states. Anticipated increases in global demand for biofuels are expected to lead to future sugar cane expansion extending into Brazilian pasturelands and native cerrado. Prior to undergoing large-scale expansion an evaluation of impacts on the region's hydroclimate is warranted. Using a suite of multi-year ensemble-based simulations with the WRF modeling system, we quantify hydroclimatic consequences of sugar cane expansion across portions of south-central Brazil. Conversion from current land use to sugar cane causes opposing seasonal impacts on near-surface temperature. Proggresively greater cooling is simulated during the course of the growing season, followed by an abrupt warming shift post-harvest. Although seasonal impacts on near-surface temperature are significant, with cooling of 1C occurring during the peak of the growing season followed by warming of similar magnitude, impacts are small when annually averaged. Ensemble mean differences between the imposed sugar cane expansion and non-expansion scenario are suggestive of a drying precipitation trend, yet large uncertainty among individual members precludes definitive statements about impacts on the region's rainfall.

  10. Methods of alcohol production available to the cane sugar refiner

    SciTech Connect

    Bennett, M.C.

    1981-11-01

    The three methods of fermenting sugar feedstocks, namely, batch, batch recycle and continuous culture are described. With the current emphasis on fuel alcohol from sugar cane products, new techniques for dealing with the effuent stillage are required. Other areas for improvement include the fermentation process itself and the various distillation methods. New technology in these areas together with the economic considerations involved are reviewed.

  11. 40 CFR 409.30 - Applicability; description of the liquid cane sugar refining subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... liquid cane sugar refining subcategory. 409.30 Section 409.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Liquid Cane Sugar Refining Subcategory § 409.30 Applicability; description of the liquid cane sugar...

  12. 40 CFR 409.30 - Applicability; description of the liquid cane sugar refining subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... liquid cane sugar refining subcategory. 409.30 Section 409.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Liquid Cane Sugar Refining Subcategory § 409.30 Applicability; description of the liquid cane sugar...

  13. 40 CFR 409.30 - Applicability; description of the liquid cane sugar refining subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... liquid cane sugar refining subcategory. 409.30 Section 409.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Liquid Cane Sugar Refining Subcategory § 409.30 Applicability; description of the liquid cane sugar...

  14. 40 CFR 409.30 - Applicability; description of the liquid cane sugar refining subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... liquid cane sugar refining subcategory. 409.30 Section 409.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Liquid Cane Sugar Refining Subcategory § 409.30 Applicability; description of the liquid cane sugar...

  15. 40 CFR 409.30 - Applicability; description of the liquid cane sugar refining subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... liquid cane sugar refining subcategory. 409.30 Section 409.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Liquid Cane Sugar Refining Subcategory § 409.30 Applicability; description of the liquid cane sugar...

  16. Cane-sugar feeding in Culex pipiens fatigans*

    PubMed Central

    de Meillon, Botha; Sebastian, Anthony; Khan, Z. H.

    1967-01-01

    The relatively poor results that have been obtained in controlling or eradicating Culex pipiens fatigans, the urban vector of Wuchereria bancrofti, have made it necessary to obtain as much information as possible about its biology. In this paper the unexpected finding of the influence of cane sugar in delaying oviposition in the gravid female is reported. This is an important finding for those who are investigating the biology of this mosquito in the laboratory and who make use of the age-old practice of keeping adult mosquitos alive by feeding them cane sugar. It is also reported that under certain conditions extensive cane-sugar feeding takes place in nature and it seems possible that this habit may have unsuspected repercussions on behaviour and physiology beyond the confines of the laboratory. One possible development would be the isolation of the attractant present in unrefined sugars and its use in traps in order to assess mosquito populations in the field. PMID:5298676

  17. Sugar cane stillage: a potential source of natural antioxidants.

    PubMed

    Caderby, Emma; Baumberger, Stéphanie; Hoareau, William; Fargues, Claire; Decloux, Martine; Maillard, Marie-Noëlle

    2013-11-27

    Biorefinery of sugar cane is the first economic activity of Reunion Island. Some sugar cane manufactured products (juice, syrup, molasses) have antioxidant activities and are sources of both phenolic compounds and Maillard Reaction Products (MRP). The study aimed to highlight the global antioxidant activity of sugar cane stillage and understand its identity. Chromatographic fractionation on Sephadex LH-20 resin allowed the recovery of a MRP-rich fraction, responsible for 58 to 66% of the global antioxidant activity according to the nature of the sugar cane stillage (DPPH test), and a phenolic compounds-rich fraction for 37 to 59% of the activity. A good correlation was recorded between the antioxidant activity of the sugar cane stillage and its content in total reducing compounds amount (Folin-Ciocalteu assay), among them 2.8 to 3.9 g/L of phenolic compounds (in 5-caffeoylquinic acid equivalent). Preliminary experiments by HPLC-DAD-MS allowed to identify several free phenolic acids and gave clues to identify esters of quinic acids. PMID:24228787

  18. Cane production for sugar and electric power in Jamaica

    SciTech Connect

    Not Available

    1984-10-01

    The principal conclusion of the report is that the Jamaican sugar industry can be made profitable. Although sugar has been grown in Jamaica for centuries, a combination of circumstances, including declining world sugar prices and a severe shortage of foreign exchange, have undermined the economic viability of the government-owned sugar estates. As a result, they have become a burden to the economy. With proper management, cane can become a highly attractive source of fuel for the generation of electricity while at the same time producing sugar and molasses.

  19. Process Integration of Bioethanol from Sugar Cane and Hydrogen Production

    NASA Astrophysics Data System (ADS)

    Hernandez, L.; Kafarov, V.

    In this study several alternatives for process integration of bioethanol from sugar cane and hydrogen production were evaluated. Bioethanol was produced above all in the fermentation of sweetened juice from sugar cane, stillage was removed. Stillage and bagasse are the process byproducts. The bioethanol steam reforming is an endothermic catalytic process when vaporized ethanol and steam are fed using a 1:6 molar ratio to reformer with a Ni-catalyst at atmospheric pressure and 350xC. Taking into account the processes properties mentioned above, it is possible to integrate the bioethanol production from sugar cane and its reforming by using byproducts like bagasse and stillage and to produce energy for steam reforming and bioethanol solution concentration by direct firing (for bagasse) or anaerobic digestion to get methane (for stillage).

  20. Aspects of occupational health in the sugar cane industry.

    PubMed

    Phoolchund, H N

    1991-01-01

    Workers in developing countries face as many, if not more, work-related health problems as their counterparts in industrialized nations. This paper concentrates on occupational health problems in the sugar industry, which exists in 40 countries, mostly in the Third World. Sugar cane workers have a high level of occupational accidents and are exposed to the high toxicity of pesticides. They may also have an increased risk of lung cancer, possibly mesothelioma. This may be related to the practice of burning foliage at the time of cane-cutting. Bagassosis is also a problem specific to the industry as it may follow exposure to bagasse (a by-product of sugar cane). The workers may also be affected by chronic infections which reduce their productivity. The legal framework for their protection is often inadequate. In conclusion, areas of future research are suggested. PMID:1921344

  1. 40 CFR 409.20 - Applicability; description of the crystalline cane sugar refining subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... crystalline cane sugar refining subcategory. 409.20 Section 409.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Crystalline Cane Sugar Refining Subcategory § 409.20 Applicability; description of the crystalline cane...

  2. 40 CFR 409.20 - Applicability; description of the crystalline cane sugar refining subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... crystalline cane sugar refining subcategory. 409.20 Section 409.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Crystalline Cane Sugar Refining Subcategory § 409.20 Applicability; description of the crystalline cane...

  3. 40 CFR 409.40 - Applicability; description of the Louisiana raw cane sugar processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Louisiana raw cane sugar processing subcategory. 409.40 Section 409.40 Protection of Environment... CATEGORY Louisiana Raw Cane Sugar Processing Subcategory § 409.40 Applicability; description of the Louisiana raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  4. 40 CFR 409.80 - Applicability; description of the Puerto Rican raw cane sugar processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Puerto Rican raw cane sugar processing subcategory. 409.80 Section 409.80 Protection of Environment... CATEGORY Puerto Rican Raw Cane Sugar Processing Subcategory § 409.80 Applicability; description of the Puerto Rican raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  5. 40 CFR 409.80 - Applicability; description of the Puerto Rican raw cane sugar processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Puerto Rican raw cane sugar processing subcategory. 409.80 Section 409.80 Protection of Environment... CATEGORY Puerto Rican Raw Cane Sugar Processing Subcategory § 409.80 Applicability; description of the Puerto Rican raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  6. 40 CFR 409.70 - Applicability; description of the Hawaiian raw cane sugar processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Hawaiian raw cane sugar processing subcategory. 409.70 Section 409.70 Protection of Environment... CATEGORY Hawaiian Raw Cane Sugar Processing Subcategory § 409.70 Applicability; description of the Hawaiian raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  7. 40 CFR 409.40 - Applicability; description of the Louisiana raw cane sugar processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Louisiana raw cane sugar processing subcategory. 409.40 Section 409.40 Protection of Environment... CATEGORY Louisiana Raw Cane Sugar Processing Subcategory § 409.40 Applicability; description of the Louisiana raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  8. 40 CFR 409.70 - Applicability; description of the Hawaiian raw cane sugar processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Hawaiian raw cane sugar processing subcategory. 409.70 Section 409.70 Protection of Environment... CATEGORY Hawaiian Raw Cane Sugar Processing Subcategory § 409.70 Applicability; description of the Hawaiian raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  9. 40 CFR 409.40 - Applicability; description of the Louisiana raw cane sugar processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Louisiana raw cane sugar processing subcategory. 409.40 Section 409.40 Protection of Environment... CATEGORY Louisiana Raw Cane Sugar Processing Subcategory § 409.40 Applicability; description of the Louisiana raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  10. 40 CFR 409.40 - Applicability; description of the Louisiana raw cane sugar processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Louisiana raw cane sugar processing subcategory. 409.40 Section 409.40 Protection of Environment... CATEGORY Louisiana Raw Cane Sugar Processing Subcategory § 409.40 Applicability; description of the Louisiana raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  11. 40 CFR 409.80 - Applicability; description of the Puerto Rican raw cane sugar processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Puerto Rican raw cane sugar processing subcategory. 409.80 Section 409.80 Protection of Environment... CATEGORY Puerto Rican Raw Cane Sugar Processing Subcategory § 409.80 Applicability; description of the Puerto Rican raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  12. 40 CFR 409.70 - Applicability; description of the Hawaiian raw cane sugar processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Hawaiian raw cane sugar processing subcategory. 409.70 Section 409.70 Protection of Environment... CATEGORY Hawaiian Raw Cane Sugar Processing Subcategory § 409.70 Applicability; description of the Hawaiian raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  13. 40 CFR 409.80 - Applicability; description of the Puerto Rican raw cane sugar processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Puerto Rican raw cane sugar processing subcategory. 409.80 Section 409.80 Protection of Environment... CATEGORY Puerto Rican Raw Cane Sugar Processing Subcategory § 409.80 Applicability; description of the Puerto Rican raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  14. 40 CFR 409.70 - Applicability; description of the Hawaiian raw cane sugar processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Hawaiian raw cane sugar processing subcategory. 409.70 Section 409.70 Protection of Environment... CATEGORY Hawaiian Raw Cane Sugar Processing Subcategory § 409.70 Applicability; description of the Hawaiian raw cane sugar processing subcategory. The provisions of this subpart are applicable to...

  15. 40 CFR 409.20 - Applicability; description of the crystalline cane sugar refining subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... crystalline cane sugar refining subcategory. 409.20 Section 409.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Crystalline Cane Sugar Refining Subcategory § 409.20 Applicability; description of the crystalline cane...

  16. 40 CFR 409.20 - Applicability; description of the crystalline cane sugar refining subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... crystalline cane sugar refining subcategory. 409.20 Section 409.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Crystalline Cane Sugar Refining Subcategory § 409.20 Applicability; description of the crystalline cane...

  17. 40 CFR 409.20 - Applicability; description of the crystalline cane sugar refining subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... crystalline cane sugar refining subcategory. 409.20 Section 409.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Crystalline Cane Sugar Refining Subcategory § 409.20 Applicability; description of the crystalline cane...

  18. 29 CFR 516.18 - Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who are partially exempt from overtime pay requirements pursuant to section 7....18 Employees employed in certain tobacco, cotton, sugar cane or sugar beet services, who...

  19. Clarification properties of trash and stalk tissues from sugar cane.

    PubMed

    Eggleston, Gillian; Grisham, Michael; Antoine, April

    2010-01-13

    The effect of the U.S. and worldwide change from burnt to unburnt (green) sugar cane harvesting on processing and the use of sugar cane leaves and tops as a biomass source has not been fully characterized. Sugar cane whole-stalks were harvested from the first ratoon (repeat) crop of five commercial, Louisiana sugar cane varieties (LCP 85-384, HoCP 96-540, L 97-128, L 99-226, and L 99-233). Replicated sample tissues of brown, dry leaves (BL), green leaves (GL), growing point region (GPR), and stalk (S) were separated. Composite juice from each tissue type was clarified following a hot lime clarification process operated by most U.S. factories. Only GPR and GL juices foamed on heating and followed the normal settling behavior of factory sugar cane juice, although GL was markedly slower than GPR. GPR juice aided settling. S juice tended to thin out rather than follow normal settling and exhibited the most unwanted upward motion of flocs. Most varietal variation in settling, mud, and clarified juice (CJ) characteristics occurred for GL. The quality rather than the quantity of impurities in the different tissues mostly affected the volume of mud produced: After 30 min of settling, mud volume per unit tissue juice degrees Brix (% dissolved solids) varied markedly among the tissues (S 1.09, BL 11.3, GPR 3.0, and GL 3.1 mL/degrees Brix). Heat transfer properties of tissue juices and CJs are described. Clarification was unable to remove all BL cellulosic particles. GL and BL increased color, turbidity, and suspended particles in CJs with BL worse than GL. This will make the future attainment of very high pol (VHP) raw sugar in the U.S. more difficult. Although optimization of factory unit processes will alleviate extra trash problems, economical strategies to reduce the amount of green and brown leaves processed need to be identified and implemented. PMID:19994855

  20. Payback time for soil carbon and sugar-cane ethanol

    NASA Astrophysics Data System (ADS)

    Mello, Francisco F. C.; Cerri, Carlos E. P.; Davies, Christian A.; Holbrook, N. Michele; Paustian, Keith; Maia, Stoécio M. F.; Galdos, Marcelo V.; Bernoux, Martial; Cerri, Carlos C.

    2014-07-01

    The effects of land-use change (LUC) on soil carbon (C) balance has to be taken into account in calculating the CO2 savings attributed to bioenergy crops. There have been few direct field measurements that quantify the effects of LUC on soil C for the most common land-use transitions into sugar cane in Brazil, the world's largest producer . We quantified the C balance for LUC as a net loss (carbon debt) or net gain (carbon credit) in soil C for sugar-cane expansion in Brazil. We sampled 135 field sites to 1 m depth, representing three major LUC scenarios. Our results demonstrate that soil C stocks decrease following LUC from native vegetation and pastures, and increase where cropland is converted to sugar cane. The payback time for the soil C debt was eight years for native vegetation and two to three years for pastures. With an increasing need for biofuels and the potential for Brazil to help meet global demand, our results will be invaluable for guiding expansion policies of sugar-cane production towards greater sustainability.

  1. Potential for generation of public electricity in cane sugar factories

    SciTech Connect

    Torisson, T.

    1984-04-01

    Sugar cane is the most efficient crop for the conversion of solar energy into biomass. The possibility of conservation of energy in cane sugar producing countries by substituting bagasse for imported oil, was studied in Guyana, South America and financed by the World Bank. The concept of cogeneration was considered, where the heat energy generated by burning bagasse of high fiber content is converted into steam and used both for electricity generation and generation of internal power. Several methods of achieving energy efficiency in this process were discussed such as efficient generation and use of the steam by using high pressure boilers, drying and pelletization of bagasse, and using sugar cane trash as fuel. About 40% of the bagasse could be available for the generation of electric energy. A method for evaluation of the power potential showed that the quantity of public electricity produced, depended on certain important process parameters, fiber content, steam conditions and process steam. The cost effectiveness of the project increases with increasing fiber content in the sugar cane.

  2. Sugar cane and sugar beet molasses, antioxidant-rich alternatives to refined sugar.

    PubMed

    Valli, Veronica; Gómez-Caravaca, Ana María; Di Nunzio, Mattia; Danesi, Francesca; Caboni, Maria Fiorenza; Bordoni, Alessandra

    2012-12-26

    Molasses, the main byproduct of sugar production, is a well-known source of antioxidants. In this study sugar cane molasses (SCM) and sugar beet molasses (SBM) were investigated for their phenolic profile and in vitro antioxidant capacity and for their protective effect in human HepG2 cells submitted to oxidative stress. According to its higher phenolic concentration and antioxidant capacity in vitro, SCM exhibited an effective protection in cells, comparable to or even greater than that of ?-tocopherol. Data herein reported emphasize the potential health effects of molasses and the possibility of using byproducts for their antioxidant activity. This is particularly important for consumers in developing countries, as it highlights the importance of consuming a low-price, yet very nutritious, commodity. PMID:23190112

  3. Does information about sugar source influence consumer liking of products made with beet and cane sugars?

    PubMed

    Urbanus, Brittany L; Schmidt, Shelly J; Lee, Soo-Yeun

    2014-11-01

    Beet sugar contains an off-aroma, which was hypothesized to generate expectations on the acceptability of a product made with beet sugar. Thus, the objective of this study was to assess the impact of information about the sugar source (beet vs. cane) on the overall liking of an orange-flavored beverage. One hundred panelists evaluated an orange-flavored powdered beverage mix and beverage made with beet and cane sugars using a 5-phase testing protocol involving a tetrad test and hedonic ratings performed under blind and informed conditions. Tetrad test results indicated that there was a significant difference (P < 0.05) between the beverage mix made with beet sugar and cane sugar; however, no difference was found between the beverage made with beet sugar and cane sugar. Hedonic ratings revealed the significance of information conditions on the panelists evaluation of sugar (F = 24.67, P < 0.001); however, no difference in the liking was identified for the beverage mix or beverage. Average hedonic scores were higher under informed condition compared to blind condition for all products, possibly because labels tend to reduce uncertainty about a product. Results from this study are representative of the responses from the general population and suggest that they are not affected by sugar source information in a beverage product. Based on concerns with the use of beet sugar expressed in the popular press, there may be a subgroup of the population that has a preconceived bias about sugar sources due to their prior experiences and knowledge and, thus, would be influenced by labels indicating the sugar source used in a product. PMID:25308071

  4. [New technologies and workers' health: mechanization of sugar cane harvesting].

    PubMed

    Scopinho, R A; Eid, F; Vian, C E; Silva, P R

    1999-01-01

    In the context of reorganization of production in the sugar and alcohol industry, mechanization of sugar cane harvesting has been justified as a protective measure for the environment and workers. This article focuses on the consequences of organization of work in mechanization of sugar cane harvesting with regard to the harvester operators' health. Based on data gathered through interviews and direct observation at the workplace, changes implemented in the technological base and division of labor and organization were analyzed, identifying the work load inherent to the process and how it affects workers' health. While harvesters help decrease the physical, chemical, and mechanical work load, they increase the physiological and psychological work load. There is evidence of significant change in the pattern of work-related accidents, entailing a decrease in their frequency and increase in severity. The pattern of illness among harvester operators is similar to that of manual sugar cane cutters, with a highlight on psychosomatic illness related to the organization of work in shifts and increased tempo due to use of machinery. PMID:10203455

  5. Preliminary crystallographic analysis of sugar cane phosphoribosylpyrophosphate synthase

    PubMed Central

    Napolitano, H. B.; Sculaccio, S. A.; Thiemann, O. H.; Oliva, G.

    2005-01-01

    Phosphoribosylpyrophosphate synthases (PRS; EC 2.7.6.1) are enzymes that are of central importance in several metabolic pathways in all cells. The sugar cane PRS enzyme contains 328 amino acids with a molecular weight of 36.6?kDa and represents the first plant PRS to be crystallized, as well as the first phosphate-independent PRS to be studied in molecular detail. Sugar cane PRS was overexpressed in Escherichia coli, purified and crystallized using the hanging-drop vapour-diffusion method. Using X-ray diffraction experiments it was determined that the crystals belong to the orthorhombic system, with space group P21212 and unit-cell parameters a = 213.2, b = 152.6, c = 149.3?Å. The crystals diffract to a maximum resolution of 3.3?Å and a complete data set to 3.5?Å resolution was collected and analysed. PMID:16508088

  6. Chromatographic detection of sugar cane samples via polarimetry.

    NASA Astrophysics Data System (ADS)

    López, Juan Carlos; Fajer, Victor; Rodríguez, Carlos W.; Naranjo, Salvador; Mora, Luis; Ravelo, Justo; Cossio, Gladys; Avila, Norma

    2004-03-01

    The combination of molecular exclusion cromatography with the laser polarimetry has become a powerful technique to separate and evaluate some carbohydrates of sugar cane plants. In the following work it has been obtained chromatograms of carbohydrates standards, which has been used as comparison patterns in the studies of the juice quality in different cane varieties of different physiological stadiums and stress conditions. By means of the employment of this technique, it has also been determined the influence of carbohydrates of medium molecular mass in the determination of the apparent sucrose in the routine sugar analysis. On the other hand, discreet determination of the fractions causes time consuming and a troublesome manipulation. In the present work some modifications to the system are shown, obtaining a small volume sample (less than 1 ml) and angular readings on line, avoiding the employment of fraction collectors.

  7. Enhancing of sugar cane bagasse hydrolysis by Annulohypoxylon stygium glycohydrolases.

    PubMed

    Robl, Diogo; Costa, Patrícia dos Santos; Büchli, Fernanda; Lima, Deise Juliana da Silva; Delabona, Priscila da Silva; Squina, Fabio Marcio; Pimentel, Ida Chapaval; Padilla, Gabriel; Pradella, José Geraldo da Cruz

    2015-02-01

    The aim of this study was to develop a bioprocess for the production of ?-glucosidase and pectinase from the fungus Annulohypoxylon stygium DR47. Media optimization and bioreactor cultivation using citrus bagasse and soybean bran were explored and revealed a maximum production of 6.26 U/mL of pectinase at pH 4.0 and 10.13 U/mL of ?-glucosidase at pH 5.0. In addition, the enzymes extracts were able to replace partially Celluclast 1.5L in sugar cane bagasse hydrolysis. Proteomic analysis from A. stygium cultures revealed accessory enzymes, mainly belong to the families GH3 and GH54, that would support enhancement of commercial cocktail saccharification yields. This is the first report describing bioreactor optimization for enzyme production from A. stygium with a view for more efficient degradation of sugar cane bagasse. PMID:25496945

  8. Preliminary crystallographic analysis of sugar cane phosphoribosylpyrophosphate synthase

    SciTech Connect

    Napolitano, H. B.; Sculaccio, S. A.; Thiemann, O. H.; Oliva, G.

    2005-01-01

    X-ray diffraction data have been collected from crystals of recombinant sugar cane phosphoribosylpyrophosphate synthase (PRS) and analysis has revealed its quaternary structure, localizing this PRS into the class of enzymes forming an hexameric oligomer of 223 kDa. Phosphoribosylpyrophosphate synthases (PRS; EC 2.7.6.1) are enzymes that are of central importance in several metabolic pathways in all cells. The sugar cane PRS enzyme contains 328 amino acids with a molecular weight of 36.6 kDa and represents the first plant PRS to be crystallized, as well as the first phosphate-independent PRS to be studied in molecular detail. Sugar cane PRS was overexpressed in Escherichia coli, purified and crystallized using the hanging-drop vapour-diffusion method. Using X-ray diffraction experiments it was determined that the crystals belong to the orthorhombic system, with space group P2{sub 1}2{sub 1}2 and unit-cell parameters a = 213.2, b = 152.6, c = 149.3 Å. The crystals diffract to a maximum resolution of 3.3 Å and a complete data set to 3.5 Å resolution was collected and analysed.

  9. Crude glycerin combined with sugar cane silage in lamb diets.

    PubMed

    de Oliveira Filho, Carlos Alberto Alves; Azevêdo, José Augusto Gomes; de Carvalho, Gleidson Giordano Pinto; da Silva, Camilla Flávia Portela Gomes; Cabral, Ícaro Dos Santos; Pereira, Luiz Gustavo Ribeiro; Dos Reis, Larissa Gomes; de Almeida, Flávio Moreira; Souza, Lígia Lins

    2016-02-01

    This study aimed to evaluate the effect of the level of crude glycerin (CG) on in vitro fermentation kinetics (0, 20, 40, 60, and 80 g/kg DM of sugar cane silage), on in vitro neutral detergent fiber (NDF) degradation (0, 30, 60, and 90 g/kg DM of sugar cane silage), and intake and digestibility of nutrients and nitrogen balance (0, 20, 55, 82, and 108 g/kg DM of sugar cane silage) in lambs. The in vitro trials were conducted in a completely randomized design with three repetitions. The in vivo trial was conducted in a Latin square design with five repetitions (5?×?5). For variables in which the F test was considered significant, the statistical interpretation of the effect of CG substitution levels was carried out through regression analyses. Kinetic parameters were not affected by CG inclusion. On in vitro NDF degradation, a significant effect of CG levels was observed on the potentially degradable fraction of NDF, the insoluble potentially degradable fraction of NDF, and the undegradable NDF fraction. The intake and digestibility of nutrients and nitrogen balance were not affected by CG inclusion. The CG levels change in vitro NDF degradability parameters; however, there were no changes in animal intake, digestibility, and nitrogen balance with the inclusion levels used. PMID:26530907

  10. 40 CFR 409.70 - Applicability; description of the Hawaiian raw cane sugar processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Hawaiian raw cane sugar processing subcategory. 409.70 Section 409.70 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Hawaiian Raw Cane Sugar Processing Subcategory § 409.70 Applicability; description of the...

  11. 40 CFR 409.80 - Applicability; description of the Puerto Rican raw cane sugar processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Puerto Rican raw cane sugar processing subcategory. 409.80 Section 409.80 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Puerto Rican Raw Cane Sugar Processing Subcategory § 409.80 Applicability; description of...

  12. 40 CFR 409.40 - Applicability; description of the Louisiana raw cane sugar processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Louisiana raw cane sugar processing subcategory. 409.40 Section 409.40 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Louisiana Raw Cane Sugar Processing Subcategory § 409.40 Applicability; description of...

  13. Anaerobic digestion of solid wastes of cane sugar industry

    SciTech Connect

    Dasgupta, A.

    1983-01-01

    The cane sugar manufacturing industry generates large quantities of lignocellulosic solid wastes, namely bagasse and cachaza. Bagasse is the fibrous residue of the cane after extracting the juice. Cachaza is the filter cake of the precipitated insoluble sugars. This research investigates the feasibility of anaerobic digestion of a mixture of bagasse and cachaza to produce methane. Two rations of bagasse-cachaza mix as substrates were investigated. The first one was 8:1 which represents the average ratio of bagasse and cachaza produced in a raw sugar mill. The second ratio investigated was 2.4:1 which represents the proportion of bagasse and cachaza wastes after 70% of the bagasse is burned in sugar mill boilers. An acclimated microbial culture for this substrate was developed. Organic Loading-Detention Time relationships were established for an optimum system. Pre-treatment techniques of the substrate were investigated as a means of enhancing the digestibility of the cellulosic substrate. Recirculation of the filtrate was evaluated as a method for increasing solids retention time without increasing hydraulic detention time. The kinetics of the digestion process for bagasse-cachaza mixed substrate was investigated and growth constants were determined. The bionutritional characteristics of the substrate used for the digestion were evaluated. Based on the results obtained, mass balances and preliminary economic analysis of the digestion system were developed.

  14. Photosynthesis by sugar-cane leaves

    PubMed Central

    Hatch, M. D.; Slack, C. R.

    1966-01-01

    1. Radioactive products in detached leaf segments were examined after periods of steady-state photosynthesis in 14CO2. 2. After exposure to 14CO2 for approx. 1sec. more than 93% of the fixed radioactivity was located in malate, aspartate and oxaloacetate. After longer periods large proportions of the radioactivity appeared in 3-phosphoglycerate, hexose monophosphates and sucrose. Similar results were obtained with leaves still attached to the plant. 3. Radioactivity appeared first in C-4 of the dicarboxylic acids and C-1 of 3-phosphoglycerate. The labelling pattern in hexoses was consistent with their formation from 3-phosphoglycerate. 4. The reaction giving rise to C4 dicarboxylic acid appears to be the only quantitatively significant carboxylation reaction. 5. Evidence is provided that the radioactivity incorporated into the C4 dicarboxylic acid pool is transferred to sugars via 3-phosphoglycerate. A scheme is proposed to account for these observations. PMID:5971771

  15. Impact of elevated carbon dioxide and temperature on fresh weight and sugar yield of sugar cane

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Seed-piece shoots of four cultivars of sugar cane were transplanted on March 21, 1977 to containers 1.2 m long X 0.6 m wide X 0.6 m deep) in four temperature zones of two temperature-gradient greenhouses at Gainesville, Florida. Each temperature zone had 8 containers. Four containers of each zone ...

  16. USE OF FT-IR SPECTROSCOPY TO MONITOR TRASH DECOMPOSITON IN THE SUGAR CANE INDUSTRY

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Post harvested cane trash, if left unburnt, impedes the growth of emerging ratoons and reduces sugar yields in comparison to unhindered ratoons. Approximately 75% of dry cane trash is decomposable fibre--36% Cellulose, 21%Hemicellulose, 16% Lignin. One alternative for the removal of cane trash wou...

  17. Fractionation of sugar cane with hot, compressed, liquid water

    SciTech Connect

    Allen, S.G.; Kam, L.C.; Zemann, A.J.; Antal, M.J. Jr.

    1996-08-01

    Sugar-cane bagasse and leaves (10--15 g oven-dry basis) were fractionated without size reduction by a rapid (45 s to 4 min), immersed percolation using only hot (190--230 C), compressed (P > P{sub sat}), liquid water (0.6--1.2 kg). Over 50% of the biomass could be solubilized. All of the hemicellulose, together with much of the acid-insoluble lignin in the bagasse (>60%), was solubilized, while less than 10% of the cellulose entered the liquid phase. Moreover, recovery of the hemicellulose as monomeric sugars (after a mild posthydrolysis) exceeded 80%. Less than 5% of the hemicellulose was converted to furfural. Percolation beyond that needed to immerse the biomass in hot liquid water did not result in increased solubilization. The yield of lignocellulosic residue was also not sensitive to the form of the sugar cane used (bagasse or leaves) or its moisture content (8--50%). Commercial applications for this fractionation process include the pretreatment of lignocellulosics for bioconversion to ethanol and the production of pulp and paper products.

  18. Sugar cane as an energy resource for the Caribbean area

    SciTech Connect

    Lima, J.E.

    1982-09-01

    Sugar cane presents tremendous potential as a renewable energy source for the non-oil-producing, developing countries of the Caribbean basin. The analysis presented here, finds the overall energy balance to be extremely favorable. The economics are also favorable, even though capital investment requirements are high. Potential for improvement, in both the energy balance and the economic aspects, is very great. Such improvement is attainable by the development of new technology, which could be available in the short term and at moderate cost. (Refs. 8).

  19. Sugar cane bagasse: an alternative fuel in the Brazilian citrus industry

    SciTech Connect

    Guerra, J.L.; Steger, E.

    1988-05-01

    This article will briefly discuss the production of sugar cane bagasse and advantages for using it as an alternative fuel. In particular, this article will focus on how Citrosuco Paulista, (a multi-plant producer of citrus concentrates), modified its existing boilers and dryers to accommodate the new sugar cane bagasse fuel.

  20. How to manage sugar cane in the field and factory following damaging freezes

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The exposure of sugar cane to damaging frosts occurs in approximately 25% of the sugar cane producing countries world-wide. A series of damaging freezes, -2.6, -3.3 and -2.1°C, occurred in Morocco on 4, 5 and 13 February 2012, respectively, only 2 weeks after the commencement of the harvest season....

  1. 40 CFR 409.50 - Applicability; description of the Florida and Texas raw cane sugar processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Florida and Texas raw cane sugar processing subcategory. 409.50 Section 409.50 Protection of Environment... CATEGORY Florida and Texas Raw Cane Sugar Processing Subcategory § 409.50 Applicability; description of the Florida and Texas raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  2. 40 CFR 409.50 - Applicability; description of the Florida and Texas raw cane sugar processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Florida and Texas raw cane sugar processing subcategory. 409.50 Section 409.50 Protection of Environment... CATEGORY Florida and Texas Raw Cane Sugar Processing Subcategory § 409.50 Applicability; description of the Florida and Texas raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  3. 40 CFR 409.50 - Applicability; description of the Florida and Texas raw cane sugar processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Florida and Texas raw cane sugar processing subcategory. 409.50 Section 409.50 Protection of Environment... CATEGORY Florida and Texas Raw Cane Sugar Processing Subcategory § 409.50 Applicability; description of the Florida and Texas raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  4. 40 CFR 409.50 - Applicability; description of the Florida and Texas raw cane sugar processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Florida and Texas raw cane sugar processing subcategory. 409.50 Section 409.50 Protection of Environment... CATEGORY Florida and Texas Raw Cane Sugar Processing Subcategory § 409.50 Applicability; description of the Florida and Texas raw cane sugar processing subcategory. The provisions of this subpart are applicable...

  5. Pretreated sugar cane bagasse as a model for cattle feeding

    SciTech Connect

    Fontana, J.D.; Ramos, L.P.; Deschamps, F.C.

    1995-12-31

    Pretreatment under mild conditions in the presence of water (solvolysis) or aqueous orthophosphoric acid (phosphorolysis) was used to increase the nutritional value of sugar cane bagasse for cattle feeding. The best pretreatment conditions were defined as those in which the highest in situ degradability rates (ruminal digestion) were achieved with the least energy consumption and/or production of inhibitory products. Heating sugar cane bagasse up to 197{degrees}C (13.5 atm) at a 4:1 (w/w) water ratio was shown to be a compromised condition for solvolysis, as higher temperatures would require more energy consumption without adding too much to the already high 60% ruminal degradability of the residue in relation to its dry weight. These rates of degradability were shown to be further enhanced to almost 70% by adding 2.9% (w/w) orthophosphoric acid as an acid catalyst. A mathematical treatment of the kinetic data describing ruminal digestion of each of the pretreated residues was also developed in this study.

  6. Protective gloves on manual sugar cane cutting are really effective?

    PubMed

    Abrahão, R F; Gonzaga, M C; Braunbeck, O A

    2012-01-01

    Problems related to the use of personal protective equipment (PPE), specially the use of protective gloves for the manual sugar cane cutting, motivated this research, made possible by a tripartite negotiation involving the Ministry of Labor, the Union of Rural Workers and the Employer's Association of sugarcane agribusiness. The main objective was to evaluate, from an ergonomics perspective, the impact of use of the gloves during the manual cane sugar cutting, raising questions on safety, effectiveness and comfort. The research was carried in a sugarcane industry of São Paulo for two seasons involving 47 workers who made a qualitative analysis of acceptance of four models of protective gloves. The methodology included the use of semi-structured interviews, questionnaires and field observations and the experimental determination of the coefficient of static friction developed between the gloves and the surfaces of the machete handle. The main results indicate the general inadequacy of the gloves currently used forcing the employees to improvise. Workers found the glove of leather and nylon scraping the best reported for comfort in use. The overall results highlight the problem of detachment of test standards for the manufacture of PPE, ignoring users and the activity to be performed. PMID:22317487

  7. Antiatherosclerotic function of Kokuto, Okinawan noncentrifugal cane sugar.

    PubMed

    Okabe, Takafumi; Toda, Takayoshi; Inafuku, Masashi; Wada, Koji; Iwasaki, Hironori; Oku, Hirosuke

    2009-01-14

    In the present study, we investigated the effect of phenolic compounds (PCs) and policosanol of Kokuto, Okinawan noncentrifugal cane sugar, on the development of atherosclerosis. A total of 67 male Japanese quail were divided into eight dietary groups in trial 1. The dietary groups were fed the atherosclerotic diet (AD) containing 5% corn oil, 2% cholesterol, and 30% sucrose or seven different types of Kokuto. Dietary intakes of Kokuto notably prevented the development of atherosclerosis. Furthermore, there was a significant negative correlation between the serum radical scavenging activity and the degree of atherosclerosis in the dietary groups. In trial 2, a total of 63 Japanese quail were fed AD with sucrose, Kokuto, PC extracts from Kokuto, wax extracts from sugar cane, octacosanol, vitamin C, and vitamin E. As a result, the supplementation of the diet with Kokuto and PCs significantly reduced the development of atherosclerosis as compared with the ingestion of AD with sucrose. In conclusion, these findings suggest that, among various components of Kokuto, PCs play a central role for the prevention of experimental atherosclerosis in Japanese quail. PMID:19072226

  8. Sensory differences between product matrices made with beet and cane sugar sources.

    PubMed

    Urbanus, Brittany L; Schmidt, Shelly J; Lee, Soo-Yeun

    2014-11-01

    Although beet and cane sugar sources have nearly identical chemical compositions, the sugars differ in their volatile profiles, thermal behaviors, and minor chemical components. Scientific evidence characterizing the impact of these differences on product quality is lacking. The objective of this research was to determine whether panelists could identify a sensory difference between product matrices made with beet and cane sugar sources. Sixty-two panelists used the R-index by ranking method to discern whether there was a difference between 2 brands of beet and 2 brands of cane sugars in regard to their aroma and flavor, along with a difference in pavlova, simple syrup, sugar cookies, pudding, whipped cream, and iced tea made with beet and cane sugars. R-index values and Friedman's rank sum tests showed differences (P < 0.05) between beet and cane sugars in regard to their aroma and flavor. Significant differences between the sugar sources were also identified when incorporated into the pavlova and simple syrup. No difference was observed in the sugar cookies, pudding, whipped cream, and iced tea. Possible explanations for the lack of difference in these products include: (1) masking of beet and cane sensory differences by the flavor and complexity of the product matrix, (2) the relatively small quantity of sugar in these products, and (3) variation within these products being more influential than the sugar source. The findings from this research are relevant to sugar manufacturers and the food industry as a whole, because it identifies differences between beet and cane sugars and product matrices in which beet and cane sugars are not directly interchangeable. PMID:25308166

  9. Monitoring Freeze Injury and Evaluating Losingto Sugar-Cane Using RS and GPS

    NASA Astrophysics Data System (ADS)

    Tan, Zongkun; Ding, Meihua; Wang, Longhe; Yang, Xin; Ou, Zhaorong

    From Jan 12th to Feb 12th 2008, the most severity cold chilling and freeze injury weather took place during the last 50 years in the southern of China.Sugar-cane was suffered injury severity. However, the losing of sugar-cane which it was aroused by thisweather disaster had not been exactitude evaluated till on Apr 1st, 2008. It was not only affected the sugar-cane ordinary harvesting and crushing, but also affected reserving sugar-cane seed for planting. Freeze injury is common disaster for sugar-cane in southern of China and monitoring freeze injury using RS and GIS are of great economic significance but little research work about it has been done in China Freeze injuring is not only related to crop growth stage and the cold air intension from northern to southern and weather types, but also consanguineous related to land form and physiognomy and geographical latitude and height above sea level etc and crop planting spatial distribution. The case study of Guangxi province which is the biggest region of sugar-cane planting in China in this paper, the values of sugar-cane NDVI among the freeze injury occur former and after in early 2008 and without freeze injury occur in the same term 2007 were analyzed and compared based on the sugar-cane planting spatial distribution information which were carried out by using multi-phase EOS/MODIS data. The result showed that it was not only commendably reflected the spatial distribution of freeze injury but also reflected the sugarcane suffered from degree using the values of sugar-cane NDVIof freeze injury occur former and after. The field sample investigation data of using GPS was integrated with the NDVI, the evaluation of region sugar-cane suffer from freeze injury losing could quickly and exactly realize.

  10. 75 FR 22095 - USDA Reassigns Domestic Cane Sugar Allotments and Increases the Fiscal Year 2010 Raw Sugar Tariff...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-27

    ...; ] DEPARTMENT OF AGRICULTURE Office of the Secretary USDA Reassigns Domestic Cane Sugar Allotments and Increases the Fiscal Year 2010 Raw Sugar Tariff-Rate Quota AGENCY: Office of the Secretary, USDA. ACTION: Notice. SUMMARY: The Secretary of Agriculture today announced a reassignment of surplus sugar under domestic...

  11. 75 FR 38764 - USDA Reassigns Domestic Cane Sugar Allotments and Increases the Fiscal Year 2010 Raw Sugar Tariff...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-06

    ...; ] DEPARTMENT OF AGRICULTURE Office of the Secretary USDA Reassigns Domestic Cane Sugar Allotments and Increases the Fiscal Year 2010 Raw Sugar Tariff-Rate Quota AGENCY: Office of the Secretary, USDA. ACTION: Notice. SUMMARY: The Secretary of Agriculture today announced a reassignment of surplus sugar under domestic...

  12. The use of Lactobacillus species as starter cultures for enhancing the quality of sugar cane silage.

    PubMed

    Ávila, C L S; Carvalho, B F; Pinto, J C; Duarte, W F; Schwan, R F

    2014-02-01

    Sugar cane (Saccharum spp.) is a forage crop widely used in animal feed because of its high dry matter (DM) production (25 to 40 t/ha) and high energy concentration. The ensiling of sugar cane often incurs problems with the growth of yeasts, which leads to high losses of DM throughout the fermentative process. The selection of specific inoculants for sugar cane silage can improve the quality of the silage. The present study aimed to select strains of lactic acid bacteria (LAB) isolated from sugar cane silage and to assess their effects when used as additives on the same type of silage. The LAB strains were inoculated into sugar cane broth to evaluate their production of metabolites. The selected strains produced higher concentrations of acetic and propionic acids and resulted in better silage characteristics, such as low yeast population, lower ethanol content, and lesser DM loss. These data confirmed that facultative heterofermentative strains are not good candidates for sugar cane silage inoculation and may even worsen the quality of the silage fermentation by increasing DM losses throughout the process. Lactobacillus hilgardii strains UFLA SIL51 and UFLA SIL52 resulted in silage with the best characteristics in relation to DM loss, low ethanol content, higher LAB population, and low butyric acid content. Strains UFLA SIL51 and SIL52 are recommended as starter cultures for sugar cane silage. PMID:24359831

  13. Role of sugar cane in Brazil's history and economy

    SciTech Connect

    Nastari, P.M.

    1983-01-01

    The history and evolution of the sugar-cane culture in Brazil is reviewed. An econometric model is constructed to explain the economic relationships of supply and demand of sugar, hydrous ethanol (ethyl alcohol), and anhydrous ethanol in Brazil overtime. Estimates of the parameters in the model are obtained using the methods of ordinary least squares and three stages least squares. Because the number of exogenous variables is larger than the number of observations, principal components of the exogenous variables is used. The model estimated using three stages least squares with seven principal components has the best performance among the alternatives considered. Using the estimated model, the level of a number of policy variables is determined in consistency with the objectives of ethanol production established by the Brazilian government for 1985. It is estimated that in 1985 the proportion of anhydrous ethanol added to gasoline must be 16.5%. Analysis of the net income accrued by producers and the government since the creation of the National Alcohol Program (Proalcool) in 1975 reveals that producers of sugar have been able to triple their net annual income. Independent producers of ethanol have also been able to accrue positive net results during this period. It is concluded that the Proalcool has been beneficial to the Brazilian economy, largely because of the savings in oil imports and the internal creation of jobs, while at the same time it has contributed to a superavit in the government's budget.

  14. Diets Based on Sugar Cane Treated with Calcium Oxide for Lambs

    PubMed Central

    Carvalho, G. G. P.; Garcia, R.; Pires, A. J. V.; Silva, R. R.; Detmann, E.; Filho, A. Eustaquio; Ribeiro, L. S. O.; Carvalho, L. M.

    2013-01-01

    This experiment was conducted to evaluate the intake, nutrient apparent digestibility and the effect of total collection days (two and four days) on apparent digestibility estimates for lambs fed diets containing sugar cane treated with calcium oxide (CaO). Eight Santa Inês castrated male lambs with a 16.6±1.8 kg body weight were used. The lambs were distributed in two 4×4 Latin squares, with four experimental periods of 14 d each. The animals were kept in 1.2 m2 individual pens, and the intake and digestibility evaluations were performed during the last four days of each period. The diets were formulated to be isonitrogenous, containing 14% crude protein (CP), and presenting 70% sugar cane treated with 0, 0.75, 1.5 or 2.25% of CaO (as-fed basis), corrected with 1% urea, and 30% concentrate. The sugar cane with added CaO was chopped, treated, and offered to the animals after 24 h of storage. The sugar cane with CaO increased the DM, OM, CP, NDF, NDFap, TC, NFCap and TDN intake (kg/d), when compared to natural sugar cane, and produced the same intake expressed as a percentage of body weight (% BW). The NFCap digestibility of the CaO-treated sugar cane was inferior to the NFCap digestibility in natural sugar cane. There was a linear increase in the DM intake with the CaO-added sugar cane, but the DM and NDF digestibility and the TDN content decreased linearly. The chemical treatment of sugar cane with CaO increases the intake but does not improve the nutrient digestibility. Two days of total fecal collection were found to be sufficient to estimate the total apparent digestibility in lambs. PMID:25049779

  15. Diets based on sugar cane treated with calcium oxide for lambs.

    PubMed

    Carvalho, G G P; Garcia, R; Pires, A J V; Silva, R R; Detmann, E; Filho, A Eustaquio; Ribeiro, L S O; Carvalho, L M

    2013-02-01

    This experiment was conducted to evaluate the intake, nutrient apparent digestibility and the effect of total collection days (two and four days) on apparent digestibility estimates for lambs fed diets containing sugar cane treated with calcium oxide (CaO). Eight Santa Inês castrated male lambs with a 16.6±1.8 kg body weight were used. The lambs were distributed in two 4×4 Latin squares, with four experimental periods of 14 d each. The animals were kept in 1.2 m(2) individual pens, and the intake and digestibility evaluations were performed during the last four days of each period. The diets were formulated to be isonitrogenous, containing 14% crude protein (CP), and presenting 70% sugar cane treated with 0, 0.75, 1.5 or 2.25% of CaO (as-fed basis), corrected with 1% urea, and 30% concentrate. The sugar cane with added CaO was chopped, treated, and offered to the animals after 24 h of storage. The sugar cane with CaO increased the DM, OM, CP, NDF, NDFap, TC, NFCap and TDN intake (kg/d), when compared to natural sugar cane, and produced the same intake expressed as a percentage of body weight (% BW). The NFCap digestibility of the CaO-treated sugar cane was inferior to the NFCap digestibility in natural sugar cane. There was a linear increase in the DM intake with the CaO-added sugar cane, but the DM and NDF digestibility and the TDN content decreased linearly. The chemical treatment of sugar cane with CaO increases the intake but does not improve the nutrient digestibility. Two days of total fecal collection were found to be sufficient to estimate the total apparent digestibility in lambs. PMID:25049779

  16. Efficiency and daily work effort in sugar cane cutters.

    PubMed Central

    Spurr, G B; Barac-Nieto, M; Maksud, M G

    1977-01-01

    Productivity (metric tons (tonnes)/day), efficiency (kg cane cut/litre Vo2), and effort (percent Vo2 max sustained during an 8-hour workday) have been measured in 54 Colombian sugar cane cutters. In workers who sustained less than 40% Vo2 max during the workday, the effort expended was related to productivity (4 = 0-71) but efficiency and productivity were not significantly correlated. In 16 workers sustaining a greater than 40% Vo2 max during the workday, productivity and effort were not related and efficiency was significantly reduced. Subjects using less than 40% Vo2 max were divided into good, average and poor producers and compared with the men with low efficiencies. In general, these inefficient men had the anthropometric and physical fitness characteristics of low productivity workers (smaller stature, weight and Vo2 max). However, the frequency of good, average, and poor cutters in the inefficient group did not differ from that of the men expending less than 40% of their maximum effort nor was their average productivity different. No obvious reasons for the differences in efficiency and effort of these men were found. Images PMID:871445

  17. Iron-binding properties of sugar cane yeast peptides.

    PubMed

    de la Hoz, Lucia; Ponezi, Alexandre N; Milani, Raquel F; Nunes da Silva, Vera S; Sonia de Souza, A; Bertoldo-Pacheco, Maria Teresa

    2014-01-01

    The extract of sugar-cane yeast (Saccharomyces cerevisiae) was enzymatically hydrolysed by Alcalase, Protex or Viscozyme. Hydrolysates were fractionated using a membrane ultrafiltration system and peptides smaller than 5kDa were evaluated for iron chelating ability through measurements of iron solubility, binding capacity and dialyzability. Iron-chelating peptides were isolated using immobilized metal affinity chromatography (IMAC). They showed higher content of His, Lys, and Arg than the original hydrolysates. In spite of poor iron solubility, hydrolysates of Viscozyme provided higher iron dialyzability than those of other enzymes. This means that more chelates of iron or complexes were formed and these kept the iron stable during simulated gastro-intestinal digestion in vitro, improving its dialyzability. PMID:24001827

  18. Chemistry Based on Renewable Raw Materials: Perspectives for a Sugar Cane-Based Biorefinery

    PubMed Central

    Villela Filho, Murillo; Araujo, Carlos; Bonfá, Alfredo; Porto, Weber

    2011-01-01

    Carbohydrates are nowadays a very competitive feedstock for the chemical industry because their availability is compatible with world-scale chemical production and their price, based on the carbon content, is comparable to that of petrochemicals. At the same time, demand is rising for biobased products. Brazilian sugar cane is a competitive feedstock source that is opening the door to a wide range of bio-based products. This essay begins with the importance of the feedstock for the chemical industry and discusses developments in sugar cane processing that lead to low cost feedstocks. Thus, sugar cane enables a new chemical industry, as it delivers a competitive raw material and a source of energy. As a result, sugar mills are being transformed into sustainable biorefineries that fully exploit the potential of sugar cane. PMID:21637329

  19. Direct determination of sugar cane quality parameters by X-ray spectrometry and multivariate analysis.

    PubMed

    Melquiades, F L; Bortoleto, G G; Marchiori, L F S; Bueno, M I M S

    2012-10-31

    Current methods for quality control of sugar cane are performed in extracted juice using several methodologies, often requiring appreciable time and chemicals (eventually toxic), making the methods not green and expensive. The present study proposes the use of X-ray spectrometry together with chemometric methods as an innovative and alternative technique for determining sugar cane quality parameters, specifically sucrose concentration, POL, and fiber content. Measurements in stem, leaf, and juice were performed, and those applied directly in stem provided the best results. Prediction models for sugar cane stem determinations with a single 60 s irradiation using portable X-ray fluorescence equipment allows estimating the % sucrose, % fiber, and POL simultaneously. Average relative deviations in the prediction step of around 8% are acceptable if considering that field measurements were done. These results may indicate the best period to cut a particular crop as well as for evaluating the quality of sugar cane for the sugar and alcohol industries. PMID:23039086

  20. 75 FR 47258 - Determination of Total Amounts of Fiscal Year 2011 Tariff-Rate Quotas for Raw Cane Sugar and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-05

    ...-Rate Quotas for Raw Cane Sugar and Certain Sugars, Syrups and Molasses AGENCY: Office of the Secretary..., as well as, refined and specialty sugar Tariff-Rate Quotas (TRQ) as required under the U.S. World Trade Organization (WTO) commitments. The FY 2011 raw cane sugar TRQ is established at 1,117,195...

  1. Industrial-hygiene survey report, worker exposures during sugar cane harvesting, Florida Sugar Cane League, Clewiston, Florida

    SciTech Connect

    Boeniger, M.

    1986-12-01

    Literature dealing with commercially important plant species that contain amorphous silica was reviewed. Specifically, results were presented of a field survey of sugar cane field workers in Florida. Determinations were made of the airborne concentration of amorphous silica fibers to which these workers were exposed. The airborne fibers ranged in size from 3.5 to 65 micrometers long with an average diameter of 0.6 micrometers. The concentration of these fibers in the air was as high as 300,000 fibers per cubic meter during cane-cutting activities. Polyaromatic hydrocarbon concentrations were detected in the burnt leaf, but the concentrations in air were well below the limit of detection. The author recommends that comprehensive monitoring be considered for exposure to biogenic fibers among field workers, as well as refinery workers. The author also suggests that exposure to biogenic silicates in other industries which involve processing of agricultural commodities should be investigated. Solubility and persistence of these particular fibers in biological fluids should be considered.

  2. Ethanol from Sugar Cane: Flask Experiments Using the EX-FERM Technique

    PubMed Central

    Rolz, Carlos; de Cabrera, Sheryl

    1980-01-01

    Alcohol production at the laboratory scale from sugar cane pieces by the EX-FERM technique was studied with 37 strains of Saccharomyces spp. The EX-FERM process is novel in that it employs the simultaneous extraction and fermentation of the sucrose in a cane-water suspension. Two types of cane treatments were used: chips and shredded pith, either fresh or dried. A mother culture of the yeast was prepared in enriched cane juice and then added to the cane-water mixture. After static fermentation for 40 h at 30°C, the cane was removed, and fresh cane was added to the yeast-alcohol broth. After an additional 24 h, the cane was again removed and the liquor was analyzed. After the first 40-h cycle, sugar consumption was above 99% with 10 of the 37 yeast strains tested, and ethanol reached levels of 1.29 to 4.00 g per 100 ml, depending on the yeast strain. The final ethanol concentration reached 4.27 to 5.37 g per 100 ml, and sugar consumption was above 98% in three cases during a second EX-FERM cycle employing previously air-dried chips and pith. Product yields were within accepted values. Cane treatment did not appear to affect the results at this level. PMID:16345626

  3. Proteomic analysis of Herbaspirillum seropedicae cultivated in the presence of sugar cane extract.

    PubMed

    Cordeiro, Fabio Aparecido; Tadra-Sfeir, Michelle Zibetti; Huergo, Luciano Fernandes; de Oliveira Pedrosa, Fábio; Monteiro, Rose Adele; de Souza, Emanuel Maltempi

    2013-03-01

    Bacterial endophytes of the genus Herbaspirillum colonize sugar cane and can promote plant growth. The molecular mechanisms that mediate plant- H. seropedicae interaction are poorly understood. In this work, we used 2D-PAGE electrophoresis to identify H. seropedicae proteins differentially expressed at the log growth phase in the presence of sugar cane extract. The differentially expressed proteins were validated by RT qPCR. A total of 16 differential spots (1 exclusively expressed, 7 absent, 5 up- and 3 down-regulated) in the presence of 5% sugar cane extract were identified; thus the host extract is able to induce and repress specific genes of H. seropedicae. The differentially expressed proteins suggest that exposure to sugar cane extract induced metabolic changes and adaptations in H. seropedicae presumably in preparation to establish interaction with the plant. PMID:23331092

  4. Interaction of Azospirillum brasilense and Glomus intrarradix in Sugar Cane Roots.

    PubMed

    Bellone, Carlos H; de Bellone Silvia, Carrizo

    2012-03-01

    Fifteen-day-old variety NA 56-79 sugar cane seedlings were inoculated with Azospirillum brasilense and Glomus intrarradix. This article aims at examining changes in sugar cane root seedlings inoculated with Glomus intrarradix and Azospirillum brasilense, the increase in microbial biomass and the acetylene reduction process as well. The internal root colonization was studied 20 days after inoculation using scanning and a transmission electron microscope. Both microorganisms entered the sugar cane root through the emergent lateral roots. The microorganisms were capable of coexisting both intra and intercellularly, producing changes in the cell wall, thus allowing colonization and interaction between the organisms. These changes increased the number of microorganisms inside the root as well as acetylene nitrogen reduction. Sugar cane plant biomass increased with joint-inoculation. The number of endophytic microorganisms and nitrogen fixing activity increased when they were colonized by Azospirillum and Glomus together. PMID:23449160

  5. Diffusion of moisture in drying of sugar cane fibers and bundles

    SciTech Connect

    Rodriguez-Ramirez, J.; Quintana-Hernandez, P.A.; Mendez-Lagunas, L.; Martinez-Gonzalez, G.; Gonzalez-Alatorre, G.

    2000-05-01

    Sugar cane fibers and arrangements of fibers in cylindrical bundles were dried in a thermoanalyzer and their diffusive coefficients were calculated using the slope method. The effect of temperature, moisture content as well as structural changes were analyzed. Diffusion coefficients changed nonlinearly with moisture content and followed an Arrhenius-like functionality with temperature. The analysis of these effects suggested a liquid diffusion transport mechanism of moisture transfer inside sugar cane fibers and bundles.

  6. Nitrogen-containing corrosion inhibitors for metals based on sugar cane wax

    SciTech Connect

    Ledovskykh, V.M.; Gonzales Rigotty, H.D.; Shapovalova, Yu.P.

    1988-05-01

    Requirements have been developed, reactions have been studied, and synthesis has been carried out for inhibitors of the carbonic acid amide and 2-alkylimidazoline classes from sugar cane wax. The efficiency of their inhibition on corrosion of metals in two phase media has been demonstrated in laboratory and pilot tests. The research was conducted to assess the feasibility of generating corrosion inhibitors from the waste products of sugar cane treatment for use in the Cuban oil production and refining industry.

  7. Influence of gamma radiation on microbiological parameters of the ethanolic fermentation of sugar-cane must

    NASA Astrophysics Data System (ADS)

    Alcarde, A. R.; Walder, J. M. M.; Horii, J.

    2003-04-01

    The influence of gamma radiation on reducing the population of some bacteria Bacillus and Lactobacillus that usually contaminate the sugar-cane must and its effects on acidity of the medium and viability of the yeast during fermentation were evaluated. The treatment with gamma radiation reduced the bacterial load of the sugar-cane must. Consequently, the volatile acidity produced during the fermentation of the must decreased and the viability of the yeast afterwards added increased.

  8. Production, optimization and characterization of lactic acid by Lactobacillus delbrueckii NCIM 2025 from utilizing agro-industrial byproduct (cane molasses).

    PubMed

    Srivastava, Abhinay Kumar; Tripathi, Abhishek Dutt; Jha, Alok; Poonia, Amrita; Sharma, Nitya

    2015-06-01

    In the present work Lactobacillus delbrueckii was used to utilize agro-industrial byproduct (cane molasses) for lactic acid production under submerged fermentation process. Screening of LAB was done by Fourier transform infra red spectroscopy (FTIR). Effect of different amino acids (DL-Phenylalanine, L-Lysine and DL-Aspartic acid) on the fermentation process was done by high performance liquid chromatography (HPLC). Central composite rotatable design (CCRD) was used to optimize the levels of three parameters viz. tween 80, amino acid and cane molasses concentration during fermentative production of lactic acid. Under optimum condition lactic acid production was enhanced from 55.89 g/L to 84.50 g/L. Further, validation showed 81.50 g/L lactic acid production. Scale up was done on 7.5 L fermentor. Productivity was found to be 3.40 g/L/h which was higher than previous studies with reduced fermentation time from 24 h to 12 h. Further characterization of lactic acid was done by FTIR. PMID:26028739

  9. Ethanol from sugar cane: flask experiments using the EX-FERM technique

    SciTech Connect

    Rolz, C.; Cabrera, S.

    1980-09-01

    Alcohol production at the laboratory scale from sugar cane pieces by the EX-FERM technique was studied with 37 strains of Saccharomyces spp. The EX-FERM process is novel in that it employs the simultaneous extraction and fermentation of the sucrose in a cane-water suspension. The final ethanol concentration reached 4.27 to 5.37g per 100 ml, and sugar consumption was above 98% in three cases during a second EX-FERM cycle employing previously air-dried chips and pith. Product yields were within accepted values. Cane treatment did not appear to affect the results at this level.

  10. 40 CFR 409.50 - Applicability; description of the Florida and Texas raw cane sugar processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Florida and Texas raw cane sugar processing subcategory. 409.50 Section 409.50 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Florida and Texas Raw Cane Sugar Processing Subcategory § 409.50 Applicability; description of...

  11. Accumulation of recombinant cellobiohydrolase and endoglucanase in the leaves of mature transgenic sugar cane.

    PubMed

    Harrison, Mark D; Geijskes, Jason; Coleman, Heather D; Shand, Kylie; Kinkema, Mark; Palupe, Anthony; Hassall, Rachael; Sainz, Manuel; Lloyd, Robyn; Miles, Stacy; Dale, James L

    2011-10-01

    A major strategic goal in making ethanol from lignocellulosic biomass a cost-competitive liquid transport fuel is to reduce the cost of production of cellulolytic enzymes that hydrolyse lignocellulosic substrates to fermentable sugars. Current production systems for these enzymes, namely microbes, are not economic. One way to substantially reduce production costs is to express cellulolytic enzymes in plants at levels that are high enough to hydrolyse lignocellulosic biomass. Sugar cane fibre (bagasse) is the most promising lignocellulosic feedstock for conversion to ethanol in the tropics and subtropics. Cellulolytic enzyme production in sugar cane will have a substantial impact on the economics of lignocellulosic ethanol production from bagasse. We therefore generated transgenic sugar cane accumulating three cellulolytic enzymes, fungal cellobiohydrolase I (CBH I), CBH II and bacterial endoglucanase (EG), in leaves using the maize PepC promoter as an alternative to maize Ubi1 for controlling transgene expression. Different subcellular targeting signals were shown to have a substantial impact on the accumulation of these enzymes; the CBHs and EG accumulated to higher levels when fused to a vacuolar-sorting determinant than to an endoplasmic reticulum-retention signal, while EG was produced in the largest amounts when fused to a chloroplast-targeting signal. These results are the first demonstration of the expression and accumulation of recombinant CBH I, CBH II and EG in sugar cane and represent a significant first step towards the optimization of cellulolytic enzyme expression in sugar cane for the economic production of lignocellulosic ethanol. PMID:21356003

  12. Profiles of polycyclic aromatic hydrocarbons in Brazilian sugar cane spirits: discrimination between Cachaças produced from nonburned and burned sugar cane crops.

    PubMed

    Galinaro, Carlos A; Cardoso, Daniel R; Franco, Douglas W

    2007-04-18

    Cachaça may be contaminated by a remarkable presence of polycyclic aromatic hydrocarbons (PAHs) when the sugar cane crop used for its production is burned before harvesting. The analysis of 15 PAHs by liquid chromatography coupled to a fluorescence detector in 131 cachaça samples from burned and nonburned sugar cane crops is reported. Average contents of 21.1 and 1.91 microg L(-1) for total PAHs were observed for cachaças originating from burned and nonburned sugar cane plantations, respectively. The main difference between these two classes of cachaças is in the quantitative profile of the most potent carcinogenic PAH, benzo[a]pyrene, which is more abundant in cachaça produced from burned sugar cane crops (4.54 x 10(-2) microg L(-1)) than in cachaça produced from nonburned crops (9.02 x 10(-3) microg L(-1)). The contents of benzo[a]pyrene in both classes of cachaça are lower than the legal limit established by the European Union (EU) at 2.00 microg L(-1) for food products. In relation to the total PAH content suggested by the German Society for Fat Science, both cachaças from burned (21.1 microg L(-1)) and nonburned crops (1.91 microg L(-1)) are below the limit (25 microg L(-1)) for total PAH content. The analytical data for PAHs, when treated through the multivariate statistical methods principal component analysis and canonical discriminant analysis, provide a very good distinction between samples produced from burned and nonburned sugar cane crops with a certainty of 98.1%. PMID:17381124

  13. Biological nitrogen fixation in sugar cane: A key to energetically viable biofuel production

    SciTech Connect

    Boddey, R.M.

    1995-05-01

    The advantages of producing biofuels to replace fossil energy sources are derived from the fact that the energy accumulated in the biomass in captured directly from photosynthesis and is thus renewable, and that the cycle of carbon dioxide fixation by the crop, followed by burning of the fuel makes no overall contribution to atmospheric CO{sub 2} or, consequently, to global warming. However, these advantages are negated if large quantities of fossil fuels need to be used to grow or process the biofuel crop. In this regard, the Brazilian bioethanol program, based on the fermentation/distillation of sugar cane juice, is particularly favorable, not only because the crop is principally hand harvested, but also because of the low nitrogen fertilizer use on sugar cane in Brazil. Recent {sup 15}N and N balance studies have shown that in some Brazilian cane varieties, high yields are possible without N fertilization because the plants are able to obtain large contributions of nitrogen from plant-associated biological N{sub 2} fixation (BNF). The N{sub 2}-fixing acid-tolerant bacterium Acetobacter diazotrophicus was first found to occur within roots, stems, and leaves of sugar cane. Subsequently, two species of Herbaspirillum also have been found to occur within the interior of all sugar cane tissues. The discovery of these, and other N{sub 2}-fixing bacteria that survive poorly in soil but thrive within plant tissue (endophytic bacteria), may account for the high BNF contributions observed in sugar cane. Further study of this system should allow the gradual elimination of N fertilizer use on sugar cane, at least in Brazil, and opens up the possibility of the extension of this efficient N{sub 2}-fixing system to cereal and other crops with consequent immense potential benefits to tropical agriculture. 44 refs., 9 figs., 4 tabs.

  14. Fluoride bioaccumulation by hydroponic cultures of camellia (Camellia japonica spp.) and sugar cane (Saccharum officinarum spp.).

    PubMed

    Camarena-Rangel, Nancy; Rojas Velázquez, Angel Natanael; Santos-Díaz, María del Socorro

    2015-10-01

    The ability of hydroponic cultures of camellia and sugar cane adult plants to remove fluoride was investigated. Plants were grown in a 50% Steiner nutrient solution. After an adaptation period to hydroponic conditions, plants were exposed to different fluoride concentrations (0, 2.5, 5 and 10 mg L(-1)). Fluoride concentration in the culture medium and in tissues was measured. In sugar cane, fluoride was mainly located in roots, with 86% of it absorbed and 14% adsorbed. Sugar cane plants removed 1000-1200 mg fluoride kg(-1) dry weight. In camellia plants the highest fluoride concentration was found in leaf. Roots accumulated fluoride mainly through absorption, which was 2-5 times higher than adsorption. At the end of the experiment, fluoride accumulation in camellia plants was 1000-1400 mgk g(-1) dry weight. Estimated concentration factors revealed that fluoride bioaccumulation is 74-221-fold in camellia plants and 100-500-fold in sugar cane plants. Thus, the latter appear as a suitable candidate for removing fluoride from water due to their bioaccumulation capacity and vigorous growth rate; therefore, sugar cane might be used for phytoremediation. PMID:25930125

  15. CHINESE ORIGIN OF THE WORDS CANE AND SUGAR CANDY IN ENGLISH AND OF KHAND IN HINDUSTANI

    PubMed Central

    Mahdihassan, S.

    1982-01-01

    Cane and Candy are traceable to two Chinese words both pronounced Kan. One word means Cane or pole when Kan finally became cane in English. The other word Kan means sweet. Then there is the Chinese word Dih which means Drops when Kan-Dih became Candy and means Sweet Drops. Sugar crystals would be like sand in size. Candy of the size of drops. While Misri of small stones, the term Kan-Dih entered Arabic as Qan-D and Sanskrit as Khan - Da and Hindustan as Khan–D. PMID:22556499

  16. Intentional synthesis of corrosion inhibitors based on secondary products of sugar cane processing

    SciTech Connect

    Ledovskykh, V.M.

    1988-07-01

    Secondary products of sugar cane processing (mosto, wax, furfurol) were studied as starting raw materials for creating inhibitors for different purposes and temporary means of protecting metals from corrosion. In order to protect metals in different corrosive media the following inhibitors have been developed: an inhibitor for acid solutions (pickling metals, acid washing of the equipment) based on high-tonnage water-soluble waste mosto and combined synergistic inhibitors based on mixtures of it with cation- and anion-active surfactants, including nitrogen- and sulfur-containing substances obtained by intentional synthesis of another secondary product, furfurol; inhibitors for two-phase media (oil recovery and refining) of the carbonic acid amide and 2-alkylimidazoline classes from sugar cane wax; and inhibitors comprised of Li-, Na-, Ca-, and Al-plastic greases from sugar cane wax for atmospheric conditions.

  17. Chemometric Characterization of Alembic and Industrial Sugar Cane Spirits from Cape Verde and Ceará, Brazil

    PubMed Central

    Pereira, Regina F. R.; Vidal, Carla B.; de Lima, Ari C. A.; Melo, Diego Q.; Dantas, Allan N. S.; Lopes, Gisele S.; do Nascimento, Ronaldo F.; Gomes, Clerton L.; da Silva, Maria Nataniela

    2012-01-01

    Sugar cane spirits are some of the most popular alcoholic beverages consumed in Cape Verde. The sugar cane spirit industry in Cape Verde is based mainly on archaic practices that operate without supervision and without efficient control of the production process. The objective of this work was to evaluate samples of industrial and alembic sugar cane spirits from Cape Verde and Ceará, Brazil using principal component analysis. Thirty-two samples of spirits were analyzed, twenty from regions of the islands of Cape Verde and twelve from Ceará, Brazil. Of the samples obtained from Ceará, Brazil seven are alembic and five are industrial spirits. The components analyzed in these studies included the following: volatile organic compounds (n-propanol, isobutanol, isoamylic, higher alcohols, alcoholic grade, acetaldehyde, acetic acid, acetate); copper; and sulfates. PMID:23227051

  18. Chemometric characterization of alembic and industrial sugar cane spirits from cape verde and ceará, Brazil.

    PubMed

    Pereira, Regina F R; Vidal, Carla B; de Lima, Ari C A; Melo, Diego Q; Dantas, Allan N S; Lopes, Gisele S; do Nascimento, Ronaldo F; Gomes, Clerton L; da Silva, Maria Nataniela

    2012-01-01

    Sugar cane spirits are some of the most popular alcoholic beverages consumed in Cape Verde. The sugar cane spirit industry in Cape Verde is based mainly on archaic practices that operate without supervision and without efficient control of the production process. The objective of this work was to evaluate samples of industrial and alembic sugar cane spirits from Cape Verde and Ceará, Brazil using principal component analysis. Thirty-two samples of spirits were analyzed, twenty from regions of the islands of Cape Verde and twelve from Ceará, Brazil. Of the samples obtained from Ceará, Brazil seven are alembic and five are industrial spirits. The components analyzed in these studies included the following: volatile organic compounds (n-propanol, isobutanol, isoamylic, higher alcohols, alcoholic grade, acetaldehyde, acetic acid, acetate); copper; and sulfates. PMID:23227051

  19. Computer simulation of combine harvesting and handling of sugar cane in Barbados

    SciTech Connect

    Harvey, W.O.

    1983-01-01

    The broad objective of this study was to improve the efficiency of combine harvesting of sugar cane in Barbados. The harvesting process was broken down into two subsystems: a field subsystem and a factory yard subsystem. Two computer simulation models structured in GASP IV simulation language, were developed to model the operations involved in these systems. Model FIELDOP simulated the activities involved in the harvesting and loading of cane in the field, and in its transportation to the factory for processing. Model FACYARD simulated the weighing and unloading activities performed on cane transport units at the factory. Output from the models included utilization factors for the various component machines, daily cane delivery from the field system, and daily amounts of cane handled by the factory yard system. This output was fed into a cost program which calculated unit harvesting costs and total annual cane delivery for the equipment combinations simulated. Results indicated that a second scale at the factory can reduce the factory residence time of transport units by 88%, increase combine harvester utilization efficiency by 50-60%, increase daily cane receipts at the factory by more than 30%, and eliminate milling lost time due to lack of cane. The economic analysis demonstrated that harvesting cost per tonne can be significantly reduced.

  20. Case-control study of lung cancer among sugar cane farmers in India

    PubMed Central

    Amre, D. K.; Infante-Rivard, C.; Dufresne, A.; Durgawale, P. M.; Ernst, P.

    1999-01-01

    OBJECTIVES: To investigate the risk of lung cancer among sugar cane farmers and sugar mill workers. METHODS: A case-control study was conducted based in six hospitals in the predominantly sugar cane farming districts of the province of Maharashtra in India. Newly diagnosed, histologically confirmed cases were identified from these hospitals between May 1996 and April 1998. Other cancers were chosen as controls and matched to cases by age, sex, district of residence, and timing of diagnosis. RESULTS: Adjusting for confounders, an increased risk of lung cancer was found for workers ever employed on a sugar cane farm (odds ratio (OR) 1.92, 95% confidence interval (95% CI) 1.08 to 3.40). Increased risks were found for work involving preparation of the farm (OR 1.81, 95% CI 0.99 to 3.27) and burning of the farm after harvesting (OR 1.82, 95% CI 0.99 to 3.34). Non-significant increases in risks were found for harvesting the crop (OR 1.41, 95% CI 0.70 to 2.90) and processing the cane in the mills (OR 1.70, 95% CI 0.20 to 12.60). CONCLUSIONS: Exposure to fibres of biogenic amorphous silica (BAS) formed from silica absorbed from the soil and deposited in the leaves of the sugar cane crop or crystalline silica formed as a result of conversion of BAS to cristobalite at high temperatures may account for the increased risks of lung cancer among sugar cane farmers.   PMID:10492653

  1. Design and Installation of Irrigation System for the Expansion of Sugar cane- Industries in Ahvaz, IRAN.

    NASA Astrophysics Data System (ADS)

    Afshari, E.; Afshari, S.

    2005-12-01

    This paper presents achievements of a twelve years ongoing project expansion of sugar cane- industries as a major agricultural development in Ahvaz, IRAN. The entire project is divided in to seven units and each unit provides irrigation water for 30,000 acres of sugar cane farms in Ahwaz. Absou Inc. is one of the consulting firms that is in charge of design and overseeing installation of irrigation system as well as the development of lands for sugar-cane cultivation at one of the units, called Farabi unit .In general, the mission of project is to Pump fresh water from Karoon River and direct it to the sugar cane farm for irrigation. In particular, the task of design and installation include, (1) build a pumping station at Karoon River with capacity of 1271 ft3/sec, (2) transfer water by main channel from Karoon rive to the farm site 19 miles (3) install a secondary pumping stations which direct water from main channel to drainage pipes and provides water for local farms (4) build a secondary channels which carries water with pipe lines with total length of 42 miles and diameter of 16 to 32 inch. (5) install drainage pump stations and collectors (6) level the ground surface and prepare it for irrigation (7) build railroad for carrying sugar canes (23 miles). Thus far, more than 15,000 acres of farm in Farabi unit is under sugar cane cultivation. The presentation will illustrate more details about different aspects of the project including design, installation and construction phases.

  2. Rapid screening for anthocyanins in cane sugars using ESR spectroscopy.

    PubMed

    Thamaphat, Kheamrutai; Goodman, Bernard A; Limsuwan, Pichet; Smith, Siwaporn Meejoo

    2015-03-15

    Anthocyanin, which is soluble in water and released into sugar steam during extraction, was investigated in this study. The anthocyanin content in refined sugar, plantation white sugar, soft brown sugar and raw sugar was determined using electron spin resonance (ESR) spectroscopy, which was operated at room temperature, and compared with spectra from standard anthocyanin. The ESR spectra of red and violet anthocyanins was predominantly g ? 2.0055, which corresponded to an unpaired electron located in the pyrylium ring. Signals for Fe(III) and Mn(II), which naturally occur in plants, were found in raw sugar, soft brown sugar and standard anthocyanin but were absent from refined sugar and plantation white sugar due to the refining process. In addition, the ESR results were correlated with the apparent colour of the sugar, which was determined using the method of the International Commission for Uniform Methods of Sugar Analysis and inductively coupled plasma optical emission spectroscopy. PMID:25308651

  3. Dosimetric evaluation of sucrose and granulated cane sugar in the therapeutic dose range

    SciTech Connect

    Davidson, Melanie T. M.; Jordan, Kevin J.

    2009-04-15

    Granulated cane sugar has been used as a dosimetric material to report dose in high dose accidental irradiations. The purpose of this study was to assess whether clinical dosimetry is also plausible with such a commonly available material. The behavior of cane sugar was explored with respect to therapeutically relevant radiation quantities (dose, dose rate) and qualities (energy, radiation type) as well as under different temperature conditions. The stability of the signal postirradiation was also measured. Absorbed dose was measured by spectrophotometric readout of a ferrous ammonium sulfate xylenol orange (FX)-sugar solution in 10 cm path length cells. A visible color change was produced as a function of dose when the irradiated sugar samples were dissolved in FX solution (10% dilution by mass). A comparison of the optical absorbance spectra and dose response of cane sugar with analytical grade sucrose was done to establish a benchmark standard from which subsequent dosimetry measurements can be validated. The response of the sugar dosimeter read at 590 nm was found to be linear over the dose range of 100-2000 cGy, independent of energy (6-18 MV) and of the average dose rate (100-500 cGy/min). The readout of sugar samples irradiated with mixed photon and electron fields was also shown to be independent of radiation type (photons and electrons). Sugar temperature (20-40 degree sign C) during irradiation did not affect dose estimates, making it a promising dosimeter for in vivo dosimetry, particularly in cases where the dosimeter must remain in contact with the patient for an extended period of time. Sugar can be used as an integrating dosimeter, since it exhibits no fractionation effects. Granulated cane sugar is cost effective, safe, soft tissue equivalent, and can be used under various experimental conditions, making it a suitable dosimeter for some radiotherapy applications.

  4. Dosimetric evaluation of sucrose and granulated cane sugar in the therapeutic dose range.

    PubMed

    Davidson, Melanie T M; Jordan, Kevin J

    2009-04-01

    Granulated cane sugar has been used as a dosimetric material to report dose in high dose accidental irradiations. The purpose of this study was to assess whether clinical dosimetry is also plausible with such a commonly available material. The behavior of cane sugar was explored with respect to therapeutically relevant radiation quantities (dose, dose rate) and qualities (energy, radiation type) as well as under different temperature conditions. The stability of the signal postirradiation was also measured. Absorbed dose was measured by spectrophotometric readout of a ferrous ammonium sulfate xylenol orange (FX)-sugar solution in 10 cm path length cells. A visible color change was produced as a function of dose when the irradiated sugar samples were dissolved in FX solution (10% dilution by mass). A comparison of the optical absorbance spectra and dose response of cane sugar with analytical grade sucrose was done to establish a benchmark standard from which subsequent dosimetry measurements can be validated. The response of the sugar dosimeter read at 590 nm was found to be linear over the dose range of 100-2000 cGy, independent of energy (6-18 MV) and of the average dose rate (100-500 cGy/min). The readout of sugar samples irradiated with mixed photon and electron fields was also shown to be independent of radiation type (photons and electrons). Sugar temperature (20-40 degrees C) during irradiation did not affect dose estimates, making it a promising dosimeter for in vivo dosimetry, particularly in cases where the dosimeter must remain in contact with the patient for an extended period of time. Sugar can be used as an integrating dosimeter, since it exhibits no fractionation effects. Granulated cane sugar is cost effective, safe, soft tissue equivalent, and can be used under various experimental conditions, making it a suitable dosimeter for some radiotherapy applications. PMID:19472641

  5. Structural and physicochemical characteristics of starch from sugar cane and sweet sorghum stalks.

    PubMed

    Alves, Fernanda Viginotti; Polesi, Luís Fernando; Aguiar, Cláudio Lima; Sarmento, Silene Bruder Silveira

    2014-10-13

    The starch present in sugar cane and sorghum juice has been considered a problem to the sugar industry. The objective of this work was to study the structural and physicochemical characteristics of the starch present in sugar cane and sweet sorghum. Sugar cane and sweet sorghum starches presented small granules (maximum 5.9 and 7.9 μm), A-type diffraction pattern, high degree of relative crystallinity (44.4 and 42.0%), and low amylose content (17.5 and 16.4%), respectively. Sugar cane starch presented more uniformity in granule shape and size, more homogeneity in amylose chain length, higher number of long lateral chains of amylopectin, and higher susceptibility to enzymatic digestion. Besides being in higher amount in the juice, sweet sorghum starch presented lower values for thermal properties of gelatinization, as well as higher swelling factor, which can cause more problems during processing. Additional studies are needed to evaluate the variety and maturity influence on these properties. PMID:25037392

  6. The impact of stress on the health of sugar cane cutters

    PubMed Central

    Priuli, Roseana Mara Aredes; de Moraes, Maria Silvia; Chiaravalloti, Rafael Morais

    2014-01-01

    OBJECTIVE Evaluate the impact of stress on sugar cane cutters and the prevalence of physical and psychological symptoms before and after harvest. METHODS We studied 114 sugarcane cutters and 109 urban workers in the pre-harvest and 102 sugar cane cutters and 81 urban workers in the post-harvest period in the city of Mendonça, SP, Southeastern Brazil, in 2009. Data analysis was based on the frequency and percentage of the assessed symptoms of stress, using the Lipp-ISSL test (Symptoms of Stress for Adults). The data were analyzed using descriptive statistics. The Fisher Test was used to compare the variable of stress between pre- and post-harvest within the sugar cane cutter and urban worker groups. P values below 0.05 were considered significant. RESULTS Stress in sugar cane cutters increased after harvesting (34.2% pre-harvest and 46.1% post-harvest); in urban workers, stress decreased from 44.0% pre-harvest to 42.0% post-harvest. There was prevalence of the phase of resistance to stress for both groups with signs more apparent from the near-exhaustion and exhaustion phases for sugar cane cutters. After harvest, there was a tendency for the number of sugar cane cutters with symptoms of near-exhaustion (6.4%) and exhaustion (10.6%) to increase. After harvest there was a trend for the number of sugar cane cutters with physical symptoms (pre-harvest = 20.5%, post-harvest = 25.5%) and psychological symptoms (pre-harvest = 64.1%; post-harvest = 70.2%) to increase. For both groups, predominantly psychological symptoms occurred in both phases (70.2% versus 64.7%). CONCLUSIONS The work process of cutting cane can cause stress. Individual factors such as cognitive perception of the experience, self-efficacy beliefs and expectations of the employee regarding their performance can influence the understanding of the reactions in their body in face of the work. PMID:24897043

  7. Firmicutes dominate the bacterial taxa within sugar-cane processing plants

    PubMed Central

    Sharmin, Farhana; Wakelin, Steve; Huygens, Flavia; Hargreaves, Megan

    2013-01-01

    Sugar cane processing sites are characterised by high sugar/hemicellulose levels, available moisture and warm conditions, and are relatively unexplored unique microbial environments. The PhyloChip microarray was used to investigate bacterial diversity and community composition in three Australian sugar cane processing plants. These ecosystems were highly complex and dominated by four main Phyla, Firmicutes (the most dominant), followed by Proteobacteria, Bacteroidetes, and Chloroflexi. Significant variation (p < 0.05) in community structure occurred between samples collected from ‘floor dump sediment’, ‘cooling tower water’, and ‘bagasse leachate’. Many bacterial Classes contributed to these differences, however most were of low numerical abundance. Separation in community composition was also linked to Classes of Firmicutes, particularly Bacillales, Lactobacillales and Clostridiales, whose dominance is likely to be linked to their physiology as ‘lactic acid bacteria’, capable of fermenting the sugars present. This process may help displace other bacterial taxa, providing a competitive advantage for Firmicutes bacteria. PMID:24177592

  8. Firmicutes dominate the bacterial taxa within sugar-cane processing plants.

    PubMed

    Sharmin, Farhana; Wakelin, Steve; Huygens, Flavia; Hargreaves, Megan

    2013-01-01

    Sugar cane processing sites are characterised by high sugar/hemicellulose levels, available moisture and warm conditions, and are relatively unexplored unique microbial environments. The PhyloChip microarray was used to investigate bacterial diversity and community composition in three Australian sugar cane processing plants. These ecosystems were highly complex and dominated by four main Phyla, Firmicutes (the most dominant), followed by Proteobacteria, Bacteroidetes, and Chloroflexi. Significant variation (p < 0.05) in community structure occurred between samples collected from 'floor dump sediment', 'cooling tower water', and 'bagasse leachate'. Many bacterial Classes contributed to these differences, however most were of low numerical abundance. Separation in community composition was also linked to Classes of Firmicutes, particularly Bacillales, Lactobacillales and Clostridiales, whose dominance is likely to be linked to their physiology as 'lactic acid bacteria', capable of fermenting the sugars present. This process may help displace other bacterial taxa, providing a competitive advantage for Firmicutes bacteria. PMID:24177592

  9. Increased estimates of air-pollution emissions from Brazilian sugar-cane ethanol

    NASA Astrophysics Data System (ADS)

    Tsao, C.-C.; Campbell, J. E.; Mena-Carrasco, M.; Spak, S. N.; Carmichael, G. R.; Chen, Y.

    2012-01-01

    Accelerating biofuel production has been promoted as an opportunity to enhance energy security, offset greenhouse-gas emissions and support rural economies. However, large uncertainties remain in the impacts of biofuels on air quality and climate. Sugar-cane ethanol is one of the most widely used biofuels, and Brazil is its largest producer. Here we use a life-cycle approach to produce spatially and temporally explicit estimates of air-pollutant emissions over the whole life cycle of sugar-cane ethanol in Brazil. We show that even in regions where pre-harvest field burning has been eliminated on half the croplands, regional emissions of air pollutants continue to increase owing to the expansion of sugar-cane growing areas, and burning continues to be the dominant life-cycle stage for emissions. Comparison of our estimates of burning-phase emissions with satellite estimates of burning in São Paulo state suggests that sugar-cane field burning is not fully accounted for in satellite-based inventories, owing to the small spatial scale of individual fires. Accounting for this effect leads to revised regional estimates of burned area that are four times greater than some previous estimates. Our revised emissions maps thus suggest that biofuels may have larger impacts on regional climate forcing and human health than previously thought.

  10. CROSS RESISTANCE IN SUGAR CANE TO THE MEXICAN RICE BORER AND THE SUGARCANE BORER (LEPIDOPTERA: CRAMBIDAE)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The sugarcane borer, Diatraea saccharalis (F.), has been the dominant stemborer of sugar cane in the United States. However, in 1980, the Mexican rice borer, Eoreuma loftini (Dyar), became established in the Lower Rio Grande Valley of Texas and has since supplanted the sugarcane borer as the dominan...

  11. A review of the 2006 International Society of Sugar Cane Technologists' Pathology Workshop

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The International Society of Sugar Cane Technologists’ (ISSCT) Pathology Workshop was held on January 23-27, 2006, at the INRA Research Center in Petit Bourg, Guadeloupe, French West Indies and was hosted by CIRAD and organized by Jean Heinrich Daugrois and the CIRAD staff. There were 30 delegates ...

  12. Direct impacts on local climate of sugar-cane expansion in Brazil

    NASA Astrophysics Data System (ADS)

    Loarie, Scott R.; Lobell, David B.; Asner, Gregory P.; Mu, Qiaozhen; Field, Christopher B.

    2011-05-01

    The increasing global demand for biofuels will require conversion of conventional agricultural or natural ecosystems. Expanding biofuel production into areas now used for agriculture reduces the need to clear natural ecosystems, leading to indirect climate benefits through reduced greenhouse-gas emissions and faster payback of carbon debts. Biofuel expansion may also cause direct, local climate changes by altering surface albedo and evapotranspiration, but these effects have been poorly documented. Here we quantify the direct climate effects of sugar-cane expansion in the Brazilian Cerrado, on the basis of maps of recent sugar-cane expansion and natural-vegetation clearance combined with remotely sensed temperature, albedo and evapotranspiration over a 1.9millionkm2 area. On a regional basis for clear-sky daytime conditions, conversion of natural vegetation to a crop/pasture mosaic warms the cerrado by an average of 1.55 (1.45-1.65)°C, but subsequent conversion of that mosaic to sugar cane cools the region by an average of 0.93 (0.78-1.07)°C, resulting in a mean net increase of 0.6°C. Our results indicate that expanding sugar cane into existing crop and pasture land has a direct local cooling effect that reinforces the indirect climate benefits of this land-use option.

  13. Sugar cane management with humic extract and organic and mineral fertilizer: impacts on Oxisol some physical properties

    NASA Astrophysics Data System (ADS)

    Alves, M. C.; Campos, F. S.; Souza, Z. M.

    2012-04-01

    The present investigation has as objective to study the impact of cultive systems, humic extract and organic and mineral fertilizers on Oxisol some physical properties cultivated of sugar cane. It was developed in Aparecida do Taboado, Mato Grosso do Sul, Brazil, in Manufactores Alcoolvale. The study was in sugar cane culture implanted on 3th and 4th cycle. The experimental design was at randomized blocks following scheme in zone with eight treatments and four replications. The two treatments in main zone were represented by cultivation systems (with and without chisel) and the subzone fertilization (T1-mineral, T2-mineral+sugar cane residue, T3-mineral+humic and fulvic acids and T4-mix of mineral, sugar cane residue and humic and fulvic acids). In three soil layers: 0.00-0.05; 0.10-0.20 and 0.20-0.40 m were studied the physical soil properties: macroporosity, microporosity, total porosity and soil bulk density. Also evaluate the technological quality of sugar cane. The conclusions are: the application of mineral fertilizer+sugar cane residue+humic extract (Humitec ®) and cropping system with chisel were more effective in improving soil physical; the system of crop of sugar cane ratton implanted in the 2th and 3th cycle, without the use of chisel was better in the recovery of soil physical properties; the crop system without the chisel and the combination of mineral fertilizer+sugar cane residue was promising to increase of Brix, Pol juice, Pol sugar cane and total recoverable sugars Pol.

  14. Pyrolysis of olive residue and sugar cane bagasse: non-isothermal thermogravimetric kinetic analysis.

    PubMed

    Ounas, A; Aboulkas, A; El Harfi, K; Bacaoui, A; Yaacoubi, A

    2011-12-01

    Thermal degradation and kinetics for olive residue and sugar cane bagasse have been evaluated under dynamic conditions in the presence of nitrogen atmosphere, using a non-isothermal thermogravimetric method (TGA). The effect of heating rate was evaluated in the range of 2-50 K min(-1) providing significant parameters for the fingerprinting of the biomass. The DTG plot for the olive residue and sugar cane bagasse clearly shows that the bagasse begins to degrade at 473 K and exhibits two major peaks. The initial mass-loss was associated with hemicellulose pyrolysis and responsible for the first peak (538-543 K) whereas cellulose pyrolysis was initiated at higher temperatures and responsible for the second peak (600-607 K). The two biomass mainly devolatilized around 473-673 K, with total volatile yield of about 70-75%. The char in final residue was about 19-26%. Mass loss and mass loss rates were strongly affected by heating rate. It was found that an increase in heating rate resulted in a shift of thermograms to higher temperatures. Ozawa-Flynn-Wall and Vyazovkin methods were applied to determine apparent activation energy to the olive residue and sugar cane bagasse. Two different steps were detected with apparent activation energies in the 10-40% conversion range have a value of 153-162 kJ mol(-1) and 168-180 kJ mol(-1) for the hemicellulose degradation of olive residue and sugar cane bagasse, respectively. In the 50-80% conversion range, this value is 204-215 kJ mol(-1) and 231-240 kJ mol(-1) for the cellulose degradation of olive residue and sugar cane bagasse, respectively. PMID:22004591

  15. Relationship of maximum aerobic power output to productivity and absenteeism of East African sugar cane workers

    PubMed Central

    Davies, C. T. M.

    1973-01-01

    Davies, C. T. M. (1973).British Journal of Industrial Medicine,30, 146-154. Relationship of maximum aerobic power output to productivity and absenteeism of East African sugar cane workers. The relationship of the physiological responses to laboratory exercise on an upright bicycle ergometer and predicted maximum aerobic power output (V?O2max) to daily and season output has been investigated in 78 cane cutters aged 18 to 50 years working on the Kilombero sugar estate, Tanzania. The results showed that the (V?O2max) was independent of absolute productivity in terms of kilotons of cane cut per season but positively correlated (r = + 0·46) with daily output. There was a small but significant (r = - 0·32, P < 0·001) negative association of V?O2max with the number of days that an individual voluntarily absented himself from the cane fields. The importance of these findings to the selection and training of personnel for the cane-cutting industry are discussed. It was suggested that the industry might consider the introduction of a simple exercise (step) test together with a medical examination and simple anthropometric measurements at the time of recruitment of workers at the beginning of the season. PMID:4703085

  16. 78 FR 56646 - Determination of Total Amounts of Fiscal Year 2014 WTO Tariff-Rate Quotas for Raw Cane Sugar and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-13

    ... Tariff- Rate Quotas for Raw Cane Sugar and Certain Sugars, Syrups and Molasses AGENCY: Office of the...-quota aggregate quantity of raw cane sugar at 1,117,195 metric tons raw value (MTRV). The Secretary also announces the establishment of the FY 2014 in-quota aggregate quantity of certain sugars, syrups,...

  17. Effect of acid hydrolysis and fungal biotreatment on agro-industrial wastes for obtainment of free sugars for bioethanol production.

    PubMed

    El-Tayeb, T S; Abdelhafez, A A; Ali, S H; Ramadan, E M

    2012-10-01

    This study was designed to evaluate selected chemical and microbiological treatments for the conversion of certain local agro-industrial wastes (rice straw, corn stalks, sawdust, sugar beet waste and sugarcane bagasse) to ethanol. The chemical composition of these feedstocks was determined. Conversion of wastes to free sugars by acid hydrolysis varied from one treatment to another. In single-stage dilute acid hydrolysis, increasing acid concentration from 1 % (v/v) to 5 % (v/v) decreased the conversion percentage of almost all treated agro-industrial wastes. Lower conversion percentages for some treatments were obtained when increasing the residence time from 90 to 120 min. The two-stage dilute acid hydrolysis by phosphoric acid (1.0 % v/v) followed by sulphuric acid (1.0 % v/v) resulted in the highest conversion percentage (41.3 % w/w) on treated sugar beet waste. This treatment when neutralized, amended with some nutrients and inoculated with baker's yeast, achieved the highest ethanol concentration (1.0 % v/v). Formation of furfural and hydroxymethylfurfural (HMF) were functions of type of acid hydrolysis, acid concentration, residence time and feedstock type. The highest bioconversion of 5 % wastes (37.8 % w/w) was recorded on sugar beet waste by Trichoderma viride EMCC 107. This treatment when followed by baker's yeast fermentation, 0.41 % (v/v) ethanol and 8.2 % (v/w) conversion coefficient were obtained. PMID:24031984

  18. Effect of acid hydrolysis and fungal biotreatment on agro-industrial wastes for obtainment of free sugars for bioethanol production

    PubMed Central

    El-Tayeb, T.S.; Abdelhafez, A.A.; Ali, S.H.; Ramadan, E.M.

    2012-01-01

    This study was designed to evaluate selected chemical and microbiological treatments for the conversion of certain local agro-industrial wastes (rice straw, corn stalks, sawdust, sugar beet waste and sugarcane bagasse) to ethanol. The chemical composition of these feedstocks was determined. Conversion of wastes to free sugars by acid hydrolysis varied from one treatment to another. In single-stage dilute acid hydrolysis, increasing acid concentration from 1 % (v/v) to 5 % (v/v) decreased the conversion percentage of almost all treated agro-industrial wastes. Lower conversion percentages for some treatments were obtained when increasing the residence time from 90 to 120 min. The two-stage dilute acid hydrolysis by phosphoric acid (1.0 % v/v) followed by sulphuric acid (1.0 % v/v) resulted in the highest conversion percentage (41.3 % w/w) on treated sugar beet waste. This treatment when neutralized, amended with some nutrients and inoculated with baker’s yeast, achieved the highest ethanol concentration (1.0 % v/v). Formation of furfural and hydroxymethylfurfural (HMF) were functions of type of acid hydrolysis, acid concentration, residence time and feedstock type. The highest bioconversion of 5 % wastes (37.8 % w/w) was recorded on sugar beet waste by Trichoderma viride EMCC 107. This treatment when followed by baker’s yeast fermentation, 0.41 % (v/v) ethanol and 8.2 % (v/w) conversion coefficient were obtained. PMID:24031984

  19. Spatial relationship between the productivity of cane sugar and soil electrical conductivity measured by electromagnetic induction

    NASA Astrophysics Data System (ADS)

    Siqueira, Glecio; Silva, Jucicléia; Bezerra, Joel; Silva, Enio; Montenegro, Abelardo

    2013-04-01

    The cultivation of sugar cane in Brazil occupies a prominent place in national production chain, because the country is the main world producer of sugar and ethanol. Accordingly, studies are needed that allow an integrated production and technified, and especially that estimates of crops are consistent with the actual production of each region. The objective of this study was to determine the spatial relationship between the productivity of cane sugar and soil electrical conductivity measured by electromagnetic induction. The field experiment was conducted at an agricultural research site located in Goiana municipality, Pernambuco State, north-east of Brazil (Latitude 07 ° 34 '25 "S, Longitude 34 ° 55' 39" W). The surface of the studied field is 6.5 ha, and its mean height 8.5 m a.s.l. This site has been under sugarcane (Saccharum officinarum sp.) monoculture during the last 24 years and it was managed burning the straw each year after harvesting, renewal of plantation was performed every 7 years. Studied the field is located 10 km east from Atlantic Ocean and it is representative of the regional landscape lowlands, whose soils are affected by salinity seawater, sugarcane plantations with the main economical activity. Soil was classified an orthic the Podsol. The productivity of cane sugar and electrical conductivity were measured in 90 sampling points. The productivity of cane sugar was determined in each of the sampling points in plots of 9 m2. The Apparent soil electrical conductivity (ECa, mS m-1) was measured with an electromagnetic induction device EM38-DD (Geonics Limited). The equipment consists of two units of measurement, one in a horizontal dipole (ECa-H) to provide effective measurement distance of 1.5 m approximately and other one in vertical dipole (ECa-V) with an effective measurement depth of approximately 0.75 m. Data were analyzed using descriptive statistics and geostatistical tools. The results showed that productivity in the study area reached values above 200 t ha-1, with higher values of productivity are concentrated in the region northern terrain. The maps of soil electrical conductivity (ECa-V and ECa-H) showed behavior similar to the productivity of cane sugar. The linear correlation showed values of 0.74 (yield x ECa-H) and 0.85 (yield x ECa-V). The adjusted semivariograms showed no similarity in the spatial pattern of pairs of semivariance. The electrical conductivity measured by electromagnetic induction has been shown as an important tool for predicting the productivity of sugar cane, however more studies are needed to determine the magnitude of the differences between such attributes.

  20. Recovery of used frying sunflower oil with sugar cane industry waste and hot water.

    PubMed

    Ali, Rehab F M; El Anany, A M

    2014-11-01

    The main goal of the current investigation was to use sugar cane bagasse ash (SCBA) and to compare its adsorption efficiency with Magnesol XL as synthetic adsorbents to regenerate the quality of used frying sunflower oil. In addition, to evaluate the effect of water washing process on the quality of used frying oil and the treated oil. The metal patterns of sugar cane bagasse ash and Magnesol XL were determined. Some physical and chemical properties of unused, used frying and used-treated sunflower oil were determined. Sunflower oil sample was heated at 180 °C + 5 °C, then frozen French fries potato were fried every 30 min. during a continuous period of 20 h. Oil samples were taken every 4 h. The filter aids were added individually to the used frying oil at levels 1, 2 and 3 % (w / v), then mechanically stirred for 60 min at 105 °C. The results indicate that all the filter aids under study were characterized by high levels of Si and variable levels of other minerals. The highest level of Si was recorded for sugar cane bagasse ash (SCBA) was 76.79 wt. %. Frying process caused significant (P ≤ 0.05) increases in physico-chemical properties of sunflower oil. The treatments of used frying sunflower oil with different levels of sugar cane bagasse ash and Magnesol XL caused significant (P ≤ 0.05) increase in the quality of treated oil, however the soap content of treated oil was increased, therefore, the effect of water washing process on the quality of used frying and used-treated sunflower oil was evaluated. The values of soap and Total polar compounds after water treatment were about 4.62 and 7.27 times as low as that for sunflower oil treated with 3 % sugar cane bagasse ash (SCBA). The results of the present study indicate that filtration treatment with different levels of sugar cane bagasse ash( SCBA) regenerated the quality of used sunflower oil and possess higher adsorbing effects than the synthetic filter aid ( Magnesol XL ) in removing oil oxidation products. The current study also recommends using hot water treatment for improving the quality of used frying oil. PMID:26396293

  1. Briquetting of charcoal from sugar-cane bagasse fly ash (scbfa) as an alternative fuel.

    PubMed

    Teixeira, S R; Pena, A F V; Miguel, A G

    2010-05-01

    Brazil is the largest worldwide producer of alcohol and sugar from sugar-cane and has an extensive alternative program for car fuel which is unique. The objective of this work is to offer one management option of a solid residue produced by this industrial segment. The pressed sugar-cane bagasse is burned to produce steam and electricity by cogeneration. The combustion yields both bottom and fly ashes which contain high amounts of silicon oxide as a major component. Fly ash which contains a high volume (>30% by weight) of charcoal was used in this work. The ash was sieved to separate the thick charcoal from inorganic materials which are concentrated in the thinner fraction. The briquettes were hand pressed using charcoal mixed with a binder (starch) obtained from cassava flour (a tropical root). The results (density, mechanical resistance) obtained with 8% by weight of starch binder are presented here. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to characterize the ashes and the briquettes. The results show that sugar-cane bagasse fly ash (SCBFA) can be used to produce briquettes with an average density of 1.12gcm(-3) and an average calorific value of 25,551kJ/kg. PMID:20133118

  2. Cytogenetic biomonitoring of occupationally exposed workers to ashes from burning of sugar cane in Ahome, Sinaloa, México.

    PubMed

    Martínez-Valenzuela, Carmen; Rodríguez-Quintana, Ana Rosa; Meza, Enrique; Waliszewski, Stefan M; Amador-Muñóz, Omar; Mora-Romero, Arlene; Calderón-Segura, María Elena; Félix-Gastélum, Rubén; Rodríguez-Romero, Isabel; Caba, Mario

    2015-09-01

    Burning the sugar cane field before harvesting has a negative impact on both air and human health, however this issue had not been explored in Mexico. The objective of this work was to determine the chromosomal damage in workers from sugar cane burning fields in Sinaloa, México. To this purpose, we analyzed 1000 cells of buccal exfoliated epithelia from 60 exposed workers and 60 non-exposed controls to determine micronucleus frequencies and other nuclear abnormalities. The results indicated significant higher values of micronucleus and nuclear abnormalities such as binucleate cells, pyknosis, karyolysis, chromatin condensation and nuclear buds frequencies in the exposed subjects compared to those that were not exposed. Our data indicates that sugar cane burning, that generates polycyclic aromatic hydrocarbons, represents a genotoxic risk for workers in this important sugar cane producing area in Mexico. PMID:26245813

  3. Characterisation of sugar cane straw waste as pozzolanic material for construction: Calcining temperature and kinetic parameters

    SciTech Connect

    Frias, Moises

    2007-07-01

    This paper reports on the influence of calcining temperature (800 and 1000 deg. C) on the pozzolanic activation of sugar cane straw (SCS). The reaction kinetics of SCS ash-lime mixtures were inferred from physicochemical characteristics (X-ray diffraction patterns and thermogravimetry analysis. The fitting of a kinetic-diffusive model to the experimental data (fixed lime versus time) allowed the computing of the kinetic parameters (reaction rate constant) of the pozzolanic reaction. Results obtained confirm that the sugar cane straw ash (SCSA) calcined at 800 and 1000 deg. C have properties indicative of very high pozzolanic activity. No influence of calcining temperature on the pozzolanic activity was observed. Also, no crystalline compounds during the pozzolanic reaction were identified up to 90 days of reaction. Environmental durability and strength of the consequential mortars remain to be assessed.

  4. Lactic acid production from sugar-cane juice by a newly isolated Lactobacillus sp.

    PubMed

    Timbuntam, Walaiporn; Sriroth, Klanarong; Tokiwa, Yutaka

    2006-06-01

    A newly isolated sucrose-tolerant, lactic acid bacterium, Lactobacillus sp. strain FCP2, was grown on sugar-cane juice (125 g sucrose l(-1), 8 g glucose l(-1) and 6 g fructose l(-1)) for 5 days and produced 104 g lactic acid l(-1) with 90% yield. A higher yield (96%) and productivity (2.8 g l(-1 )h(-1)) were obtained when strain FCP2 was cultured on 3% w/v (25 g sucrose l(-1), 2 g glucose l(-1) and 1 g fructose l(-1)) sugar-cane juice for 10 h. Various cheap nitrogen sources such as silk worm larvae, beer yeast autolysate and shrimp wastes were also used as a substitute to yeast extract. PMID:16786246

  5. [The sugar cane blight of the 1860s: science applied to agriculture].

    PubMed

    Bediaga, Begonha

    2012-12-01

    The Imperial Instituto Fluminense de Cultura (Fluminense Imperial Institute of Agriculture) encouraged debate with a view to eradicating the blight that devastated sugar cane plantations in the State of Bahia. Rural landowners, government officials and men of science participated in the discussions. The article presents the context of the sciences applied to agriculture, especially agricultural chemistry and the repercussions of the 'discoveries' of Justus Liebig in Brazil. The debate at the Imperial Instituto about the sugar cane blight was analyzed, together with the ideas espoused there and the characters involved in the issue. The procedures and solutions presented are studied, as well as the formation of knowledge networks around the agricultural sciences, which was in the process of institutionalization at the time. PMID:23184239

  6. Congeners in sugar cane spirits aged in casks of different woods.

    PubMed

    Bortoletto, Aline M; Alcarde, André R

    2013-08-15

    The profile of volatile compounds and aging markers in sugar cane spirits aged for 36 months in casks made of 10 types of wood were studied. The ethanol content, volatile acidity, aldehydes, esters, higher alcohols, and methanol were determined. In addition, gallic, vanilic and syringic acids, siringaldehyde, coniferaldehyde, sinapaldehyde, vanillin, 5-hydroxymethylfurfural and furfural were identified and quantified. The profile of volatile compounds characterised aging in each type of wood. The beverage aged in oak cask achieved the highest contents of maturation-related congeners. The Brazilian woods, similar to oak, were jequitibá rosa and cerejeira, which presented the highest contents of some maturation-related compounds, such as vanillin, vanilic acid, syringaldehyde and sinapaldehyde. Although oak wood conferred more chemical complexity to the beverage, Brazilian woods, singly or complementarily, present potential for spirit characterisation and for improving the quality of sugar cane spirits. PMID:23561163

  7. Estimation of the sugar cane cultivated area from LANDSAT images using the two phase sampling method

    NASA Technical Reports Server (NTRS)

    Parada, N. D. J. (Principal Investigator); Cappelletti, C. A.; Mendonca, F. J.; Lee, D. C. L.; Shimabukuro, Y. E.

    1982-01-01

    A two phase sampling method and the optimal sampling segment dimensions for the estimation of sugar cane cultivated area were developed. This technique employs visual interpretations of LANDSAT images and panchromatic aerial photographs considered as the ground truth. The estimates, as a mean value of 100 simulated samples, represent 99.3% of the true value with a CV of approximately 1%; the relative efficiency of the two phase design was 157% when compared with a one phase aerial photographs sample.

  8. Preliminary statistical studies concerning the Campos RJ sugar cane area, using LANDSAT imagery and aerial photographs

    NASA Technical Reports Server (NTRS)

    Parada, N. D. J. (Principal Investigator); Costa, S. R. X.; Paiao, L. B. F.; Mendonca, F. J.; Shimabukuro, Y. E.; Duarte, V.

    1983-01-01

    The two phase sampling technique was applied to estimate the area cultivated with sugar cane in an approximately 984 sq km pilot region of Campos. Correlation between existing aerial photography and LANDSAT data was used. The two phase sampling technique corresponded to 99.6% of the results obtained by aerial photography, taken as ground truth. This estimate has a standard deviation of 225 ha, which constitutes a coefficient of variation of 0.6%.

  9. Effect of the atmosphere on the classification of LANDSAT data. [Identifying sugar canes in Brazil

    NASA Technical Reports Server (NTRS)

    Dejesusparada, N. (Principal Investigator); Morimoto, T.; Kumar, R.; Molion, L. C. B.

    1979-01-01

    The author has identified the following significant results. In conjunction with Turner's model for the correction of satellite data for atmospheric interference, the LOWTRAN-3 computer was used to calculate the atmospheric interference. Use of the program improved the contrast between different natural targets in the MSS LANDSAT data of Brasilia, Brazil. The classification accuracy of sugar canes was improved by about 9% in the multispectral data of Ribeirao Preto, Sao Paulo.

  10. Differentially delayed root proteome responses to salt stress in sugar cane varieties.

    PubMed

    Pacheco, Cinthya Mirella; Pestana-Calsa, Maria Clara; Gozzo, Fabio Cesar; Mansur Custodio Nogueira, Rejane Jurema; Menossi, Marcelo; Calsa, Tercilio

    2013-12-01

    Soil salinity is a limiting factor to sugar cane crop development, although in general plants present variable mechanisms of tolerance to salinity stress. The molecular basis underlying these mechanisms can be inferred by using proteomic analysis. Thus, the objective of this work was to identify differentially expressed proteins in sugar cane plants submitted to salinity stress. For that, a greenhouse experiment was established with four sugar cane varieties and two salt conditions, 0 mM (control) and 200 mM NaCl. Physiological and proteomics analyses were performed after 2 and 72 h of stress induction by salt. Distinct physiological responses to salinity stress were observed in the varieties and linked to tolerance mechanisms. In proteomic analysis, the roots soluble protein fraction was extracted, quantified, and analyzed through bidimensional electrophoresis. Gel images analyses were done computationally, where in each contrast only one variable was considered (salinity condition or variety). Differential spots were excised, digested by trypsin, and identified via mass spectrometry. The tolerant variety RB867515 showed the highest accumulation of proteins involved in growth, development, carbohydrate and energy metabolism, reactive oxygen species metabolization, protein protection, and membrane stabilization after 2 h of stress. On the other hand, the presence of these proteins in the sensitive variety was verified only in stress treatment after 72 h. These data indicate that these stress responses pathways play a role in the tolerance to salinity in sugar cane, and their effectiveness for phenotypical tolerance depends on early stress detection and activation of the coding genes expression. PMID:24251627

  11. Life cycle greenhouse gas emissions of sugar cane renewable jet fuel.

    PubMed

    Moreira, Marcelo; Gurgel, Angelo C; Seabra, Joaquim E A

    2014-12-16

    This study evaluated the life cycle GHG emissions of a renewable jet fuel produced from sugar cane in Brazil under a consequential approach. The analysis included the direct and indirect emissions associated with sugar cane production and fuel processing, distribution, and use for a projected 2020 scenario. The CA-GREET model was used as the basic analytical tool, while Land Use Change (LUC) emissions were estimated employing the GTAP-BIO-ADV and AEZ-EF models. Feedstock production and LUC impacts were evaluated as the main sources of emissions, respectively estimated as 14.6 and 12 g CO2eq/MJ of biofuel in the base case. However, the renewable jet fuel would strongly benefit from bagasse and trash-based cogeneration, which would enable a net life cycle emission of 8.5 g CO2eq/MJ of biofuel in the base case, whereas Monte Carlo results indicate 21 ± 11 g CO2eq/MJ. Besides the major influence of the electricity surplus, the sensitivity analysis showed that the cropland-pasture yield elasticity and the choice of the land use factor employed to sugar cane are relevant parameters for the biofuel life cycle performance. Uncertainties about these estimations exist, especially because the study relies on projected performances, and further studies about LUC are also needed to improve the knowledge about their contribution to the renewable jet fuel life cycle. PMID:25419647

  12. Including sugar cane in the agro-ecosystem model ORCHIDEE-STICS: calibration and validation

    NASA Astrophysics Data System (ADS)

    Valade, A.; Vuichard, N.; Ciais, P.; Viovy, N.

    2011-12-01

    Sugarcane is currently the most efficient bioenergy crop with regards to the energy produced per hectare. With approximately half the global bioethanol production in 2005, and a devoted land area expected to expand globally in the years to come, sugar cane is at the heart of the biofuel debate. Dynamic global vegetation models coupled with agronomical models are powerful and novel tools to tackle many of the environmental issues related to biofuels if they are carefully calibrated and validated against field observations. Here we adapt the agro-terrestrial model ORCHIDEE-STICS for sugar cane simulations. Observation data of LAI are used to evaluate the sensitivity of the model to parameters of nitrogen absorption and phenology, which are calibrated in a systematic way for six sites in Australia and La Reunion. We find that the optimal set of parameters is highly dependent on the sites' characteristics and that the model can reproduce satisfactorily the evolution of LAI. This careful calibration of ORCHIDEE-STICS for sugar cane biomass production for different locations and technical itineraries provides a strong basis for further analysis of the impacts of bioenergy-related land use change on carbon cycle budgets. As a next step, a sensitivity analysis is carried out to estimate the uncertainty of the model in biomass and carbon flux simulation due to its parameterization.

  13. Acetic Acid Bacterial Biota of the Pink Sugar Cane Mealybug, Saccharococcus sacchari, and Its Environs

    PubMed Central

    Ashbolt, Nicholas J.; Inkerman, Peter A.

    1990-01-01

    Saccharococcus sacchari is the primary colonizer of the developing “sterile” tissue between the leaf sheath and stem of sugar cane. The honeydew secreted by the mealybugs is acidic (about pH 3) and supports an atypical epiphytic microbiota dominated by acetobacter-like bacteria and acidophilic yeast species. However, Erwinia and Leuconostoc species predominate within the leaf sheath pocket region when the mealybugs die out. The unidentified acetobacters were readily isolated from S. sacchari throughout its life cycle and from other genera of mealybugs on sugar cane and various other plants, both above and below ground. No other insect present on sugar cane was a significant vector of acetic acid bacteria. The major factors restricting microbial diversity within the environs of mealybugs were considered to be yeast activity along with bacterial production of acetic acid, ketogluconic acids, and gamma-pyrones, in association with their lowering of pH. The microbial products may aid in suppressing the attack by the parasitic mold Aspergillus parasiticus on mealybugs but could act as attractants for the predatory fruit fly Cacoxenus perspicax. PMID:16348144

  14. An improved chemically inducible gene switch that functions in the monocotyledonous plant sugar cane.

    PubMed

    Kinkema, Mark; Geijskes, R Jason; Shand, Kylie; Coleman, Heather D; De Lucca, Paulo C; Palupe, Anthony; Harrison, Mark D; Jepson, Ian; Dale, James L; Sainz, Manuel B

    2014-03-01

    Chemically inducible gene switches can provide precise control over gene expression, enabling more specific analyses of gene function and expanding the plant biotechnology toolkit beyond traditional constitutive expression systems. The alc gene expression system is one of the most promising chemically inducible gene switches in plants because of its potential in both fundamental research and commercial biotechnology applications. However, there are no published reports demonstrating that this versatile gene switch is functional in transgenic monocotyledonous plants, which include some of the most important agricultural crops. We found that the original alc gene switch was ineffective in the monocotyledonous plant sugar cane, and describe a modified alc system that is functional in this globally significant crop. A promoter consisting of tandem copies of the ethanol receptor inverted repeat binding site, in combination with a minimal promoter sequence, was sufficient to give enhanced sensitivity and significantly higher levels of ethanol inducible gene expression. A longer CaMV 35S minimal promoter than was used in the original alc gene switch also substantially improved ethanol inducibility. Treating the roots with ethanol effectively induced the modified alc system in sugar cane leaves and stem, while an aerial spray was relatively ineffective. The extension of this chemically inducible gene expression system to sugar cane opens the door to new opportunities for basic research and crop biotechnology. PMID:24142380

  15. Properties of aerosols from sugar-cane burning emissions in Southeastern Brazil

    NASA Astrophysics Data System (ADS)

    Lara, L. L.; Artaxo, P.; Martinelli, L. A.; Camargo, P. B.; Victoria, R. L.; Ferraz, E. S. B.

    The influences of biomass burning emissions in the composition of aerosol have been studied during 1 year around the city of Piracicaba (Southeastern Brazil). Inhalable particles, separated in PM 2.5 and coarse particulate mode (CPM, with size in the range (2.5< dp<10 ?m)), were sampled from April 1997 to March 1998 and analyzed for BC, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Se, Br, Rb, Sr, Zr, Pb. The average concentrations of PM 2.5, CPM, BC and chemical elements were statistically higher in the dry season than in the wet season. The results of absolute principal component analysis showed four and three different sources for PM 2.5 and CPM, respectively. Sugar-cane burning is the main source of PM 2.5 representing 60% of PM 2.5, soil dust accounted for 14%, and industries and oil combustion contributed with 12% each one. Resuspended soil is the main source of CPM followed by industrial emissions and sugar-cane burning. The sampling and analytical procedures applied in this study showed that sugar-cane burning and agricultural practices are the main sources of inhalable particles, possibly altering the aerosol composition around the city of Piracicaba.

  16. Electric power from sugar cane in Costa Rica. A technical and economic analysis

    SciTech Connect

    Tugwell, F.; Gowen, M.; Kenda, W.; Cohen, A.

    1988-07-01

    A team of specialists visited Costa Rica in May 1988 to analyze the potential for production and sale of electricity by the sugar-cane industry. Focusing on three sugar mills, the team made technical projections at four levels of investment, ranging from the simplest sale of surplus power to the installation of new turbogenerator systems. For each level, capital costs, electricity production and sales, and fuel options were estimated. Associated risks were assessed through sensitivity analyses to demonstrate the possible impacts of varying interest rates, fuel costs, and electricity sales prices. The team concluded that production and sale of electricity for the national grid could be an excellent investment opportunity for the sugar industry and would provide important economic benefits, including creation of additional jobs in rural areas, diversification of the sugar industry, and (in the short term) displacement of the need for imported fuels.

  17. 40 CFR 409.60 - Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw cane sugar...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...-Hamakua Coast of the Island of Hawaii raw cane sugar processing subcategory. 409.60 Section 409.60 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS SUGAR PROCESSING POINT SOURCE CATEGORY Hilo-Hamakua Coast of the Island of Hawaii Raw Cane Sugar...

  18. Okeelanta Cogeneration Project: Electricity and steam from sugar cane

    SciTech Connect

    Schaberg, D.

    1994-12-31

    The Okeelanta Cogeneration Project is a Bagasse- and wood chip-fired cogeneration project with a net electrical output of approximately 70MW, located at the Okeelanta Corporation`s sugar mill in South Bay, Florida. The Project is comprised of three stoker type boilers each capable of producing 440,000 lbs/hr of steam at 1455 psia, 955F, and a single extraction/condensing steam turbine with a gross output of 75 MW. The electrical output will be sold to Florida Power and Light under the terms of an executed power purchase agreement and delivered at 138kV.

  19. Power generation using sugar cane bagasse: A heat recovery analysis

    NASA Astrophysics Data System (ADS)

    Seguro, Jean Vittorio

    The sugar industry is facing the need to improve its performance by increasing efficiency and developing profitable by-products. An important possibility is the production of electrical power for sale. Co-generation has been practiced in the sugar industry for a long time in a very inefficient way with the main purpose of getting rid of the bagasse. The goal of this research was to develop a software tool that could be used to improve the way that bagasse is used to generate power. Special focus was given to the heat recovery components of the co-generation plant (economizer, air pre-heater and bagasse dryer) to determine if one, or a combination, of them led to a more efficient co-generation cycle. An extensive review of the state of the art of power generation in the sugar industry was conducted and is summarized in this dissertation. Based on this models were developed. After testing the models and comparing the results with the data collected from the literature, a software application that integrated all these models was developed to simulate the complete co-generation plant. Seven different cycles, three different pressures, and sixty-eight distributions of the flue gas through the heat recovery components can be simulated. The software includes an economic analysis tool that can help the designer determine the economic feasibility of different options. Results from running the simulation are presented that demonstrate its effectiveness in evaluating and comparing the different heat recovery components and power generation cycles. These results indicate that the economizer is the most beneficial option for heat recovery and that the use of waste heat in a bagasse dryer is the least desirable option. Quantitative comparisons of several possible cycle options with the widely-used traditional back-pressure turbine cycle are given. These indicate that a double extraction condensing cycle is best for co-generation purposes. Power generation gains between 40 and 100% are predicted for some cycles with the addition of optimum heat recovery systems.

  20. Sugar Cane Water Foot Print for Brazilian Major Varietes

    NASA Astrophysics Data System (ADS)

    Coelho, R. D.; Maschio, R.; Leal, D. P.; Barbosa, F. D.; Mauri, R.

    2012-12-01

    The purpose of this study was to evaluate the water productivity (PA) into biomass, sugar and energy for 24 brazilian sugarcane varieties under drip irrigation, subjected to full and deficit irrigation treatments during growing stage. Two experiments were established under greenhouse conditions at the Biosystems Engineering Department, ESALQ/USP, Piracicaba, SP. Experiment 1: ten varieties on a clay soil (RB835054, RB855453, RB855536, RB925211, RB867515, SP89-1115, SP81-3250, CTC14, CTC8 e CTC6) and Experiment 2: fourteen varieties on a sandy-loam soil (RB925345, RB855156, RB966928, RB72454, RB92579, IACSP95-5000, Caiana, SP83-2847, SP90-3414, SP79-1011, CTC17, CTC15, CTC9 e CTC2). In both experiments it was adopted two irrigation treatments: T100 - full irrigation with 100% crop evapotranspiration replacement, maintaining soil moisture near field capacity, and T70 - irrigation with 70% of water depth applied to T100 treatment. Irrigation treatments were initiated at 101 days of crop cycle, corresponding to the end of tillering and the beginning of intense stalk growth phase (first ratoon). It was observed variation in the water productivity into fresh stalk biomass (PABFC) from 16.22 to 29.21 kg m-3, according of the varieties and irrigation treatments applied. The highest values were observed for varieties CTC6, CTC14, RB867515, SP81-3250 and RB92579, under full irrigation treatment (T100), and CTC6, CTC14 and SP90-3414, under deficit irrigation treatment (T70). Water productivity into sugar (PABATR) ranged from 1.95 to 3.84 kg m-3, highest values were observed for varieties CTC6 and RB92579 (T100), as well as RB835054 e RB966928 (T70). Water productivity into total energy (PAETOT) varied from 101.17 to 174.65 MJ m-3, with highest values for varieties:SP81-3250, CTC6, CTC17 and RB92579 (T100 treatment), as well as SP90-3414, SP81-3250 and CTC6 (T70 treatment).

  1. Downstream processing for xylitol recovery from fermented sugar cane bagasse hydrolysate using aluminium polychloride.

    PubMed

    Silva, S S; Ramos, R M; Rodrigues, D C; Mancilha, I M

    2000-01-01

    Xylitol, a sweetener comparable to sucrose, is anticariogenic and can be consumed by diabetics. This sugar has been employed successfully in many foods and pharmaceutical products. The discovery of microorganisms capable of converting xylose present in lignocellulosic biomass into xylitol offers the opportunity of producing this poliol in a simple way. Xylitol production by biotechnological means using sugar cane bagasse is under study in our laboratories, and fermentation parameters have already been established. However, the downstream processing for xylitol recovery is still a bottleneck on which there is only a few data available in the literature. The present study deals with xylitol recovery from fermented sugar cane bagasse hydrolysate using 5.2 g/l of aluminium polychloride associated with activated charcoal. The experiments were performed at pH 9, 50 degrees C for 50 min. The results showed that aluminium polychloride and activated charcoal promoted a 93.5% reduction in phenolic compounds and a 9.7% loss of xylitol from the fermented medium, which became more discoloured, facilitating the xylitol separation. PMID:10739093

  2. Influence of sugar cane burning on aerosol soluble ion composition in Southeastern Brazil

    NASA Astrophysics Data System (ADS)

    Allen, A. G.; Cardoso, A. A.; da Rocha, G. O.

    2004-09-01

    Seasonal variability in the major soluble ion composition of atmospheric particulate matter in the principal sugar cane growing region of central São Paulo State indicates that pre-harvest burning of sugar cane plants is an important influence on the regional scale aerosol chemistry. Samples of particulate matter were collected between April 1999 and February 2001 in coarse (> 3.5 μm) and fine (< 3.5 μm) fractions, and analysed for HCOO-, CH3COO-, C2O42- , SO42-, NO3-, Cl-, Na+, K+, NH4+, Mg2+ and Ca2+. Results indicated that the principal sources of the aerosols investigated were local or regional in nature (scale of tens to a few hundreds of km), and that differences between air masses of varying origins were small. Fine particles were typically acidic, containing secondary nitrates, sulphates and organic species. Coarse fraction concentrations were mainly influenced by physical parameters (wind speed, movement of vehicles and surface condition) affecting rates of re-suspension, although secondary nitrate and sulphate were also present in the larger particles. Concentrations of all measured species except sodium and chloride were higher during the burning season. Although concentrations were lower than often found in polluted urban environments, the massive increases during much of the year, due to a single anthropogenic activity (sugar cane burning) are indicative of a very large perturbation of the lower troposphere in the region relative to the natural condition. These aerosols are suspected of promoting respiratory disease. They also represent an important mechanism for the tropospheric transport of species relevant to surface acidification (sulphates, nitrates, ammonium and organic acids) and soil nutrient status (potassium, nitrogen, ammonium, calcium), so their impact on fragile natural ecosystems (following deposition) needs to be considered.

  3. Control of Invertase Synthesis in Sugar Cane. Loci of Auxin and Glucose Effects

    PubMed Central

    Glasziou, K. T.; Waldron, J. C.; Bull, T. A.

    1966-01-01

    In tissue slices from rapidly expanding internodes of sugar cane the vacuolar invertase level is a function of the balance between synthesis and destruction. The enzyme is destroyed in the tissue at an approximately constant rate with a half time of 2 hours. Invertase synthesis is regulated by both auxin and glucose. From studies with inhibitors of protein and RNA synthesis we conclude that auxin alters the rate of synthesis and glucose increases the rate of destruction of messenger RNA required for the production of invertase. PMID:16656252

  4. Lengthening Versus Shortening Dark Periods and Blossoming in Sugar Cane as Affected by Temperature 12

    PubMed Central

    Clements, Harry F.

    1968-01-01

    Sugar cane, an intermediate day plant, clearly received a stronger stimulus to flower during lengthening nights than during shortening nights. Flowering was vigorous under warm, lengthening nights (21°) but less so under cool, lengthening nights (16-17°). Warm or cool shortening nights either failed to induce flowering altogether or reduced it substantially. Under the warmer nights the inductive dark period was 10 hours 57 minutes to 11 hours 26 minutes whether the nights were lengthening or shortening. Under cooler conditions, it was longer by from 20 minutes to nearly 2 hours. PMID:16656736

  5. 40 CFR 409.60 - Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw cane sugar...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...-Hamakua Coast of the Island of Hawaii raw cane sugar processing subcategory. 409.60 Section 409.60... PROCESSING POINT SOURCE CATEGORY Hilo-Hamakua Coast of the Island of Hawaii Raw Cane Sugar Processing Subcategory § 409.60 Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw...

  6. 40 CFR 409.60 - Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw cane sugar...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...-Hamakua Coast of the Island of Hawaii raw cane sugar processing subcategory. 409.60 Section 409.60... PROCESSING POINT SOURCE CATEGORY Hilo-Hamakua Coast of the Island of Hawaii Raw Cane Sugar Processing Subcategory § 409.60 Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw...

  7. 40 CFR 409.60 - Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw cane sugar...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...-Hamakua Coast of the Island of Hawaii raw cane sugar processing subcategory. 409.60 Section 409.60... PROCESSING POINT SOURCE CATEGORY Hilo-Hamakua Coast of the Island of Hawaii Raw Cane Sugar Processing Subcategory § 409.60 Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw...

  8. 40 CFR 409.60 - Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw cane sugar...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...-Hamakua Coast of the Island of Hawaii raw cane sugar processing subcategory. 409.60 Section 409.60... PROCESSING POINT SOURCE CATEGORY Hilo-Hamakua Coast of the Island of Hawaii Raw Cane Sugar Processing Subcategory § 409.60 Applicability; description of the Hilo-Hamakua Coast of the Island of Hawaii raw...

  9. IMPROVED BIOREFINERY FOR THE PRODUCTION OF ETHANOL, CHEMICALS, ANIMAL FEED AND BIOMATERIALS FROM SUGAR CANE

    SciTech Connect

    Dr. Donal F. Day

    2009-01-29

    The Audubon Sugar Institute (ASI) of Louisiana State University’s Agricultural Center (LSU AgCenter) and MBI International (MBI) sought to develop technologies that will lead to the development of a sugar-cane biorefinery, capable of supplying fuel ethanol from bagasse. Technology development focused on the conversion of bagasse, cane-leaf matter (CLM) and molasses into high value-added products that included ethanol, specialty chemicals, biomaterials and animal feed; i.e. a sugar cane-based biorefinery. The key to lignocellulosic biomass utilization is an economically feasible method (pretreatment) for separating the cellulose and the hemicellulose from the physical protection provided by lignin. An effective pretreatment disrupts physical barriers, cellulose crystallinity, and the association of lignin and hemicellulose with cellulose so that hydrolytic enzymes can access the biomass macrostructure (Teymouri et al. 2004, Laureano-Perez, 2005). We chose to focus on alkaline pretreatment methods for, and in particular, the Ammonia Fiber Expansion (AFEX) process owned by MBI. During the first two years of this program a laboratory process was established for the pretreatment of bagasse and CLM using the AFEX process. There was significant improvement of both rate and yield of glucose and xylose upon enzymatic hydrolysis of AFEX-treated bagasse and CLM compared with untreated material. Because of reactor size limitation, several other alkaline pretreatment methods were also co-investigated. They included, dilute ammonia, lime and hydroxy-hypochlorite treatments. Scale-up focused on using a dilute ammonia process as a substitute for AFEX, allowing development at a larger scale. The pretreatment of bagasse by an ammonia process, followed by saccharification and fermentation produced ethanol from bagasse. Simultaneous saccharification and fermentation (SSF) allowed two operations in the same vessel. The addition of sugarcane molasses to the hydrolysate/fermentation process yielded improvements beyond what was expected solely from the addition of sugar. In order to expand the economic potential for building a biorefinery, the conversion of enzyme hydrolysates of AFEX-treated bagasse to succinic acid was also investigated. This program established a solid basis for pre-treatment of bagasse in a manner that is feasible for producing ethanol at raw sugar mills.

  10. Calcium phosphate flocs and the clarification of sugar cane juice from whole of crop harvesting.

    PubMed

    Thai, Caroline C D; Moghaddam, Lalehvash; Doherty, William O S

    2015-02-11

    Sugar cane biomass is one of the most viable feedstocks for the production of renewable fuels and chemicals. Therefore, processing the whole of crop (WC) (i.e., stalk and trash, instead of stalk only) will increase the amount of available biomass for this purpose. However, effective clarification of juice expressed from WC for raw sugar manufacture is a major challenge because of the amounts and types of non-sucrose impurities (e.g., polysaccharides, inorganics, proteins, etc.) present. Calcium phosphate flocs are important during sugar cane juice clarification because they are responsible for the removal of impurities. Therefore, to gain a better understanding of the role of calcium phosphate flocs during the juice clarification process, the effects of impurities on the physicochemical properties of calcium phosphate flocs were examined using small-angle laser light scattering technique, attenuated total reflectance Fourier transformed infrared spectroscopy, and X-ray powder diffraction. Results on synthetic sugar juice solutions showed that the presence of SiO2 and Na(+) ions affected floc size and floc structure. Starch and phosphate ions did not affect the floc structure; however, the former reduced the floc size, whereas the latter increased the floc size. The study revealed that high levels of Na(+) ions would negatively affect the clarification process the most, as they would reduce the amount of suspended particles trapped by the flocs. A complementary study on prepared WC juice using cold and cold/intermediate liming techniques was conducted. The study demonstrated that, in comparison to the one-stage (i.e., conventional) clarification process, a two-stage clarification process using cold liming removed more polysaccharides (≤19%), proteins (≤82%), phosphorus (≤53%), and SiO2 (≤23%) in WC juice but increased Ca(2+) (≤136%) and sulfur (≤200%). PMID:25574835

  11. Sugar cane vinasse in water bodies: impact assessed by liver histopathology in tilapia.

    PubMed

    Marinho, Júlia Fernanda Urbano; Correia, Jorge Evangelista; Marcato, Ana Claudia de Castro; Pedro-Escher, Janaína; Fontanetti, Carmem Silvia

    2014-12-01

    Aquatic ecosystems are the main receptors of toxic substances from human activities. With the increase in sugar cane production, vinasse - the main residue of ethanol production - is a potential contaminant of water resources, due to its high organic matter content. This study was aimed at evaluating the toxicity of vinasse by examining the liver of the fish Oreochromis niloticus exposed to different dilutions of sugar cane vinasse (1%, 2%, 5%, 5% and 10%) in laboratory bioassays. Portions of liver were collected and fixed for histological and histochemical techniques to detect total proteins, polysaccharides and lipids. In the histological analysis, the groups treated with vinasse exhibited significant alterations, such as loss of cytoplasmic integrity, loss of cell limit and tissue disorganization. Protein and lipid profiles were not altered. Higher accumulation of polysaccharides was detected in fish exposed to lower concentrations of vinasse, with a gradual decrease in animals treated with vinasse in higher concentrations. We concluded that vinasse has a dose-dependent toxic and cytotoxic potential in water bodies and that the liver is strongly affected when acutely exposed to this contaminant. PMID:25265025

  12. Rudimentary, low tech incinerators as a means to produce reactive pozzolan out of sugar cane straw

    SciTech Connect

    Martirena, Fernando . E-mail: f.martirena@enet.cu; Middendorf, Bernhard; Day, Robert L.; Gehrke, Matthias; Roque, Pablo; Martinez, Lesday; Betancourt, Sergio

    2006-06-15

    The ashes of agricultural wastes from the processing of sugar cane are recognized as having pozzolanic properties. Burning of these wastes under controlled conditions, e.g. temperature and residence time results in significant improvement in reactivity. There are many reports of low-tech incinerators that have been successfully used to produce reactive rice husk ash in Asia. The paper presents the results of the evaluation of a rudimentary incinerator where sugar cane straw is burnt in order to obtain a reactive ash. The incinerator is designed and constructed according to state-of-the-art recommendations for this kind of device. Various burning trials were performed in order to obtain ash for the experiment. X-ray diffraction analysis performed on powdered ash shows significant presence of amorphous (glassy) material. Lime-pozzolana pastes were prepared. The pastes were subjected to X-ray diffraction, thermo-gravimetric analysis, chemical titration, and SEM observation, as a means to examine the pozzolanicity of the ash via the progress with time of calcium hydroxide consumption, and changes in the pore size distribution and strength. Calcium silicate hydrate phases are the main reaction product of the pozzolanic reaction. The long residence time of the ash in the burning chamber seems to be the reason for the fairly low reactivity of the ash; the reactivity of the ash was not significantly improved in comparison with that of the ash burnt in uncontrolled conditions in the open air.

  13. Upgrading of sugar cane bagasse by thermal processes. 9: Catalytic liquefaction in ethanol

    SciTech Connect

    Lancas, F.M.; Rezemini, A.L.; Donate, P.M.

    1999-05-01

    This article presents the results of a study on the process of direct catalytic liquefaction of sugar cane bagasse, using ethanol as solvent. A systematic study with 12 different types of commercially available catalysts was accomplished. For each catalyst, the conversion yield of sugar cane bagasse into liquefied products, which are useful as liquid fuels and chemical feedstocks, was determined. The highest conversion yield was observed when a nickel catalyst on SiO{sub 2}-Al{sub 2}O{sub 3} was used. The liquefied products were fractionated into oils, asphaltenes, and asphaltols. The oil samples were separated and then fractionated into eight different chemical classes by preparative liquid chromatography. The highest proportion of light-oils (F1 to F5) was obtained with the potassium fluoride catalyst on silica gel. High proportions of resins (F6) were obtained with three types of catalysts: nickel on SiO{sub 2}-Al{sub 2}O{sub 3}, ruthenium, or platinum on activated carbon powder. The highest proportion of asphaltenes (F7) and of asphaltols (F8) were obtained with the niobium oxide catalyst.

  14. Upgrading of sugar cane bagasse by thermal processes. 10: Catalytic liquefaction in aqueous medium

    SciTech Connect

    Lancas, F.M.; Ruggiero, M.A.; Donate, P.M.

    1999-05-01

    This work presents the results of a study of a process of direct catalytic liquefaction of sugar cane bagasse, in aqueous medium, using different pH values. The experiments were conducted in the absence as well as in the presence of commercial catalysts. In the absence of catalyst, the results showed that the conversion of sugar cane bagasse into liquefied products is not influenced by the pH of the reaction mixture. An increase in the temperature augments the yield of liquefied products. The utilization of different commercial catalysts permits an increase in the yields of liquefied products up to 92.4%, obtained with 10% palladium on activated carbon powder as catalyst. The liquefied products were fractionated into eight different chemical classes by preparative liquid chromatography (PLC-8 method). In the absence of catalyst, high conversion yields into light-oils and resins (fractions F1 to F6) was observed only at pH = 9. When the catalysts were used (at pH = 9 and at 370 C), an important increase (from 29 to 78%) of resins (fraction F6) was observed. Under this condition, the proportion of asphaltenes and asphaltols (fractions F7 and F8) decreases from 70 to 20%.

  15. Nitrous Oxide and Methane Fluxes Following Ammonium Sulfate and Vinasse Application on Sugar Cane Soil.

    PubMed

    Paredes, Debora da S; Alves, Bruno J R; dos Santos, Marco A; Bolonhezi, Denizart; Sant'Anna, Selenobaldo A C; Urquiaga, Segundo; Lima, Magda A; Boddey, Robert M

    2015-09-15

    This study aimed to quantify nitrous oxide (N2O) and methane (CH4) emission/sink response from sugar cane soil treated with fertilizer nitrogen (N) and vinasse applied separately or in sequence, the latter being investigated with regard to the time interval between applications for a possible effect on emissions. The study was carried out in a traditional area of unburned sugar cane in São Paulo state, Brazil. Two levels of N fertilization (0 and 100 kg N ha(-1)) with no added vinasse and combined with vinasse additions at different times (100 m(-3) ha(-1) at 3 and 15 days after N fertilization) were evaluated. Methane and N2O fluxes were monitored for 211 days. On average, the soil was a sink for CH4, which was not affected by the treatments. Emissions of N2O were induced by N fertilizer and vinasse applications. For ammonium sulfate, 0.6% of the added N was emitted as N2O, while for vinasse, this ranged from 1.0 to 2.2%. Changes in N2O fluxes were detected the day after application of vinasse on the N fertilized areas, but although the emission factor (EF) was 34% greater, the EF was not significantly different from fertilizer N alone. Nevertheless, we recommend to not apply vinasse after N fertilization to avoid boosting N2O emissions. PMID:26295867

  16. Hydrolysis of Ammonia-pretreated Sugar Cane Bagasse with Cellulase, β-Glucosidase, and Hemicellulase Preparations

    NASA Astrophysics Data System (ADS)

    Prior, Bernard A.; Day, Donal F.

    Sugar cane bagasse consists of hemicellulose (24%) and cellulose (38%), and bioconversion of both fractions to ethanol should be considered for a viable process. We have evaluated the hydrolysis of pretreated bagasse with combinations of cellulase, β-glucosidase, and hemicellulase. Ground bagasse was pretreated either by the AFEX process (2NH3: 1 biomass, 100 °C, 30 min) or with NH4OH (0.5 g NH4OH of a 28% [v/v] per gram dry biomass; 160 °C, 60 min), and composition analysis showed that the glucan and xylan fractions remained largely intact. The enzyme activities of four commercial xylanase preparations and supernatants of four laboratory-grown fungi were determined and evaluated for their ability to boost xylan hydrolysis when added to cellulase and β-glucosidase (10 filter paper units [FPU]: 20 cellobiase units [CBU]/g glucan). At 1% glucan loading, the commercial enzyme preparations (added at 10% or 50% levels of total protein in the enzyme preparations) boosted xylan and glucan hydrolysis in both pretreated bagasse samples. Xylanase addition at 10% protein level also improved hydrolysis of xylan and glucan fractions up to 10% glucan loading (28% solids loading). Significant xylanase activity in enzyme cocktails appears to be required for improving hydrolysis of both glucan and xylan fractions of ammonia pretreated sugar cane bagasse.

  17. Long-term prospects for the environmental profile of advanced sugar cane ethanol.

    PubMed

    da Silva, Cinthia R U; Franco, Henrique Coutinho Junqueira; Junqueira, Tassia Lopes; van Oers, Lauran; van der Voet, Ester; Seabra, Joaquim E A

    2014-10-21

    This work assessed the environmental impacts of the production and use of 1 MJ of hydrous ethanol (E100) in Brazil in prospective scenarios (2020-2030), considering the deployment of technologies currently under development and better agricultural practices. The life cycle assessment technique was employed using the CML method for the life cycle impact assessment and the Monte Carlo method for the uncertainty analysis. Abiotic depletion, global warming, human toxicity, ecotoxicity, photochemical oxidation, acidification, and eutrophication were the environmental impacts categories analyzed. Results indicate that the proposed improvements (especially no-til farming-scenarios s2 and s4) would lead to environmental benefits in prospective scenarios compared to the current ethanol production (scenario s0). Combined first and second generation ethanol production (scenarios s3 and s4) would require less agricultural land but would not perform better than the projected first generation ethanol, although the uncertainties are relatively high. The best use of 1 ha of sugar cane was also assessed, considering the displacement of the conventional products by ethanol and electricity. No-til practices combined with the production of first generation ethanol and electricity (scenario s2) would lead to the largest mitigation effects for global warming and abiotic depletion. For the remaining categories, emissions would not be mitigated with the utilization of the sugar cane products. However, this conclusion is sensitive to the displaced electricity sources. PMID:25275890

  18. Ethanol/Water Pulps From Sugar Cane Straw and Their Biobleaching With Xylanase from Bacillus pumilus

    NASA Astrophysics Data System (ADS)

    Moriya, Regina Y.; Gonçalves, Adilson R.; Duarte, Marta C. T.

    The influence of independent variables (temperature and time) on the cooking of sugar cane straw with ethanol/water mixtures was studied to determine operating conditions that obtain pulp with high cellulose contents and a low lignin content. An experimental 22 design was applied for temperatures of 185 and 215°C, and time of 1 and 2.5 h with the ethanol/water mixture concentration and constant straw-to-solvent ratio. The system was scaled-up at 200°C cooking temperature for 2 h with 50% ethanol-water concentration, and 1?10 (w/v) straw-to-solvent ratio to obtain a pulp with 3.14 cP viscosity, 58.09 kappa-number, and the chemical composition of the pulps were 3.2% pentosan and 31.5% lignin. Xylanase from Bacillus pumilus was then applied at a loading of 5-150 IU/g dry pulp in the sugar cane straw ethanol/water pulp at 50°C for 2 and 20 h. To ethanol/water pulps, the best enzyme dosage was found to be 20 IU/g dry pulp at 20 h, and a high enzyme dosage of 150 IU/g dry pulp did not decrease the kappa-number of the pulp.

  19. Comparative respiratory toxicity of particles produced by traffic and sugar cane burning.

    PubMed

    Mazzoli-Rocha, Flavia; Magalhães, Clarissa Bichara; Malm, Olaf; Saldiva, Paulo Hilário Nascimento; Zin, Walter Araujo; Faffe, Débora Souza

    2008-09-01

    The impact of particle emissions by biomass burning is increasing throughout the world. We explored the toxicity of particulate matter produced by sugar cane burning and compared these effects with equivalent mass of traffic-derived particles. For this purpose, BALB/c mice received a single intranasal instillation of either distilled water (C) or total suspended particles (15 microg) from an urban area (SP group) or biomass burning-derived particles (Bio group). Lung mechanical parameters (total, resistive and viscoelastic pressures, static elastance, and elastic component of viscoelasticity) and histology were analyzed 24h after instillation. Trace elements and polycyclic aromatic hydrocarbons (PAHs) metabolites of the two sources of particles were determined. All mechanical parameters increased similarly in both pollution groups compared with control, except airway resistive pressure, which increased only in Bio. Both exposed groups showed significantly higher fraction area of alveolar collapse, and influx of polymorphonuclear cells in lung parenchyma than C. The composition analysis of total suspended particles showed higher concentrations of PAHs and lower concentration of metals in traffic than in biomass burning-derived particles. In conclusion, we demonstrated that a single low dose of ambient particles, produced by traffic and sugar cane burning, induced significant alterations in pulmonary mechanics and lung histology in mice. Parenchymal changes were similar after exposure to both particle sources, whereas airway mechanics was more affected by biomass-derived particles. Our results indicate that biomass particles were at least as toxic as those produced by traffic. PMID:18606401

  20. Assessment of the effects of sugar cane plantation burning on daily counts of inhalation therapy.

    PubMed

    Arbex, M A; Böhm, G M; Saldiva, P H; Conceição, G M; Pope, A C; Braga, A L

    2000-10-01

    This study was designed to evaluate the association between sugar cane plantation burning and hospital visits in Araraquara in the state of São Paulo, Brazil. From June 1 to August 31, 1995, the daily number of visits of patients who needed inhalation therapy in one of the main hospitals of the city was recorded and used as health impairment estimation. Sedimentation of particle mass (the amount of particles deposited on four containers filled with water) was measured daily. The association between the weight of the sediment and the number of visits was evaluated by means of Poisson regression models controlled for seasonality, temperature, day of the week, and rain. We found a significant and dose-dependent relationship between the number of visits and the amount of sediment. The relative risk of visit associated with an increase of 10 mg in the sediment weight was 1.09 (1-1.19), and the relative risk of an inhalation therapy was 1.20 (1.03-1.39) on the most polluted days (fourth quartile of sediment mass). These results indicate that sugar cane burning may cause deleterious health effects in the exposed population. PMID:11288302

  1. Study of Sugar Cane Management Systems in Brazil Using Laser Induced Fluorescence

    NASA Astrophysics Data System (ADS)

    Cabral, Jader; Villas-Boas, Paulino; Carvalho, Camila; Corá, José Eduardo; Milori, Débora

    2014-05-01

    Brazil is the largest producer of cane sugar, consequently, is a leader in the production of bio-ethanol, a clean and renewable energy that fits the model of sustainable economy as discussed and pursued by our society. Our state of São Paulo concentrates 60% of national production, representing a sizeable share in the range of world production. All this economic potential is closely monitored by the scientific community, which develops numerous studies seeking an improvement in production efficiency and reduced environmental impacts caused by the planting. However, the study of soil samples, in plantation areas, demands results about the content and structural forms of organic matter (OM). Also, the soil carbon stocks depend on the type of management. Our goal is to study OM of soil samples from four sugar cane management systems: (i) unburned cane harvest, (ii) preharvest burned, (iii) addition of sugarcane bagasse ash and (iv) addition of residue from the extraction of sucrose, using Laser Induced Fluorescence Spectroscopy of solid state. All the emission spectra were acquired using the system called LIFS-405, which consists of a diode laser Coherent, model cube with excitation at 405 nm, maximum output power of 50mJ and a mini-spectrometer, Ocean Optics USB2000-high sensitivity, with range of 194-894 nm and a fiber-optic bundle design (six excitation fibers in a circular path and one central fiber the collect the fluorescence). In this work, we will present the preliminary results evolving the humification index (HLIFS) of soil OM and total carbon amount (TC) for the different types of management. HLIFS shows a close correlation with the humification index of humic acid in solution obtained by means 2D conventional fluorescence spectroscopy.

  2. Volatilisation of alkali and alkaline earth metallic species during the pyrolysis of biomass: differences between sugar cane bagasse and cane trash.

    PubMed

    Keown, Daniel M; Favas, George; Hayashi, Jun-ichiro; Li, Chun-Zhu

    2005-09-01

    Sugar cane bagasse and cane trash were pyrolysed in a novel quartz fluidised-bed/fixed-bed reactor. Quantification of the Na, K, Mg and Ca in chars revealed that pyrolysis temperature, heating rate, valence and biomass type were important factors influencing the volatilisation of these alkali and alkaline earth metallic (AAEM) species. Pyrolysis at a slow heating rate (approximately 10 K min(-1)) led to minimal (often <20%) volatilisation of AAEM species from these biomass samples. Fast heating rates (>1000 K s(-1)), encouraging volatile-char interactions with the current reactor configuration, resulted in the volatilisation of around 80% of Na, K, Mg and Ca from bagasse during pyrolysis at 900 degrees C. Similar behaviour was observed for monovalent Na and K with cane trash, but the volatilisation of Mg and Ca from cane trash was always restricted. The difference in Cl content between bagasse and cane trash was not sufficient to fully explain the difference in the volatilisation of Mg and Ca. PMID:15978989

  3. Application of the OCRA Method in the sugar cane harvest and its repercussion on the workers' health. Preliminary study.

    PubMed

    Ruddy, Facci; Eduardo, Marcatto; Edoardo, Santino

    2012-01-01

    In Brazil the sugar ethanol industry has had strong growth in the last 10 years, sometimes due to the growing sugar exportation, sometimes due to the alcohol production for automobile fuel and for exportation. Despite the growing mechanization of the raw material harvest (sugar cane), the manual work still persists. The development of this article was based in the application of the OCRA Method in the sugar cane harvesting process, to evaluate the risks to the upper limbs by repetitive movements and epidemiologically prove the ratio risk x harm to the heath of the workers, as well as the probability of developing improvements in the working conditions. The analysis process consists of studying the work organization, the risks to the health of the worker and the distribution of the recovery periods during the working day. PMID:22317331

  4. Bioaccessible arsenic in soils of former sugar cane plantations, Island of Hawaii.

    PubMed

    Cutler, William G; Brewer, Roger C; El-Kadi, Aly; Hue, Nguyen V; Niemeyer, Patrick G; Peard, John; Ray, Chittaranjan

    2013-01-01

    Arsenical herbicides were used extensively for emergent weed control in Hawaiian sugar cane cultivation from 1913 to about 1950. As a result, surface soil arsenic concentrations average 280 mg kg(-1) across more than 60 km(2) of former sugar plantation land in the eastern portion of the Island of Hawaii. This study was conducted to elucidate the relationship between soil properties and arsenic bioaccessibility in the iron-rich volcanic soils. Soils are predominantly Andisols, formed by weathering of basaltic lava and tephra, with pedogenic solid phases consisting of short-range order iron oxyhydroxides, allophane-like aluminosilicates, and metal-humus compounds. These reactive solid phases strongly adsorb oxyanions, such as phosphate and arsenite/arsenate. High arsenic sorption capacity limits desorption and vertical migration within the soil column and prevents contamination of the underlying groundwater aquifer, despite high arsenic loading and precipitation rates. In vitro arsenic bioaccessibility, as measured by the SBRC gastric-phase test, ranges from 2% to 35% and averages 9% of total arsenic. Bioaccessible arsenic is higher in less weathered soils (Udifolists, Typic and Lithic Hydrudands) and lower in more weathered ash-dominant soils (Acrudoxic Hydrudands). Soil weathering indicators, such as reactive iron content, are strong predictors of arsenic bioaccessibility. Based on evidence from soil mineralogy, geochemistry and arsenic speciation, as well as limited soil arsenic bioavailability/bioaccessibility comparisons, risks to human health from direct contact (soil ingestion) are significantly reduced by low arsenic bioaccessibility. Nonetheless, some soils within former sugar cane cultivation areas contain bioaccessible arsenic concentrations exceeding Hawaii Department of Health risk-based action levels, and will require mitigating actions. Even higher levels of soil arsenic contamination have been identified at former pesticide storage and mixing areas, but are generally of localized extent. PMID:23178778

  5. 75 FR 26316 - Allocation of Additional Fiscal Year (FY) 2010 In-Quota Volume for Raw Cane Sugar

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-11

    ... United States Trade Representative under Presidential Proclamation 6763 (60 FR 1007). On April 23, 2010... additional fiscal year (FY) 2010 in-quota quantity of the tariff-rate quota (TRQ) for imported raw cane sugar... 5 to chapter 17 of the Harmonized Tariff Schedule of the United States (HTS), the United...

  6. Habitat selection and coexistence of invasive cockroach species (Dictyoptera) in sugar-cane fields on Réunion island

    NASA Astrophysics Data System (ADS)

    Boyer, Stéphane; Rivault, Colette

    2006-01-01

    Selection of habitat has a profound influence on interactions among species and the assembly of ecological communities. We investigated habitat preferences to understand how different cockroach species coexist in sugar-cane fields on Réunion island. Cockroach populations belonging to a guild of seven species were surveyed during one annual cycle in eight sugar-cane fields that differed by several environmental factors, in order to investigate ecological features of cockroach species and their patterns of coexistence. Structure variations of the cockroach communities were analyzed at the field scale, at the sample unit scale, and according to variations of environmental conditions related to the annual sugar-cane growth cycle. A canonical correspondence analysis (CCA) was used to elucidate relationships between species diversity, population abundance and environmental characteristics. The examination of partitioning at different spatial and temporal scales evidenced that each species occupied a particular type of habitat. The main factors influencing spatial habitat selection were at the sample unit scale: presence of ants, edge effect, soil moisture and granulometry, at the field scale: irrigation, annual rainfall, altitude and age of the field. Although a pair of species shared the same type of habitat, annual population peaks of each species did not coincide in time. This suggests that resource partitioning is based both on ecological factors and interspecific competition. Factors enhancing cockroach coexistence and factors favoring population outbursts are discussed as well as specific invasive capacities of these cockroaches and the role of the cockroach community in the sugar-cane trophic web.

  7. Including sugar cane in the agro-ecosystem model ORCHIDEE-STICS

    NASA Astrophysics Data System (ADS)

    Valade, A.; Vuichard, N.; Ciais, P.; Viovy, N.

    2010-12-01

    With 4 million ha currently grown for ethanol in Brazil only, approximately half the global bioethanol production in 2005 (Smeets 2008), and a devoted land area expected to expand globally in the years to come, sugar cane is at the heart of the biofuel debate. Indeed, ethanol made from biomass is currently the most widespread option for alternative transportation fuels. It was originally promoted as a carbon neutral energy resource that could bring energy independence to countries and local opportunities to farmers, until attention was drawn to its environmental and socio-economical drawbacks. It is still not clear to which extent it is a solution or a contributor to climate change mitigation. Dynamic Global Vegetation models can help address these issues and quantify the potential impacts of biofuels on ecosystems at scales ranging from on-site to global. The global agro-ecosystem model ORCHIDEE describes water, carbon and energy exchanges at the soil-atmosphere interface for a limited number of natural and agricultural vegetation types. In order to integrate agricultural management to the simulations and to capture more accurately the specificity of crops' phenology, ORCHIDEE has been coupled with the agronomical model STICS. The resulting crop-oriented vegetation model ORCHIDEE-STICS has been used so far to simulate temperate crops such as wheat, corn and soybean. As a generic ecosystem model, each grid cell can include several vegetation types with their own phenology and management practices, making it suitable to spatial simulations. Here, ORCHIDEE-STICS is altered to include sugar cane as a new agricultural Plant functional Type, implemented and parametrized using the STICS approach. An on-site calibration and validation is then performed based on biomass and flux chamber measurements in several sites in Australia and variables such as LAI, dry weight, heat fluxes and respiration are used to evaluate the ability of the model to simulate the specific phenology of sugar cane. The calibration of ORCHIDEE-STICS on several sites and for different technical itineraries provides a strong basis for further analysis of the impacts of land use change related to bioenergy crops.

  8. Contribution of sugar-cane harvesting season to atmospheric contamination by polycyclic aromatic hydrocarbons (PAHs) in Araraquara city, Southeast Brazil

    NASA Astrophysics Data System (ADS)

    de Andrade, Sandro José; Cristale, Joyce; Silva, Flávio Soares; Julião Zocolo, Guilherme; Marchi, Mary R. R.

    2010-08-01

    In Brazil, sugar-cane crops are burned to facilitate harvesting, and this causes environmental pollution from the large amounts of smoke and soot that are released into the atmosphere. The smoke and soot contain numerous organic compounds such as PAHs. In this study, PM 10 and PAH concentrations in the air of Araraquara (SE Brazil, with around 200,000 inhabitants and surrounded by sugar-cane plantations) were determined during the harvest and non-harvest seasons. The sampling strategy included two campaigns in each season, with 20 samples per season. PM 10 was collected using a Hi-vol sampler with Teflon™ - coated glass fiber filters. PM 10 ranged from 41 to 181 μg m -3 during the harvest season, and from 12 to 47 μg m -3 during the non-harvest season. The mean total concentration of PAHs was 2.5 ng m -3 (non-harvest season) and 11.6 ng m -3 (harvest season). In all sampling periods, the most abundant polycyclic aromatic hydrocarbons were phenanthrene and fluoranthrene, and the least abundant was anthracene. The cluster analysis of the total PAH concentrations for each day of sampling and the corresponding meteorological data suggested that the atmospheric concentration of PAHs was independent of the differences in the weather between the seasons. For both sampling seasons, the statistical treatment (PCA, Varimax rotation and HCA) indicated the presence of vehicle sources (diesel, gasoline, and natural-gas engines); but for the harvest season, the main source was attributed to sugar-cane burning. The data generated by this study indicated the burning of sugar-cane as the main contributor to the high levels of PAHs detected in samples during the sugar-cane harvest season.

  9. Distribution of prokaryotic organisms in a tropical estuary influenced by sugar cane agriculture in northeast Brazil

    PubMed Central

    Wolf, Lars; Schwalger, Berit; Knoppers, Bastiaan A.; da Silva, Luiz Antonio Ferreira; Medeiros, Paulo Ricardo Petter; Pollehne, Falk

    2010-01-01

    In a joint Brazilian-German case study, distribution patterns of microorganisms were compared with environmental variables in the tropical coastal Manguaba lagoon in northeast Brazil, which is situated downstream of several sugar cane processing plants . 16S rDNA and 16S rRNA single strand conformation polymorphism (SSCP) gene fingerprinting were used to follow the composition and distribution of microorganisms throughout the salinity gradient of the lagoon. Potentially abundant microorganisms were identified by sequencing representative SSCP bands. It could be demonstrated that the distribution of microbes was in close relation to the physico-chemical environmental settings and followed a common scheme. In the in- and outlet areas of the lagoon rather transient microbial communities were found, whereas in the central part a stable, diverse community was encountered, that due to the long residence time of the water, had ample time for development and adaptation. PMID:24031568

  10. Pyrolysis of sugar cane bagasse in a wire-mesh reactor

    SciTech Connect

    Drummond, A.R.F.; Drummond, I.W.

    1996-04-01

    Improved experimental techniques are described, using a wire mesh reactor; for determining the pyrolysis yields of lignocellulosic materials. In this apparatus pyrolysis tars are rapidly swept from the hot zone of the reactor and quenched, secondary reactions are thereby greatly diminished. Particular emphasis is placed upon the measurement of the pyrolysis yields for sugar cane bagasse, an abundant agricultural waste product. The role of the important pyrolysis parameters, peak temperature and heating rate, in defining the ultimate tar yield is investigated, with the value for bagasse being 54.6% at 500 C and 1,000 C/s. The pyrolysis yields, under similar conditions, of another biomass material, silver birch, are also reported and compared to those of bagasse.

  11. Experimental variables effects on the direct liquefaction of lignin sugar cane bagasse

    SciTech Connect

    Celeghini, R.M.S.; Lancas, F.M.

    1998-08-01

    Sugar cane bagasse lignin was submitted to a liquefaction process with the aim of obtaining light oils. In order to increase the yields of light oils a study of the influence of experimental variables in the liquefaction process was performed. A 2{sup 4} factorial design was used, involving two levels and four variables: temperature, pressure, solute/solvent ratio, and time. It was observed that the variables time, temperature, and solute/solvent ratio influenced an increase in yield, and the variable solute/solvent ratio was independent, while the second-order effect among t {times} T, t {times} P was observed, and third-order among T {times} t {times} P occurs.

  12. Pattern recognition applied to mineral characterization of Brazilian coffees and sugar-cane spirits

    NASA Astrophysics Data System (ADS)

    Fernandes, Andréa P.; Santos, Mirian C.; Lemos, Sherlan G.; Ferreira, Márcia M. C.; Nogueira, Ana Rita A.; Nóbrega, Joaquim A.

    2005-06-01

    Aluminium, Ca, Cu, Fe, K, Mg, Mn, Na, Pb, S, Se, Si, Sn, Sr, and Zn were determined in coffee and sugar-cane spirit (cachaça) samples by axial viewing inductively coupled plasma optical emission spectrometry (ICP OES). Pattern recognition techniques such as principal component analysis and cluster analysis were applied to data sets in order to characterize samples with relation to their geographical origin and production mode (industrial or homemade and organically or conventionally produced). Attempts to correlate metal ion content with the geographical origin of coffee and the production mode (organic or conventional) of cachaça were not successful. Some differentiation was suggested for the geographical origin of cachaça of three regions (Northeast, Central, and South), and for coffee samples, related to the production mode. Clear separations were only obtained for differentiation between industrial and homemade cachaças, and between instant soluble and roasted coffees.

  13. Genetic diversity analysis with RAPD linked to sex identification in the sugar cane borer Diatraea saccharalis.

    PubMed

    Heideman, C; Munhoz, R E F; Pattaro Júnior, J R; Fernandez, M A

    2010-01-01

    Diatraea saccharalis is an insect that causes considerable losses in the sugar cane crop. Our aim was to contribute to the knowledge of the biology of D. saccharalis, with the report of DNA fragments involved in the differentiation between the male and female of this species using the RAPD sex molecular marker GyakuU-13, which is specific for the W chromosome of Bombyx mori. Another point evaluated in this study was the genetic diversity of a D. saccharalis population maintained by inbreeding in a laboratory culture. The profile of sex-specific fragments was analyzed, and the genetic variability of this population was estimated. An analysis of the molecular markers showed only one fragment, of approximately 700 bp, that could be considered as a female sex marker in D. saccharalis. PMID:21128215

  14. Decomposition of lignin from sugar cane bagasse during ozonation process monitored by optical and mass spectrometries.

    PubMed

    Souza-Corrêa, J A; Ridenti, M A; Oliveira, C; Araújo, S R; Amorim, J

    2013-03-21

    Mass spectrometry was used to monitor neutral chemical species from sugar cane bagasse that could volatilize during the bagasse ozonation process. Lignin fragments and some radicals liberated by direct ozone reaction with the biomass structure were detected. Ozone density was monitored during the ozonation by optical absorption spectroscopy. The optical results indicated that the ozone interaction with the bagasse material was better for bagasse particle sizes less than or equal to 0.5 mm. Both techniques have shown that the best condition for the ozone diffusion in the bagasse was at 50% of its moisture content. In addition, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were employed to analyze the lignin bond disruptions and morphology changes of the bagasse surface that occurred due to the ozonolysis reactions as well. Appropriate chemical characterization of the lignin content in bagasse before and after its ozonation was also carried out. PMID:23441875

  15. A novel alkaline oxidation pretreatment for spruce, birch and sugar cane bagasse.

    PubMed

    Kallioinen, Anne; Hakola, Maija; Riekkola, Tiina; Repo, Timo; Leskelä, Markku; von Weymarn, Niklas; Siika-aho, Matti

    2013-07-01

    Alkaline oxidation pretreatment was developed for spruce, birch and sugar cane bagasse. The reaction was carried out in alkaline water solution under 10 bar oxygen pressure and at mild reaction temperature of 120-140°C. Most of the lignin was solubilised by the alkaline oxidation pretreatment and an easily hydrolysable carbohydrate fraction was obtained. After 72 h hydrolysis with a 10 FPU/g enzyme dosage, glucose yields of 80%, 91%, and 97%, for spruce, birch and bagasse, respectively, were achieved. The enzyme dosage could be decreased to 4 FPU/g without a major effect in terms of the hydrolysis performance. Compared to steam explosion alkaline oxidation was found to be significantly better in the conditions tested, especially for the pretreatment of spruce. In hydrolysis and fermentation at 12% d.m. consistency an ethanol yield of 80% could be obtained with both bagasse and spruce in 1-3 days. PMID:23711947

  16. Improvement on sugar cane bagasse hydrolysis using enzymatic mixture designed cocktail.

    PubMed

    Bussamra, Bianca Consorti; Freitas, Sindelia; Costa, Aline Carvalho da

    2015-01-01

    The aim of this work was to study cocktail supplementation for sugar cane bagasse hydrolysis, where the enzymes were provided from both commercial source and microorganism cultivation (Trichoderma reesei and genetically modified Escherichia coli), followed by purification. Experimental simplex lattice mixture design was performed to optimize the enzymatic proportion. The response was evaluated through hydrolysis microassays validated here. The optimized enzyme mixture, comprised of T. reesei fraction (80%), endoglucanase (10%) and ?-glucosidase (10%), converted, theoretically, 72% of cellulose present in hydrothermally pretreated bagasse, whereas commercial Celluclast 1.5L converts 49.11%±0.49. Thus, a rational enzyme mixture designed by using synergism concept and statistical analysis was capable of improving biomass saccharification. PMID:25846188

  17. Binding Nickel and Zinc Ions with Activated Carbon Prepared from Sugar Cane Fibre (Saccharum officinarum L.)

    NASA Astrophysics Data System (ADS)

    Ikhuoria, E. U.; Onojie, O. C.

    Activated carbon was prepared from sugar cane fibre by carbonizing at 500°C for 30 min. This was followed by activation with ammonium chloride. The activated carbon was characterised in terms of pH, bulk density, ash content, surface area and surface charge. Equilibrium sorption of nickel and zinc ions by the activated carbon was studied using a range of metal ion concentrations. The sorption data was observed to have an adequate fit for the Langmuir isotherm equation. The level of metal ion uptake was found to be of the order: Ni2+ > Zn2+. The difference in the removal efficiency could be explained in terms of the hydration energy of the metal ions. The distribution coefficient for a range of metal ion concentration of the metal ions at the sorbent water interface is higher than the concentration in the continuous phase.

  18. Selection of sugar cane full-sib families using mixed models and ISSR markers.

    PubMed

    Almeida, L M; Viana, A P; Gonçalves, G M; Entringer, G C

    2014-01-01

    In 2006, an experiment examining families belonging to the first selection stage of the Sugar Cane Breeding Program of Universidade Federal Rural do Rio de Janeiro/Rede Interuniversitária para o Desenvolvimento do Setor Sucroalcooleiro was conducted. Families and plants within families were evaluated to select superior plants for subsequent stages of the breeding program. The experiment was arranged in a randomized block design, in which progenies were grouped into 4 sets, each with 4 replicates and 100 seedlings per plot. The following traits were evaluated: average stem diameter, total plot weight, number of stems, Brix of the lower stem, and Brix of the upper stem. The study of families used the restricted maximum likelihood/best linear unbiased procedure mixed models. After selection, families were genotyped via inter-simple sequence repeat to assess the genetic distance of genotypes. This approach was found to be efficient for selecting new genotypes. PMID:25501142

  19. The effect of fire retardants on combustion and pyrolysis of sugar-cane bagasse.

    PubMed

    Griffin, G J

    2011-09-01

    Experiments were conducted by thermal gravimetric analysis (TGA) and cone calorimetry to measure the affect of three fire retardants (ammonium sulphate, boric acid and borax) on the mass-loss rate and combustion characteristics of sugar-cane bagasse. Compared with untreated bagasse, bagasse impregnated with aqueous solutions of 0.1-0.5M fire retardants exhibited an increase in char mass production from 16% up to 41% when pyrolysed and up to a 41% reduction in total heat release (THR) during combustion. Char mass production was only a weak function of additive concentration over the range of concentrations (0.1-0.5M) used. Combining the additives did not show any synergistic effects for char production or heat release rate (HRR). Treatment of bagasse by these chemicals could be useful to enhance biochar yields in pyrolysis processes or to reduce flammability risk in composites containing bagasse. PMID:21680181

  20. Dissolved organic carbon in rainwater from areas heavily impacted by sugar cane burning

    NASA Astrophysics Data System (ADS)

    Coelho, C. H.; Francisco, J. G.; Nogueira, R. F. P.; Campos, M. L. A. M.

    This work reports on rainwater dissolved organic carbon (DOC) from Ribeirão Preto (RP) and Araraquara over a period of 3 years. The economies of these two cities, located in São Paulo state (Brazil), are based on agriculture and related industries, and the region is strongly impacted by the burning of sugar cane foliage before harvesting. Highest DOC concentrations were obtained when air masses traversed sugar cane fields burned on the same day as the rain event. Significant increases in the DOC volume weighted means (VWM) during the harvest period, for both sites, and a good linear correlation ( r = 0.83) between DOC and K (a biomass burning marker) suggest that regional scale organic carbon emissions prevail over long-range transport. The DOC VWMs and standard deviations were 272 ± 22 μmol L -1 ( n = 193) and 338 ± 40 μmol L -1 ( n = 80) for RP and Araraquara, respectively, values which are at least two times higher than those reported for other regions influenced by biomass burning, such as the Amazon. These high DOC levels are discussed in terms of agricultural activities, particularly the large usage of biogenic fuels in Brazil, as well as the analytical method used in this work, which includes volatile organic carbon when reporting DOC values. Taking into account rainfall volume, estimated annual rainwater DOC fluxes for RP (4.8 g C m -2 yr -1) and Araraquara (5.4 g C m -2 yr -1) were close to that previously found for the Amazon region (4.8 g C m -2 yr -1). This work also discusses whether previous calculations of the global rainwater carbon flux may have been underestimated, since they did not consider large inputs from biomass combustion sources, and suffered from a possible analytical bias.

  1. Wastewater use in agriculture: irrigation of sugar cane with effluents from the Cañaveralejo wastewater treatment plant in Cali, Colombia.

    PubMed

    Madera, C A; Silva, J; Mara, D D; Torres, P

    2009-09-01

    In Valle del Cauca, south-west Colombia, surface and ground waters are used for sugar cane irrigation at a rate of 100 m3 of water per tonne of sugar produced. In addition large quantities of artificial fertilizers and pesticides are used to grow the crop. Preliminary experiments were undertaken to determine the feasibility of using effluents from the Cañaveralejo primary wastewater treatment plant in Cali. Sugar cane variety CC 8592 was planted in 18 box plots, each 0.5 m2. Six were irrigated with conventional primary effluent, six with chemically enhanced primary effluent and six with groundwater. For each set of six box plots, three contained local soil and three a 50:50 mixture of sand and rice husks. The three irrigation waters were monitored for 12 months, and immediately after harvest the sugar content of the sugar cane juice determined. All physico-chemical quality parameters for the three irrigation waters were lower than the FAO guideline values for irrigation water quality; on the basis of their sodium absorption ratios and electrical conductivity values, both wastewater effluents were in the USDA low-to-medium risk category C2S1. There was no difference in the sugar content of the cane juice irrigated with the three waters. However, the microbiological quality (E. coli and helminth numbers) of the two effluents did not meet the WHO guidelines and therefore additional human exposure control measures are required in order to minimize any resulting adverse health risks to those working in the wastewater-irrigated fields. PMID:19886425

  2. HDP for the Neutralized pH Value Control in the Clarifying Process of Sugar Cane Juice

    NASA Astrophysics Data System (ADS)

    Lin, Xiaofeng; Yang, Jiaran

    2009-05-01

    Neutralizing pH value of sugar cane juice is the important craft in the control process in the clarifying process of sugar cane juice, which is the important factor to influence output and the quality of white sugar. On the one hand, it is an important content to control the neutralized pH value within a required range, which has the vital significance for acquiring high quality purified juice, reducing energy consumption and raising sucrose recovery. On the other hand, it is a complicated physical-chemistry process, which has the characteristics of strong non-linearity, time-varying, large time-delay, and multi-input. Therefore, there has not been a very good solution to control the neutralized pH value. Firstly, in this chapter, a neural network model for the clarifying process of sugar juice is established based on gathering 1200 groups of real-time sample data in a sugar factory. Then, the HDP (Heuristic Dynamic Programming) method is used to optimize and control the neutralized pH value in the clarifying process of sugar juice. Simulation results indicate that this method has good control effect. This will build a good foundation for stabilizing the clarifying process and enhancing the quality of the purified juice and lastly enhancing the quality of white sugar.

  3. High Level Ethanol from Sugar Cane Molasses by a New Thermotolerant Saccharomyces cerevisiae Strain in Industrial Scale.

    PubMed

    Fadel, M; Keera, Abeer A; Mouafi, Foukia E; Kahil, Tarek

    2013-01-01

    A new local strain of S. cerevisiae F-514, for ethanol production during hot summer season, using Egyptian sugar cane molasses was applied in Egyptian distillery factory. The inouluum was propagated through 300?L, 3?m(3), and 12?m(3) fermenters charged with diluted sugar cane molasses containing 4%-5% sugars. The yeast was applied in fermentation vessels 65?m(3) working volume to study the varying concentrations of urea, DAP, orthophosphoric acid (OPA), and its combinations as well as magnesium sulfate and inoculum size. The fermenter was allowed to stay for a period of 20 hours to give time for maximum conversion of sugars into ethanol. S. cerevisiae F-514 at molasses sugar level of 18%?(w/v), inoculum size of 20%?(v/v) cell concentration of 3.0 × 10(8)/mL, and combinations of urea, diammonium phosphate (DAP), orthophosphoric acid (OPA), and magnesium sulfate at amounts of 20, 10, 5, and 10?kg/65?m(3) working volume fermenters, respectively, supported maximum ethanol production (9.8%, v/v), fermentation efficiency (FE) 88.1%, and remaining sugars (RS) 1.22%. The fermentation resulted 13.4?g dry yeast/L contained 34.6% crude protein and 8.2% ash. By selecting higher ethanol yielding yeast strain and optimizing, the fermentation parameters both yield and economics of the fermentation process can be improved. PMID:24363937

  4. High Level Ethanol from Sugar Cane Molasses by a New Thermotolerant Saccharomyces cerevisiae Strain in Industrial Scale

    PubMed Central

    Fadel, M.; Keera, Abeer A.; Mouafi, Foukia E.; Kahil, Tarek

    2013-01-01

    A new local strain of S. cerevisiae F-514, for ethanol production during hot summer season, using Egyptian sugar cane molasses was applied in Egyptian distillery factory. The inouluum was propagated through 300?L, 3?m3, and 12?m3 fermenters charged with diluted sugar cane molasses containing 4%-5% sugars. The yeast was applied in fermentation vessels 65?m3 working volume to study the varying concentrations of urea, DAP, orthophosphoric acid (OPA), and its combinations as well as magnesium sulfate and inoculum size. The fermenter was allowed to stay for a period of 20 hours to give time for maximum conversion of sugars into ethanol. S. cerevisiae F-514 at molasses sugar level of 18%?(w/v), inoculum size of 20%?(v/v) cell concentration of 3.0 × 108/mL, and combinations of urea, diammonium phosphate (DAP), orthophosphoric acid (OPA), and magnesium sulfate at amounts of 20, 10, 5, and 10?kg/65?m3 working volume fermenters, respectively, supported maximum ethanol production (9.8%, v/v), fermentation efficiency (FE) 88.1%, and remaining sugars (RS) 1.22%. The fermentation resulted 13.4?g dry yeast/L contained 34.6% crude protein and 8.2% ash. By selecting higher ethanol yielding yeast strain and optimizing, the fermentation parameters both yield and economics of the fermentation process can be improved. PMID:24363937

  5. The effect of Schistosoma mansoni infection on the productivity of cane cutters on a sugar estate in Tanzania

    PubMed Central

    Fenwick, A.; Figenschou, B. H.

    1972-01-01

    In an attempt to justify future snail control on an irrigated sugar estate in Tanzania, the effects of Schistosoma mansoni infection on the productivity of apparently healthy cane cutters were investigated. The bonus earnings of cane cutters who were found to be infected with S. mansoni were compared, retrospectively, with earnings of uninfected cane cutters during the years 1968-69. For one 6-month period a more detailed study was made to correlate bonus earnings with actual output in tons of cane cut. It was found that in the four 6-month periods the mean bonus earnings of the uninfected cane cutters exceeded the mean bonus earnings of the infected men by 11.0%, 11.4%, 6.0%, and 13.7%, respectively. In all except the third period these differences were statistically significant. After treatment for S. mansoni infection, the workers were able to improve their earnings relative to both infected and uninfected workers. In a more detailed study of some of the workers during the third 6-month period, it was discovered that a 4% difference in bonus earnings represented a 1% difference in output. Taking into account the variations of bonus earnings it was estimated that the overall difference in productivity between infected and uninfected workers was 3-5%. PMID:4540675

  6. Composition and properties of the actinomycete flora in a ferralitic tropical soil (oxisol)-sugar cane ecological system.

    PubMed

    Fernandez, C; Szabó, I M

    1978-01-01

    Streptomycetes constituted about 46--48 per cent of the total aerobic microflora in the cultivated horizon of the studied ferralitic tropical soil below sugar cane plantation. This streptomycete fraction of the soil microbial community was composed of 13 (or more) species of Streptomyces (S. chromofuscus, S. chromogenus, S. diastatochromogenes, S. flavochromogenes, S. griseolus, S. nigrescens, S. phaeofaciens, S. sterilis, S. violaceus, Streptomyces sp. I--III), and Streptoverticillium (Sv. aspergilloides). None of these organisms did occur, with detectable frequency of occurrence, in the root surface region of sugar cane. Here, in the rhizoplane, we found a numerically small population of streptomycetes (about 5 per cent of the total bacterial flora), composed of two species (Streptomyces sp. IV and S. griseorubiginosus) which were, however, not detected in soil samples. PMID:664932

  7. Invertase activity of intact cells of Saccharomyces cerevisiae growing on sugar cane molasses. 1. Steady-state continuous culture tests

    SciTech Connect

    Vitolo, M.; Vairo, M.L.R.; Borzani, W.

    1985-08-01

    During the steady-state continuous culture of Saccharomyces cerevisiae on sugar cane blackstrap molasses under different experimental conditions, oscillatory variations of the invertase activity of the intact yeast cells were observed. The continuous morphological changes of the cells wall and of the periplasmic space affecting the interaction between invertase and sucrose molecules could be responsible by the observed oscillatory phenomena. The average invertase activity at the steady state is linearly correlated to the cell's growth rate.

  8. Parameters-related uncertainty in modeling sugar cane yield with an agro-Land Surface Model

    NASA Astrophysics Data System (ADS)

    Valade, A.; Ciais, P.; Vuichard, N.; Viovy, N.; Ruget, F.; Gabrielle, B.

    2012-12-01

    Agro-Land Surface Models (agro-LSM) have been developed from the coupling of specific crop models and large-scale generic vegetation models. They aim at accounting for the spatial distribution and variability of energy, water and carbon fluxes within soil-vegetation-atmosphere continuum with a particular emphasis on how crop phenology and agricultural management practice influence the turbulent fluxes exchanged with the atmosphere, and the underlying water and carbon pools. A part of the uncertainty in these models is related to the many parameters included in the models' equations. In this study, we quantify the parameter-based uncertainty in the simulation of sugar cane biomass production with the agro-LSM ORCHIDEE-STICS on a multi-regional approach with data from sites in Australia, La Reunion and Brazil. First, the main source of uncertainty for the output variables NPP, GPP, and sensible heat flux (SH) is determined through a screening of the main parameters of the model on a multi-site basis leading to the selection of a subset of most sensitive parameters causing most of the uncertainty. In a second step, a sensitivity analysis is carried out on the parameters selected from the screening analysis at a regional scale. For this, a Monte-Carlo sampling method associated with the calculation of Partial Ranked Correlation Coefficients is used. First, we quantify the sensitivity of the output variables to individual input parameters on a regional scale for two regions of intensive sugar cane cultivation in Australia and Brazil. Then, we quantify the overall uncertainty in the simulation's outputs propagated from the uncertainty in the input parameters. Seven parameters are identified by the screening procedure as driving most of the uncertainty in the agro-LSM ORCHIDEE-STICS model output at all sites. These parameters control photosynthesis (optimal temperature of photosynthesis, optimal carboxylation rate), radiation interception (extinction coefficient), root uptake of water (root profile), and transpiration and respiration (stomatal conductance, growth and maintenance respiration coefficients). We find that the optimal carboxylation rate and optimal photosynthesis temperature parameters contribute most to the uncertainty in NPP and GPP simulations whereas stomatal conductance is the most sensitive parameter controlling SH, followed by optimal photosynthesis temperature and optimal carboxylation rate. The spatial variation of the ranked correlation between input parameters and output variables is well explained by rain and temperature drivers, suggesting that climate mediated regionally different sensitivities of modeled sugarcane yield to the model parameters, for Australia and Brazil.

  9. Response of Saccharomyces cerevisiae to cadmium and nickel stress: the use of the sugar cane vinasse as a potential mitigator.

    PubMed

    Oliveira, Ricardo Pinheiro de Souza; Basso, Luiz Carlos; Junior, Adalberto Pessoa; Penna, Thereza Christina Vessoni; Del Borghi, Marco; Converti, Attilio

    2012-01-01

    Most of the metals released from industrial activity, among them are cadmium (Cd) and nickel (Ni), inhibit the productivity of cultures and affect microbial metabolism. In this context, the aim of this work was to investigate the capacity of sugar cane vinasse to mitigate the adverse effects of Cd and Ni on cell growth, viability, budding rate and trehalose content of Saccharomyces cerevisiae, likely because of adsorption and chelating action. For this purpose, the yeast was grown batch-wise in YED medium supplemented with selected amounts of vinasse and Cd or Ni. The negative effects of Cd and Ni on S. cerevisiae growth and the mitigating one of sugar cane vinasse were quantified by an exponential model. Without vinasse, the addition of increasing levels of Cd and Ni reduced the specific growth rate, whereas in its presence no reduction was observed. Consistently with the well-proved toxicity of both metals, cell viability and budding rate progressively decreased with increasing their concentration, but in the presence of vinasse the situation was remarkably improved. The trehalose content of S. cerevisiae cells followed the same qualitative behavior as cell viability, even though the negative effect of both metals on this parameter was stronger. These results demonstrate the ability of sugar cane vinasse to mitigate the toxic effects of Cd and Ni. PMID:21809054

  10. Energy, capital and labor tradeoffs in traditional, small- and large-scale Pakistani sugar-cane processing techniques

    SciTech Connect

    Delasanta, D.

    1981-01-01

    After reviewing previous work on choice of sugar processing technique, an analysis of five combinations of product and scale for sugar manufacture in Pakistan are presented. Energy, capital and labor tradeoffs associated with traditional, small- and large-scale processing techniques are identified and discussed, and a methodology is presented for their analysis. Economic evaluation of these tradeoffs using shadow prices within the framework of economic cost/benefit analysis, indicates that improved, small-scale gur processing is the most attractive option of the five. The choice of sugar cane processing for Pakistan is analyzed in terms of its capital, labor and energy costs to that country. In an approach that may be useful in assessing these costs in other third World food processing areas, this analysis uses shadow pricing within the framework of econimic cost/benefit analysis, to evaluate the choice of sugar processing technique for Pakistan.

  11. Deposition and leaching of tebuthiuron on sugar cane straw applied with and without alkyl polyglycoside adjuvant.

    PubMed

    Negrisoli, Eduardo; da Costa, Eduardo Antonio Drolhe; Velini, Edivaldo Domingues; Cavenaghi, Anderson Luis; Tofoli, Gustavo Radomille

    2005-01-01

    A laboratory experiment was carried out aiming to study the effects of an alkyl polyglycoside adjuvant (APG) on deposition and leaching of the herbicide tebuthiuron applied on sugar cane straw. Tebuthiuron, at concentration of 1200 mg L(-1), was applied separately and in tank mix with the APG adjuvant, at concentrations of 0.07 and 0.09% (wt v(-1)), using a spraying volume of 204 L ha(-1). A precipitation equivalent to 20 mm of rain was simulated, 24 h after the applications, to evaluate the herbicide leaching. The quantification of tebuthiuron was carried out by the high performance liquid chromatography (HPLC). It was observed that the addition of APG adjuvant at 0.07% (wt v(-1)) provided an increase of 11.5% in the deposition of tebuthiuron on straw, reduction of 50.4% in the drift of the herbicide and it did not affect significantly the leached amount (68.5%), when compared with the treatment where tebuthiuron was applied alone (70.8%). At the concentration of 0.09% (wt v(-1)), the APG adjuvant caused an increase of 22.7% in the deposition; it reduced the drift of the herbicide by 99.9% and reduced the leached amount by 7.6% thereby increasing the retention of the herbicide by straw. PMID:15656183

  12. Purification and properties of endoglucanase from a sugar cane bagasse hydrolyzing strain, Aspergillus glaucus XC9.

    PubMed

    Tao, Yi-Ming; Zhu, Xiang-Zhi; Huang, Jian-Zhong; Ma, Su-Juan; Wu, Xiao-Bing; Long, Min-Nan; Chen, Qing-Xi

    2010-05-26

    An endoglucanase (EG) from Aspergillus glaucus XC9 grown on 0.3% sugar cane bagasse as a carbon source was purified from the culture filtrate using ammonium sulfate, an anion exchange DEAE Sepharose fast flow column, and a Sephadex G-100 column, with a purification fold of 21.5 and a recovery of 22.3%. The ideal time for EG production is on the fourth day at 30 degrees C using bagasse as a substrate. Results obtained indicate that the enzyme was a monomer protein, and the molecular weight was determined to be 31 kDa. The optimum pH and temperature of EG for the hydrolysis of carboxymethylcellulose sodium (CMC-Na) were pH 4.0 and 50 degrees C, respectively. EG was stable over the pH range from 3.5 to 7.5 and at temperatures below 55 degrees C. Kinetic behavior of EG in the hydrolysis of CMC-Na followed Michaelis-Menten kinetics with constant K(m) of 5.0 mg/mL at pH 4.0 and 50 degrees C. The enzyme activity was stimulated by Fe(2+) and Mn(2+) but inhibited by Cd(2+), Pb(2+), and Cu(2+). The EDC chemical modification suggested that at least one carboxyl group probably acted as a proton donor in the enzyme active site. PMID:20415423

  13. Respiratory toxicity of repeated exposure to particles produced by traffic and sugar cane burning.

    PubMed

    Mazzoli-Rocha, Flavia; Carvalho, Giovanna M C; Lanzetti, Manuella; Valença, Samuel S; Silva, Luiz F F; Saldiva, Paulo H N; Zin, Walter A; Faffe, Débora S

    2014-01-15

    We compared the toxicity of subchronic exposure to equivalent masses of particles from sugar cane burning and traffic. BALB/c mice received 3 intranasal instillations/week during 1, 2 or 4 weeks of either distilled water (C1, C2, C4) or particles (15μg) from traffic (UP1, UP2, UP4) or biomass burning (BP1, BP2, BP4). Lung mechanics, histology and oxidative stress were analyzed 24h after the last instillation. In all instances UP and BP groups presented worse pulmonary elastance, airway and tissue resistance, alveolar collapse, bronchoconstriction and macrophage influx into the lungs than controls. UP4, BP2 and BP4 presented more alveolar collapse than UP1 and BP1, respectively. UP and BP had worse bronchial and alveolar lesion scores than their controls; BP4 had greater bronchial lesion scores than UP4. Catalase was higher in UP4 and BP4 than in C4. In conclusion, biomass particles were more toxic than those from traffic after repeated exposures. PMID:24280381

  14. The Development of Snail Control Methods on an Irrigated Sugar-Cane Estate in Northern Tanzania*

    PubMed Central

    Fenwick, A.

    1970-01-01

    In an attempt to prevent the transmission of Schistosoma mansoni on an irrigated sugar-cane estate, molluscicide experiments were carried out to find the optimum methods for controlling the intermediate-host snails, Biomphalaria pfeifferi. The ease of application of N-tritylmorpholine led to its adoption as the molluscicide of choice for the two separate irrigation systems on the estate. Experiments on the frequency and duration of molluscicide treatments were carried out, and from these it was concluded that 5-day applications of N-tritylmorpholine at 0.025 ppm every 7 weeks might lead to a break in transmission by control of the snails. In another set of trials, drainage ditches were treated alternately with N-tritylmorpholine and niclosamide ethanolamine salt, and although the chemicals differed only slightly in their effect, the latter—being ovicidal—was chosen to be applied at approximately 4 ppm by knapsack sprayer every 8 weeks. Extra treatment of small pools with the same compound was carried out during the long rains when irrigation was unnecessary and most of the canals were dry. It is pointed out that the effect of the control methods on S. mansoni transmission will need to be evaluated by studying the incidence of the disease in the population. PMID:5310954

  15. Immunostimulation of sugar cane extract on neutrophils to Salmonella typhimurium infection in mice.

    PubMed

    Chen, Ming-Hua; Lo, Dan-Yuan; Liao, Jiunn-Wang; Hsuan, Shih-Ling; Chien, Maw-Sheng; Lin, Cheng-Chung; Chen, Ter-Hsin; Lee, Wei-Cheng

    2012-07-01

    The aim of this study was to evaluate the immunomodulatory effects of sugar cane extract (SCE) on the biological activities of neutrophils in mice. Six-week-old BALB/c mice were fed 1250?mg/kg of SCE once. The generation, migration and biological functions of neutrophils and the survival rates of the mice in response to Salmonella typhimurium infection were evaluated. The results show that the numbers of both bone marrow cells and neutrophils were significantly increased in response to SCE administration (p?

  16. Fast chromatographic determination of polycyclic aromatic hydrocarbons in aerosol samples from sugar cane burning.

    PubMed

    Godoi, Ana F L; Ravindra, Khaiwal; Godoi, Ricardo H M; Andrade, Sandro J; Santiago-Silva, Mary; Van Vaeck, Luc; Van Grieken, René

    2004-02-20

    Sugar cane burning in Brazil causes remarkable amounts of organic compounds to be emitted amongst which the polycyclic aromatic hydrocarbons (PAHs) represent serious health hazards. Therefore, 24-h aerosol samples (< 10 microm aerodynamic diameter) were collected in Araraquara city (São Paulo state) during the harvest season using a Hi-Vol sampler. PAHs were recovered using an Accelerated Solvent Extractor and analyzed by low-pressure gas chromatography-ion trap mass spectrometry (LP-GC-IT-MS). The fully automated extraction process was performed in less than 25 min with a solvent consumption of approximately 20 ml. The use of a deactivated 0.6 m x 0.10 mm i.d. restrictor coupled to a 10 m wide-bore analytical column allowed most of the 16 PAHs in EPA's priority list to be identified and quantified in only 13 min. Concentrations of PAHs in Araraquara aerosols ranged between 0.5 and 8.6 ng m(-3). PMID:14971483

  17. Response of Anastrepha suspensa (Diptera: Tepritidae) to white and brown cane, coconut, date, date jaggery and panela sugar solutions with varying degrees of fermentation

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We measured the EAG response of Anastrepha suspensa (Loew), the Caribbean fruit fly to six different sugars (white and brown cane, coconut, date, date jaggery and panela sugars). Wild and lab female flies of different physiological states (immature and mature) were tested in dry crystals and 10% su...

  18. [Determination of brix and POL in sugar cane juice by using near infrared spectroscopy coupled with BP-ANN].

    PubMed

    Wang, Xin; Ye, Hua-jun; Li, Qing-tao; Xie, Jin-chun; Lu, Jia-jiong; Xia, A-lin; Wang, Jian

    2010-07-01

    The models of quantitative analysis of brix and pol in sugar cane juice were established by using near infrared spectroscopy (NIR) coupled with the back propagation-artificial neural network method (BP-ANN). The spectra of cane juice samples were obtained by the way of 2 mm optical length transmission and using the NIR spectrometer of 1,000-1,800 nm wavelength. Firstly, the data of original spectra were pretreated by Savitzky-Golay derivative and mean-centering. Secondly, the wavelength range of model was optimized by using correlation coefficient method coupled with the characteristic absorbance of the spectrum. Finally, the principal components, obtained by PLS dimension-reducing, were inputed into BP-ANN. The calibration models were established by calibration set and validated by prediction set. The results showed that the related coefficients (R2) of prediction for brix and pol were 0.982 and 0.979, respectively; and the standard errors of prediction (SEP) for brix and pol were 0.159 and 0.137, respectively. BP-ANN was more accurate in the prediction of brix and pol compared with the partial least square method (PLS). The method can be applied to fast and accurate determination of brix and pol in sugar cane juice. PMID:20827965

  19. Sugarcane for water-limited environments. Genetic variation in cane yield and sugar content in response to water stress.

    PubMed

    Basnayake, J; Jackson, P A; Inman-Bamber, N G; Lakshmanan, P

    2012-10-01

    Water limitation is a major production constraint for sugarcane worldwide. However, to date, there has been little investigation of patterns of genetic variation in the response to water stress in sugarcane. Field experiments were conducted over 3 years under fully irrigated and managed water stress conditions at two locations in Northern Queensland in Australia. Eighty-nine genetically diverse clones were evaluated for their yield performance and sugar attributes. Water stress treatments reduced cane yield [tonnes of cane per hectare (TCH)] and total dry matter (TDM) by 17-52% and 20-56%, respectively, compared with irrigated treatments in the same experiments. Nevertheless, there was little genotype×environment interaction variation for TCH, TDM, or commercial cane sugar (CCS), and hence high genetic correlations between the irrigated and water stress treatments across environments. Both commercial and unselected clones performed poorly under severe stress environments, while the commercial clones outperformed the unselected clones under mild and moderate stress conditions. The results presented here highlight the contribution of intrinsic potential yields (yield under well-irrigated conditions) of some selected and unselected clones to maintain relatively high productivity in a range of moderate stress conditions imposed. The physiological basis for the high genetic correlations is at present unclear, but some explanations are hypothesized. The choice of stress levels in selection trials would not appear to be a critical issue for sugarcane breeding programmes, at least for the early phases of selection, where similar ranking clones across a range of moderate water stresses may be expected. PMID:22996675

  20. [Non-specific bronchoprovocation with metacholine in children before and during sugar cane burning in Catanduva-SP

    PubMed

    Barba, T F; Barba, C A; Solé, D; Naspitz, C K

    1998-01-01

    OBJECTIVE: Evaluate the influence of sugar cane burning on BHR of asthmatic and "normal" control children by metacholine bronchoprovocation tests; and verify if interferes in pulmonary function tests.METHODS: Twenty-two asthmatic children (A) aged from 7 to 14 years old, and twelve "normal" control children (C), aged from 8 to 13 years, were submitted to non-specific bronchoprovocation test with methacholine before and during the sugar cane burning. The metacholine concentrations used were 0.025; 0.25; 1.0; 2.5; 10.0; 25.0 mg/ml, and the results were expressed in PC(20) FEV1 (concentration of metacholine that induces a fall of 20% or more in the forced expiratory volume in the first second).RESULTS: The PC(20) average for asthmatic children was significantly lower than the control group, before (A= 3.68; C= 25.62 mg/ml) and during the burning (A= 4.11; C= 25.25 mg/ml) (p < 0.05). However, there were no significant differences, when compared in each group PC(20) values before and during burning. The same was observed regarding FEV1, forced vital capacity (FVC) and forced expiratory flux between 25 and 75% of FVC (FEF (25-75%)).CONCLUSIONS: It was not possible to demonstrate that cane plantation burning influences the BHR, and pulmonary functions tests of the studied children. PMID:14685625

  1. Enterobacter sacchari sp. nov., a nitrogen-fixing bacterium associated with sugar cane (Saccharum officinarum L.).

    PubMed

    Zhu, Bo; Zhou, Qing; Lin, Li; Hu, Chunjin; Shen, Ping; Yang, Litao; An, Qianli; Xie, Guanlin; Li, Yangrui

    2013-07-01

    Five nitrogen-fixing bacterial strains (SP1(T), NN143, NN144, NN208 and HX148) were isolated from stem, root or rhizosphere soil of sugar cane (Saccharum officinarum L.) plants. Cells were Gram-negative, motile, rods with peritrichous flagella. DNA G+C content was 55.0 ± 0.5 mol%. Sequence determinations and phylogenetic analysis of 16S rRNA gene and rpoB indicated that the strains were affiliated with the genus Enterobacter and most closely related to E. radicincitans DSM 16656(T) and E. oryzae LMG 24251(T). Fluorimetric determination of thermal denaturation temperatures after DNA-DNA hybridization, enterobacterial repetitive intergenic consensus PCR and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry differentiated the whole-genome, genotype and protein profiles from those of E. radicincitans and E. oryzae. The strains' cell fatty acid composition differentiated them from E. radicincitans and E. oryzae by containing a higher level of summed feature 2 (C16 : 1?7c and/or C16 : 1?6c) and a lower level of C17 : 0 cyclo. Their physiological and biochemical profiles differentiated them from E. radicincitans by being positive for methyl red test, ornithine decarboxylase and utilization of putrescine, D-arabitol, L-fucose and methyl ?-D-glucoside and being negative for arginine dihydrolase, and differentiated them from E. oryzae by being positive for aesculin hydrolysis and utilization of putrescine, D-arabitol and L-rhamnose and being negative for arginine dihydrolase, lysine decarboxylase and utilization of mucate. The five strains therefore represent a novel species, for which the name Enterobacter sacchari sp. nov. is proposed, with the type strain SP1(T) ( = CGMCC 1.12102(T) = LMG 26783(T)). PMID:23291881

  2. Changes in cholesterol kinetics following sugar cane policosanol supplementation: a randomized control trial

    PubMed Central

    Kassis, Amira N; Jones, Peter JH

    2008-01-01

    Background Sugar cane policosanols (SCP) have been shown to exert cholesterol-modulating properties in various studies conducted in Cuba by substantially reducing cholesterol synthesis. Independent research examining changes in cholesterol kinetics in response to SCP is limited to few studies, none of which was able to replicate findings of the original research. Moreover, no data are available on the effect of SCP on cholesterol absorption to date. The present study was undertaken to determine effects on cholesterol kinetics, namely synthesis and absorption, within hypercholesterolemic individuals consuming a SCP treatment. Twenty-one otherwise healthy hypercholesterolemic subjects participated in a randomized double-blind crossover study where they received 10 mg/day of policosanols or a placebo incorporated in margarine as an evening snack for a period of 28 days. The last week of the study phase, subjects were given 13C labelled cholesterol and deuterated water for the measurement of cholesterol absorption and synthesis respectively. Blood was collected on the first two and last five days of the trial. Cholesterol absorption and synthesis were determined by measuring red cell cholesterol 13C and deuterium enrichment, respectively. Results There was no significant change in LDL cholesterol levels as compared to control. In addition, the area under the curve for red cell cholesterol 13C enrichment across 96 hours was not significantly different in the SCP group as compared to control. Similarly, no difference was observed in the fractional rate of cholesterol synthesis over the period of 24 hours between the two treatment groups. Conclusion The findings of the present study fail to support previous research concerning efficacy and mechanism of action for policosanols. PMID:18447941

  3. Fertilization practices and soil variations control nitrogen oxide emissions from tropical sugar cane

    NASA Astrophysics Data System (ADS)

    Matson, P. A.; Billow, C.; Hall, S.; Zachariassen, J.

    1996-08-01

    Nitrogen (N) fertilization of agricultural systems is thought to be a major source of the increase in atmospheric N2O; NO emissions from soils have also been shown to increase due to N fertilization. While N fertilizer use is increasing rapidly in the developing world and in the tropics, nearly all of our information on gas emissions is derived from studies of temperate zone agriculture. Using chambers, we measured fluxes of N2O and NO following urea fertilization in tropical sugar cane systems growing on several soil types in the Hawaiian Islands, United States. On the island of Maui, where urea is applied in irrigation lines and soils are mollisols and inceptisols, N2O fluxes were elevated for a week or less after fertilization; maximum average fluxes were typically less than 30 ng cm-2 h-1. NO fluxes were often an order of magnitude less than N2O. Together, N2O and NO represented from 0.03 to 0.5% of the applied N. In fields on the island of Hawaii, where urea is broadcast on the surface and soils are andisols, N2O fluxes were similar in magnitude to Maui but remained elevated for much longer periods after fertilization. NO emissions were 2-5 times higher than N2O through most of the sampling periods. Together the gas losses represented approximately 1.1-2.5% of the applied N. Laboratory studies indicate that denitrification is a critical source of N2O in Maui, but that nitrification is more important in Hawaii. Experimental studies suggest that differences in the pattern of N2O/NO and the processes producing them are a result of both carbon availability and placement of fertilizer and that the more information-intensive fertilizer management practice results in lower emissions.

  4. Techno-economic evaluation of 2nd generation bioethanol production from sugar cane bagasse and leaves integrated with the sugar-based ethanol process

    PubMed Central

    2012-01-01

    Background Bioethanol produced from the lignocellulosic fractions of sugar cane (bagasse and leaves), i.e. second generation (2G) bioethanol, has a promising market potential as an automotive fuel; however, the process is still under investigation on pilot/demonstration scale. From a process perspective, improvements in plant design can lower the production cost, providing better profitability and competitiveness if the conversion of the whole sugar cane is considered. Simulations have been performed with AspenPlus to investigate how process integration can affect the minimum ethanol selling price of this 2G process (MESP-2G), as well as improve the plant energy efficiency. This is achieved by integrating the well-established sucrose-to-bioethanol process with the enzymatic process for lignocellulosic materials. Bagasse and leaves were steam pretreated using H3PO4 as catalyst and separately hydrolysed and fermented. Results The addition of a steam dryer, doubling of the enzyme dosage in enzymatic hydrolysis, including leaves as raw material in the 2G process, heat integration and the use of more energy-efficient equipment led to a 37 % reduction in MESP-2G compared to the Base case. Modelling showed that the MESP for 2G ethanol was 0.97 US$/L, while in the future it could be reduced to 0.78 US$/L. In this case the overall production cost of 1G + 2G ethanol would be about 0.40 US$/L with an output of 102 L/ton dry sugar cane including 50 % leaves. Sensitivity analysis of the future scenario showed that a 50 % decrease in the cost of enzymes, electricity or leaves would lower the MESP-2G by about 20%, 10% and 4.5%, respectively. Conclusions According to the simulations, the production of 2G bioethanol from sugar cane bagasse and leaves in Brazil is already competitive (without subsidies) with 1G starch-based bioethanol production in Europe. Moreover 2G bioethanol could be produced at a lower cost if subsidies were used to compensate for the opportunity cost from the sale of excess electricity and if the cost of enzymes continues to fall. PMID:22502801

  5. Vinasse application to sugar cane fields. Effect on the unsaturated zone and groundwater at Valle del Cauca (Colombia).

    PubMed

    Ortegón, Gloria Páez; Arboleda, Fernando Muñoz; Candela, Lucila; Tamoh, Karim; Valdes-Abellan, Javier

    2016-01-01

    Extensive application of vinasse, a subproduct from sugar cane plantations for bioethanol production, is currently taking place as a source of nutrients that forms part of agricultural management in different agroclimatic regions. Liquid vinasse composition is characterised by high variability of organic compounds and major ions, acid pH (4.7), high TDS concentration (117,416-599,400mgL(-1)) and elevated EC (14,350-64,099μScm(-1)). A large-scale sugar cane field application is taking place in Valle del Cauca (Colombia), where monitoring of soil, unsaturated zone and the aquifer underneath has been made since 2006 to evaluate possible impacts on three experimental plots. For this assessment, monitoring wells and piezometers were installed to determine groundwater flow and water samples were collected for chemical analysis. In the unsaturated zone, tensiometers were installed at different depths to determine flow patterns, while suction lysimeters were used for water sample chemical determinations. The findings show that in the sandy loam plot (Hacienda Real), the unsaturated zone is characterised by low water retention, showing a high transport capacity, while the other two plots of silty composition presented temporal saturation due to La Niña event (2010-2011). The strong La Niña effect on aquifer recharge which would dilute the infiltrated water during the monitoring period and, on the other hand dissolution of possible precipitated salts bringing them back into solution may occur. A slight increase in the concentration of major ions was observed in groundwater (~5% of TDS), which can be attributed to a combination of factors: vinasse dilution produced by water input and hydrochemical processes along with nutrient removal produced by sugar cane uptake. This fact may make the aquifer vulnerable to contamination. PMID:26372944

  6. The RpfCG two-component system negatively regulates the colonization of sugar cane stalks by Xanthomonas albilineans.

    PubMed

    Rott, Philippe; Fleites, Laura A; Mensi, Imène; Sheppard, Lauren; Daugrois, Jean-Heinrich; Dow, J Maxwell; Gabriel, Dean W

    2013-06-01

    The genome of Xanthomonas albilineans, the causal agent of sugar cane leaf scald, carries a gene cluster encoding a predicted quorum sensing system that is highly related to the diffusible signalling factor (DSF) systems of the plant pathogens Xylella fastidiosa and Xanthomonas campestris. In these latter pathogens, a cluster of regulation of pathogenicity factors (rpf) genes encodes the DSF system and is involved in control of various cellular processes. Mutation of Xanthomonas albilineans rpfF, encoding a predicted DSF synthase, in Florida strain XaFL07-1 resulted in a small reduction of disease severity (DS). Single-knockout mutations of rpfC and rpfG (encoding a predicted DSF sensor and regulator, respectively) had no effect on DS or swimming motility of the pathogen. However, capacity of the pathogen to cause disease was slightly reduced and swimming motility was severely affected when rpfG and rpfC were both deleted. Similar results were obtained when the entire rpfGCF region was deleted. Surprisingly, when the pathogen was mutated in rpfG or rpfC (single or double mutations) it was able to colonize sugar cane spatially more efficiently than the wild-type. Mutation in rpfF alone did not affect the degree of spatial invasion. We conclude that the DSF signal contributes to symptom expression but not to invasion of sugar cane stalks by Xanthomonas albilineans strain XaFL07-1, which is mainly controlled by the RpfCG two-component system. PMID:23538716

  7. Analysis of sucrose accumulation in the sugar cane culm on the basis of in vitro kinetic data.

    PubMed Central

    Rohwer, J M; Botha, F C

    2001-01-01

    Sucrose accumulation in developing sugar cane (Saccharum officinarum) is accompanied by a continuous synthesis and cleavage of sucrose in the storage tissues. Despite numerous studies, the factors affecting sucrose accumulation are still poorly understood, and no consistent pattern has emerged which pinpoints certain enzyme activities as important controlling steps. Here, we develop an approach based on pathway analysis and kinetic modelling to assess the biochemical control of sucrose accumulation and futile cycling in sugar cane. By using the concept of elementary flux modes, all possible routes of futile cycling of sucrose were enumerated in the metabolic system. The available kinetic data for the pathway enzymes were then collected and assembled in a kinetic model of sucrose accumulation in sugar cane culm tissue. Although no data were fitted, the model agreed well with independent experimental results: in no case was the difference between calculated and measured fluxes and concentrations greater than 2-fold. The model thus validated was then used to assess different enhancement strategies for increasing sucrose accumulation. First, the control coefficient of each enzyme in the system on futile cycling of sucrose was calculated. Secondly, the activities of those enzymes with the numerically largest control coefficients were varied over a 5-fold range to determine the effect on the degree of futile cycling, the conversion efficiency from hexoses into sucrose, and the net sucrose accumulation rate. In view of the modelling results, overexpression of the fructose or glucose transporter or the vacuolar sucrose import protein, as well as reduction of cytosolic neutral invertase levels, appear to be the most promising targets for genetic manipulation. This offers a more directed improvement strategy than cumbersome gene-by-gene manipulation. The kinetic model can be viewed and interrogated on the World Wide Web at http://jjj.biochem.sun.ac.za. PMID:11513743

  8. Air pollution from biomass burning and asthma hospital admissions in a sugar cane plantation area in Brazil

    PubMed Central

    Arbex, Marcos Abdo; Martins, Lourdes Conceição; de Oliveira, Regiani Carvalho; Pereira, Luiz Alberto Amador; Arbex, Flávio Ferlin; Cançado, José Eduardo Delfini; Saldiva, Paulo Hilário Nascimento; Braga, Alfésio Luís Ferreira

    2007-01-01

    Objective To evaluate the association between the total suspended particles (TSPs) generated from preharvest sugar cane burning and hospital admission due to asthma (asthma hospital admissions) in the city of Araraquara. Design An ecological time?series study. Total daily records of asthma hospital admissions (ICD 10th J15) were obtained from one of the main hospitals in Araraquara, São Paulo State, Brazil, from 23 March 2003 to 27 July 2004. The daily concentration of TSP (?g/m3) was obtained using Handi?vol equipment (Energética, Brazil) placed in downtown Araraquara. The local airport provided the daily mean figures of temperature and humidity. The daily number of asthma hospital admissions was considered as the dependent variable in Poisson's regression models and the daily concentration of TSP was considered the independent variable. The generalised linear model with natural cubic spline was adopted to control for long?time trend. Linear terms were used for weather variables. Results TSP had an acute effect on asthma admissions, starting 1?day after TSP concentrations increased and remaining almost unchanged for the next four days. A 10??g/m3 increase in the 5?day moving average (lag1–5) of TSP concentrations was associated with an increase of 11.6% (95% CI 5.4 to 17.7) in asthma hospital admissions. Conclusion Increases in TSP concentrations were definitely associated with asthma hospital admissions in Araraquara and, despite using sugar cane alcohol to reduce air pollution from automotive sources in large Brazilian urban centres, the cities where sugar cane is harvested pay a high toll in terms of public health. PMID:17435205

  9. The impact of sugar cane-burning emissions on the respiratory system of children and the elderly.

    PubMed

    Cançado, José E D; Saldiva, Paulo H N; Pereira, Luiz A A; Lara, Luciene B L S; Artaxo, Paulo; Martinelli, Luiz A; Arbex, Marcos A; Zanobetti, Antonella; Braga, Alfesio L F

    2006-05-01

    We analyzed the influence of emissions from burning sugar cane on the respiratory system during almost 1 year in the city of Piracicaba in southeast Brazil. From April 1997 through March 1998, samples of inhalable particles were collected, separated into fine and coarse particulate mode, and analyzed for black carbon and tracer elements. At the same time, we examined daily records of children (<13 years of age) and elderly people (>64 years of age) admitted to the hospital because of respiratory diseases. Generalized linear models were adopted with natural cubic splines to control for season and linear terms to control for weather. Analyses were carried out for the entire period, as well as for burning and nonburning periods. Additional models were built using three factors obtained from factor analysis instead of particles or tracer elements. Increases of 10.2 microg/m3 in particlessugar cane burning (factor 1) were those most associated with both child and elderly respiratory admissions. Our results show the adverse impact of sugar cane burning emissions on the health of the population, reinforcing the need for public efforts to reduce and eventually eliminate this source of air pollution. PMID:16675427

  10. Spectrofotometric determination of copper in sugar cane spirit using biquinoline in the presence of ethanol and Triton X-100

    NASA Astrophysics Data System (ADS)

    do Nascimento Rocha, Sarah Adriana; Dantas, Alaílson Falcão; Jaeger, Helena Valli; Costa, Antônio Celso Spínola; Leão, Elsimar dos Santos; Gonçalves, Mara Rúbia

    2008-12-01

    The present paper proposes a method for molecular spectrophotometric determination of copper in sugar cane spirits. The copper(I) reacts with biquinoline forming a pink complex with maximum absorption at 545 nm. The reaction occurs in the presence of hydroxylamine, ethanol and Triton X-100 tensioative. Determination of copper is possible in a linear range 0.2-20.0 mg L -1 with a detection limit 0.05 mg L -1. The great advantages of the proposed methodology are the elimination of liquid-liquid extraction step and the use of toxic organics solvents, like dioxane, to dissolve the reagent.

  11. CO2 co-gasification of lower sulphur petroleum coke and sugar cane bagasse via TG-FTIR analysis technique.

    PubMed

    Edreis, Elbager M A; Luo, Guangqian; Li, Aijun; Chao, Chen; Hu, Hongyun; Zhang, Sen; Gui, Ben; Xiao, Li; Xu, Kai; Zhang, Pingan; Yao, Hong

    2013-05-01

    This study investigates the non-isothermal mechanism and kinetic behaviour of gasification of a lower sulphur petroleum coke, sugar cane bagasse and blends under carbon dioxide atmosphere conditions using the thermogravimetric analyser (TGA). The gas products were measured online with coupled Fourier transform infrared spectroscopy (FTIR). The achieved results explored that the sugar cane bagasse and blend gasification happened in two steps: at (<500 °C) the volatiles are released, and at (>700 °C) char gasification occurred, whereas the lower sulphur petroleum coke presented only one char gasification stage at (>800 °C). Significant interactions were observed in the whole process. Some solid-state mechanisms were studied by the Coats-Redfern method in order to observe the mechanisms responsible for the gasification of samples. The results show that the chemical first order reaction is the best responsible mechanism for whole process. The main released gases are CO2, CO, CH4, HCOOH, C6H5OH and CH3COOH. PMID:23567736

  12. Selection of sugar cane families by using BLUP and multi-diverse analyses for planting in the Brazilian savannah.

    PubMed

    Barbosa, M H P; Ferreira, A; Peixoto, L A; Resende, M D V; Nascimento, M; Silva, F F

    2014-01-01

    This study evaluated different strategies to select sugar cane families and obtain clones adapted to the conditions of the Brazilian savannah. Specifically, 7 experiments were conducted, with 10 full sib families, and 2 witnesses in common to all experiments, in each experiment. The plants were grown in random blocks, with witnesses in common (incomplete blocks), and 6 repetitions of each experiment. The data were analyzed through the methodology of mixed patterns, in which the matrices of kinship between the families were identified by the method of restricted maximum likelihood. The characteristics that were evaluated included soluble solids content (BRIX), BRIX ton/ha, average mass of a culm, number of culms/m, and tons of culms/ha. A multi-diverse alternative based on the analysis of groupings by using the UPGMA method was used to identify the most viable families for selection, when considering the genotypic effects on all characteristics. This method appeared suitable for the selection of families, with 5 family groups being formed. The families that formed Group 2 appeared superior to all other families for all the evaluated characteristics. It is recommended that the families in Group 2 are preferentially used in sugar cane improvement programs to obtain varieties optimally adapted to the conditions of the Brazilian savannah. PMID:24668636

  13. The hydrolysis of agro-industrial residues by holocellulose-degrading enzymes.

    PubMed

    Moreira, Leonora Rios de Souza; Ferreira, Gaspar Virgilio; Santos, Sheila Sousa Thurler; Ribeiro, Ana Paula Souza; Siqueira, Félix Gonçalves; Filho, Edivaldo Ximenes Ferreira

    2012-04-01

    Holocellulose structures from agro-industrial residues rely on main and side chain attacking enzymes with different specificities for complete hydrolysis. Combinations of crude enzymatic extracts from different fungal species, including Aspergillus terreus, Aspergillus oryzae, Aspergillus niger and Trichoderma longibrachiatum, were applied to sugar cane bagasse, banana stem and dirty cotton residue to investigate the hydrolysis of holocellulose structures. A. terreus and A. oryzae were the best producers of FPase and xylanase activities. A combination of A. terreus and A. oryzae extracts in a 50% proportion provided optimal hydrolysis of dirty cotton residue and banana stem. For the hydrolysis of sugar cane bagasse, the best results were obtained with samples only containing A. terreus crude extract. PMID:24031857

  14. Specific screening for color precursors and colorants in beet and cane sugar liquors in relation to model colorants using spectrofluorometry evaluated by HPLC and multiway data analysis.

    PubMed

    Baunsgaard, D; Nørgaard, L; Godshall, M A

    2001-04-01

    A comparison was made of the fluorophores in beet thick juice and cane final evaporator syrup, which are comparable in the production of cane and beet sugar; that is, both represent the final stage of syrup concentration prior to crystallization of sugar. To further elucidate the nature of the color components in cane and beet syrup, a series of model colorants was also prepared, consisting of mildly alkaline-degraded fructose and glucose and two Maillard type colorants, glucose--glycine and glucose--lysine. Fluorescence excitation--emission landscapes resolved into individual fluorescent components with PARAFAC modeling were used as a screening method for colorants, and the method was validated with size exclusion chromatography using a diode array UV--vis detector. Fluorophores from the model colorants were mainly located at visible wavelengths. An overall similarity in chromatograms and absorption spectra of the four model colorant samples indicated that the formation of darker color was the distinguishing characteristic, rather than different reaction products. The fluorophores obtained from the beet and cane syrups consisted of color precursor amino acids in the UV wavelength region. Tryptophan was found in both beet and cane syrups. Tyrosine as a fluorophore was resolved in only beet syrup, reflecting the higher levels of amino acids in beet processing. In the visible wavelength region, cane syrup colorant fluorophores were situated at higher wavelengths than those of beet syrup, indicating formation of darker colorants. A higher level of invert sugar in cane processing compared to beet processing was suggested as a possible explanation for the darker colorants. PMID:11308311

  15. Effect of Different Pretreatment of Sugar Cane Bagasse on Cellulase and Xylanases Production by the Mutant Penicillium echinulatum 9A02S1 Grown in Submerged Culture

    PubMed Central

    Camassola, Marli; Dillon, Aldo J. P.

    2014-01-01

    The main limitation to the industrial scale hydrolysis of cellulose is the cost of cellulase production. This study evaluated cellulase and xylanase enzyme production by the cellulolytic mutant Penicillium echinulatum 9A02S1 using pretreated sugar cane bagasse as a carbon source. Most cultures grown with pretreated bagasse showed similar enzymatic activities to or higher enzymatic activities than cultures grown with cellulose or untreated sugar cane bagasse. Higher filter paper activity (1.253 ± 0.147?U·mL?1) was detected in the medium on the sixth day of cultivation when bagasse samples were pretreated with sodium hydroxide, hydrogen peroxide, and anthraquinone. Endoglucanase enzyme production was also enhanced by pretreatment of the bagasse. Nine cultures grown with bagasse possessed higher ?-glucosidase activities on the sixth day than the culture grown with cellulose. The highest xylanase activity was observed in cultures with cellulose and with untreated sugar cane bagasse. These results indicate that pretreated sugar cane bagasse may be able to serve as a partial or total replacement for cellulose in submerged fermentation for cellulase production using P. echinulatum, which could potentially reduce future production costs of enzymatic complexes capable of hydrolyzing lignocellulosic residues to form fermented syrups. PMID:24967394

  16. Effect of different pretreatment of sugar cane bagasse on cellulase and xylanases production by the mutant Penicillium echinulatum 9A02S1 grown in submerged culture.

    PubMed

    Camassola, Marli; Dillon, Aldo J P

    2014-01-01

    The main limitation to the industrial scale hydrolysis of cellulose is the cost of cellulase production. This study evaluated cellulase and xylanase enzyme production by the cellulolytic mutant Penicillium echinulatum 9A02S1 using pretreated sugar cane bagasse as a carbon source. Most cultures grown with pretreated bagasse showed similar enzymatic activities to or higher enzymatic activities than cultures grown with cellulose or untreated sugar cane bagasse. Higher filter paper activity (1.253 ± 0.147 U · mL(-1)) was detected in the medium on the sixth day of cultivation when bagasse samples were pretreated with sodium hydroxide, hydrogen peroxide, and anthraquinone. Endoglucanase enzyme production was also enhanced by pretreatment of the bagasse. Nine cultures grown with bagasse possessed higher ? -glucosidase activities on the sixth day than the culture grown with cellulose. The highest xylanase activity was observed in cultures with cellulose and with untreated sugar cane bagasse. These results indicate that pretreated sugar cane bagasse may be able to serve as a partial or total replacement for cellulose in submerged fermentation for cellulase production using P. echinulatum, which could potentially reduce future production costs of enzymatic complexes capable of hydrolyzing lignocellulosic residues to form fermented syrups. PMID:24967394

  17. Changes in the physicochemical characteristics, including flavour components and Maillard reaction products, of non-centrifugal cane brown sugar during storage.

    PubMed

    Asikin, Yonathan; Kamiya, Asahiro; Mizu, Masami; Takara, Kensaku; Tamaki, Hajime; Wada, Koji

    2014-04-15

    Changes in the quality attributes of non-centrifugal cane brown sugar represented by physicochemical characteristics as well as flavour components and Maillard reaction products (MRPs) were monitored every 3 months over 1 year of storage. Stored cane brown sugar became darker, and its moisture content and water activity (a(w)) increased during storage. Fructose and glucose levels decreased as non-enzymatic browning via the Maillard reaction occurred in the stored sample, and a similar trend was also discovered in aconitic and acetic acids. Stored cane brown sugar lost its acidic and sulfuric odours (58.70-39.35% and 1.85-0.08%, respectively); subsequently, the nutty and roasted aroma increased from 26.52% to 38.59% due to the volatile MRPs. The browning rate of stored cane brown sugar was positively associated with the development of volatile MRPs (Pearson's coefficient = 0.860), whereas the amount of 3-deoxyglucosone, an intermediate product of the Maillard reaction, had a lower association with the brown colour due to its relatively slow degradation rate. PMID:24295691

  18. 76 FR 20305 - USDA Reassigns Domestic Cane Sugar Allotments and Increases the Fiscal Year 2011 Raw Sugar Tariff...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-12

    ... STRV; Texas, 173,016 STRV; and Hawaii, 283,216 STRV. The FY 2011 sugar marketing allotment program will.... Karis T. Gutter, Acting Under Secretary, Farm and Foreign Agricultural Services. BILLING CODE 3410-10-P...

  19. 77 FR 57180 - Fiscal Year 2013 Tariff-rate Quota Allocations for Raw Cane Sugar, Refined and Specialty Sugar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-17

    ... Trade Representative in Presidential Proclamation 6763 (60 FR 1007). On September 10, 2012, the... establishment of the in-quota quantity of the FY 2013 refined sugar TRQ at 117,254 MTRV for which the...

  20. 76 FR 50285 - Fiscal Year 2012 Tariff-Rate Quota Allocations for Raw Cane Sugar, Refined and Specialty Sugar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-12

    ... under Presidential Proclamation 6763 (60 FR 1007). On August 1, 2011, the Secretary of Agriculture... FY 2012 refined sugar TRQ at 112,718 MTRV for which the sucrose content, by weight in the dry...

  1. A preliminary characterization of the mutagenicity of atmospheric particulate matter collected during sugar cane harvesting using the Salmonella/microsome microsuspension assay.

    PubMed

    de Aragão Umbuzeiro, Gisela; Franco, Alexandre; Magalhães, Dulce; de Castro, Francisco José Viana; Kummrow, Fábio; Rech, Célia Maria; Rothschild Franco de Carvalho, Lilian; de Castro Vasconcellos, Pérola

    2008-05-01

    During sugar cane harvesting season, which occurs from May to November of each year, the crops are burnt, cut, and transported to the mills. There are reports showing that mutagenic activity and PAH content increase during harvesting season in some areas of São Paulo State in comparison with nonharvesting periods. The objective of this work was to preliminarily characterize the mutagenic activity of the total organic extracts as well as corresponding organic fractions of airborne particulate matter (PM) collected twice from two cities, Araraquara (ARQ) and Piracicaba (PRB), during sugar cane harvesting season using the Salmonella/microsome microssuspension assay. One sample collected in São Paulo metropolitan area was also included. The mutagenicity of the total extracts ranged from 55 to 320 revertants per cubic meter without the addition of S9 and from not detected to 57 revertants per cubic meter in the presence of S9 in areas with sugar cane plantations. Of the three fractions analyzed, the most polar ones (nitro and oxy) were the most potent. A comparison of the response of TA98 with YG1041 and the increased potencies without S9 indicated that nitro compounds are causing the observed effect. More studies are necessary to verify the sources of the mutagenic activity such as burning of vegetal biomass and combustion of heavy duty vehicles used to transport the sugar cane to the mills. The Salmonella/microsome assay can be an important tool to monitor the atmosphere for mutagenicity during sugar cane harvesting season. PMID:18288717

  2. Radiation and NRSP effect on protein, filtration efficiency and crude fiber degradation after sugar cane bagasse fermentation by mushroom fungi

    NASA Astrophysics Data System (ADS)

    Shin, Hang-Sik; Lee, Ji-Hoon; Hwang, Eung-Ju; Shon, Jong-Sik; Kim, Gye-Nam; Matsuhashi, Shinpei; Kume, Tamikazu

    1998-11-01

    The upgrading of sugar cane bagasse with natural rubber waste by irradiation and three mushroom fungi was studied in order to produce economical animal feed and mushrooms. The protein concentrations changed a little at 0, 1% of NRSP but greatly increased at 5% NRSP concentration with irradiation and nonirradiation in liquid fermentation. The filtration rate decreased at 5% NRSP concentration after liquid fermentation but it increased by 2.7, 10.2, 11.1 times with irradiation for P. sajor-caju, C. phlytidosprorus and P. flavellatus. The amounts of crude fiber were decreased due to the irradiation and the different concentration of NRSP after 42 days of solid fermentation by P. sajor-caju.

  3. Draw-fill batch culture mode for production of xylanases by Cellulomonas flavigena on sugar cane bagasse.

    PubMed

    Vega-Estrada, J; Flores-Cotera, L B; Santiago, A; Magaña-Plaza, I; Montes-Horcasitas, C

    2002-03-01

    Draw-fill culture was evaluated as a method for xylanase production by Cellulomonas flavigena on sugar cane bagasse. Specific xylanase activity and volumetric xylanase activities were measured by harvesting 50%, 55%, 60% and 70% of fermented broth at the end of each subculture. Maximum specific (64 IU mg(-1) protein) and volumetric (166 IU ml(-1)) xylanase activities were obtained by harvesting 50-55% of broth. Values were 3.4 and 3.8 times greater than those obtained in batch cultures carried out under the same conditions. Enzyme productivity of 4.2 IU ml(-1) h(-1) was significantly greater than that obtained in continuous cultures (2.4 IU ml(-1) h(-1)) (P<0.05). PMID:11954788

  4. Structural evaluation of sugar cane bagasse steam pretreated in the presence of CO2 and SO2

    PubMed Central

    2012-01-01

    Background Previous studies on the use of SO2 and CO2 as impregnating agent for sugar cane bagasse steam treatment showed comparative and promising results concerning the cellulose enzymatic hydrolysis and the low formation of the inhibitors furfural and hydroxymethylfurfural for the use of CO2 at 205°C/15 min or SO2 at 190°C/5 min. In the present study sugar cane bagasse materials pretreated as aforementioned were analyzed by scanning and transmission electron microscopy (SEM and TEM), X-Ray Diffraction (XRD) and Infrared (FTIR spectroscopy) aiming a better understanding of the structural and chemical changes undergone by the pretreated materials. Results SEM and TEM data showed that the structural modifications undergone by the pretreatment with CO2 were less pronounced in comparison to that using SO2, which can be directly related to the combined severity of each pretreatment. According to XRD data, untreated bagasse showed, as expected, a lower crystallinity index (CI = 48.0%) when compared to pretreated samples with SO2 (CI = 65.5%) or CO2 (CI = 56.4%), due to the hemicellulose removal of 68.3% and 40.5%, respectively. FTIR spectroscopy supported SEM, TEM and XRD results, revealing a more extensive action of SO2. Conclusions The SEM, TEM, XRD and FTIR spectroscopy techniques used in this work contributed to structural and chemical analysis of the untreated and pretreated bagasse. The images from SEM and TEM can be related to the severity of SO2 pretreatment, which is almost twice higher. The crystallinity index values obtained from XRD showed that pretreated materials have higher values when compared with untreated material, due to the partial removal of hemicellulose after pretreatment. FTIR spectroscopy supported SEM, TEM and XRD results. CO2 can actually be used as impregnating agent for steam pretreatment, although the present study confirmed a more extensive action of SO2. PMID:22616648

  5. Compressive strength and interfacial transition zone of sugar cane bagasse ash concrete: A comparison to the established pozzolans

    NASA Astrophysics Data System (ADS)

    Hussein, Asma Abd Elhameed; Shafiq, Nasir; Nuruddin, Muhd Fadhil

    2015-05-01

    Agricultural and industrial by-products are commonly used in concrete production as cement replacement materials (CRMs) or as admixtures to enhance both fresh and hardened properties of concrete as well as to save the environment from the negative effects caused by their disposal. Sugar Cane Bagasse Ash (SCBA) is one of the promising CRMs, it is used as a partial replacement of cement for producing concrete; properties of such concrete depend on the chemical composition, fineness, and burning temperature of SCBA. Approximately 1500 Million tons of sugarcane are annually produced over all the world which leave about 40-45% bagasse after juice crushing for sugar industry giving an average annual production of about 600 Million tons of bagasse as a waste material. This paper presents some findings on the effect of SCBA on workability, compressive strength and microstructure of interfacial zone of concrete and its performance is compared to some of the established CRMs namely Densified Silica Fume, Fly Ash and Microwave Incinerated Rice Husk Ash.

  6. Analysis of Mannitol, as Tracer of Bacterial Infections in Cane and Beet Sugar Factories

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mannitol, formed mainly by Leuconostoc mesenteroides bacteria, is a sensitive marker of sugarcane and sugarbeet deterioration that can predict multiple processing problems. The delivery of consignments of deteriorated sugarcane or sugar beets to factories can detrimentally affect multiple process un...

  7. Analysis of Mannitol, as Tracer of Bacterial Infections in Cane and Beet Sugar Factories

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mannitol, formed mainly by Leuconostoc mesenteroides bacteria, is a sensitive marker of sugarcane and sugarbeet deterioration that can predict multiple processing problems. The delivery of consignments of deteriorated sugarcane or sugar beets to factories can detrimentally affect multiple process u...

  8. Further studies on a new pathway of photosynthetic carbon dioxide fixation in sugar-cane and its occurrence in other plant species

    PubMed Central

    Hatch, M. D.; Slack, C. R.; Johnson, Hilary S.

    1967-01-01

    1. The pathway of photosynthesis in sugar-cane, which gives most of the radio-activity fixed during short periods in 14CO2 in C-4 of oxaloacetate, malate and aspartate, was examined under varied conditions. 2. The pattern of labelling was essentially the same with leaves of different ages and with leaves equilibrated at carbon dioxide concentrations in the range 0–3·8% (v/v) and light-intensities in the range 1400–9000ft.-candles before adding 14CO2. 3. Radioactive products were examined after exposing leaves of 33 different plant species to 14CO2 for 4sec. under standard conditions. 4. A labelling pattern typical of sugar-cane was found in several species of Gramineae but not in others. Of 16 species from other Families only a species of Cyperaceae contained a large proportion of the fixed radioactivity in oxaloacetate, malate and aspartate. PMID:6029601

  9. Cellulase production by Penicillium funiculosum and its application in the hydrolysis of sugar cane bagasse for second generation ethanol production by fed batch operation.

    PubMed

    Maeda, Roberto Nobuyuki; Barcelos, Carolina Araújo; Santa Anna, Lídia Maria Melo; Pereira, Nei

    2013-01-10

    This study aimed to produce a cellulase blend and to evaluate its application in a simultaneous saccharification and fermentation (SSF) process for second generation ethanol production from sugar cane bagasse. The sugar cane bagasse was subjected to pretreatments (diluted acid and alkaline), as for disorganizing the ligocellulosic complex, and making the cellulose component more amenable to enzymatic hydrolysis. The residual solid fraction was named sugar cane bagasse partially delignified cellulignin (PDC), and was used for enzyme production and ethanol fermentation. The enzyme production was performed in a bioreactor with two inoculum concentrations (5 and 10% v/v). The fermentation inoculated with higher inoculum size reduced the time for maximum enzyme production (from 72 to 48). The enzyme extract was concentrated using tangential ultrafiltration in hollow fiber membranes, and the produced cellulase blend was evaluated for its stability at 37 °C, operation temperature of the simultaneous SSF process, and at 50 °C, optimum temperature of cellulase blend activity. The cellulolytic preparation was stable for at least 300 h at both 37 °C and 50 °C. The ethanol production was carried out by PDC fed-batch SSF process, using the onsite cellulase blend. The feeding strategy circumvented the classic problems of diffusion limitations by diminishing the presence of a high solid:liquid ratio at any time, resulting in high ethanol concentration at the end of the process (100 g/L), which corresponded to a fermentation efficiency of 78% of the maximum obtainable theoretically. The experimental results led to the ratio of 380 L of ethanol per ton of sugar cane bagasse PDC. PMID:23123260

  10. Complete Genome Sequence of the Sugar Cane Endophyte Pseudomonas aurantiaca PB-St2, a Disease-Suppressive Bacterium with Antifungal Activity toward the Plant Pathogen Colletotrichum falcatum.

    PubMed

    Mehnaz, Samina; Bauer, Judith S; Gross, Harald

    2014-01-01

    The endophytic bacterium Pseudomonas aurantiaca PB-St2 exhibits antifungal activity and represents a biocontrol agent to suppress red rot disease of sugar cane. Here, we report the completely sequenced 6.6-Mb genome of P. aurantiaca PB-St2. The sequence contains a repertoire of biosynthetic genes for secondary metabolites that putatively contribute to its antagonistic activity and its plant-microbe interactions. PMID:24459254

  11. Complete Genome Sequence of the Sugar Cane Endophyte Pseudomonas aurantiaca PB-St2, a Disease-Suppressive Bacterium with Antifungal Activity toward the Plant Pathogen Colletotrichum falcatum

    PubMed Central

    Bauer, Judith S.

    2014-01-01

    The endophytic bacterium Pseudomonas aurantiaca PB-St2 exhibits antifungal activity and represents a biocontrol agent to suppress red rot disease of sugar cane. Here, we report the completely sequenced 6.6-Mb genome of P. aurantiaca PB-St2. The sequence contains a repertoire of biosynthetic genes for secondary metabolites that putatively contribute to its antagonistic activity and its plant-microbe interactions. PMID:24459254

  12. An approach to the utilisation of CO2 as impregnating agent in steam pretreatment of sugar cane bagasse and leaves for ethanol production

    PubMed Central

    2010-01-01

    Background The conditions for steam pretreatment of sugar cane bagasse and leaves were studied using CO2 as an impregnating agent. The following conditions were investigated: time (5 to 15 min) and temperature (190 to 220°C). The pretreatment was assessed in terms of glucose and xylose yields after enzymatic hydrolysis and inhibitor formation (furfural and hydroxymethylfurfural) in the pretreatment. Results from pretreatment using SO2 as impregnating agent was used as reference. Results For sugar cane bagasse, the highest glucose yield (86.6% of theoretical) was obtained after pretreatment at 205°C for 15 min. For sugar cane leaves the highest glucose yield (97.2% of theoretical) was obtained after pretreatment at 220°C for 5 min. The reference pretreatment, using impregnation with SO2 and performed at 190°C for 5 min, resulted in an overall glucose yield of 79.7% and 91.9% for bagasse and leaves, respectively. Conclusions Comparable pretreatment performance was obtained with CO2 as compared to when SO2 is used, although higher temperature and pressure were needed. The results are encouraging as some characteristics of CO2 are very attractive, such as high availability, low cost, low toxicity, low corrosivity and low occupational risk. PMID:20384996

  13. Isolation and enzymic properties of levansucrase secreted by Acetobacter diazotrophicus SRT4, a bacterium associated with sugar cane.

    PubMed Central

    Hernandez, L; Arrieta, J; Menendez, C; Vazquez, R; Coego, A; Suarez, V; Selman, G; Petit-Glatron, M F; Chambert, R

    1995-01-01

    Acetobacter diazotrophicus, a nitrogen-fixing bacterium associated with sugar cane, secretes a levansucrase (sucrose-2,6-beta-D-fructan 6-beta-D-fructosyltransferase; EC 2.4.1.10). This enzyme is constitutively expressed and represents more than 70% of the total proteins secreted by strain SRT4. The purified protein consists of a single 58 kDa polypeptide with an isoelectric point of 5.5. Its activity is optimal at pH 5.0. It catalyses transfructosylation from sucrose to a variety of acceptors including water (sucrose hydrolysis), glucose (exchange reaction), fructan (polymerase reaction) and sucrose (oligofructoside synthesis). In vivo the polymerase activity leads to synthesis of a high-molecular-mass fructan of the levan type. A. diazotrophicus levansucrase catalyses transfructosylation via a Ping Pong mechanism involving the formation of a transient fructosyl-enzyme intermediate. The catalytic mechanism is very similar to that of Bacillus subtilis levansucrase. The kinetic parameters of the two enzymes are of the same order of magnitude. The main difference between the two enzyme specificities is the high yield of oligofructoside, particularly 1-kestotriose and kestotetraose, accumulated by A. diazotrophicus levansucrase during sucrose transformation. We discuss the hypothesis that these catalytic features may serve the different biological functions of each enzyme. Images Figure 6 Figure 7 PMID:7619044

  14. Influence of sugar cane vinasse on the sorption and degradation of herbicides in soil under controlled conditions.

    PubMed

    Lourencetti, Carolina; De Marchi, Mary R R; Ribeiro, Maria L

    2012-01-01

    This study reports the influence of sugar cane vinasse on the persistence, sorption and leaching potential of diuron (3-(3,4-dichlorophenyl)-1,1-dimethylurea), hexazinone (3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4-dione) and tebuthiuron (1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea) in both a clay and sandy soil from a tropical area of Brazil. The experiments were conducted out under controlled laboratory conditions. The addition of sugarcane vinasse to soil influenced the persistence and sorption of the herbicides in both the studied clay and sandy soils, with a considerable decrease in the diuron DT?? values in clay soil. The Ground Water Ubiquity Score (GUS) Index classifies the herbicides as leachers in both soils and treatments, with the exception of diuron, which is classified as a non-leacher in clay soil-vinasse and as a transient herbicide in sandy soil. These results suggest that special attention should be given to areas such as those where the sandy soil was collected in this study, which is a recharge area of the Guarani Aquifer and is likely to experience groundwater contamination due to the high leaching potential of the applied pesticides. PMID:22938579

  15. Wickerhamiella siamensis f.a., sp. nov., an endophytic and epiphytic yeast species isolated from sugar cane leaf.

    PubMed

    Khunnamwong, Pannida; Surussawadee, Janjira; Jindamorakot, Sasitorn; Limtong, Savitree

    2014-11-01

    Six strains representing a novel yeast species were isolated from tissue (DMKU-SE106(T), DMKU-SE110, DMKU-SE112 and DMKU-SE132) and the external surface (DMKU-SP335 and DMKU-SP406) of sugar cane leaves collected in Thailand. On the basis of morphological, biochemical, physiological and chemotaxonomic characteristics, and sequence analysis of the D1/D2 region of the LSU rRNA gene and the internal transcribed spacer (ITS) region, the six strains were found to represent a single novel species of the genus Wickerhamiella although the formation of ascospores was not observed. The sequences of the D1/D2 region of the LSU rRNA gene and ITS region of the six strains differed from each other by 0-2 and 2-3 nt substitutions, respectively. The novel species was related most closely to Candida infanticola but with 4.5-4.6% nucleotide substitutions in the D1/D2 region of the LSU rRNA gene and 6.6-7.1% nucleotide substitutions in the ITS region. The name Wickerhamiella siamensis f.a., sp. nov. is proposed. The type strain is DMKU-SE106(T) (?=BCC 61185(T)?=NBRC 109697(T)?=CBS 13331(T)). PMID:25168613

  16. OLIGOSACCHARIDES IN CANE AND THEIR FORMATION ON CANE DETERIORATION

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Cane deterioration in the field, factory storage pile, or during factory milling processes has become a major technical concern in recent years, especially in those areas where mechanical harvesting of billeted sugar cane has increased. Not all deterioration products advocated as cane deterioratio...

  17. Use of the UASB reactor for the anaerobic treatment of stillage from sugar cane molasses

    SciTech Connect

    Sanchez Riera, F.; Cordoba, P.; Sineriz, F.

    1985-12-01

    The feasibility of applying the UASB concept for the anaerobic treatment of stillage of distilleries in the sugar producing area of Argentina was subject to study. Results obtained in a 100-l UASB reactor treating stillages with COD values between 35 and 100 g COD/l are presented. Loading rates of up to 24 g COD/l/day, were applied with an average COD removal of 75% and a biogas production of more than 9 l/l/day, with an average methane content of 58%. The settling velocity distribution of sludge particles would indicate a good formation of biomass pellets. System interruptions of months without feed and at ambient temperature (20-24/sup 0/C) were well tolerated.

  18. Production of polyhydroxyalkanoates from fermented sugar cane molasses by a mixed culture enriched in glycogen accumulating organisms.

    PubMed

    Bengtsson, Simon; Pisco, Ana R; Reis, Maria A M; Lemos, Paulo C

    2010-02-01

    Batch production of polyhydroxyalkanoates (PHAs) under aerobic conditions by an open mixed culture enriched in glycogen accumulating organisms (GAOs) with fermented sugar cane molasses as substrate was studied. The produced polymers contained five types of monomers, namely 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 3-hydroxy-2-methylbutyrate (3H2MB), 3-hydroxy-2-methylvalerate (3H2MV) and the medium chain length monomer 3-hydroxyhexanoate (3HHx). With fermented molasses as substrate, PHA was produced under concurrent consumption of stored glycogen with yields of 0.47-0.66 C-mol PHA per C-mol of total carbon substrate and with rates up to 0.65 C-mol/C-molX h. In order to investigate the role of glycogen during aerobic PHA accumulation in GAOs, synthetic single volatile fatty acids (VFAs) were used as substrates and it was found that the fate of glycogen was dependent on the type of VFA being consumed. Aerobic PHA accumulation occurred under concurrent glycogen consumption with acetate as substrate and under minor concurrent glycogen production with propionate as substrate. With butyrate and valerate as substrates, PHA accumulation occurred with the glycogen pool unaffected. The composition of the PHA was dependent on the VFA composition of the fermented molasses and was 56-70 mol-% 3HB, 13-43 mol-% 3HV, 1-23 mol-% 3HHx and 0-2 mol-% 3H2MB and 3H2MV. The high polymer yields and production rates suggest that enrichment of GAOs can be a fruitful strategy for mixed culture production of PHA from waste substrates. PMID:19958801

  19. Quantification of natural populations of Gluconacetobacter diazotrophicus and Herbaspirillum spp. In sugar cane (Saccharum spp.) Using differente polyclonal antibodies

    PubMed Central

    da Silva-Froufe, Lúcia Gracinda; Boddey, Robert Michael; Reis, Veronica Massena

    2009-01-01

    The species Gluconacetobacter diazotrophicus, Herbaspirillum seropedicae and H. rubrisubalbicans are endophytic N2-fixing [diazotrophic] bacteria which colonise not only roots, but also the aerial tissue of sugar cane. However, the technique most commonly used to quantify the populations of these microbes in plants is by culturing serial dilutions of macerates of plant tissues in N free semi-solid media which are only semi-selective for the species/genera [the Most Probable Number (MPN) Technique] and each culture must be further subjected to several tests to identify the isolates at the species level. The use of species-specific polyclonal antibodies with the indirect ELISA (enzyme-linked immunosorbent assay) can be an alternative which is rapid and specific to quantify these populations of bacteria. This study was performed to investigate the viability of adapting the indirect ELISA technique to quantify individually the populations of these three species of diazotroph within the root and shoot tissues of sugarcane. The results showed that species-specific polyclonal antibodies could be obtained by purifying sera in protein-A columns which removed non-specific immuno-globulins. It was possible to quantify the three bacterial species in the Brazilian sugarcane variety SP 70-1143 in numbers above 105 cells per g fresh weight in roots, rhizomes and leaves. The numbers of the different bacterial species evaluated using the ELISA technique were found to be higher than when the same populations were evaluated using the MPN technique, reaching 1400 times greater for G. diazotrophicus and 225 times greater for Herbaspirillum spp. These results constitute the first quantification of Herbaspirillum using immunological techniques. PMID:24031435

  20. Combined removal of BTEX in air stream by using mixture of sugar cane bagasse, compost and GAC as biofilter media.

    PubMed

    Mathur, Anil K; Majumder, C B; Chatterjee, Shamba

    2007-09-01

    Biofiltration of air stream containing mixture of benzene, toluene, ethyl benzene and o-xylene (BTEX) has been studied in a lab-scale biofilter packed with a mixture of compost, sugar cane bagasse and granulated activated carbon (GAC) in the ratio 55:30:15 by weight. Microbial acclimation was achieved in 30 days by exposing the system to average BTEX inlet concentration of 0.4194 gm(-3) at an empty bed residence time (EBRT) of 2.3 min. Biofilter achieved maximum removal efficiency more than 99% of all four compounds for throughout its operation at an EBRT of 2.3 min for an inlet concentration of 0.681 gm(-3), which is quite significance than the values reported in the literature. The results indicate that when the influent BTEX loadings were less than 68 gm(-3)h(-1) in the biofilter, nearly 100% removal could be achieved. A maximum elimination capacity (EC) of 83.65 gm(-3)h(-1) of the biofilter was obtained at inlet BTEX load of 126.5 gm(-3)h(-1) in phase IV. Elimination capacities of BTEX increased with the increase in influent VOC loading, but an opposite trend was observed for the removal efficiency. The production of CO(2) in each phase (gm(-3)h(-1)) was also observed at steady state (i.e. at maximum removal efficiency). Moreover, the high concentrations of nitrogen in the nutrient solution may adversely affect the microbial activity possibly due to the presence of high salt concentrations. Furthermore, an attempt was also made to isolate the most profusely grown BTEX-degrading strain. A Gram-positive strain had a high BTEX-degrading activity and was identified as Bacillus sphaericus by taxonomical analysis, biochemical tests and 16S rDNA gene analysis methods. PMID:17397996

  1. COMPARATIVE MACROSCOPIC STUDY OF OSTEOCHONDRAL DEFECTS PRODUCED IN FEMURS OF RABBITS REPAIRED WITH BIOPOLYMER GEL CANE SUGAR

    PubMed Central

    de Albuquerque, Paulo Cezar Vidal Carneiro; dos Santos, Saulo Monteiro; de Andrade Aguiar, José Lamartine; Filho, Nicodemus Pontes; de Mello, Roberto José Vieira; Costa, Mariana Lúcia Correia Ramos; de Albuquerque Olbertz, Clarissa Miranda Carneiro; de Souza Almeida, Tarciana Mendonça; da Silva Santos, Alessandro Henrique; da Silva, Joacil Carlos

    2015-01-01

    Objective: To study the surface, coloring, consistency, continuity and healing of osteochondral defects produced in the femoral condyles of rabbits and filled with sugar cane biopolymer gel (SCBG), after 90, 120 and 180 days, and in comparison with a control group. Method: Sixteen adult New Zealand white rabbits aged 6 to 7 months, weighing between 2 and 2.5 kg and without locomotor system abnormalities were studied. In all the animals, a defect was made in the femoral condyles of the right and left knees, measuring 3.2 mm in diameter and 4 mm in depth, using a trephine. The animals were divided into two groups: study group formed by the right knees, in which the medial and lateral condyles received implants of SCBG; and control group formed by the left knees, in which the medial and lateral condyles were allowed to heal naturally. The knees were assessed 90, 120 and 180 days after the operation. After the animals had been sacrificed, the anatomical specimens were resected and placed in Bouin's solution. They were then photographed with a Nikon Coolpix 5400® coupled to a Nikon SM2800® stereoscopic loupe, to analyze the surface, coloring, consistency, continuity and healing. Results: The results were evaluated using the chi-square test. There were no significant differences in the macroscopic assessments of healing between the study and control groups. Conclusion: With regard to the surface, coloring, consistency, continuity and healing of the defects, the macroscopic appearance of the tissue repaired with SCBG was similar to that of the control group.

  2. Optimization of process parameters for ethanol production from sugar cane molasses by Zymomonas mobilis using response surface methodology and genetic algorithm.

    PubMed

    Maiti, Bodhisatta; Rathore, Ankita; Srivastava, Saurav; Shekhawat, Mitali; Srivastava, Pradeep

    2011-04-01

    Ethanol is a potential energy source and its production from renewable biomass has gained lot of popularity. There has been worldwide research to produce ethanol from regional inexpensive substrates. The present study deals with the optimization of process parameters (viz. temperature, pH, initial total reducing sugar (TRS) concentration in sugar cane molasses and fermentation time) for ethanol production from sugar cane molasses by Zymomonas mobilis using Box-Behnken experimental design and genetic algorithm (GA). An empirical model was developed through response surface methodology to analyze the effects of the process parameters on ethanol production. The data obtained after performing the experiments based on statistical design was utilized for regression analysis and analysis of variance studies. The regression equation obtained after regression analysis was used as a fitness function for the genetic algorithm. The GA optimization technique predicted a maximum ethanol yield of 59.59 g/L at temperature 31 °C, pH 5.13, initial TRS concentration 216 g/L and fermentation time 44 h. The maximum experimental ethanol yield obtained after applying GA was 58.4 g/L, which was in close agreement with the predicted value. PMID:21336926

  3. Enzymatic digestion of alkaline-sulfite pretreated sugar cane bagasse and its correlation with the chemical and structural changes occurring during the pretreatment step.

    PubMed

    Mendes, Fernanda M; Laurito, Debora F; Bazzeggio, Mariana; Ferraz, André; Milagres, Adriane M F

    2013-01-01

    Sugar cane bagasse is recalcitrant to enzymatic digestion, which hinders the efficient conversion of its polysaccharides into fermentable sugars. Alkaline-sulfite pretreatment was used to overcome the sugar cane bagasse recalcitrance. Chemical and structural changes that occurred during the pretreatment were correlated with the efficiency of the enzymatic digestion of the polysaccharides. The first 30 min of pretreatment, which removed approximately half of the initial lignin and 30% of hemicellulose seemed responsible for a significant enhancement of the cellulose conversion level, which reached 64%. After the first 30 min of pretreatment, delignification increased slightly, and hemicellulose removal was not enhanced; however, acid groups continued to be introduced into the residual lignin. Water retention values were 145% to the untreated bagasse and 210% to the bagasse pretreated for 120 min and fiber widths increased from 10.4 to 30 ?m, respectively. These changes were responsible for an additional increase in the efficiency of enzymatic hydrolysis of the cellulose, which reached 92% with the 120 min pretreated sample. PMID:23666781

  4. Optimization of biodegradable plastic production on sugar cane molasses in Enterobacter sp. SEL2.

    PubMed

    Naheed, Nighat; Jamil, Nazia

    2014-01-01

    Contaminated environments have a large number of bacteria which can accumulate PHA as their energy reserves. Out of 54 isolated bacterial strains from three groups of contaminated sites 48 were found PHA positive. The sites were grouped on the basis of the type of carbon sources i.e. sugars, fatty acids and much diverse type. Strains MFD5, MFD11, UML3, USL2, SEL2, SEL3, SEL10 and PFW1 produced 69.9 ± 0.29, 75.27 ± 0.45, 65.43 ± 0.1, 72.54 ± 0.27, 76.61 ± 0.28, 61.81 ± 0.05, 71.16 ± 0.09 and 74.92 ± 0.5 percent of PHA to their constant cell weight (CCW) respectively in PHA detection media supplemented with 2% glucose. Molasses, whey, crumbs hydrolysate and palm oil were checked as inexpensive carbon sources. Molasses alone could supply the required nutrients for growth and PHA production. Strain SEL2 produced 47.36 ± 0.45% PHA using 2% molasses at 37 °C and pH 7.0. Upon production optimization the best accumulation (80.95 ± 0.01%) was observed in PHA detection media with 0.2% nitrogen source, 3% molasses, pH 5.0 and 37 °C by the strain SEL2. The overall effect of the presence of increased molasses concentration in the media was positive it increased the accumulation period till 72 h. Enterobacter sp. SEL2 (JF901810) is first time being reported for PHA production. PMID:25242924

  5. Optimization of biodegradable plastic production on sugar cane molasses in Enterobacter sp. SEL2

    PubMed Central

    Naheed, Nighat; Jamil, Nazia

    2014-01-01

    Contaminated environments have a large number of bacteria which can accumulate PHA as their energy reserves. Out of 54 isolated bacterial strains from three groups of contaminated sites 48 were found PHA positive. The sites were grouped on the basis of the type of carbon sources i.e. sugars, fatty acids and much diverse type. Strains MFD5, MFD11, UML3, USL2, SEL2, SEL3, SEL10 and PFW1 produced 69.9 ± 0.29, 75.27 ± 0.45, 65.43 ± 0.1, 72.54 ± 0.27, 76.61 ± 0.28, 61.81 ± 0.05, 71.16 ± 0.09 and 74.92 ± 0.5 percent of PHA to their constant cell weight (CCW) respectively in PHA detection media supplemented with 2% glucose. Molasses, whey, crumbs hydrolysate and palm oil were checked as inexpensive carbon sources. Molasses alone could supply the required nutrients for growth and PHA production. Strain SEL2 produced 47.36 ± 0.45% PHA using 2% molasses at 37 °C and pH 7.0. Upon production optimization the best accumulation (80.95 ± 0.01%) was observed in PHA detection media with 0.2% nitrogen source, 3% molasses, pH 5.0 and 37 °C by the strain SEL2. The overall effect of the presence of increased molasses concentration in the media was positive it increased the accumulation period till 72 h. Enterobacter sp. SEL2 (JF901810) is first time being reported for PHA production. PMID:25242924

  6. Diurnal and nocturnal measurements of PAH, nitro-PAH, and oxy-PAH compounds in atmospheric particulate matter of a sugar cane burning region

    NASA Astrophysics Data System (ADS)

    Souza, Kely F.; Carvalho, Lilian R. F.; Allen, Andrew G.; Cardoso, Arnaldo A.

    2014-02-01

    Polycyclic aromatic hydrocarbons (PAHs), nitro-PAHs, and oxy-PAHs were studied in the atmospheric particulate matter of a subtropical rural region (São Paulo State, Brazil) affected by emissions from sugar cane burning. Diurnal and nocturnal samples were collected from May to June of 2010. In general, average PAH concentrations were significantly higher at night, suggesting that the compounds were predominantly emitted to the atmosphere during biomass burning (which was mainly performed at night). The maximum average PAH concentration was found for benzo[b]fluoranthene at night (2.9 ± 5.4 ng m-3). Among the nitro-PAH compounds, the highest average concentrations were obtained for 9-nitrophenanthrene in diurnal and nocturnal samples (1.5 ± 1.2 and 1.3 ± 2.1 ng m-3, respectively). In contrast to the PAH and nitro-PAH compounds, the oxy-PAHs could not be directly associated with sugar cane burning. The most abundant oxy-PAH compound was benzanthrone (1.6 ± 1.3 ng m-3) at night, followed by 9,10-anthraquinone (1.1 ± 0.9 ng m-3) and 9-fluorenone (0.4 ± 0.1 ng m-3) during the day. A correlation matrix was used to explore the origins of the different compounds. The data suggested that during the daytime, direct emissions (mainly in vehicle exhaust) contributed to the presence of PAHs, nitro-PAHs, and oxy-PAHs in air. Photochemical production also appeared to be a source of the majority of nitro-PAHs and oxy-PAHs, while photolysis could have contributed to removal of the nitro-PAHs during the daytime. At night, sugar cane burning emissions were the primary source of the PAHs and nitro-PAHs, with additional sources also contributing to the levels of oxy-PAHs in the atmosphere.

  7. Agro-industry sugarcane residues disposal: the trends of their conversion into energy carriers in Cuba.

    PubMed

    Alonso Pippo, W; Garzone, P; Cornacchia, G

    2007-01-01

    The goal of the present work was to carry out a review of the disposal practices for the agro-industry's sugarcane residue and the trends of energy use in Cuba. The lack of an alternative energy carrier to electricity with storage capability for use in off-season has to date been an unsolvable question. The improvement of cogeneration capacity via implementation of CEST or BIG/GTCC and the barriers for their implementation, the introduction of a medium size (3 ton/h) fast pyrolysis module (FPM3) as a solution for off-season energy demand in the agro-industry, and an assessment of the energy required to do so, were also analyzed. Bio-oil production from bagasse and sugarcane agriculture residues (SCAR) and their particularities at the sugar mill are treated. The influence of sugar facility production process configuration is analyzed. The fast pyrolysis products and the trends of their end uses in Cuba are presented. The production cost of a ton of Bio-oil for FPM3 conditions was calculated at 155 USD/ton and the payback time as a function of selling price between 160 and 110 USD/ton was estimated to be from 1.5 to 4 years. The economic feasibility of the FPM3 was estimated, comparing the added values for three scenarios: 1st case, currently-used sugar production, 16.5 USD/ton of cane; 2nd case, factoring in the cogeneration improvement, 27 USD/ton of cane; and 3rd case, with cogeneration improvement and Bio-oil production, 40 USD/ton of cane. The energy use of SCAR and the introduction of FPM3 in the sugar mill are promising improvements that could result in a potential surplus of 80 kWh(e)/ton of cane in-season, or 6 x 10(6)ton of Bio-oil (LHV=15 MJ/kg) for use off-season in a milling season of 4 million tons of raw sugar. PMID:16797957

  8. Chitin and L(+)-lactic acid production from crab (Callinectes bellicosus) wastes by fermentation of Lactobacillus sp. B2 using sugar cane molasses as carbon source.

    PubMed

    Flores-Albino, Belem; Arias, Ladislao; Gómez, Jorge; Castillo, Alberto; Gimeno, Miquel; Shirai, Keiko

    2012-09-01

    Crab wastes are employed for simultaneous production of chitin and L(+)-lactic acid by submerged fermentation of Lactobacillus sp. B2 using sugar cane molasses as carbon source. Response surface methodology was applied to design the culture media considering demineralization. Fermentations in stirred tank reactor (2L) using selected conditions produced 88% demineralization and 56% deproteinization with 34% yield of chitin and 19.5 gL(-1) of lactic acid (77% yield). The chitin purified from fermentation displayed 95% degree of acetylation and 0.81 and 1 ± 0.125% of residual ash and protein contents, respectively. PMID:22367529

  9. Utilization of molasses and sugar cane bagasse for production of fungal invertase in solid state fermentation using Aspergillus niger GH1.

    PubMed

    Veana, F; Martínez-Hernández, J L; Aguilar, C N; Rodríguez-Herrera, R; Michelena, G

    2014-01-01

    Agro-industrial wastes have been used as substrate-support in solid state fermentation for enzyme production. Molasses and sugarcane bagasse are by-products of sugar industry and can be employed as substrates for invertase production. Invertase is an important enzyme for sweeteners development. In this study, a xerophilic fungus Aspergillus niger GH1 isolated of the Mexican semi-desert, previously reported as an invertase over-producer strain was used. Molasses from Mexico and Cuba were chemically analyzed (total and reducer sugars, nitrogen and phosphorous contents); the last one was selected based on chemical composition. Fermentations were performed using virgin and hydrolyzate bagasse (treatment with concentrated sulfuric acid). Results indicated that, the enzymatic yield (5231 U/L) is higher than those reported by other A. niger strains under solid state fermentation, using hydrolyzate bagasse. The acid hydrolysis promotes availability of fermentable sugars. In addition, maximum invertase activity was detected at 24 h using low substrate concentration, which may reduce production costs. This study presents an alternative method for invertase production using a xerophilic fungus isolated from Mexican semi-desert and inexpensive substrates (molasses and sugarcane bagasse). PMID:25242918

  10. Utilization of molasses and sugar cane bagasse for production of fungal invertase in solid state fermentation using Aspergillus niger GH1

    PubMed Central

    Veana, F.; Martínez-Hernández, J.L.; Aguilar, C.N.; Rodríguez-Herrera, R.; Michelena, G.

    2014-01-01

    Agro-industrial wastes have been used as substrate-support in solid state fermentation for enzyme production. Molasses and sugarcane bagasse are by-products of sugar industry and can be employed as substrates for invertase production. Invertase is an important enzyme for sweeteners development. In this study, a xerophilic fungus Aspergillus niger GH1 isolated of the Mexican semi-desert, previously reported as an invertase over-producer strain was used. Molasses from Mexico and Cuba were chemically analyzed (total and reducer sugars, nitrogen and phosphorous contents); the last one was selected based on chemical composition. Fermentations were performed using virgin and hydrolyzate bagasse (treatment with concentrated sulfuric acid). Results indicated that, the enzymatic yield (5231 U/L) is higher than those reported by other A. niger strains under solid state fermentation, using hydrolyzate bagasse. The acid hydrolysis promotes availability of fermentable sugars. In addition, maximum invertase activity was detected at 24 h using low substrate concentration, which may reduce production costs. This study presents an alternative method for invertase production using a xerophilic fungus isolated from Mexican semi-desert and inexpensive substrates (molasses and sugarcane bagasse). PMID:25242918

  11. Plant growth-promoting traits of epiphytic and endophytic yeasts isolated from rice and sugar cane leaves in Thailand.

    PubMed

    Nutaratat, Pumin; Srisuk, Nantana; Arunrattiyakorn, Panarat; Limtong, Savitree

    2014-08-01

    A total of 1035 yeast isolates, obtained from rice and sugar cane leaves, were screened primarily for indole-3-acetic acid (IAA) production. Thirteen isolates were selected, due to their IAA production ranging from 1.2 to 29.3 mg g(-)(1) DCW. These isolates were investigated for their capabilities of calcium phosphate and ZnO(3) solubilisation, and also for production of NH(3), polyamine, and siderophore. Their 1-aminocyclopropane-1-carboxylate (ACC) deaminase, catalase and fungal cell wall-degrading enzyme activities were assessed. Their antagonism against rice fungal pathogens was also evaluated. Strain identification, based on molecular taxonomy, of the thirteen yeast isolates revealed that four yeast species - i.e. Hannaella sinensis (DMKU-RP45), Cryptococcus flavus (DMKU-RE12, DMKU-RE19, DMKU-RE67, and DMKU-RP128), Rhodosporidium paludigenum (DMKU-RP301) and Torulaspora globosa (DMKU-RP31) - were capable of high IAA production. Catalase activity was detected in all yeast strains tested. The yeast R. paludigenum DMKU-RP301 was the best IAA producer, yielding 29.3 mg g(-)(1) DCW, and showed the ability to produce NH3 and siderophore. Different levels of IAA production (7.2-9.7 mg g(-)(1) DCW) were found in four strains of C. flavus DMKU-RE12, DMKU-RE19, and DMKU-RE67, which are rice leaf endophytes, and strain DMKU-RP128, which is a rice leaf epiphyte. NH(3) production and carboxymethyl cellulase (CMCase) activity was also detected in these four strains. Antagonism to fungal plant pathogens and production of antifungal volatile compounds were exhibited in T. globosa DMKU-RP31, as well as a moderate level of IAA production (4.9 mg g(-)(1) DCW). The overall results indicated that T. globosa DMKU-RP31 might be used in two ways: enhancing plant growth and acting as a biocontrol agent. In addition, four C. flavus were also found to be strains of interest for optimal IAA production. PMID:25110131

  12. Lidar observation campaign of sugar cane fires and industrial emissions in the State of São Paulo, Brazil

    NASA Astrophysics Data System (ADS)

    Landulfo, E.; Jorge, Maria Paulete M. P.; Held, Gerhard; Guardani, Roberto; Steffens, Juliana; dos Anjos F. Pinto, Sergio; Andre, Iara R.; Garcia, Gilberto; Lopes, F. J. S.; Mariano, Glauber L.; da Costa, Renata F.; Rodrigues, Patricia F.

    2010-10-01

    Brazil has an important role in the biomass burning, with the detection of approximately 100,000 burning spots in a single year (2007). Most of these spots occur in the southern part of the Amazon basin during the dry season (from August to november) and these emissions reach the southeast of the country, a highly populated region and with serious urban air pollution problems. With the growing demand on biofuels, sugarcane is considerably expanding in the state of Sao Paulo, being a strong contributor to the bad air quality in this region. In the state of Sao Paulo, the main land use are pasture and sugarcane crop, that covers around 50% and 10% of the total area, respectively. Despite the aerosol from sugarcane burning having reduced atmospheric residence time, from a few days to some weeks, they might get together with those aerosol which spread over long distances (hundreds to thousands of kilometers). In the period of June through February 2010 a LIDAR observation campaign was carried in the state of Sao Paulo, Brazil, in order to observe and characterize optically the aerosols from two distinct sources, namely, sugar cane biomass burning and industrial emissions. For this purpose 2 LIDAR systems were available, one mobile and the other placed in a laboratory, both working in the visible (532 nm) and additionally the mobile system had a Raman channel available (607 nm). Also this campaign counted with a SODAR, a meteorological RADAR specially set up to detect aerosol "echoes" and gas-particle analyzers. To guarantee a good regional coverage 4 distinct sites were available to deploy the instruments, 2 in the near field of biomass burning activities (Rio Claro and Bauru), one for industrial emissions (Cubatao) and others from urban sources (Sao Paulo). The whole campaign provide the equivalent of 30 days of measurements which allowed us to get aerosol optical properties such as backscattering/extinction coefficients, scatter and LIDAR ratios, those were used to correlate with air quality and meteorological indicators and quantities. In this paper we should focus on the preliminary results of the Raman LIDAR system and its derived aerosol optical quantities.

  13. Physical vapor deposited thin films of lignins extracted from sugar cane bagasse: morphology, electrical properties, and sensing applications.

    PubMed

    Volpati, Diogo; Machado, Aislan D; Olivati, Clarissa A; Alves, Neri; Curvelo, Antonio A S; Pasquini, Daniel; Constantino, Carlos J L

    2011-09-12

    The concern related to the environmental degradation and to the exhaustion of natural resources has induced the research on biodegradable materials obtained from renewable sources, which involves fundamental properties and general application. In this context, we have fabricated thin films of lignins, which were extracted from sugar cane bagasse via modified organosolv process using ethanol as organic solvent. The films were made using the vacuum thermal evaporation technique (PVD, physical vapor deposition) grown up to 120 nm. The main objective was to explore basic properties such as electrical and surface morphology and the sensing performance of these lignins as transducers. The PVD film growth was monitored via ultraviolet-visible (UV-vis) absorption spectroscopy and quartz crystal microbalance, revealing a linear relationship between absorbance and film thickness. The 120 nm lignin PVD film morphology presented small aggregates spread all over the film surface on the nanometer scale (atomic force microscopy, AFM) and homogeneous on the micrometer scale (optical microscopy). The PVD films were deposited onto Au interdigitated electrode (IDE) for both electrical characterization and sensing experiments. In the case of electrical characterization, current versus voltage (I vs V) dc measurements were carried out for the Au IDE coated with 120 nm lignin PVD film, leading to a conductivity of 3.6 × 10(-10) S/m. Using impedance spectroscopy, also for the Au IDE coated with the 120 nm lignin PVD film, dielectric constant of 8.0, tan ? of 3.9 × 10(-3), and conductivity of 1.75 × 10(-9) S/m were calculated at 1 kHz. As a proof-of-principle, the application of these lignins as transducers in sensing devices was monitored by both impedance spectroscopy (capacitance vs frequency) and I versus time dc measurements toward aniline vapor (saturated atmosphere). The electrical responses showed that the sensing units are sensible to aniline vapor with the process being reversible. AFM images conducted directly onto the sensing units (Au IDE coated with 120 nm lignin PVD film) before and after the sensing experiments showed a decrease in the PVD film roughness from 5.8 to 3.2 nm after exposing to aniline. PMID:21766835

  14. Filtered molasses concentrate from sugar cane: natural functional ingredient effective in lowering the glycaemic index and insulin response of high carbohydrate foods.

    PubMed

    Wright, Alison G; Ellis, Timothy P; Ilag, Leodevico L

    2014-12-01

    An aqueous filtered molasses concentrate (FMC) sourced from sugar cane was used as a functional ingredient in a range of carbohydrate-containing foods to reduce glycaemic response. When compared to untreated controls, postprandial glucose responses in the test products were reduced 5-20%, assessed by accredited glycaemic index (GI) testing. The reduction in glucose response in the test foods was dose-dependent and directly proportional to the ratio of FMC added to the amount of available carbohydrate in the test products. The insulin response to the foods was also reduced with FMC addition as compared to untreated controls. Inclusion of FMC in test foods did not replace any formulation ingredients; it was incorporated as an additional ingredient to existing formulations. Filtered molasses concentrate, made by a proprietary and patented process, contains many naturally occurring compounds. Some of the identified compounds are known to influence carbohydrate metabolism, and include phenolic compounds, minerals and organic acids. FMC, sourced from a by-product of sugar cane processing, shows potential as a natural functional ingredient capable of modifying carbohydrate metabolism and contributing to GI reduction of processed foods and beverages. PMID:25373842

  15. Modeling potential freshwater ecotoxicity impacts due to pesticide use in biofuel feedstock production: the cases of maize, rapeseed, salix, soybean, sugar cane, and wheat.

    PubMed

    Nordborg, Maria; Cederberg, Christel; Berndes, Göran

    2014-10-01

    The inclusion of ecotoxicity impacts of pesticides in environmental assessments of biobased products has long been hampered by methodological challenges. We expanded the pesticide database and the regional coverage of the pesticide emission model PestLCI v.2.0, combined it with the impact assessment model USEtox, and assessed potential freshwater ecotoxicity impacts (PFEIs) of pesticide use in selected biofuel feedstock production cases, namely: maize (Iowa, US, two cases), rapeseed (Schleswig-Holstein, Germany), Salix (South Central Sweden), soybean (Mato Grosso, Brazil, two cases), sugar cane (São Paulo, Brazil), and wheat (Schleswig-Holstein, Germany). We found that PFEIs caused by pesticide use in feedstock production varied greatly, up to 3 orders of magnitude. Salix has the lowest PFEI per unit of energy output and per unit of cultivated area. Impacts per biofuel unit were 30, 750, and 1000 times greater, respectively, for the sugar cane, wheat and rapeseed cases than for Salix. For maize genetically engineered (GE) to resist glyphosate herbicides and to produce its own insecticidal toxin, maize GE to resist glyphosate, soybeans GE to resist glyphosate and conventional soybeans, the impacts were 110, 270, 305, and 310 times greater than for Salix, respectively. The significance of field and site-specific conditions are discussed, as well as options for reducing negative impacts in biofuel feedstock production. PMID:25207789

  16. Use of a new Trichoderma harzianum strain isolated from the Amazon rainforest with pretreated sugar cane bagasse for on-site cellulase production.

    PubMed

    Delabona, Priscila da Silva; Farinas, Cristiane Sanchez; da Silva, Mateus Ribeiro; Azzoni, Sindelia Freitas; Pradella, José Geraldo da Cruz

    2012-03-01

    The on-site production of cellulases is an important strategy for the development of sustainable second-generation ethanol production processes. This study concerns the use of a specific cellulolytic enzyme complex for hydrolysis of pretreated sugar cane bagasse. Glycosyl hydrolases (FPase, xylanase, and β-glucosidase) were produced using a new strain of Trichoderma harzianum, isolated from the Amazon rainforest and cultivated under different conditions. The influence of the carbon source was first investigated using shake-flask cultures. Selected carbon sources were then further studied under different pH conditions using a stirred tank bioreactor. Enzymatic activities up to 121 FPU/g, 8000 IU/g, and 1730 IU/g of delignified steam-exploded bagasse+sucrose were achieved for cellulase, xylanase and β-glucosidase, respectively. This enzymatic complex was used to hydrolyze pretreated sugar cane bagasse. A comparative evaluation, using an enzymatic extract from Trichoderma reesei RUTC30, indicated similar performance of the T. harzianum enzyme complex, being a potential candidate for on-site production of enzymes. PMID:22221990

  17. Direct Zinc Determination in Brazilian Sugar Cane Spirit by Solid-Phase Extraction Using Moringa oleifera Husks in a Flow System with Detection by FAAS

    PubMed Central

    Alves, Vanessa N.; Borges, Simone S. O.; Coelho, Nivia M. M.

    2011-01-01

    This paper reports a method for the determination of zinc in Brazilian sugar cane spirit, (cachaça in Portuguese), using solid-phase extraction with a flow injection analysis system and detection by FAAS. The sorbent material used was activated carbon obtained from Moringa oleifera husks. Flow and chemical variables of the proposed system were optimized through multivariate designs. The factors selected were sorbent mass, sample pH, sample flow rate, and eluent concentration. The optimum extraction conditions were obtained using a sample pH of 4.0, a sample flow rate of 6.0?mL?min?1, 30.0?mg of sorbent mass, and 1.0?mol?L?1 HNO3 as the eluent at a flow rate of 4.0?mL?min?1. The limit of detection for zinc was 1.9??g?L?1, and the precision was below 0.82% (20.0??g?L?1, n = 7). The analytical curve was linear from 2 to 50??g?L?1, with a correlation coefficient of 0.9996. The method developed was successfully applied to spiked Brazilian sugar cane spirit, and accuracy was assessed through recovery tests, with results ranging from 83% to 100%. PMID:21785595

  18. Two-in-one fuel combining sugar cane with low rank coal and its CO₂ reduction effects in pulverized-coal power plants.

    PubMed

    Lee, Dong-Wook; Bae, Jong-Soo; Lee, Young-Joo; Park, Se-Joon; Hong, Jai-Chang; Lee, Byoung-Hwa; Jeon, Chung-Hwan; Choi, Young-Chan

    2013-02-01

    Coal-fired power plants are facing to two major independent problems, namely, the burden to reduce CO(2) emission to comply with renewable portfolio standard (RPS) and cap-and-trade system, and the need to use low-rank coal due to the instability of high-rank coal supply. To address such unresolved issues, integrated gasification combined cycle (IGCC) with carbon capture and storage (CCS) has been suggested, and low rank coal has been upgraded by high-pressure and high-temperature processes. However, IGCC incurs huge construction costs, and the coal upgrading processes require fossil-fuel-derived additives and harsh operation condition. Here, we first show a hybrid coal that can solve these two problems simultaneously while using existing power plants. Hybrid coal is defined as a two-in-one fuel combining low rank coal with a sugar cane-derived bioliquid, such as molasses and sugar cane juice, by bioliquid diffusion into coal intrapores and precarbonization of the bioliquid. Unlike the simple blend of biomass and coal showing dual combustion behavior, hybrid coal provided a single coal combustion pattern. If hybrid coal (biomass/coal ratio = 28 wt %) is used as a fuel for 500 MW power generation, the net CO(2) emission is 21.2-33.1% and 12.5-25.7% lower than those for low rank coal and designed coal, and the required coal supply can be reduced by 33% compared with low rank coal. Considering high oil prices and time required before a stable renewable energy supply can be established, hybrid coal could be recognized as an innovative low-carbon-emission energy technology that can bridge the gulf between fossil fuels and renewable energy, because various water-soluble biomass could be used as an additive for hybrid coal through proper modification of preparation conditions. PMID:23286316

  19. Initial analysis from a lidar observation campaign of sugar cane fires in the central and western portion of the São Paulo State, Brazil

    NASA Astrophysics Data System (ADS)

    da Silva Lopes, Fábio Juliano; Held, Gerhard; Nakaema, Walter M.; Rodrigues, Patricia F.; Bassan, Jose M.; Landulfo, Eduardo

    2011-11-01

    The central and western portion of the Sao Paulo State has large areas of sugar cane plantations, and due to the growing demand for biofuels, the production is increasing every year. During the harvest period some plantation areas are burnt a few hours before the manual cutting, causing significant quantities of biomass burning aerosol to be injected into the atmosphere. During August 2010, a field campaign has been carried out in Ourinhos, situated in the south-western region of Sao Paulo State. A 2-channel Raman Lidar system and two meteorological S-Band Doppler Radars are used to indentify and quantify the biomass burning plumes. In addiction, CALIPSO Satellite observations were used to compare the aerosol optical properties detected in that region with those retrieved by Raman Lidar system. Although the campaign yielded 30 days of measurements, this paper will be focusing only one case study, when aerosols released from nearby sugar cane fires were detected by the Lidar system during a CALIPSO overpass. The meteorological radar, installed in Bauru, approximately 110 km northeast from the experimental site, had recorded "echoes" (dense smoke comprising aerosols) from several fires occurring close to the Raman Lidar system, which also detected an intense load of aerosol in the atmosphere. HYSPLIT model forward trajectories presented a strong indication that both instruments have measured the same air masss parcels, corroborated with the Lidar Ratio values from the 532 nm elastic and 607 nm Raman N2 channel analyses and data retrieved from CALIPSO have indicated the predominance of aerosol from biomass burning sources.

  20. A novel strategy for preparing calibration standards for the analysis of plant materials by laser-induced breakdown spectroscopy: A case study with pellets of sugar cane leaves

    NASA Astrophysics Data System (ADS)

    da Silva Gomes, Marcos; de Carvalho, Gabriel Gustinelli Arantes; Santos, Dário, Junior; Krug, Francisco José

    2013-08-01

    Calibration is still a challenging task when dealing with the direct analysis of solids. This is particularly true for laser-induced breakdown spectroscopy (LIBS), and laser ablation inductively coupled plasma optical emission spectrometry/mass spectrometry, when the calibrations are matrix-dependent and/or appropriate certified reference materials are generally not available. Looking at the analysis of plant materials in the form of pressed pellets by LIBS, a new method to overcome and/or minimize this difficulty is proposed by keeping the matrix constant in order to produce matrix-matched calibration pellets. To achieve this goal and to test this novel approach, ground sugar cane leaves were chosen and submitted to acid extractions for obtaining the corresponding blank or a material containing very low concentrations of the analytes. The resulting dried solid material was used either as a blank or a low concentration standard, and also homogeneously mixed with the original plant material at appropriate ratios as well. The corresponding pellets were used as calibration standards and ablated at 30 different sites by applying 25 laser pulses per site with a Q-switched Nd:YAG at 1064 nm. The plasma emission collected by lenses was directed through an optical fiber towards a spectrometer equipped with Echelle optics and intensified charge-coupled device. Delay time and integration time gate were fixed at 2.0 and 5.0 ?s, respectively. This calibration strategy was tested for the determination of Ca, Mg, K, P, Cu, Mn, and Zn by LIBS in pellets of leaves from 17 varieties of sugar cane and good correlations were obtained with inductively coupled plasma optical emission spectrometry results in the corresponding acid digests. The proposed approach was also useful to estimate the limits of detection based on measurements of blanks, as recommended by IUPAC, or with the aid of a low concentration standard.

  1. Contribution of cane bagasse used as a fuel in the sugar industry to changes in outdoor and indoor air quality in middle Egypt

    NASA Astrophysics Data System (ADS)

    Hindy, K. T.

    The present one-year study is concerned with the degree of relationship between the changes in quantity and quality of outdoor and indoor settled dust in Abu Qurqas town in Middle Egypt and the combustion of cane bagasse in boiler furnaces in a sugar factory located in the same town. It can be suggested that this process is responsible for increasing the rate of outdoor and indoor deposition of combustible matter by 2-8 and 2-7 times, respectively, during the period of December-April. However, it can be suggested also that the same process has a limited role, as it is a source of ash content of both outdoor and indoor settled dust and is ineffective in polluting the two environments with calcium, chloride and sulphate ions and tar fraction. Indoor levels of settled dust and its constituents were found to be lowest during cold months. This causes the indoor levels of combustible matter resulting from the sugar factory to be lower than the outdoor levels by 41-45% during December-March and by 28% during April which is a relatively warm month in Middle Egypt.

  2. 77 FR 55451 - Determination of Total Amounts of Fiscal Year 2013 Tariff-Rate Quotas for Raw Cane Sugar and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-10

    ... according to provisions in the sugar program, as follows: Hawaii-- 245,499 STRV; Florida--2,250,786 STRV..., 2012. Michael T. Scuse, Under Secretary, Farm and Foreign Agricultural Services. BILLING CODE 3410-01-P...

  3. 78 FR 57445 - Fiscal Year 2014 WTO Tariff-Rate Quota Allocations for Raw Cane Sugar, Refined and Specialty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-18

    ... United States Trade Representative in Presidential Proclamation 6763 (60 FR 1007). On September 13, 2013... the in-quota quantity of the FY 2014 refined-sugar TRQ at 122,000 MTRV for which the sucrose...

  4. Lignocellulolytic enzyme production of Pleurotus ostreatus growth in agroindustrial wastes.

    PubMed

    da Luz, José Maria Rodrigues; Nunes, Mateus Dias; Paes, Sirlaine Albino; Torres, Denise Pereira; de Cássia Soares da Silva, Marliane; Kasuya, Maria Catarina Megumi

    2012-10-01

    The mushroom Pleurotus ostreatus has nutritional and medicinal characteristics that depend on the growth substrate. In nature, this fungus grows on dead wood, but it can be artificially cultivated on agricultural wastes (coffee husks, eucalyptus sawdust, corncobs and sugar cane bagasse). The degradation of agricultural wastes involves some enzyme complexes made up of oxidative (laccase, manganese peroxidase and lignin peroxidase) and hydrolytic enzymes (cellulases, xylanases and tanases). Understanding how these enzymes work will help to improve the productivity of mushroom cultures and decrease the potential pollution that can be caused by inadequate discharge of the agroindustrial residues. The objective of this work was to assess the activity of the lignocellulolytic enzymes produced by two P. ostreatus strains (PLO 2 and PLO 6). These strains were used to inoculate samples of coffee husks, eucalyptus sawdust or eucalyptus bark add with or without 20 % rice bran. Every five days after substrate inoculation, the enzyme activity and soluble protein concentration were evaluated. The maximum activity of oxidative enzymes was observed at day 10 after inoculation, and the activity of the hydrolytic enzymes increased during the entire period of the experiment. The results show that substrate composition and colonization time influenced the activity of the lignocellulolytic enzymes. PMID:24031982

  5. Modeling sugar cane yield with a process-based model from site to continental scale: uncertainties arising from model structure and parameter values

    NASA Astrophysics Data System (ADS)

    Valade, A.; Ciais, P.; Vuichard, N.; Viovy, N.; Huth, N.; Marin, F.; Martiné, J.-F.

    2014-01-01

    Agro-Land Surface Models (agro-LSM) have been developed from the integration of specific crop processes into large-scale generic land surface models that allow calculating the spatial distribution and variability of energy, water and carbon fluxes within the soil-vegetation-atmosphere continuum. When developing agro-LSM models, a particular attention must be given to the effects of crop phenology and management on the turbulent fluxes exchanged with the atmosphere, and the underlying water and carbon pools. A part of the uncertainty of Agro-LSM models is related to their usually large number of parameters. In this study, we quantify the parameter-values uncertainty in the simulation of sugar cane biomass production with the agro-LSM ORCHIDEE-STICS, using a multi-regional approach with data from sites in Australia, La Réunion and Brazil. In ORCHIDEE-STICS, two models are chained: STICS, an agronomy model that calculates phenology and management, and ORCHIDEE, a land surface model that calculates biomass and other ecosystem variables forced by STICS' phenology. First, the parameters that dominate the uncertainty of simulated biomass at harvest date are determined through a screening of 67 different parameters of both STICS and ORCHIDEE on a multi-site basis. Secondly, the uncertainty of harvested biomass attributable to those most sensitive parameters is quantified and specifically attributed to either STICS (phenology, management) or to ORCHIDEE (other ecosystem variables including biomass) through distinct Monte-Carlo runs. The uncertainty on parameter values is constrained using observations by calibrating the model independently at seven sites. In a third step, a sensitivity analysis is carried out by varying the most sensitive parameters to investigate their effects at continental scale. A Monte-Carlo sampling method associated with the calculation of Partial Ranked Correlation Coefficients is used to quantify the sensitivity of harvested biomass to input parameters on a continental scale across the large regions of intensive sugar cane cultivation in Australia and Brazil. Ten parameters driving most of the uncertainty in the ORCHIDEE-STICS modeled biomass at the 7 sites are identified by the screening procedure. We found that the 10 most sensitive parameters control phenology (maximum rate of increase of LAI) and root uptake of water and nitrogen (root profile and root growth rate, nitrogen stress threshold) in STICS, and photosynthesis (optimal temperature of photosynthesis, optimal carboxylation rate), radiation interception (extinction coefficient), and transpiration and respiration (stomatal conductance, growth and maintenance respiration coefficients) in ORCHIDEE. We find that the optimal carboxylation rate and photosynthesis temperature parameters contribute most to the uncertainty in harvested biomass simulations at site scale. The spatial variation of the ranked correlation between input parameters and modeled biomass at harvest is well explained by rain and temperature drivers, suggesting climate-mediated different sensitivities of modeled sugar cane yield to the model parameters, for Australia and Brazil. This study reveals the spatial and temporal patterns of uncertainty variability for a highly parameterized agro-LSM and calls for more systematic uncertainty analyses of such models.

  6. Topochemical distribution of lignin and hydroxycinnamic acids in sugar-cane cell walls and its correlation with the enzymatic hydrolysis of polysaccharides

    PubMed Central

    2011-01-01

    Background Lignin and hemicelluloses are the major components limiting enzyme infiltration into cell walls. Determination of the topochemical distribution of lignin and aromatics in sugar cane might provide important data on the recalcitrance of specific cells. We used cellular ultraviolet (UV) microspectrophotometry (UMSP) to topochemically detect lignin and hydroxycinnamic acids in individual fiber, vessel and parenchyma cell walls of untreated and chlorite-treated sugar cane. Internodes, presenting typical vascular bundles and sucrose-storing parenchyma cells, were divided into rind and pith fractions. Results Vascular bundles were more abundant in the rind, whereas parenchyma cells predominated in the pith region. UV measurements of untreated fiber cell walls gave absorbance spectra typical of grass lignin, with a band at 278 nm and a pronounced shoulder at 315 nm, assigned to the presence of hydroxycinnamic acids linked to lignin and/or to arabino-methylglucurono-xylans. The cell walls of vessels had the highest level of lignification, followed by those of fibers and parenchyma. Pith parenchyma cell walls were characterized by very low absorbance values at 278 nm; however, a distinct peak at 315 nm indicated that pith parenchyma cells are not extensively lignified, but contain significant amounts of hydroxycinnamic acids. Cellular UV image profiles scanned with an absorbance intensity maximum of 278 nm identified the pattern of lignin distribution in the individual cell walls, with the highest concentration occurring in the middle lamella and cell corners. Chlorite treatment caused a rapid removal of hydroxycinnamic acids from parenchyma cell walls, whereas the thicker fiber cell walls were delignified only after a long treatment duration (4 hours). Untreated pith samples were promptly hydrolyzed by cellulases, reaching 63% of cellulose conversion after 72 hours of hydrolysis, whereas untreated rind samples achieved only 20% hydrolyzation. Conclusion The low recalcitrance of pith cells correlated with the low UV-absorbance values seen in parenchyma cells. Chlorite treatment of pith cells did not enhance cellulose conversion. By contrast, application of the same treatment to rind cells led to significant removal of hydroxycinnamic acids and lignin, resulting in marked enhancement of cellulose conversion by cellulases. PMID:21410971

  7. Simultaneous saccharification and co-fermentation of crystalline cellulose and sugar cane bagasse hemicellulose hydrolysate to lactate by a thermotolerant acidophilic Bacillus sp.

    PubMed

    Patel, Milind A; Ou, Mark S; Ingram, Lonnie O; Shanmugam, K T

    2005-01-01

    Polylactides produced from renewable feedstocks, such as corn starch, are being developed as alternatives to plastics derived from petroleum. In addition to corn, other less expensive biomass resources can be readily converted to component sugars (glucose, xylose, etc.) by enzyme and/or chemical treatment for fermentation to optically pure lactic acid to reduce the cost of lactic acid. Lactic acid bacteria used by the industry lack the ability to ferment pentoses (hemicellulose-derived xylose and arabinose), and their growth and fermentation optima also differ from the optimal conditions for the activity of fungal cellulases required for depolymerization of cellulose. To reduce the overall cost of simultaneous saccharification and fermentation (SSF) of cellulose, we have isolated bacterial biocatalysts that can grow and ferment all sugars in the biomass at conditions that are also optimal for fungal cellulases. SSF of Solka Floc cellulose by one such isolate, Bacillus sp. strain 36D1, yielded l(+)-lactic acid at an optical purity higher than 95% with cellulase (Spezyme CE; Genencor International) added at about 10 FPU/g cellulose, with a product yield of about 90% of the expected maximum. Volumetric productivity of SSF to lactic acid was optimal between culture pH values of 4.5 and 5.5 at 50 degrees C. At a constant pH of 5.0, volumetric productivity of lactic acid was maximal at 55 degrees C. Strain 36D1 also co-fermented cellulose-derived glucose and sugar cane bagasse hemicellulose-derived xylose simultaneously (SSCF). In a batch SSCF of 40% acid-treated hemicellulose hydrolysate (over-limed) and 20 g/L Solka Floc cellulose, strain 36D1 produced about 35 g/L lactic acid in about 144 h with 15 FPU of Spezyme CE/g cellulose. The maximum volumetric productivity of lactic acid in this SSCF was 6.7 mmol/L (h). Cellulose-derived lactic acid contributed to about 30% of this total lactic acid. These results show that Bacillus sp. strain 36D1 is well-suited for simultaneous saccharification and co-fermentation of all of the biomass-derived sugars to lactic acid. PMID:16209550

  8. Characterization of a wollastonite glass-ceramic material prepared using sugar cane bagasse ash (SCBA) as one of the raw materials

    SciTech Connect

    Teixeira, Silvio R.; Souza, Agda E.; Carvalho, Claudio L.; Reynoso, Victor C.S.; Romero, Maximina; Rincón, Jesús Ma.

    2014-12-15

    Glass-ceramic material prepared with sugar cane bagasse ash as one of the raw materials was characterized to determine some important properties for its application as a coating material. X-ray diffraction patterns showed that wollastonite-2M (CaSiO{sub 3}) was the major glass-ceramic phase. The Rietveld method was used to quantify the crystalline (60 wt.%) and vitreous (40 wt.%) phases in the glass-ceramic. The microstructure (determined by scanning electron microscopy) of this material had a marble appearance, showing a microporous network of elongated crystals with some areas with dendritic, feather-like ordering. Microhardness data gave a mean hardness value of 564.4 HV (Vickers-hardness), and light microscopy disclosed a greenish brown colored material with a vitreous luster. - Highlights: • We studied the properties of a glass-ceramic material obtained from sugarcane ash. • This material has the appearance and hardness of natural stones. • A refining method gave information about its amorphous and crystalline phases. • This material has potential to be used as coating plates for buildings.

  9. [Replacing of residue from production of palm Palm Royal Australian (Archontophoenix alexan- drae) in silage of sugar cane in diets of sheep].

    PubMed

    Bayão, Geraldo Fábio Viana; Queiroz, Augusto César de; Freitas, Samuel Galvão de; Batalha, Camila Delveaux Araujo; Sousa, Katiene Régia Silva; Pimentel, Róberson Machado; Cardoso, Lucas Ladeira; Cardoso, Alex Junio da Silva

    2014-12-01

    The aim of this study was to evaluate the chemical composition, voluntary intake and apparent digestibility of the diets containing residue from palm heart of Australian Royal Palm (Archontophoenix alexandrae) to replace sugar cane on sheep. Twelve sheep were used with average live weight of 23.3 ± 2.8 Kg and they placed in metabolism cages and distributed in six latin square 2 x 2 in a factorial design 3 x 2 (three types of residue--sheet, bark and composed--and two levels of residue's replacement, 5% and 15%). It was observed higher intake of dry matter (DM), organic matter (OM), nonfiber carbohydrates (NFC) by substitution of composed residue. The average values of apparent digestibility of DM, OM, crude protein (CP), neutral detergent fibre correct for ash and protein (NDFap) and total digestible nutrients (TDN) were higher for sheet residue. There was interaction between type of residue and level of residue's replacement on the urinary excretion of total nitrogen (NUE), apparent nitrogen balance (BNA) and microbial nitrogen compost (NMIC). Residues from palm heart of Australian Royal Palm can be used as roughage in the ruminants'diet, and of these residues, the sheet and composed residue showed better response in the evaluated characteristics. PMID:26336723

  10. Saccharification and fermentation of sugar cane bagasse by Klebsiella oxytoca P2 containing chromosomally integrated genes encoding the Zymomonas mobilis ethanol pathway

    SciTech Connect

    Doran, J.B.; Aldrich, H.C.; Ingram, L.O. . Dept. of Microbiology and Cell Science)

    1994-06-20

    Pretreatment of sugar cane bagasse is essential for a simultaneous saccharification and fermentation (SSF) process which uses recombinant Klebsiella oxytoca strain P2 and Genencor Spezyme CE. Strain P2 has been genetically engineered to express Zymomonas mobilis genes encoding the ethanol pathway and retains the native ability to transport and metabolize cellobiose (minimizing the need for extracellular cellobiase). In SSF studies with this organism, both the rate of ethanol production and ethanol yield were limited by saccharification at 10 and 20 filter paper units (FPU) g[sup [minus]1] acid-treated bagasse. Dilute slurries of biomass were converted to ethanol more efficiently (over 72% of theoretical yield) in simple batch fermentations than slurries containing high solids, albeit with the production of lower levels of ethanol. With high solids (i.e., 160 g acid-treated bagasse L[sup [minus]1]), a combination of 20 FPU cellulase g[sup [minus]1] bagasse, preincubation under saccharification conditions, and additional grinding (to reduce particle size) were required to produce ca. 40 g ethanol L[sup [minus]1]. Alternatively, almost 40 g ethanol L[sup [minus]1] was produced with 10 FPU cellulase g[sup [minus]1] bagasse by incorporating a second saccharification step (no further enzyme addition) followed by a second inoculation and short fermentation. In this way, a theoretical ethanol yield of over 70% was achieved with the production of 20 g ethanol 800 FPU[sup [minus]1] of commercial cellulase.

  11. Biochemical and Molecular Characterization of Saccharomyces cerevisiae Strains Obtained from Sugar-Cane Juice Fermentations and Their Impact in Cachaça Production?

    PubMed Central

    Oliveira, Valdinéia Aparecida; Vicente, Maristela Araújo; Fietto, Luciano Gomes; de Miranda Castro, Ieso; Coutrim, Maurício Xavier; Schüller, Dorit; Alves, Henrique; Casal, Margarida; de Oliveira Santos, Juliana; Araújo, Leandro Dias; da Silva, Paulo Henrique Alves; Brandão, Rogelio Lopes

    2008-01-01

    Saccharomyces cerevisiae strains from different regions of Minas Gerais, Brazil, were isolated and characterized aiming at the selection of starter yeasts to be used in the production of cachaça, the Brazilian sugar cane spirit. The methodology established took into account the screening for biochemical traits desirable in a yeast cachaça producer, such as no H2S production, high tolerance to ethanol and high temperatures, high fermentative capacity, and the abilities to flocculate and to produce mycocins. Furthermore, the yeasts were exposed to drugs such as 5,5?,5"-trifluor-d,l-leucine and cerulenin to isolate those that potentially overproduce higher alcohols and esters. The utilization of a random amplified polymorphic DNA-PCR method with primers based on intron splicing sites flanking regions of the COX1 gene, as well as microsatellite analysis, was not sufficient to achieve good differentiation among selected strains. In contrast, karyotype analysis allowed a clear distinction among all strains. Two selected strains were experimentally evaluated as cachaça producers. The results suggest that the selection of strains as fermentation starters requires the combined use of biochemical and molecular criteria to ensure the isolation and identification of strains with potential characteristics to produce cachaça with a higher quality standard. PMID:18065624

  12. Observations on White Grubs Affecting Sugar Cane at the Juba Sugar Project, South-Western Somalia, in the 1980s, and Implications for Their Management.

    PubMed

    Cock, Matthew J W; Allard, Gillian B

    2013-01-01

    The authors made two visits to the Juba Sugar Project in south-west Somalia, at the beginning of the minor rains in October 1986, and at the beginning of the main rains in March 1987. Observations were made on morphospecies of scarabaeid white grub larvae, the adults, and the two associated for the key economic species, Cochliotis melolonthoides and Brachylepis werneri. Sampling larvae and adults by digging soil quadrats and adults by light trapping gave useful information on their biology and phenology. Sampling methods were evaluated and economic thresholds were extrapolated based on earlier work. Natural enemies were surveyed, and entomopathogenic nematodes and a cordyceps fungus (Ophiocordyceps barnesii) were considered to have potential to be used as biological control interventions. PMID:26464389

  13. Observations on White Grubs Affecting Sugar Cane at the Juba Sugar Project, South-Western Somalia, in the 1980s, and Implications for Their Management

    PubMed Central

    Cock, Matthew J. W.; Allard, Gillian B.

    2013-01-01

    The authors made two visits to the Juba Sugar Project in south-west Somalia, at the beginning of the minor rains in October 1986, and at the beginning of the main rains in March 1987. Observations were made on morphospecies of scarabaeid white grub larvae, the adults, and the two associated for the key economic species, Cochliotis melolonthoides and Brachylepis werneri. Sampling larvae and adults by digging soil quadrats and adults by light trapping gave useful information on their biology and phenology. Sampling methods were evaluated and economic thresholds were extrapolated based on earlier work. Natural enemies were surveyed, and entomopathogenic nematodes and a cordyceps fungus (Ophiocordyceps barnesii) were considered to have potential to be used as biological control interventions. PMID:26464389

  14. Duganella sacchari sp. nov. and Duganella radicis sp. nov., two novel species isolated from rhizosphere of field-grown sugar cane.

    PubMed

    Madhaiyan, M; Poonguzhali, S; Saravanan, V S; Hari, K; Lee, K-C; Lee, J-S

    2013-03-01

    Two strains, designated Sac-22(T) and Sac-41(T), were isolated from rhizosphere soil and rhizoplane of field-grown sugar cane clone Co86032. Comparative 16S rRNA gene sequence analysis showed a clear affiliation of these two bacteria with the class Betaproteobacteria, their closest relatives being Pseudoduganella violaceinigra and Duganella zoogloeoides with 16S rRNA gene sequence pairwise similarities of 96.4-97.2 % to the two novel strains. Strains Sac-22(T) and Sac-41(T) shared a 16S rRNA gene sequence similarity value of 97.6 %. Cells of the two strains were Gram-reaction-negative, aerobic, motile and rod-shaped. Ubiquinone (Q-8) was the respiratory quinone and the predominant polar lipids consisted of phosphatidylglycerol and phosphatidylethanolamine. The main cellular fatty acids were C16 : 0, C16 : 1ω7c/iso-C15 : 0 2-OH, C17 : 0 cyclo, C10 : 0 3-OH and C12 : 0. The DNA G+C content of the genomic DNA was 56.4 mol% for strain Sac-22(T) and 54.9 mol% for strain Sac-41(T). Based on the results of 16S rRNA gene sequence analysis and physiological and biochemical characterization, that differentiated strains Sac-22(T) and Sac-41(T) from all recognized species of the genus Duganella, it was concluded that strains represent two novel species in the genus Duganella for which the names Duganella sacchari sp. nov. (type strain Sac-22(T) = KCTC 22381(T) = NCIMB 14475(T)) and Duganella radicis sp. nov. (type strain Sac-41(T) = KCTC 22382(T) = NCIMB 14476(T)) are proposed. PMID:22753524

  15. Short term responses of nitrogen trace gas emissions to nitrogen fertilization in tropical sugar cane: Variations due to soils and management practices

    NASA Technical Reports Server (NTRS)

    Matson, P. A.; Billow, C.; Hall, S.; Zachariassen, J.

    1994-01-01

    Nitrogen (N) fertilization of agricultural systems is thought to be a major source of the increase in atmospheric N2O; NO emissions from soils have also been shown to increase due to N fertilization. While N fertilizer use is increasing rapidly in the developing world and in the tropics, nearly all of our information on gas emissions is derived from studies of temperate zone agriculture. Using chambers, we measured fluxes of N2O and NO following urea fertilization in tropical sugar cane systems growing on a variety of soil types in the Hawaiian Islands, USA. On the island of Maui, where urea is applied in irrigation lines and soils are mollisols and inceptisols, N2O fluxes were elevated for a week or less following fertilization; maximum average fluxes were typically less than 30 ng cm(exp -2)/ h. NO fluxes were often an order of magnitude less than N2O. Together, N2O and NO represented from 0.01 - 0.5% of the applied N. In fields on the island of Hawaii, where urea is broadcast on the surface and soils are andisols, N2O fluxes were similar in magnitude to Maui but remained elevated for much longer periods after fertilization. NO emissions were 2-5 times higher than N2O through most of the sampling periods. Together the gases loss represented approximately 1. 1 - 3% of the applied N. Laboratory studies indicate that denitrification is a critical source of N2O in Maui, but that nitrification is more important in Hawaii. Experimental studies suggest that differences in the pattern of N2O/NO and the processes producing them are a result of both carbon availability and placement of fertilizer, and that the more information-intensive fertilizer management practice results in lower emissions.

  16. Mutagenicity profile of atmospheric particulate matter in a small urban center subjected to airborne emission from vehicle traffic and sugar cane burning.

    PubMed

    Alves, Debora Kristina M; Kummrow, Fábio; Cardoso, Arnaldo A; Morales, Daniel A; Umbuzeiro, Gisela A

    2016-01-01

    Atmospheric particulate matter (PM) is genotoxic and recently was classified as carcinogenic to humans by the International Agency for Research on Cancer. PM chemical composition varies depending on source and atmospheric conditions. The Salmonella/microsome assay is the most used mutagenicity test and can identify the major chemical classes responsible for observed mutagenicity. The objective of this work was to characterize the mutagenicity of PM samples from a countryside city, Limeira, Brazil, which is influenced by heavy traffic and sugar cane biomass burning. Six samples of total PM were collected. Air mass backward trajectories were calculated. Organic extracts were assayed using the Salmonella/microsome microsuspension mutagenicity assay using TA98, YG1041, and TA1538, with and without metabolic activation (S9). YG1041 was the most sensitive strain and mutagenicity reached 9,700 revertants per m(3) without metabolic activation. Potency for TA1538 was higher than TA98, indicating that this strain should be considered in air mutagenicity studies. The increased response to YG1041 relative to TA98, and the decreased response with S9, suggests that nitroaromatics are the major contributors. Limeira is among the most mutagenic cities in the world. High mutagenicity in Limeira seems to occur when the air mass from the area of sugarcane production is mixed with air from the region impacted by anthropogenic activities such as traffic. An increase in the formation of nitro-polycyclic aromatic hydrocarbons may result from longer contact time between the aromatic compounds and the atmosphere with high NOx and ozone concentration, although more studies are required to confirm this hypothesis. Environ. Mol. Mutagen. 57:41-50, 2016. © 2015 Wiley Periodicals, Inc. PMID:26289646

  17. The effects of co-culturing non-Saccharomyces yeasts with S. cerevisiae on the sugar cane spirit (cachaça) fermentation process.

    PubMed

    Duarte, Whasley Ferreira; Amorim, Juliana Cunha; Schwan, Rosane Freitas

    2013-01-01

    Twenty non-Saccharomyces strains were previously tested in pure culture for their ability to grow in 12 % ethanol, their ?-glucosidase activity, flocculation, glycerol, ethanol and acetic acid production, fermentation kinetics and their production of volatile compounds. Of these 20 strains, three strains, namely, Pichia anomala UFLA CAF70, P. anomala UFLA CAF119 and Pichia caribbica UFLA CAF733, were evaluated in co-culture with Saccharomyces cerevisiae UFLA CA11. Of the mixed inocula, the mixture of P. caribbica UFLA CAF733 and S. cerevisiae UFLA CA11 gave the highest ethanol concentration (75.37 g/L), the lowest levels of residual glucose (1.14 g/L) and fructose (19.92 g/L), and the highest volumetric productivity (Q (p)) of ethanol. Twenty-three minor volatile compounds were identified in the fermented sugar cane juice. The mixed culture of P. caribbica UFLA CAF733 and S. cerevisiae UFLA CA11 gave the highest concentration of volatile compounds with good sensory descriptors; these compounds included ethyl esters (290.13 ?g/L), acetates (715.21 ?g/L) and monoterpenic alcohols (195.56 ?g/L). This mixed culture also gave the lowest concentration of volatile acids (1774.46 ?g/L) and aldehydes (121.10 ?g/L). In principal component analysis, the mixed inoculum of UFLA CAF733 and UFLA CA11 was positively characterized by ethyl hexanoate, 2-phenylethanol, linalool, nonanoic acid, ethyl butyrate, phenylethyl acetate, diethylsuccinate, hexanoic acid, and geraniol. In conclusion, we found that clear improvements could be achieved in the fermentation process with mixed, rather than pure, S. cerevisiae culture. The use of the non-Saccharomyces strain P. caribbica UFLA CAF733 in co-culture with S. cerevisiae UFLA CA11 may therefore be an interesting means by which to improve the quality of cachaça. PMID:22911390

  18. VIEW OF CANE CLEANING PLANT AS IT ENTERS THE MILL, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF CANE CLEANING PLANT AS IT ENTERS THE MILL, BUMPER ROLLERS IN THE CENTER OF PHOTOGRAPH. VIEW FROM THE WEST - Kekaha Sugar Company, Sugar Mill Building, 8315 Kekaha Road, Kekaha, Kauai County, HI

  19. Registration of Three High Fiber Sugar Cane Varieties, L 79-1002, HoCP 91-552 AND Ho 00-961, for Biofuels Production

    Technology Transfer Automated Retrieval System (TEKTRAN)

    High fiber sugarcane (Saccharum spp. hybrids) varieties, or energy canes, have been shown to be a viable feedstock for biofuel applications. Three high fiber sugarcane varieties, L 79-1002, HoCP 91-552 and Ho 00-961, were released in April 2007 for commercial biofuel production. L 79-1002 averaged 2...

  20. Bioenergy systems report. Special issue: cane energy systems

    SciTech Connect

    Not Available

    1986-03-01

    The report examines the use of cane to produce energy. It focuses primarily on two recent proposals for the production of electric power for the grid using cane residues and supplementary fuels. It also reviews use of cane juice or molasses to produce ethanol for blending with gasoline. In both types of cane energy systems, the objective is the production of energy as well as sugar or sugar products. The report is divided into sections on growing and harvesting biomass fuels in cane fields, producing power for the grid with these fuels, the uses of the cane juice produced in cane energy systems, the costs and revenues associated with these systems, and the national benefits derived from these systems.

  1. Organic aerosols in a Brazilian agro-industrial area: Speciation and impact of biomass burning

    NASA Astrophysics Data System (ADS)

    Urban, R. C.; Alves, C. A.; Allen, A. G.; Cardoso, A. A.; Campos, M. L. A. M.

    2016-03-01

    This work presents the first comprehensive organic characterization of atmospheric aerosols from an agro-industrial region (São Paulo State, Brazil) highly impacted by biomass burning. The organic speciation was performed using different solvents of increasing polarity, enabling the identification and quantification of 172 different organic species by GC-MS. The mass of organic compounds reached 123 μg m- 3 in an aerosol sample collected during the sugar cane harvest period compared with 0.82 μg m- 3 in the non-harvest period. The samples most impacted by biomass burning were those with the highest percentages of non-polar compounds (n-alkanes; up to 96%). However, in absolute terms, the total mass of polar compounds in such samples was greater than for samples less impacted by this activity. Retene (a marker for biomass combustion) was the most abundant of the 19 polycyclic aromatic hydrocarbons quantified, corresponding to 14%-84%. This work shows that biomass burning was responsible for a benzo(a)pyrene equivalent index value that exceeded the recommendation of the World Health Organization. Principal component analysis indicated that agricultural biomass burning and emissions from crop processing facilities explained 42% of the variance of the data, while 37% was explained by urban emissions, 10% by vehicle emissions, and 10% by biogenic sources. This study provides insights into the emissions of a suite of organic compounds that could participate in anthropic alteration of regional cloud formation and precipitation patterns.

  2. How combine harvesting of green cane billets with different levels of trash affects production and processing. Part II: Pilot plant processing to sugar

    Technology Transfer Automated Retrieval System (TEKTRAN)

    New refineries in Louisiana, USA are requesting Louisiana sugarcane factories to deliver very high pol/very low color (VHP/VLC) raw sugar with low ash concentrations. This higher quality raw sugar will allow both growers and factory processors to share economic premiums from the new refineries. A ...

  3. 32. RW Meyer Sugar Mill: 18761889. Threeroll sugar mill, oneton ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    32. RW Meyer Sugar Mill: 1876-1889. Three-roll sugar mill, one-ton daily processing capacity. Manufactured by Edwin Maw, Liverpool, England, ca. 1855-1870. View: End of mill into which cane was fed between top and bottom roll. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  4. 17. Photocopy of c. 1922 photograph of cane field tractor ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. Photocopy of c. 1922 photograph of cane field tractor developed and patented by Mr. Arsenaud of Laurel Valley Plantation; Claiborne Toups, overseer, is standing on the left. - Laurel Valley Sugar Plantation, State Route 308, Thibodaux, Lafourche Parish, LA

  5. 10. View of cane mill with reduction gears and steam ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. View of cane mill with reduction gears and steam engine in background. - Hacienda Azucarera La Concepcion, Sugar Mill Ruins, .3 Mi. W. of Junction of Rts. 418 & 111, Victoria, Agaudilla Municipio, PR

  6. Effect of a controlled-release urea supplement on rumen fermentation in sheep fed a diet of sugar cane tops (Saccharum officinarum), corn stubble (Zea mays) and King grass (Pennisetum purpureum).

    PubMed

    Puga, D C.; Galina, H M.; Pérez-Gil, R F.; Sanginés, G L.; Aguilera, B A.; Haenlein, G F.W.

    2001-03-01

    Four cannulated sheep were used to study ruminal fermentation of a diet consisting of 60% sugar cane tops (Saccharum officinarum), 30% corn stubble (Zea mays), 10% King grass (Pennisetum purpureum) and 0% (control), 10, 20 or 30% controlled-release urea supplement (CRUS) (diets 1, 2, 3 and 4, respectively). Average ruminal pH did not differ among diets (P>0.05), but during the first 6h of sampling tended to be higher for CRUS diets. Ammonia concentrations were higher (P<0.01) in all treatments over controls, indicating microbial protein generation. Acetic acid production (mM/1) decreased (P<0.05), propionic acid increased (P<0.05), while butyric acid production did not differ among CRUS diets and controls (P>0.05). Total amounts of ruminal VFA were lowest (P<0.01) in controls, while CRUS diets produced more of these energy sources. Supplementation of the high fiber diets with 10, 20 or 30% CRUS increasingly improved rumen fermentation, ammonia supply and VFA production. The results show that low quality forages (up to 70% DMI) can be used efficiently by sheep when conditions for ruminal microorganism are improved with a controlled-release urea supplement. PMID:11230963

  7. [Use of sugar cane harvest residues in cattle fattening in the Republic of Cuba. 1. The physical and chemical composition of the residues and the effect of NaOH treatment on their in vitro and in vivo digestibility].

    PubMed

    Hanke, R; Legel, S; Martin, P C

    1985-12-01

    The harvesting remains of sugar cane (crowns, leaves, sheaths, parts of stalks), which are rich in crude fibre, were investigated. The content of crude nutrients, their digestibility and the energy concentration of the harvesting remains largely correspond to the values of cereal straw. After the treatment with growing amounts of NaOH (0, 4, 6, 8, 10 g/ 100 g DM) a significantly increasing digestibility of the dry matter (31.9, 47.0, 56.1, 61.9, 67.6%) was ascertained in in-vitro experiments. In digestibility experiments with wethers an increased digestibility of the dry matter from 36.6 to 57.6% and of the energy from 39.3 to 56.2% after the treatment with 4 g NaOH/100 g DM could be ascertained in comparison with untreated harvesting remains. Energy concentration increased from 324 to 445 EFU cattle/kg DM and thus approached that of the hay of Bermuda grass (Cynodon dactylon), one of the most important fodder grasses of Cuba. After the feeding of harvesting remains treated with NaOH significant changes in the water and mineral metabolism could be ascertained. PMID:4096638

  8. The family II carbohydrate-binding module of xylanase CflXyn11A from Cellulomonas flavigena increases the synergy with cellulase TrCel7B from Trichoderma reesei during the hydrolysis of sugar cane bagasse.

    PubMed

    Pavón-Orozco, Patricia; Santiago-Hernández, Alejandro; Rosengren, Anna; Hidalgo-Lara, María Eugenia; Stålbrand, Henrik

    2012-01-01

    Synergy between Cellulomonas flavigena xylanase CflXyn11A and Trichoderma reesei endoglucanase TrCel7B was assessed during hydrolysis of alkaline pretreated sugar cane bagasse (SCB) after 12-48 h, applying the individual enzymes and mixtures of the enzymes. A high degree of synergy (6.3) between CflXyn11A and TrCel7B in hydrolysis of SCB was observed after 12h in the equimolar mixture. A threefold decrease in the degree of synergy was observed with TrCel7B and the catalytic module of CflXyn11A; suggesting an important role played by the carbohydrate-binding module of CflXyn11A (CflXyn11A-CBM) in the observed synergy. Affinity electrophoresis and binding assays showed that CflXyn11A-CBM binds to xylans and to a lesser extent to cellulose. Our results suggest that synergy is more pronounced at early stages of hydrolysis. Furthermore, for the first time it is described that a CBM carried by a xylanase significantly enhances the synergy with a cellulase (threefold increase in synergy). PMID:22169213

  9. How to manage cane in the field and factory following damaging freezes

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The exposure of sugar cane to damaging frosts occurs in approximately 25% of the sugar cane producing countries world-wide. A series of damaging freezes, -2.6, -3.3 and -2.1°C, occurred in Morocco on 4, 5 and 13 February 2012, respectively, only 2 weeks after the commencement of the harvest season. ...

  10. ECOSTATIC CANE PROCESSING SYSTEM PROTOTYPE PHASE

    EPA Science Inventory

    The overall objective of this project was to demonstrate a systems environmental management approach, from field to final product, for the processing of raw cane sugar. Specific sub-systems which were to be developed and demonstrated as part of this systems approach were: (a) har...

  11. Salmonellae in the African great cane rat (Thryonomys swinderianus).

    PubMed

    Oboegbulem, S I; Okoronkwo, I

    1990-01-01

    Because of its large size, the African great cane rat (Thryonomys swinderianus) is valued for food and has become a popular meat in western Africa. A survey was conducted to determine the occurrence of salmonellae in cane rats. Ten strains of Salmonella sp. were isolated from eight of 25 (32%) cane rats. Salmonella ajiobo was isolated from the spleen and intestines of three cane rats; S. agama was obtained from the spleen, liver and intestines of three animals; and S. poona was isolated from the spleen and liver of two cane rats. The occurrence of salmonellae in T. swinderianus is a potential public health hazard. Humans may become exposed to infection by consumption of inadequately cooked infected cane rat meat, or by eating vegetables, sugar cane and fruits contaminated with excretions of carrier cane rats. Incidents of human salmonellosis attributable to cane rat meat have not yet been reported; however, all three serotypes isolated from the cane rats have also been isolated from stools of patients suffering from gastroenteritis in Nigeria. PMID:2304192

  12. 30. RW Meyer Sugar Mill: 18761889. Threeroll sugar mill: oneton ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    30. RW Meyer Sugar Mill: 1876-1889. Three-roll sugar mill: one-ton daily processing capacity. Manufactured by Edwin Maw, Liverpool, England, ca. 1885-1870. View: Masonry-lined passage-way leading to the mill at the center of its circular masonry enclosure. The passageway permitted cane to be carried to the mill and cane trash (bagasse) to be carried away. Bridges over the passageways, no longer in place, permitted the mill animals to circle and power the mill from above. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  13. Sugar crops for fuel alcohol

    SciTech Connect

    Irvine, J.E.

    1980-01-01

    The use of alcohol rather than petroleum as a fuel source would require a large amount of land and suitable crops. Acerage now in use for food crops and animal production in the USA is given. The author presents alternatives to present land use in order to free acreage for energy crops such as sorghum, sugar beets, and sugar cane. (DC)

  14. Group 16SrXI phytoplasma strains, including subgroup 16SrXI-B and a new subgroup, 16SrXI-D, are associated with sugar cane white leaf.

    PubMed

    Zhang, Rong-Yue; Li, Wen-Feng; Huang, Ying-Kun; Wang, Xiao-Yan; Shan, Hong-Li; Luo, Zhi-Ming; Yin, Jiong

    2016-01-01

    Sugar cane white leaf (SCWL) is a serious disease caused by phytoplasmas. In this study, we performed nested PCR with phytoplasma universal primer pairs (P1/P7 and R16F2n/R16R2) for the 16S rRNA gene to detect SCWL phytoplasmas in 31 SCWL samples collected from Baoshan and Lincang, Yunnan, China. We cloned and sequenced the nested PCR products, revealing that the 16S rRNA gene sequences from 31 SCWL samples were all 1247?bp in length and shared more than 99?% nucleotide sequence similarity with the 16S rRNA gene sequences of SCWL phytoplasmas from various countries. Based on the reported 16S rRNA gene sequence data from SCWL isolates of various countries, we conducted phylogenetic and virtual RFLP analysis. In the resulting phylogenetic tree, all SCWL isolates clustered into two branches, with the Lincang and Baoshan SCWL phytoplasma isolates belonging to different branches. The virtual RFLP patterns show that phytoplasmas of the Lincang branch belong to subgroup 16SrXI-B. However, the virtual RFLP patterns revealed by HaeIII digestion of phytoplasmas of the Baoshan branch differed from those of subgroup 16SrXI-B. According to the results of phylogenetic and virtual RFLP analysis, we propose that the phytoplasmas of the Baoshan branch represent a new subgroup, 16SrXI-D. These findings suggest that SCWL is caused by phytoplasmas from group 16SrXI, including subgroup 16SrXI-B and a new subgroup, 16SrXI-D. PMID:26508111

  15. Glass-Ceramic Material from the SiO2-Al2O3-CaO System Using Sugar-Cane Bagasse Ash (SCBA)

    NASA Astrophysics Data System (ADS)

    Teixeira, S. R.; Romero, M.; Ma Rincón, J.; Magalhães, R. S.; Souza, A. E.; Santos, G. T. A.; Silva, R. A.

    2011-10-01

    Brazil is the world's largest producer of alcohol and sugar from sugarcane. Currently, sugarcane bagasse is burned in boilers to produce steam and electrical energy, producing a huge volume of ash. The major component of the ash is SiO2, and among the minor components there are some mineralizing agents or fluxing. Published works have shown the potential of transforming silicate-based residues into glass-ceramic products of great utility. This work reports the research results of SCBA use to produce glass-ceramics with wollastonite, rankinite and gehlenite as the major phases. These silicates have important applications as building industry materials, principally wollastonite, due to their special properties: high resistance to weathering, zero water absorption, and hardness among others. The glasses (frits) were prepared mixing ash, calcium carbonate and sodium or potassium carbonates as flux agents, in different concentrations. X-ray fluorescence was used to determine the chemical composition of the glasses and their crystallization was assessed by using thermal analysis (DTA/DSC/TGA) and X-ray diffraction. The crystallization kinetics was evaluated using the Kissinger method, giving activation energies ranging from 200 to 600 kJ/mol.

  16. Sugar cane bagasse as a possible source of fermentable carbohydrates. I. Characterization of bagasse with regard to monosaccharide, hemicellulose, and amino acid composition

    SciTech Connect

    du Toit, P.J.; Olivier, S.P.; van Biljon, P.L.

    1984-01-01

    Hemicellulose fractions of plant materials have recently attracted attention as a possible source of fermentable sugars to be used via fermentation for the production of liquid fuels, mainly ethanol. Individual monosaccharides present in bagasse hemicellulose were determined using HPLC and other chromatographic procedures. The presence of higher oligomers of the monosaccharides could also be determined. The pentosan fraction of bagasse was successfully hydrolyzed and extracted with 5% (m/v) HCl, and the rate of release of individual monosaccharides was determined. Xylose was the main component in the hydrolyzates, while glucose, arabinose, and galactose present in the side chains of the pentosans were initially released at a fast rate. This treatment resulted in obtaining 229 mg/g xylose (85% of theoretical maximum) and 44 mg/g glucose from bagasse. Only arabinose (2.8 mg/g) and galactose (0.75 mg/g) was also present in detectable quantities. A total of 309 mg monosaccharides were obtained from 1 g of bagasse by this treatment. The results indicated that hydrolysis conditions for specific plant materials depend on the composition of the specific material being utilized. A part of the pentosan fraction (77.1%) was hydrolyzed at a high rate, while 22.9% was more stable and hydrolyzed more slowly. Although 39.8% dry bagasse could be obtained in solution by treatment with dilute alkali, only about 72% of the available hemicelluloses could be extracted in this way if the bagasse was not delignified beforehand. Amino acids and peptides or proteins were also extracted to very much the same extent with the alkali.

  17. Botryosphaeria Cane Canker

    Technology Transfer Automated Retrieval System (TEKTRAN)

    One of the more serious cane canker diseases of thornless blackberry plants in the eastern U.S. is caused by Botryosphaeria dothidea. Cane canker disease is highly destructive, often killing canes and reducing fruit yields to uneconomic levels. Cankers generally develop around one or more buds on th...

  18. The energy cane alternative

    SciTech Connect

    Alexander, A.G.

    1985-01-01

    This book reviews the conceptual and theoretical background of Saccharum botany, which underlies the growing of cane as a total growth commodity. Management details are provided for energy cane planting, cultivation, harvest, and postharvest operations. Chapters on energy cane utilization stress new developments in lignocellulose conversion plus alternative options for fermentable solids usage. Chapters are also included for the management of alternative grasses to supplement energy cane, and the breeding of new hybrid canes with high biomass attributes at the intergeneric and interspecific levels.

  19. 2. RW Meyer Sugar Mill: 18761899. Threeroll sugar mill, oneton ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. RW Meyer Sugar Mill: 1876-1899. Three-roll sugar mill, one-ton daily processing capacity. Manufactured by Edwin Maw, Liverpool, England, ca. 1855-1870. View: Top roll and one bottom roll, mill housing or cheeks, and spur pinion gears. The broken projection on the mill beside the bottom roll indicates the location of the cane tray. The cane juice crushed from the cane flowed into the juice tray below the bottom rolls. It then flowed into a wooden gutter and through a short tunnel in the mill's masonry enclosure and on to the boiling house for further processing. The opening at the base of the masency wall (In the photograph) is where the gutter ran from the mill to the boiling house. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  20. Potential production of energy cane for fuel in the Caribbean

    SciTech Connect

    Samuels, G.

    1984-12-01

    Sugarcane presents a tremendous potential as a renewable energy source for the non-oil producing countries of the Caribbean. The energy cane concept is sugarcane managed for maximum dry matter (total fermentable solids for alcohol fuel and combustible solids for electricity) rather than sucrose. The use of sugarcane as a renewable energy source can provide a solution, either partial or total, to the Caribbean energy problem. Sugar cane production and the use of this crop as a renewable energy source are described.

  1. Elevation of a cane-growing area of the state of Sao Paulo using LANDSAT data

    NASA Technical Reports Server (NTRS)

    Dejesusparada, N. (Principal Investigator); Mendonca, F. J.; Lee, D. C. L.; Tardin, A. T.; Shimabukuro, Y. E.; Chen, S. C.; Lucht, L. A. M.; Moreira, M. A.; Delima, A. M.; Maia, F. C. S.

    1981-01-01

    Images at a scale of 1:250.000 were visually interpreted for identification and area estimates of sugar cane plantations in Sao Paulo. The basic criteria for crop identification were the spectral characteristics of channels 5 and 7 and their temporal variations observed from different LANDSAT passes. Using this technique, it was possible to map the sugar cane areas as well as the sugar cane already harvested. An area of 801,950 hectares was estimated within the study area. The confidence interval of correct classification ranged from 87.11% to 94.71%.

  2. 12. RW Meyer Sugar Mill: 18761889. Threeroll sugar mill: oneton ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. RW Meyer Sugar Mill: 1876-1889. Three-roll sugar mill: one-ton daily processing capacity. Manufactured by Edwin Maw, Liverpool, England, ca. 1855-1870. View: Historical view, 1934, T.T. Waterman Collection, Hawaiian Sugar Planters' Association, Oahu, Hawaii. Masonry-lined passageway leading to the mill at the center of its circular masonry enclosure. The passageway permitted cane to be carried to the mill and cane trash (bagasse) to be carried away after milling. Bridges over the passageways, not in place, permitted the mill animals to circle and power the mill from above. View shows area prior to substantial overgrowth existing in 1978 views of the area. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  3. Free-Standing Canes.

    ERIC Educational Resources Information Center

    Ehresman, Paul

    1995-01-01

    A precane device, called the "free-standing cane," was developed to help children with blindness along with other disabilities. The cane detects obstacles; guides the user's hands into a relaxed, static position in front of the hips; facilitates postural security and control; and offers tactile and kinesthetic feedback. (JDD)

  4. Analysis of sucrose from sugar beet

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Sucrose is a disaccharide composed of the monosaccharides glucose and fructose. Sucrose is a product of photosynthesis and is a key carbohydrate resource for growth and metabolism in many organisms. Economic sources of sucrose include sugar cane and sugar beet, where fresh weight sucrose concentrati...

  5. Path analysis of agro-industrial traits in sweet sorghum.

    PubMed

    Lombardi, G M R; Nunes, J A R; Parrella, R A C; Teixeira, D H L; Bruzi, A T; Durães, N N L; Fagundes, T G

    2015-01-01

    Sweet sorghum has considerable potential for ethanol production due to its succulent stalks that contain directly fermentable sugars. Since many traits need to be considered in the selection process to breed superior cultivars for ethanol production, then correlations between the traits might be of use to help the breeder define optimal improvement strategies. The aim of this study was to investigate the association between the principal agro-industrial traits in sweet sorghum, and to evaluate the direct and indirect effects of primary and secondary traits on ethanol production per hectare. In total, 45 sweet sorghum genotypes (lineage/hybrids) were evaluated in an experiment designed in an alpha lattice 5 x 9. The data were analyzed using a mixed model approach. A detailed study of simple correlations was accomplished using path analysis. The experimental precision was high, with an accuracy above 76%. The various genotypes showed genetic variation for all agronomic and industrial traits, except stalk diameter. Some agro-industrial traits showed significant simple correlations with ethanol production, but according to the path analysis, some of these traits did not show a significant direct or indirect effect on ethanol production. The results highlighted the primary and secondary traits with practical relevance to sweet sorghum breeding, since they showed director indirect effects on ethanol production. PMID:26662435

  6. 75 FR 23631 - Sugar Re-Export Program, the Sugar-Containing Products Re-Export Program, and the Polyhydric...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-04

    ... withdrawing the proposed rule published at 70 FR 3150 on January 21, 2005, to implement Chapter 17 of the...; ] DEPARTMENT OF AGRICULTURE Foreign Agricultural Service 7 CFR Part 1530 Sugar Re-Export Program, the Sugar... cane sugar under subheading 1701.11.20 of the HTS for the production of polyhydric alcohols,...

  7. Report on the engineering and economics of an ethanol/gasohol joint-venture project with Caldwell Sugars Co-op, Inc. at Thibodaux, Louisiana

    SciTech Connect

    Not Available

    1982-04-01

    The definitive availabilities and costs of the following feedstocks are assessed: sugar cane, sweet sorghum, cane, and molasses. The following are included: details of the project area in relation to the availability of nonstorable feedstocks; sugar cane availability and costs; sweet sorghum availability and costs; cane availability and costs, including identification of source of supply and byproduct marketing; molasses availability and costs, including local sources of supply and byproduct marketing, and net feedstocks costs of ethanol. Sugar cane, sweet sorghum, and molasses are investigated primarily as possible alternative local feedstocks to corn to meet the requirements of the Louisiana Gasohol Act.

  8. Effects of D-003, a mixture of high-molecular-weight sugar cane wax acids, on lipid peroxidation markers in older individuals: A randomized, double-blind, placebo-controlled study

    PubMed Central

    Pérez, Yohani; Menéndez, Roberto; Ferrer, José I.; Lopez, Ernesto; Castaño, Gladys; Fernández, Julio; Ferreiro, Rosa M.; Fernández, Lilia; Mendoza, Sarahí; González, Rosa; Mesa, Melbis

    2008-01-01

    Background: Aging is associated with increased lipid peroxidation (LP). D-003, a mixture of long-chain aliphatic primary acids purified from sugar cane wax, has been found to inhibit LP in experimental models and in healthy subjects. Objectives: The aim of this study was to assess the effects of D-003 on LP markers and the lipid profile of older individuals. Methods: This randomized, double-blind, placebo-controlled study was conducted at the Plaza Veterans' House, Havana City, Cuba. Male and female patients aged ?60 years with total cholesterol values of <6.1 mmol/L were eligible for inclusion in the study. After a 3-week lead-in and baseline assessment period, patients were randomized to receive PO D-003 5 mg/d, D-003 10 mg/d, or placebo for 8 weeks. The effect on copper-induced LP of low-density lipoprotein (LDL) particles was the primary variable, and the effects on plasma total antioxidant status (TAS), plasma malondialdehyde (MDA) concentration, plasma antioxidant enzyme (superoxide dismutase and glutathione peroxidase) activities, and the lipid profile were secondary variables. A clinical examination was performed at each visit (baseline, weeks 4 and 8). A clinical examination, LP, and blood tests (lipid profile, hematologic, and blood biochemistry safety indicators) were performed at baseline and after 8 weeks of treatment. Compliance and adverse events (AEs) were assessed at weeks 4 and 8. A 2-tailed P < 0.05 was considered statistically significant for comparisons of both continuous and categoric variables. Results: Fifty-four patients aged ?60 years were assessed for inclusion in the study, and 51 patients (40 women, 11 men; mean [SD] age, 67 [6] years) were included in the study. The lag phase of conjugated diene formation increased significantly and in a dose-dependent manner in the group treated with D-003 5 mg (24.7%; P < 0.01) and in the group treated with D-003 10 mg (29.3%; P < 0.01) compared with placebo. The maximal rate of conjugated diene propagation decreased significantly in the D-003 5- and 10-mg groups ?22.7% and ?25.8%, respectively; both, P < 0.05) compared with placebo. TAS increased significantly (17.7% and 23.0%, respectively; both, P < 0.01) in both active treatment groups compared with placebo. Plasma MDA concentration decreased significantly in the D-003 10-mg group (?28.6%; P < 0.05) but not in the D-003 5-mg group, compared with placebo. These changes were also significant compared with baseline. Antioxidant enzyme activities did not change in the active treatment groups compared with placebo or baseline. In the D-003 5- and 10-mg groups, significant decreases were found in LDL cholesterol concentration (?15.8% and ?23.8%, respectively; both, P < 0.001) and total cholesterol concentration (?13.0% and ?16.8%, both, P < 0.05) compared with placebo. High-density lipoprotein cholesterol concentration increased significantly in the D-003 5-mg group (5.7%; P < 0.05) and the D-003 10-mg group (18.2%; P < 0.001) compared with placebo. Changes in the lipid profile were also significant compared with baseline. In the placebo group, no variable changed significantly compared with baseline. D-003 was well tolerated at both dose levels, and no patient withdrew from the study. There were a total of 3 AEs reported: insomnia and acidity in 2 patients receiving placebo; and heartburn in 1 patient receiving D-003 5 mg. Conclusions: D-003 5 and 10 mg/d administered to these older individuals (aged ?60 years) for 8 weeks inhibited LP of LDL and increased TAS in a dose-dependent manner, while plasma MDA concentration decreased in the patients receiving D-003 10 mg/d only. D-003 was well tolerated at both doses PMID:24692781

  9. Energy cane as a multiple-products alternative

    SciTech Connect

    Alexander, A.G.

    1984-01-01

    CANE SUGAR planting as it was formerly known is in serious and essentially irreversible trouble. Diversification of sugarcane to alternative farm crops is indicated in some instances. Yet, for the most part, the more logical alternative is an internal diversification to a multiple-products biomass commodity. Sometimes termed the energy cane approach, its keystones are the management of sugarcane as a quantitative rather than qualitative entity, and the inclusion of certain tropical-grass relatives to assist cane in its year-round supply of biomass to industrial consumers. Managed in this way, absolute tonnages of whole cane are increased materially beyond what is possible from sugar-crop management. Juice quality declines but sugar yields are significant as a function of high biomass tonnages per acre. Usage of the lignocellulose can range from low-quality humid boiler fuel in furnaces designed for refuse incineration, to higher-quality fuels in more efficient boilers, to proprietary fuels and chemical products, and to lignocellulose supply as the feedstock for primary chemicals production. The latter might include, for example, synthesis gas and petrochemicals in tropical regions lacking natural gas, naphtha, or coal as starting materials. Diversification of sugarcane to completely new farm commodities is opposed in favor of internal diversification to a high-growth, multiple-products commodity. Decisive issues here are as much educational as they are technical. The energy cane concept maintains that sugarcane is a future resource of enormous national and international value. It should develop accordingly where decision-taking is by persons who respect the cane plant and who have done their homework on its alternative-use potentials. 35 references, 5 figures, 6 tables.

  10. Phosphorus speciation in agro-industrial byproducts: sequential fractionation, solution (31)P NMR, and P K- and L(2,3)-edge XANES spectroscopy.

    PubMed

    Negassa, Wakene; Kruse, Jens; Michalik, Dirk; Appathurai, Narayana; Zuin, Lucia; Leinweber, Peter

    2010-03-15

    Little is known about P species in agro-industrial byproducts from developing countries, which may be either pollutants or valuable soil amendments. The present study speciated P in dry (COD) and wet (COW) coffee, sisal (SIS), barley malt (BEB) and sugar cane processing (FIC) byproducts, and filter cakes of linseed (LIC) and niger seed (NIC)with sequential fractionation, solution (31)P nuclear magnetic resonance (NMR) spectroscopy, and P K- and L(2,3)-edge X-ray absorption near-edge structure (XANES) spectroscopy. The sequential P fractionation recovered 59% to almost 100% of total P (P(t)), and more than 50% of P(t) was extracted by H(2)O and NaHCO(3) in five out of seven samples. Similarly, the NaOH + EDTA extraction for solution (31)P NMR recovered 48-94% of P(t). The (31)P NMR spectra revealed orthophosphate (6-81%), pyrophosphate (0-10%), and orthophosphate monoesters (6-94%). Orthophosphate predominated in COD, COW, SIS, and FIC, whereas BEB, UC, and NIC were rich in orthophosphate monoesters. The concentrations of P(i), and P(o) determined in the sequential and NaOH + EDTA extractions and (31)P NMR spectra were strongly and positively correlated (r = 0.88-1.00). Furthermore, the P K- and L(2,3)-edge XANES confirmed the H(2)SO(4)--P(i) detected in the sequential fractionation by unequivocal identification of Ca--P phases in a few samples. The results indicate that the combined use of all four analytical methods is crucial for comprehensive P speciation in environmental samples and the application of these byproducts to soil. PMID:20146464

  11. Cogeneration in the Hawaiian sugar industry

    SciTech Connect

    Kinoshita, C.M.

    1990-01-01

    For nearly a century the Hawaiian sugar industry has produced most of the steam and electricity needed to process sugarcane and to power its factories and irrigation pumps. Judicious use of bagasse and cane trash has made the Hawaiian sugar industry among the most efficient in the world in converting biomass into electricity --- in comparison with typical worldwide cane-to-electricity productivities of {approximately}10 kWh per ton of cane, Hawaiian sugar factories today generate, on average, about 60 kWh per ton of cane and, in some factories, 100 kWh or more. Plantations in Hawaii produce about 800 million kWh annually, and, after satisfying virtually all of their internal power requirements, export roughly 400 million kWh to public utility companies. To attain world prominence in generating and exporting power from bagasse, Hawaiian sugar companies have had to address numerous technical, operational, regulatory, and contractual issues relating to the production and distribution of steam and electricity. Prior to 1970 the development of electricity generation in the Hawaiian sugar industry was shaped almost entirely by technical developments --- better utilization of the available biomass resources; consolidation of steam-generation facilities into fewer, larger, and more efficient units; and increased operating pressures and temperatures of steam and electrical generating units and better heat recovery to achieve higher thermal efficiency in the cogeneration plant. In more recent years, however, non-technical issues have influenced electricity generation and sale more than technical factors. 20 figs., 5 tabs.

  12. 76 FR 46267 - Increase in Fiscal Year 2011 Specialty Sugar Tariff-Rate Quota; Determination of Total Amounts of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-02

    ... Office of the Secretary Increase in Fiscal Year 2011 Specialty Sugar Tariff-Rate Quota; Determination of Total Amounts of Fiscal Year 2012 Tariff-Rate Quotas for Raw Cane Sugar and Certain Sugars, Syrups and Molasses; and Extension of Entry Period for the Fiscal Year 2012 Raw Sugar Tariff- Rate Quota...

  13. 17. RW Meyer Sugar Mill: 18761889. Boiling House, 1878. View: ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. RW Meyer Sugar Mill: 1876-1889. Boiling House, 1878. View: Southwest corner of boiling house. The amimal-powered cane mill is located in the undergrowth in the right foreground, - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  14. Novel Crystalline SiO2 Nanoparticles via Annelids Bioprocessing of Agro-Industrial Wastes

    NASA Astrophysics Data System (ADS)

    Espíndola-Gonzalez, A.; Martínez-Hernández, A. L.; Angeles-Chávez, C.; Castaño, V. M.; Velasco-Santos, C.

    2010-09-01

    The synthesis of nanoparticles silica oxide from rice husk, sugar cane bagasse and coffee husk, by employing vermicompost with annelids ( Eisenia foetida) is reported. The product ( humus) is calcinated and extracted to recover the crystalline nanoparticles. X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and dynamic light scattering (DLS) show that the biotransformation allows creating specific crystalline phases, since equivalent particles synthesized without biotransformation are bigger and with different crystalline structure.

  15. Novel Crystalline SiO2 Nanoparticles via Annelids Bioprocessing of Agro-Industrial Wastes

    PubMed Central

    2010-01-01

    The synthesis of nanoparticles silica oxide from rice husk, sugar cane bagasse and coffee husk, by employing vermicompost with annelids (Eisenia foetida) is reported. The product (humus) is calcinated and extracted to recover the crystalline nanoparticles. X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and dynamic light scattering (DLS) show that the biotransformation allows creating specific crystalline phases, since equivalent particles synthesized without biotransformation are bigger and with different crystalline structure. PMID:20802789

  16. From Wheelchair to Cane

    PubMed Central

    Mayo, Amanda; Berbrayer, David

    2015-01-01

    ABSTRACT Spina bifida is associated with foot deformities, which may lead to foot ulcers, osteomyelitis, and limb amputation. Calcanectomy and Symes amputations have been reported successful in spina bifida. There is lack of evidence for transtibial amputations. This case describes a 27-yr-old woman with L4 level spina bifida who underwent bilateral transtibial amputations. She ambulated with bilateral ankle foot orthoses and canes until age 22. At age 22, she had bilateral foot reconstructive surgeries complicated by nonunion, ulcerations, and osteomyelitis. She was using a wheelchair by age 25. She had elective bilateral transtibial amputations at age 27 for progressive osteomyelitis. Four weeks after amputations, she was fit with bilateral prostheses. On completion of 2 mos of rehabilitation, she ambulated with a cane. This case demonstrates good functional outcomes after transtibial amputations in a young spina bifida patient. Prosthetic fitting should be considered for similar, previously high functioning spina bifida patients with transtibial amputation(s). PMID:26259056

  17. Sugar Beet

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Sugar beet (Beta vulgaris L.) is a significant industrial crop of the temperate zone, the worldwide production of which exceeded 240 million tons in 2000. Worldwide, sugar from sugar beet provides about a third of all sugar consumed. Used as a sweetener in foods, beverages and pharmaceuticals, sug...

  18. The Greenhouse Gas Flux and Carbon Budget of Land Use Conversion from Pasture to Energy Cane Production

    NASA Astrophysics Data System (ADS)

    Duval, B.; Davis, S. C.; Parton, W. J.; Long, S. P.; DeLucia, E. H.

    2011-12-01

    The United States is committed to produce 140 billion liters of ethanol by 2022. To meet this goal, and mitigate concerns about the "fuel versus food" conundrum, there is a pressing need for a second generation of sustainable biofuel feedstocks. Energy cane is a high yield, cold-tolerant C4 grass that can be efficiently used to produce bio-ethanol via existing cellulo-lignosic conversion technologies. There is exciting promise for Energy cane as an ethanol feedstock, however the climate implications of large-scale land use change from pasture (a significant use of land in the Southeastern USA) to production of an energy grass has not been fully explored. Furthermore, the soil type on which Energy cane will be grown will likely have a significant impact on greenhouse gases (GHG). We use DAYCENT, a process based biogeochemical model, to forecast how land use change from pasture to Energy cane production influences ecosystem level GHG flux and soil carbon flux. Because Energy cane is not widely cultivated, we use the available sugar cane literature to validate our in silico experiments. DAYCENT simulations suggest that soil type and fertilization rates have a strong control on the GHG and soil C dynamics after changing land from pasture to Energy cane. Our model results show net losses of ecosystem level C when Energy cane is grown on Histosols (organic matter rich soils), and a net gain of ecosystem C when that crop is grown on Spodosols (sandy soils). Respired CO2, N2O and total GHG efflux is significantly higher on Histosols compared to Spodosols in cane production. We conclude that the soil type on which Energy cane is grown determines the climatic impact of changing a landscape from pasture to Energy cane, and the greatest long-term climate benefit comes from growing cane on Spodosols.

  19. 13C-IRIS: an improved method to detect the addition of low levels of C4-derived sugars to juices.

    PubMed

    Day, M P; Correia, P; Hammond, D A

    2001-01-01

    A method to improve the detection of cane or corn sugar addition to fruit juices has been developed. This involves the isolation of the individual sugars and measurement of their carbon isotope ratios. Using the Isotopic Relations of Individual Sugars approach, the additions of cane sucrose or cane invert as low as 4% of the total sugars can be detected in orange juice. This method offers a significant improvement over the conventional carbon isotopic method that has a detection limit of about 10%. PMID:11417659

  20. Green-cane harvest of sugarcane effects on biomass and energy yields and nutrient removal

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Sugarcane yields in Louisiana can approach 40 dry Mg ha-1, making sugarcane an attractive biofuel feedstock as well as a profitable sugar crop. Existing technology used in green-cane harvesting can be used to allow chopper harvester extractor fans to remove variable amounts of extraneous leaf materi...

  1. [Effects of sugarcane-soybean intercropping on cane yield, quality and economic benefit under low nitrogen condition].

    PubMed

    Yang, Jian-bo; Peng, Dong-hai; Qin, Liu-dong; Xing, Yong-xiu; Li, Yang-rui; Yang, Li-tao

    2015-05-01

    To explore the effects of sugarcane-soybean intercropping on cane yield, quality and economic benefit, three sugarcane cultivars (B8, ROC22 and GT21) planted under sugarcane monoculture and sugarcane-soybean intercropping with low nitrogen fertilization (urea application of 150 kg · hm(-2)). The field design was a split-plot with the cropping pattern being the principal factor and the sugarcane cultivar being the secondary factor. The results showed that the millable stalks, stalk diameter, cane yield and sugar production were significantly affected by sugarcane-soybean intercropping while the cane quality wasn' t changed obviously. Compared with sugarcane monoculture, the stalk diameter, millable stalks, cane yield and sugar production in the intercropping system were increased by 5.1%-8.7%, 7.9%-31.0%, 9.0%-40.5% and 5.6%-39.5%, respectively. The total incomes of cane and soybean, and sugar and soybean were increased by 58900-79300 yuan · hm(-2) and 58300-77200 yuan · hm(-2), respectively. Among the three sugarcane cultivars in the sugarcane-soybean intercropping pattern, the economic benefit was the highest in ROC22, while the ratoon cane yields of GT21 and B8 were higher than that of ROC22. The results also indicated that sugarcane-soybean intercropping is an effective planting method to reduce nitrogen fertilizer application and increase economic income in sugarcane production. PMID:26571661

  2. Sugar Substrates for l-Lysine Fermentation by Ustilago maydis

    PubMed Central

    Sánchez-Marroquín, A.; Ledezma, M.; Carreño, R.

    1970-01-01

    The extracellular production of l-lysine in media with cane sugar, blackstrap molasses, or clarified sugar-cane juice by a previously obtained mutant of Ustilago maydis was studied. Enzymatically inverted clarified juice (medium J-3) gave 2.9 g of lysine per liter under the following conditions: inoculum, 5%; pH 5.8; temperature, 30 C; KLa in the fermentors, 0.41 mmoles of O2 per liter per min; fermentation time, 72 hr. The concentrate, obtained by direct evaporation and drying of the fermentation broth, could be used as a possible feed supplement because of its amino-acid and vitamin content. PMID:5485081

  3. Improving the performance of the Granulosis virus of Codling moth (Lepidoptera: Tortricideae) by adding the yeast Saccharomyces cerevisiae with sugar

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Studies evaluated the effectiveness of adding Saccharomyces cerevisiae with brown cane sugar (sugar) to the codling moth granulosis virus, CpGV, to improve larval control of Cydia pomonella (L.), on apple. Neither the use of the yeast or sugar alone caused larval mortality greater than the water con...

  4. Alkaline degradation of invert sugar from molasses.

    PubMed

    Yang, Byung Y; Montgomery, Rex

    2007-11-01

    Sugar beet and sugar cane molasses have been shown to be suitable starting materials for producing de-icer preparations. The sucrose in the molasses is hydrolyzed to glucose and fructose by invertase. The reducing sugars are then degraded by NaOH, the alkali being neutralized by the sugar acids produced, resulting in an increase of the ionic strength and consequently depression of the freezing point of the resulting solution. For the preparation of de-icers, the desired freezing point depression to a temperature of less than about -20 degrees C can be achieved by adjusting the amount and concentration of the alkali metal hydroxide used. The resulting products are biodegradable and eliminate the corrosive effects associated with the use of conventional chloride salts. Degradation of invert sugar by NaOH has been achieved without an external heat source. The reaction products showed the same freezing point depression as seen in the degradation products from pure glucose. PMID:17222551

  5. Sweeteners - sugars

    MedlinePLUS

    ... from corn starch. Lactose (milk sugar) is the carbohydrate that is in milk. It is made up ... amounts of these foods in place of other carbohydrates. If you have diabetes: Sugars affect blood glucose ...

  6. Added Sugars

    MedlinePLUS

    ... fruit punch); dairy desserts and milk products (ice cream, sweetened yogurt and sweetened milk); and other grains ( ... Tips for Reducing Sugar in Your Diet Simple Cooking with Heart Added Sugar is not so Sweet ...

  7. Blood Sugar

    MedlinePLUS

    Blood sugar, or glucose, is the main sugar found in your blood. It comes from the food you eat, and is your body's main source of energy. Your blood carries glucose to all of your body's cells to use ...

  8. Sugar Beet

    Technology Transfer Automated Retrieval System (TEKTRAN)

    World-wide demand for sugar approaches 140Mt each year, and is supplied by only two plants, once of which is the sugar beet (Beta vulgaris, L.). A team of international researchers were assembled by the editor to review the body of literature on sugar beet production and assemble it into an accessi...

  9. Grape cane gallmaker (Coleoptera: Curculionidae) and its impact on cultivated grapes.

    PubMed

    Saunders, M C; Tobin, P C

    2000-06-01

    The grape cane gallmaker, Ampeloglypter sesostris (Leconte), is a native weevil that infests new shoots of wild and cultivated grapes (Vitis spp.). Females oviposit on the tender portions of new shoots, producing a reddish gall that can expand the shoot to twice its normal diameter. These galls can be quite numerous in eastern vineyards, and their effects are unknown. We studied the spatial distribution of grape cane gallmaker and its impact on berry size, sugar content, and nutrient and mineral uptake. We observed spatial trends in grape cane gallmaker distribution in vineyards adjacent to woodland margins, with the trend emanating from the woodline. In vineyards without woodland margins, there was little spatial dependency in grape cane gallmaker distribution in individual years. However, grape cane gallmaker density on a single vine was spatially cross-correlated between 2 yr. The presence of galls did not significantly affect berry quality, or the uptake of nutrients and minerals, and we conclude that grape cane gallmaker does not negatively impact berry quality or mature vine vigor. PMID:10902332

  10. 14. RW Meyer Sugar Mill: 18761889. Sorghum Pan. Manufactured by ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. RW Meyer Sugar Mill: 1876-1889. Sorghum Pan. Manufactured by John Nott & Co., Honolulu, Hawaii, 1878. View: In the sorghum pan, heat was applied to the cane juice to clarify it, evaporate its water content, and concentrate the sugar crystals. The pan was set on a slope so that the juice would move through the compartments by gravity. The hand-lever sluice valves in the partition walls between the compartments permitted the sugar boiler to regulate the movement of batches of cane juice flowing through the pan. The metal fins projecting from the bottom of the pan imparted a circuitous route to the juice as it flowed through the pan--this made it flow over a much greater heated surface. The fins also supplemented the pan's heating surface by ... - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  11. Biophenols from agro-industrial wastes.

    PubMed

    Jamal, P; Alam, M Z; Suhani, F

    2008-07-01

    Large quantities of agro-based liquid wastes are produced every year and their disposal is often a problem for industries. In light of that, in this study prudent effort was done to screen the agro-industrial wastes - pineapple waste (PAW) and palm oil mill effluent (POME) for valuable biophenols product. Three different solvents; ethanol, acetone and distilled water were screened in order to enhance the process. All experiments were performed using fixed process conditions of solid to solvent ratio, temperatures, time and agitation speed. Effectiveness of extraction process to produce biophenol was based on high amount with more activity. POME was selected as potential source with biophenol content of 125.42 mg/L GAE. PMID:19025008

  12. [Grape sugar manufacture assays under Premier Empire].

    PubMed

    Fournier, J

    1999-01-01

    The Continental Blockade was established by the Decree of Berlin (1806). Scientists, manufacturers, and politicians were interested in grape sugar as a substitute for cane sugar. Grape sugar had been extracted and refined by Proust (1754-1826), in Spain, on a laboratory scale. He was invited by the Government to search a way of producing grape sugar on an industrial scale. As a scientist, he accompanied manufacturers in their assays. The matter is closed about 1811. It throws light on aspects of scientist's relationship, and part of authorities in the birth and failure of an agricultural industry. It signs the transition from an economic system directed by the Government to a system managed by manufactuers. This story forcasts the partition between scientists and manufacturers which will increase in France during all the century. As his compatriot Volney, Proust was an ideologue, searching for basic, general laws and useful science. PMID:11625526

  13. VIEW OF SUGAR MILL RUINS LOOKING NORTH SHOWING CHIMNEY AT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF SUGAR MILL RUINS LOOKING NORTH SHOWING CHIMNEY AT LEFT AND MASONRY BASE OF STEAM ENGINE AND CANE MILL AT RIGHT - Hacienda Azucarera La Esperanza, Mill (Ruins), 2.65 miles North of PR Route 2 Bridge Over Manati River, Manati, Manati Municipio, PR

  14. 2. View of sugar mill ruins looking N showing chimney ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. View of sugar mill ruins looking N showing chimney at left and masonry base of steam engine and cane mill at right. - Hacienda Azucarera La Esperanza, Mill (Ruins), 2.65 miles North of PR Route 2 Bridge Over Manati River, Manati, Manati Municipio, PR

  15. Developing Sugar Cane as a Dedicated Energy Crop

    Technology Transfer Automated Retrieval System (TEKTRAN)

    High yield with low inputs, resistance to diseases, insects, and drought, adaptation to a wide range of soils and climates, and biomass composition that is optimized for end use are identified as important traits for cellulosic biomass crops. Sugarcane is one of the most efficient grass species in c...

  16. Sugar/Energy Canes as Feedstocks for the Biofuels Industry

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Corn is the principle feedstock used for the production of ethanol in the U.S. Yields of corn and the cost of production differ among regions of the U.S. with yields in the South generally being lower and cost of production higher. Hence, identification of alternative agronomic crops for the product...

  17. The Penicillium echinulatum secretome on sugar cane bagasse.

    PubMed

    Ribeiro, Daniela A; Cota, Júnio; Alvarez, Thabata M; Brüchli, Fernanda; Bragato, Juliano; Pereira, Beatriz M P; Pauletti, Bianca A; Jackson, George; Pimenta, Maria T B; Murakami, Mario T; Camassola, Marli; Ruller, Roberto; Dillon, Aldo J P; Pradella, Jose G C; Paes Leme, Adriana F; Squina, Fabio M

    2012-01-01

    Plant feedstocks are at the leading front of the biofuel industry based on the potential to promote economical, social and environmental development worldwide through sustainable scenarios related to energy production. Penicillium echinulatum is a promising strain for the bioethanol industry based on its capacity to produce large amounts of cellulases at low cost. The secretome profile of P. echinulatum after grown on integral sugarcane bagasse, microcrystalline cellulose and three types of pretreated sugarcane bagasse was evaluated using shotgun proteomics. The comprehensive chemical characterization of the biomass used as the source of fungal nutrition, as well as biochemical activity assays using a collection of natural polysaccharides, were also performed. Our study revealed that the enzymatic repertoire of P. echinulatum is geared mainly toward producing enzymes from the cellulose complex (endogluganases, cellobiohydrolases and ?-glucosidases). Glycoside hydrolase (GH) family members, important to biomass-to-biofuels conversion strategies, were identified, including endoglucanases GH5, 7, 6, 12, 17 and 61, ?-glycosidase GH3, xylanases GH10 and GH11, as well as debranching hemicellulases from GH43, GH62 and CE2 and pectinanes from GH28. Collectively, the approach conducted in this study gave new insights on the better comprehension of the composition and degradation capability of an industrial cellulolytic strain, from which a number of applied technologies, such as biofuel production, can be generated. PMID:23227186

  18. The Penicillium echinulatum Secretome on Sugar Cane Bagasse

    PubMed Central

    Ribeiro, Daniela A.; Cota, Júnio; Alvarez, Thabata M.; Brüchli, Fernanda; Bragato, Juliano; Pereira, Beatriz M. P.; Pauletti, Bianca A.; Jackson, George; Pimenta, Maria T. B.; Murakami, Mario T.; Camassola, Marli; Ruller, Roberto; Dillon, Aldo J. P.; Pradella, Jose G. C.; Paes Leme, Adriana F.; Squina, Fabio M.

    2012-01-01

    Plant feedstocks are at the leading front of the biofuel industry based on the potential to promote economical, social and environmental development worldwide through sustainable scenarios related to energy production. Penicillium echinulatum is a promising strain for the bioethanol industry based on its capacity to produce large amounts of cellulases at low cost. The secretome profile of P. echinulatum after grown on integral sugarcane bagasse, microcrystalline cellulose and three types of pretreated sugarcane bagasse was evaluated using shotgun proteomics. The comprehensive chemical characterization of the biomass used as the source of fungal nutrition, as well as biochemical activity assays using a collection of natural polysaccharides, were also performed. Our study revealed that the enzymatic repertoire of P. echinulatum is geared mainly toward producing enzymes from the cellulose complex (endogluganases, cellobiohydrolases and ?-glucosidases). Glycoside hydrolase (GH) family members, important to biomass-to-biofuels conversion strategies, were identified, including endoglucanases GH5, 7, 6, 12, 17 and 61, ?-glycosidase GH3, xylanases GH10 and GH11, as well as debranching hemicellulases from GH43, GH62 and CE2 and pectinanes from GH28. Collectively, the approach conducted in this study gave new insights on the better comprehension of the composition and degradation capability of an industrial cellulolytic strain, from which a number of applied technologies, such as biofuel production, can be generated. PMID:23227186

  19. [Sugar cane burning in Brazil: respiratory health effects].

    PubMed

    Ribeiro, Helena

    2008-04-01

    The article aimed to update scientific literature information about respiratory health effects caused by sugarcane burning, considering the expansion of sugarcane plantations in Brazil and in the state of São Paulo. Articles published between 1996 and 2006, which deal with the health effects of sugarcane burning and/or air pollutants originating from this burning, were discussed. These studies suggest that part of the population--especially the elderly, children and asthmatics--suffers health effects of sugarcane burning. As a result, these people require health care, thus affecting health services and their families. PMID:18327496

  20. Effects of seasonal variations of sugarcane stalk and extraneous matter quantity and quality as they affect recoverable sugar, starch, and fiber: Part 1

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Raw sugar quality is dependent on the quality of the incoming cane supply across the processing season which, in turn, is greatly affected by the quantities and types of non-stalk tissues present. This study was undertaken to ascertain seasonal cane supply variations in juice quality parameters tha...

  1. Effect of Cane Length on Drop-Off Detection Performance

    ERIC Educational Resources Information Center

    Kim, Dae Shik; Emerson, Robert Wall

    2012-01-01

    Although individuals who are blind have used a stick or a cane for their independent travel since the early years of human history, designs for modern long canes did not appear until World War II, when the systematic long cane techniques were developed by Hoover (1962). Ergonomic factors, such as the length of the cane, may affect how well a cane…

  2. Big Sugar in southern Africa: rural development and the perverted potential of sugar/ethanol exports.

    PubMed

    Richardson, Ben

    2010-01-01

    This paper asks how investment in large-scale sugar cane production has contributed, and will contribute, to rural development in southern Africa. Taking a case study of the South African company Illovo in Zambia, the argument is made that the potential for greater tax revenue, domestic competition, access to resources and wealth distribution from sugar/ethanol production have all been perverted and with relatively little payoff in wage labour opportunities in return. If the benefits of agro-exports cannot be so easily assumed, then the prospective 'balance sheet' of biofuels needs to be re-examined. In this light, the paper advocates smaller-scale agrarian initiatives. PMID:20873031

  3. 15. RW Meyer Sugar Mill: 18761889. Sorghum pan and boiling ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. RW Meyer Sugar Mill: 1876-1889. Sorghum pan and boiling range flue. Manufactured by John Nott & Co., Honolulu, Hawaii, 1878. View: North side of sorghum pan and boiling range flue, with furnace-end in background. In the sorghum pan heat was applied to the cane juice to clarify it, evaporate its water content, and concentrate the sugar crystals. Hot gasses moved through the flue underneath the entire copper bottom of the sorghum pan from the furnace end (in background) to the smokestack end (in foreground). After the hot cane juice moved through the separate compartments until it reached the final compartment (now missing two sides) where it was drawn out from the copper lip in the corner. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  4. Sugar 101

    MedlinePLUS

    ... your local American Heart area Search by State SELECT YOUR LANGUAGE Español (Spanish) ???? (Traditional Chinese) ???? ( ... calories you need to meet your nutrient needs. Select low-fat and no-sugar-added foods to ...

  5. Ethanol from sugar crops: a critical review

    SciTech Connect

    Lipinsky, E.S.; Allen, B.R.; Bose, A.; Kresovich, S.

    1981-01-01

    Due to the hardships resulting from rising oil prices and periodic production shortfalls, many developing countries, especially those with warm humid climates, have explored ethanol production from sugar crops. This critical review offers information on ethanol production for development planners. Two sugar crop-based ethanol systems, raw sugar facility retrofit and conventional juice extraction, are first examined. The agronomy of sugar crops (cane, beet, sorghum) is then described, as are the steps in crop processing (extraction, fermentation, distillation, stillage disposal). The costs of producing ethanol from a typical sugarcane processing plant and from a state-of-the-art molasses processing facility are presented, and the trade-offs between producing ethanol or raw sugar from sugarcane weighed. Finally, the properties of ethanol in automotive fuels are outlined, along with important storage, handling, and safety considerations. Three major problems are cited in ethanol production from sugar crops: adverse environmental effects (10 gallons of waste to 1 gallon of ethanol); the high cost of conventional milling equipment; and the loss of potential revenue from raw sugar sales. A future possibility of producing ethanol from fibrous residues (bagasse) is noted. Included are a 64-item bibliography (1936-1980) and 31 tables.

  6. Fermentative hydrogen production from agroindustrial lignocellulosic substrates

    PubMed Central

    Reginatto, Valeria; Antônio, Regina Vasconcellos

    2015-01-01

    To achieve economically competitive biological hydrogen production, it is crucial to consider inexpensive materials such as lignocellulosic substrate residues derived from agroindustrial activities. It is possible to use (1) lignocellulosic materials without any type of pretreatment, (2) lignocellulosic materials after a pretreatment step, and (3) lignocellulosic materials hydrolysates originating from a pretreatment step followed by enzymatic hydrolysis. According to the current literature data on fermentative H2 production presented in this review, thermophilic conditions produce H2 in yields approximately 75% higher than those obtained in mesophilic conditions using untreated lignocellulosic substrates. The average H2 production from pretreated material is 3.17 ± 1.79 mmol of H2/g of substrate, which is approximately 50% higher compared with the average yield achieved using untreated materials (2.17 ± 1.84 mmol of H2/g of substrate). Biological pretreatment affords the highest average yield 4.54 ± 1.78 mmol of H2/g of substrate compared with the acid and basic pretreatment - average yields of 2.94 ± 1.85 and 2.41 ± 1.52 mmol of H2/g of substrate, respectively. The average H2 yield from hydrolysates, obtained from a pretreatment step and enzymatic hydrolysis (3.78 ± 1.92 mmol of H2/g), was lower compared with the yield of substrates pretreated by biological methods only, demonstrating that it is important to avoid the formation of inhibitors generated by chemical pretreatments. Based on this review, exploring other microorganisms and optimizing the pretreatment and hydrolysis conditions can make the use of lignocellulosic substrates a sustainable way to produce H2. PMID:26273246

  7. Thermal conductivity of cane fiberboard

    SciTech Connect

    Leader, D.R.

    1995-05-01

    The thermal conductivity of cane fiberboard was measured in two planes; parallel to the surface and perpendicular to the surface of the manufactured sheet. The information was necessary to better understand the thermal response of a loaded shipping container. The tests demonstrated that the thermal conductivity of cane fiberboard in the plane parallel to the surface of the sheet was nearly twice as great as the conductivity of the same material in a plane perpendicular to the sheet. There was no significant difference in the conductivity in different directions within the plane parallel to the surface, and the presence of glue between layers of fiberboard did not significantly change the conductivity of the assembly. The tests revealed that the thermal conductivity measured in a direction perpendicular to the plane of the surface of a stack of cane fiberboard sheets not bonded together, decreases with an increase in the mean temperature. This was determined to be the result of air gaps between the sheets of fiberboard, and not related to the properties of the material itself

  8. Biodiesel production from microalgae: co-location with sugar mills.

    PubMed

    Lohrey, Christian; Kochergin, Vadim

    2012-03-01

    Co-location of algae production facilities with cane sugar mills can be a technically advantageous path towards production of biodiesel. Algal biodiesel production was integrated with cane sugar production in the material and energy balance simulation program Sugars™. A model was developed that allowed comparison of production scenarios involving dewatering the algae to 20% ds (dry solids) or 30% ds prior to thermal drying. The net energy ratio, E(R) (energy produced/energy consumed) of the proposed process was found to be 1.5. A sensitivity analysis showed that this number ranged from 0.9 to 1.7 when the range of values for oil content, CO(2) utilization, oil conversion, and harvest density reported in the literature were evaluated. By utilizing available waste-resources from a 10,000 ton/d cane sugar mill, a 530 ha algae farm can produce 5.8 million L of biodiesel/yr and reduce CO(2) emissions of the mill by 15% without the need for fossil fuels. PMID:22265980

  9. Managing your blood sugar

    MedlinePLUS

    Hyperglycemia - control; Hypoglycemia - control; Diabetes - blood sugar control ... Know how to: Recognize and treat low blood sugar (hypoglycemia) Recognize and treat high blood sugar (hyperglycemia) ...

  10. 21 CFR 890.3075 - Cane.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Cane. 890.3075 Section 890.3075 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3075 Cane. (a) Identification. A...

  11. 21 CFR 890.3075 - Cane.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Cane. 890.3075 Section 890.3075 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3075 Cane. (a) Identification. A...

  12. 21 CFR 890.3075 - Cane.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Cane. 890.3075 Section 890.3075 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3075 Cane. (a) Identification. A...

  13. 21 CFR 890.3075 - Cane.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Cane. 890.3075 Section 890.3075 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3075 Cane. (a) Identification. A...

  14. 21 CFR 890.3075 - Cane.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Cane. 890.3075 Section 890.3075 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3075 Cane. (a) Identification. A...

  15. Sugar Beet

    Technology Transfer Automated Retrieval System (TEKTRAN)

    World sugar production is around 160 Mt yearly with a per capita consumption of about 23 kg. Total utilization is increasing approximately 1.4% annually thanks to the improved standard of living in densely populated countries like China and India. About one-quarter of world production is extracted f...

  16. Effect of Cane Length on Drop-Off Detection Performance

    ERIC Educational Resources Information Center

    Kim, Dae Shik; Emerson, Robert Wall

    2012-01-01

    Although individuals who are blind have used a stick or a cane for their independent travel since the early years of human history, designs for modern long canes did not appear until World War II, when the systematic long cane techniques were developed by Hoover (1962). Ergonomic factors, such as the length of the cane, may affect how well a cane…

  17. 28. RW Sugar Mill: 18761889. Boilingrange Furnace and Clarifier position. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. RW Sugar Mill: 1876-1889. Boiling-range Furnace and Clarifier position. View: In the boiling range all of the clarification, evaporation, and concentration of cane juice took place in open pans over the Continuous flue leading from this furnace. The furnace door through the exterior wall is at the end of the furnace. In the original installation, two copper clarifiers, manufactured by John Nott & Co. occupied this space directly above the furnace. In the clarifiers, lime was added to the cane juice so that impurities would coagulate into a scum on top of the near-boiling juice. The clarifiers have been removed since the closing of the mill. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  18. 29. RW Meyer Sugar Mill: 18761889. Boilingrange furnace and clarifier ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    29. RW Meyer Sugar Mill: 1876-1889. Boiling-range furnace and clarifier position. View: In the boiling range all of the concentration, evaporation, and concentration of cane juice took place in open pans over the continous flue leaving this furnace. The furnace door through the exterior wall is at the end of the furnace. In the original installation two copper clarifiers, manufactured by John Nott & Co. occupied this space directly above the furnace. In the clarifier lime was added to the cane juice so that impurities would coagulate into a scum on top of the near-boiling juice. The clarifiers have been removed since the closing of the mill. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  19. Topochemistry of environmentally friendly pretreatments to enhance enzymatic hydrolysis of sugar cane bagasse to fermentable sugar.

    PubMed

    Mou, Hongyan; Heikkilä, Elina; Fardim, Pedro

    2014-04-23

    In this work, dilute alkaline and alkaline peroxide pretreatments were conducted in comparison with hydrotropic pretreatment to improve the delignification of bagasse prior to enzymatic hydrolysis. The surface chemical composition of bagasse after pretreatments was investigated by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The surface distribution of lignin and extractives on the bagasse fiber was significantly changed by dilute alkaline, alkaline peroxide, and hydrotropic pretreatments. Hydrotropic pretreatment typically showed, other than the decrease of surface coverage by lignin and extractives, dramatic removal of xylan, thereby leading to more cellulose exposed on the fiber surface after pretreatment. Fiber morphology after pretreatments was more favorable for enzyme hydrolysis as well. However, the hydrotropic treatment had clear advantages because the enzymatic hydrolysis yields of glucan and xylan of pretreated bagasse were 83.9 and 14.3%, respectively. PMID:24689355

  20. Use of wastes of the sugar industry as pozzolana in lime-pozzolana binders: Study of the reaction

    SciTech Connect

    Hernandez, J.F.M.; Middendorf, B.; Gehrke, M.; Budelmann, H.

    1998-11-01

    Mineralogical studies of different wastes of the sugar industry, mainly sugar cane bagasse ash and sugar cane straw ash, have shown that such by-products are likely to be pozzolanic. Their use in lime-pozzolana binders could become an interesting alternative for developing countries. This paper presents a study that was aimed at monitoring the reaction between lime and wastes of the sugar industry having pozzolanic properties by evaluating (1) content of calcium hydroxide, dependent on time; (2) development of the pore structure, dependent on time; (3) study on the reaction products at different stages; and (4) mechanical properties of hardened pastes. The presence of calcium hydroxide was confirmed by x-ray diffraction analysis and thermogravimetric analysis of powder from samples of hydrated lime-pozzolana pastes. The reaction products in hydrated pastes were observed in a scanning electron microscope, and the pore structure was assessed using a mercury intrusion porosimeter. The results of the study show that sugar cane bagasse ash does not act like a reactive pozzolana, mainly due to the presence of unburned material and carbon, whereas sugar cane straw ash shows good pozzolanic activity comparable to that of rice husk ash.

  1. [Agroindustrial wastes methanization and bacterial composition in anaerobic digestion].

    PubMed

    González-Sánchez, María E; Pérez-Fabiel, Sergio; Wong-Villarreal, Arnoldo; Bello-Mendoza, Ricardo; Yañez-Ocampo, Gustavo

    2015-01-01

    The tons of organic waste that are annually generated by agro-industry, can be used as raw material for methane production. For this reason, it is important to previously perform biodegradability tests to organic wastes for their full scale methanization. This paper addresses biodegradability, methane production and the behavior of populations of eubacteria and archaeabacteria during anaerobic digestion of banana, mango and papaya agroindustrial wastes. Mango and banana wastes had higher organic matter content than papaya in terms of their volatile solids and total solid rate (94 and 75% respectively). After 63 days of treatment, the highest methane production was observed in banana waste anaerobic digestion: 63.89ml CH4/per gram of chemical oxygen demand of the waste. In the PCR-DGGE molecular analysis, different genomic footprints with oligonucleotides for eubacteria and archeobacteria were found. Biochemical methane potential results proved that banana wastes have the best potential to be used as raw material for methane production. The result of a PCR- DGGE analysis using specific oligonucleotides enabled to identify the behavior of populations of eubacteria and archaeabacteria present during the anaerobic digestion of agroindustrial wastes throughout the process. PMID:26365369

  2. Waste heat recovery systems in the sugar industry: An Indian perspective

    SciTech Connect

    Madnaik, S.D.; Jadhav, M.G.

    1996-04-01

    This article identifies the key role of the sugar industry in the rural development of developing countries. The Indian sugar industry, already second largest among the country`s processing industries, shows even greater potential, according to the Plan Documents (shown in a table). The potential of waste heat in sugar processing plants, which produce white crystal sugar using the double sulphitation clarification process, is estimated at 5757.9 KJ/kg of sugar. Efficient waste heat recovery (WHR) systems could help arrest the trend of increasing production costs. This would help the sugar industry not only in India, but in many other countries as well. The innovative methods suggested and discussed briefly in this article include dehydration of prepared cane, bagasse drying, and juice heating using waste heat. These methods can reduce the cost of energy in sugar production by at least 10% and improve efficiency and productivity.

  3. HoCP 00-950: an early maturing variety for the Louisiana sugar industry

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Agricultural Research Service of the United States Department of Agriculture, the Louisiana Agricultural Experiment Station of the Louisiana State University Agricultural Center, and the American Sugar Cane League of the U.S.A., Inc., working cooperatively to develop improved sugarcane varieties...

  4. The Caribbean Sugar Bowl: A Case Study of "Human-Environment Interaction."

    ERIC Educational Resources Information Center

    Martinson, Tom L.

    1992-01-01

    Presents a middle school lesson on the geographic theme of human-environmental interaction. Explains that the natural environments of the Dominican Republic and the gulf region of Alabama are compared and contrasted in the production of sugar cane. Includes maps, graphs, a historic speech, and suggested texts. (DK)

  5. 75 FR 60715 - Domestic Sugar Program-FY 2010 and FY 2011 Cane Sugar and Beet Sugar Marketing Allotments and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-01

    ..., Farm Service Agency, USDA, 1400 Independence Avenue, SW., Mail Stop 0516, Washington, DC 20250-0516... Hawaii was reassigned to these recipient mills (see below). The allocations of the mills which the... allocation of 6,356 tons was reassigned to Hawaii in FY 2010, as required, and then further reassigned to...

  6. Drop-Off Detection with the Long Cane: Effects of Different Cane Techniques on Performance

    ERIC Educational Resources Information Center

    Kim, Dae Shik; Emerson, Robert Wall; Curtis, Amy

    2009-01-01

    This study compared the drop-off detection performance with the two-point touch and constant contact cane techniques using a repeated-measures design with a convenience sample of 15 cane users with visual impairments. The constant contact technique was superior to the two-point touch technique in the drop-off detection rate and the 50% detection…

  7. The Role of Universities in Supporting Local Agroindustry: The Case of the Piceno District in Italy

    ERIC Educational Resources Information Center

    Tavoletti, Ernesto

    2008-01-01

    This paper analyses the role of universities in supporting local agroindustry using the case of the Piceno agroindustrial district in Italy. Emerging countries' comparative advantages, made stronger by increased international trade and the rediscovery of local traditions and typicality, do not signify that there will be a less knowledge-intensive…

  8. The Role of Universities in Supporting Local Agroindustry: The Case of the Piceno District in Italy

    ERIC Educational Resources Information Center

    Tavoletti, Ernesto

    2008-01-01

    This paper analyses the role of universities in supporting local agroindustry using the case of the Piceno agroindustrial district in Italy. Emerging countries' comparative advantages, made stronger by increased international trade and the rediscovery of local traditions and typicality, do not signify that there will be a less knowledge-intensive…

  9. Spore production in Paecilomyces lilacinus (Thom.) samson strains on agro-industrial residues

    PubMed Central

    Robl, Diogo; Sung, Letizia B.; Novakovich, João Henrique; Marangoni, Paulo R.D.; Zawadneak, Maria Aparecida C.; Dalzoto, Patricia R.; Gabardo, Juarez; Pimentel, Ida Chapaval

    2009-01-01

    Paecilomyces lilacinus has potential for pests control. We aimed to analyze mycelial growth and spore production in P. lilacinus strains in several agro-industrial residues and commercial media. This study suggests alternative nutrient sources for fungi production and that the biotechnological potential of agro-industrial refuses could be employed in byproducts development. PMID:24031361

  10. Butanol production from cane molasses by Clostridium saccharobutylicum DSM 13864: batch and semicontinuous fermentation.

    PubMed

    Ni, Ye; Wang, Yun; Sun, Zhihao

    2012-04-01

    Clostridium acetobutylicum strains used in most Chinese ABE (acetone-butanol-ethanol) plants favorably ferment starchy materials like corn, cassava, etc., rather than sugar materials. This is one major problem of ABE industry in China and significantly limits the exploitation of cheap waste sugar materials. In this work, cane molasses were utilized as substrate in ABE production by Clostridium saccharobutylicum DSM 13864. Under optimum conditions, total solvent of 19.80 g/L (13.40 g/L butanol) was reached after 72 h of fermentation in an Erlenmeyer flask. In a 5-L bioreactor, total solvent of 17.88 g/L was attained after 36 h of fermentation, and the productivity and yield were 0.50 g/L/h and 0.33 g ABE/g sugar consumption, respectively. To further enhance the productivity, a two-stage semicontinuous fermentation process was steadily operated for over 8 days (205 h, 26 cycles) with average productivity (stage II) of 1.05 g/L/h and cell concentration (stage I) of 7.43 OD(660), respectively. The average batch fermentation time (stage I and II) was reduced to 21-25 h with average solvent of 15.27 g/L. This study provides valuable process data for the development of industrial ABE fermentation process using cane molasses as substrate. PMID:22362519

  11. Low blood sugar

    MedlinePLUS

    ... into the cells. This leads to symptoms of diabetes. Low blood sugar occurs due to any of the following: Your ... blood sugar. In people who do not have diabetes, low blood sugar may be caused by: Drinking alcohol Insulinoma , which ...

  12. Sweeteners - sugar substitutes

    MedlinePLUS

    Artificial sweeteners are substances that are used in place of sweeteners with sugar (sucrose) or sugar alcohols . ... foods and drinks without adding extra calories. Using artificial sweeteners in place of sugar can also help ...

  13. Forage and sugar in dairy calves' starter diet and their interaction on performance, weaning age and rumen fermentation.

    PubMed

    Beiranvand, H; Ghorbani, G R; Khorvash, M; Kazemi-Bonchenari, M

    2014-06-01

    The effects of sugar and forage inclusion in calves' starter and their interaction on animal performance and rumen fermentation parameters were investigated. Twenty-eight neonatal Holstein male calves 3 days of age with average body weights of 42 ± 4 kg were allocated to four different treatments. All calves were fed a similar basal diet consisting of milk and concentrate. The experimental treatments were: (i) basal diet with no supplementation (Control, hereafter designated by C), (ii) basal diet plus 5% granular sugar cane (Sugar, designated by S), (iii) basal diet plus 5% forage (Forage, designated by F) and (iv) basal diet plus 5% forage with 5% granular sugar cane (F × S). Supplement ingredients were used on a dry matter (DM) basis. Rumen fluid parameters were measured twice on days 35 and 70 of the study period. The calves were weaned when they could consume 1 kg of starter for three consecutive days. The results show that starter intake was not affected by treatment; however, the lowest ADG was observed with calves in the sugar treatment. Weaning age was affected by treatments, and forage showed to reduce milk consumption period down to its shortest. Forage-sugar interaction was found to have no effects on animal performance. The structural body indices as well as the health status of the calves were similar in different treatments. Rumen pH did not differ among the treatment groups. Among the rumen parameters, total VFA concentration and molar proportions of butyrate and propionate did not exhibit any significant differences among the treatments. However, ruminal acetate concentration decreased in calves that fed sugar cane during the early weeks of the study period. Comparison of forage and sugar included in the starter diets revealed that forage reduced weaning age, while sugar cane had a negative effect on calves' performance. PMID:23796063

  14. Method for processing whole cane and sweet sorghum into fuel alcohol and electric power

    SciTech Connect

    le Grand, F.

    1983-10-01

    A process is described for fermenting whole cane in situ to ethanol, rather than extracting the sugar and fermenting it separately. An energy efficient way of obtaining dehydrated ethanol is the employment of a molecular sieve using bagasse as a desicant. The remaining bagasse is recovered and dried prior to gasification. The producer gas is used to fuel a spark ignition engine which may be geared either to a generating unit or a hydraulic pump. The economics of the process are discussed briefly. (Refs. 3).

  15. Efficient sugar release by acetic acid ethanol-based organosolv pretreatment and enzymatic saccharification.

    PubMed

    Zhang, Hongdan; Wu, Shubin

    2014-12-01

    Acetic acid ethanol-based organosolv pretreatment of sugar cane bagasse was performed to enhance enzymatic hydrolysis. The effect of different parameters (including temperature, reaction time, solvent concentration, and acid catalyst dose) on pretreatment prehydrolyzate and subsequent enzymatic digestibility was determined. During the pretreatment process, 11.83 g of xylose based on 100 g of raw material could be obtained. After the ethanol-based pretreatment, the enzymatic hydrolysis was enhanced and the highest glucose yield of 40.99 g based on 100 g of raw material could be obtained, representing 93.8% of glucose in sugar cane bagasse. The maximum total sugar yields occurred at 190 °C, 45 min, 60:40 ethanol/water, and 5% dosage of acetic acid, reaching 58.36 g (including 17.69 g of xylose and 40.67 g of glucose) based on 100 g of raw material, representing 85.4% of total sugars in raw material. Furthermore, characterization of the pretreated sugar cane bagasse using X-ray diffraction and scanning electron microscopy analyses were also developed. The results suggested that ethanol-based organosolv pretreatment could enhance enzymatic digestibilities because of the delignification and removal of xylan. PMID:25393929

  16. Heat protection by sugars and sugar analogues.

    PubMed

    Henle, K J; Monson, T P; Nagle, W A; Moss, A J

    1985-01-01

    We have examined the relative ability of 16 sugars and sugar analogues to reduce cell killing by hyperthermia of 40 min, 45 degrees C. In general, sugars were added to the culture medium 6 h prior to heating at a concentration of 100 mM (400 mosmol). The results show that D-hexoses, L-hexoses, methylated or thiolated sugars and disaccharides significantly protected cells against thermal damage, increasing survival by factors of 10 to 100. The degree of protection varied for specific sugars and could not be predicted on the basis of sugar conformation or the number of hydroxyl groups. Relative heat protection was partially dependent on the survival assay technique (pre- and post-plating); consistently lower cell survival was measured when cells were subcultured after hyperthermia, both in medium-control and sugar-protected cells. However, the time dependence of heat protection appeared independent of pre- and post-plating. Cell survival after heating was not increased by two sugars: (a) D-idose, and (b) 2-deoxy-D-galactose. The latter sugar, curiously, was also a heat protector but only when cells were trypsinized after hyperthermia. Both of these sugars were relatively more toxic at 37 degrees C under identical treatment conditions. The lack of protection by these two sugars is not understood. Another reported non-sugar heat protector, sodium butyrate, was included as an additional control. Heat protection by butyrate was not observed in CHO cells. The accumulation of intracellular free sugar was measured by gas chromatography after incubating cells for 6 h, 37 degrees C with talose, idose, L-galactose or 1-O-methyl-D-glucose. All of these sugars were found in high concentrations inside of cells. The data are consistent with the hypothesis that polyhydroxy compounds must accumulate intracellularly for cellular heat protection. PMID:3836279

  17. Cost-effective lignocellulolytic enzyme production by Trichoderma reesei on a cane molasses medium

    PubMed Central

    2014-01-01

    Background Cane molasses, an important residue of the sugar industry, have the potential as a cost-effective carbon source that could serve as nutrients for industrial enzyme-producing microorganisms, especially filamentous fungi. However, the enzyme mixtures produced in such a complex medium are poorly characterized. In this study, the secretome of Trichoderma reesei grown on a cane molasses medium (CMM) as well as on a lactose-based conventional medium (LCM) were compared and analyzed by using proteomics. Results In this study we show that both the CMM and LCM can serve as excellent growth media for T. reesei. The enzyme expression patterns in the two media were similar and a considerable number of the identified proteins on two-dimensional gel electrophoresis (2-DE) gels were those involved in biomass degradation. The most abundant cellulolytic enzymes identified in both media were cellobiohydrolases (Cel7A/Cel6A) and endoglucanases (Cel7A/Cel5A) and were found to be more abundant in CMM. We also found that both media can serve as an inducer of xylanolytic enzymes. The main xylanases (XYNI/XYNIV) and xyloglucanase (Cel74A) were found at higher concentrations in the CMM than LCM. Conclusions We analyzed the prevalent proteins secreted by T. reesei in the CMM and LCM. Here, we show that hydrolytic enzymes are cost-effective and can be produced on cane molasses as a carbon source which can be used to digest lignocellulolytic biomass. PMID:24655817

  18. 3. RW Meyer Sugar Mill: 18761889. Sorghum pan and boiling ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. RW Meyer Sugar Mill: 1876-1889. Sorghum pan and boiling range flue. Manufactured by John Nott & Co., Honolulu, Hawaii, 1878. View: South side of sorghum pan and boiling range flue. In the sorghum pan heat was applied to the cane juice to clarify it, evaporate its water content, and concentrate the sugar crystals. Hot gasses moved through the flue underneath the entire copper bottom of the sorghum pan from the furnace (east) end to the smokestack (west) end of the boiling range. The sorghum pan sides are of redwood. The flue is built of fire-brick, masonry, and portland cement. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  19. Quantitation of trans-aconitic acid in different stages of the sugar-manufacturing process.

    PubMed

    Montoya, Guillermo; Londono, July; Cortes, Paola; Izquierdo, Olga

    2014-08-20

    The sugar cane industry has seen how biomass production in sugar mills would be converted to a readily available source of molecules besides sugar. Properly managed, byproducts would be transformed into a sustainable source of renewable and environmentally friendly chemical products. As a principal and more abundant organic acid in sugar cane juice, trans-aconitic acid (TAA) has been studied for use as a plasticizer in the polymer industry. However, up to now no industrial-scale application has been reported. As a reasonable approach to recover TAA from a sugar mill, first, an analytical method to determine its presence in all stages of the sugar-manufacturing process is needed. A new modern method was developed to measure TAA in seven stages in a sugar mill located in Valle del Cauca, Colombia. The stages with higher content of TAA were syrup, with 3363.6 ± 589.3 mg/L, and honey (molasses), with 6110.05 ± 139.5 mg/L. PMID:25098840

  20. Efficient production of l-lactic acid using co-feeding strategy based on cane molasses/glucose carbon sources.

    PubMed

    Xu, Ke; Xu, Ping

    2014-02-01

    L-Lactic acid is an important platform chemical, which ought to be produced under cost control to meet its huge demand. Cane molasses, a waste from sugar manufacturing processes, is hopeful to be utilized as a cheap carbon source for L-lactic acid fermentation. Considering that cane molasses contains nutrients and hazardous substances, efficient production of L-lactic acid was developed by using a co-feeding strategy based on the utilization of cane molasses/glucose carbon sources. Based on the medium optimization with response surface method, 168.3g/L L-lactic acid was obtained by a Bacillus coagulans strain H-1 after 78h fed-batch fermentation, with a productivity of 2.1g/Lh and a yield of 0.88g/g. Since cane molasses is a feasible carbon source, the co-feeding fermentation might be a promising alternative for the economical production of L-lactic acid. PMID:24333698

  1. Bioprocessing of some agro-industrial residues for endoglucanase production by the new subsp.; Streptomyces albogriseolus subsp. cellulolyticus strain NEAE-J

    PubMed Central

    El-Naggar, Noura El-Ahmady; Abdelwahed, Nayera A.M.; Saber, Wesam I.A.; Mohamed, Asem A.

    2014-01-01

    The use of low cost agro-industrial residues for the production of industrial enzymes is one of the ways to reduce significantly production costs. Cellulase producing actinomycetes were isolated from soil and decayed agricultural wastes. Among them, a potential culture, strain NEAE-J, was selected and identified on the basis of morphological, cultural, physiological and chemotaxonomic properties, together with 16S rDNA sequence. It is proposed that strain NEAE-J should be included in the species Streptomyces albogriseolus as a representative of a novel sub-species, Streptomyces albogriseolus subsp. cellulolyticus strain NEAE-J and sequencing product was deposited in the GenBank database under accession number JN229412. This organism was tested for its ability to produce endoglucanase and release reducing sugars from agro-industrial residues as substrates. Sugarcane bagasse was the most suitable substrate for endoglucanase production. Effects of process variables, namely incubation time, temperature, initial pH and nitrogen source on production of endoglucanase by submerged fermentation using Streptomyces albogriseolus subsp. cellulolyticus have been studied. Accordingly optimum conditions have been determined. Incubation temperature of 30 °C after 6 days, pH of 6.5, 1% sugarcane bagasse as carbon source and peptone as nitrogen source were found to be the optimum for endoglucanase production. Optimization of the process parameters resulted in about 2.6 fold increase in the endoglucanase activity. Therefore, Streptomyces albogriseolus subsp. cellulolyticus coud be potential microorganism for the intended application. PMID:25242966

  2. The Truth about Sugar.

    PubMed

    Yeung, C Albert; Goodfellow, Ashley; Flanagan, Louise

    2015-01-01

    Sugars are used by the industry to enhance the attractiveness of foods and drinks. These added sugars, or 'free sugars', are not easily identified in food or drink labels. Certain manufactured foods and drinks with 'safe' names, such as dried fruit and fruit juice, still contain free sugars and can be confusing. Guidance states that daily consumption of free sugars should be less than 10% of total energy intake (no more than 5% in the UK). However, it is found that both tooth decay and obesity are associated with consumption of free sugars in large quantities and at inappropriate times. PMID:26506805

  3. Monitoring Blood Sugar: The Importance of Checking Blood Sugar Levels

    MedlinePLUS

    ... Emergency Cerebral Palsy: Caring for Your Child Monitoring Blood Sugar KidsHealth > For Parents > Monitoring Blood Sugar Print ... Other Tests Record Keeping The Importance of Checking Blood Sugar Levels Besides helping to keep blood sugar ...

  4. Multiple applications of ion chromatography oligosaccharide fingerprint profiles to solve a variety of sugar and sugar-biofuel industry problems.

    PubMed

    Eggleston, Gillian; Borges, Eduardo

    2015-03-25

    Sugar crops contain a broad variety of carbohydrates used for human consumption and the production of biofuels and bioproducts. Ion chromatography with integrated pulsed amperometric detection (IC-IPAD) can be used to simultaneously detect mono-, di-, and oligosaccharides, oligosaccharide isomers, mannitol, and ethanol in complex matrices from sugar crops. By utilizing a strong NaOH/NaOAc gradient method over 45 min, oligosaccharides of at least 2-12 dp can be detected. Fingerprint IC oligosaccharide profiles are extremely selective, sensitive, and reliable and can detect deterioration product metabolites from as low as 100 colony-forming units/mL lactic acid bacteria. The IC fingerprints can also be used to (i) monitor freeze deterioration, (ii) optimize harvesting methods and cut-to-crush times, (iii) differentiate between white refined sugar from sugar cane and from sugar beets, (iv) verify the activities of carbohydrate enzymes, (v) select yeasts for ethanol fermentations, and (vi) isolate and diagnose infections and processing problems in sugar factories. PMID:25708094

  5. Home blood sugar testing

    MedlinePLUS

    Check your blood sugar level as often as instructed by your health care provider. Write down the results. This will tell you how ... everyone with diabetes needs to check their blood sugar every day. Some people need to check it ...

  6. Anomeric Anhydro Sugars

    NASA Astrophysics Data System (ADS)

    McGill, Nathan W.; Williams, Spencer J.

    Anomeric anhydro sugars are sugar derivatives where the anomeric carbon participates in an acetal linkage with two of the hydroxyl groups of the sugar. They are essentially intramolecular glycosides, and their bicyclic nature provides a powerful conformational constraint that greatly influences their reactivity. This chapter reviews the occurrence, properties, formation, and reactions of anomeric anhydro sugars. Particular emphasis is placed on 1,2- and 1,6-anhydropyranoses, including conformational aspects and ring-opening reactions. Epoxide-containing 1,6-anhydro sugars (Černý epoxides) are briefly reviewed, and the formation and some reactions of the 1,6-anhydro sugar enone, levoglucosenone, is covered. An overview is given of the use of 1,2-anhydro sugar as glycosyl donors. Also discussed are the formation and reactions of anomeric anhydro sugars containing nitrogen, sulfur, or selenium.

  7. Hyperactivity and sugar

    MedlinePLUS

    ... likely to be hyperactive if they eat sugar, artificial sweeteners, or certain food colorings. Other experts disagree ... eating sugar (such as sucrose), aspartame (NutraSweet), and artificial flavors and colors lead to hyperactivity and other ...

  8. Carbohydrates, Sugar, and Your Child

    MedlinePLUS

    ... Allergy Emergency Cerebral Palsy: Caring for Your Child Carbohydrates, Sugar, and Your Child KidsHealth > For Parents > Carbohydrates, Sugar, ... a 1-ounce equivalent. previous continue Sizing Up Sugar Foods that are high in added sugar (soda, ...

  9. The Influence of Phosphorus and Potassium Fertilization on the Quality of Sugar of Two Sugarcane Varieties Grown on Three Soil Series of Sudan

    NASA Astrophysics Data System (ADS)

    Elamin, E. A.; El-Tilib, M. A.; Elnasikh, M. H.; Ibrahim, S. H.; Elsheikh, M. A.; Babiker, E. E.

    A filed experiment was conducted at the Farm of Northwest Sennar Sugar Company, Sudan (latitude 13° 33'N and longitude 33° 37'E) to examine the effects of potassium and phosphorous fertilization on the quality of two sugarcane (Saccharum officinarum) varieties (Co 6806 and Co 527) and their first ratoons grown on three soil series (Dinder, Hagu and Nasr) of Sudan. Three levels of both potassium (0, 86 and 172 kg K2O ha-1) and phosphorous (TSP) (0, 64.5 and 129 kg P2O5 ha-1) were used. The quality parameters of both plant cane and ratoons were evaluated in terms of contents of fiber, moisture, sugar content (polarization %), purity of the juice and brix (TSS). The results revealed that potassium and phosphorous fertilizers did not significantly affect the fiber content of the plant cane and the moisture content was significantly affected by potassium fertilization. Phosphorus treatments significantly affected the sugar content (polarization %) and purity of the juice (%). The brix percent of cane decreased by the end of the season as a response to phosphorus treatment, while the ratoon was slightly affected. On the other hand, the effect of potassium application on brix percent was insignificant in both plant cane and ratoon. The effect of variety on brix percent was noted to be significant in both plant cane and ratoon before harvest.

  10. Bagasse-fired steam boiler station for Kenana Sugar in Sudan

    SciTech Connect

    Not Available

    1981-02-01

    The equipment and operation of the bagasse fired steam boiler station of the Kenana Sugar factory in Sudan are described. The station consists of six bagasse-fired, steam boilers with individual capacities of 113 tonnes per hour which provide steam for a 40 MN power station. During the off-season it serves as a regional power station which also operates irrigation facilities to the cane fields. The bagasse handling and feeding system is also described.

  11. Drop-off Detection with the Long Cane: Effects of Different Cane Techniques on Performance

    PubMed Central

    Kim, Dae Shik; Emerson, Robert Wall; Curtis, Amy

    2010-01-01

    This study compared the drop-off detection performance with the two-point touch and constant contact cane techniques using a repeated-measures design with a convenience sample of 15 cane users with visual impairments. The constant contact technique was superior to the two-point touch technique in the drop-off detection rate and the 50% detection threshold. The findings may help an orientation and mobility instructor select an appropriate technique for a particular client or training situation. PMID:21209791

  12. Sugars and flowering in the grapevine (Vitis vinifera L.).

    PubMed

    Lebon, G; Wojnarowiez, G; Holzapfel, B; Fontaine, F; Vaillant-Gaveau, N; Clément, C

    2008-01-01

    Sugars play an important role in grapevine flowering. This complex process from inflorescence initiation to fruit maturity takes two growing seasons. Currently, most of the available data concern the involvement of sugars as energy sources during the formation of reproductive structures from initiation of inflorescences during the summer of the first year, until flower opening during the following spring. Sugars devoted to the development of reproductive structures are supplied either by wood reserves or by photosynthesis in leaves or inflorescences, depending on the stage of development. Female meiosis appears to be a key point in the success of flower formation because (i) flowers are vulnerable at this stage and (ii) it corresponds in the whole plant to the transition between reserve mobilization from perennial organs (roots, trunk, and canes) towards efficient leaf photosynthesis. The perturbation of reserve replenishment during the previous year provokes perturbation in the development of inflorescences, whereas altering the photosynthetic sources affects the formation of flowers during the same year. In particular, a lack of sugar availability in flowers at female meiosis caused by various environmental or physiological fluctuations may lead to drastic flower abortion. Apart from energy, sugars also play roles as regulators of gene expression and as signal molecules that may be involved in stress responses. In the future, these two topics should be further investigated in the grapevine considering the sensitivity of flowers to environmental stresses at meiosis. PMID:18508810

  13. Haiti: energy efficiency in the sugar and manufacturing industries

    SciTech Connect

    Streicher, A.

    1985-03-28

    A review of energy use in Haiti, aimed at identifying possible projects to complement current A.I.D. support for institution building and energy planning within the Ministry of Mines and Energy Resources (MMRE), is presented. Key findings are that: (1) the sugar and manufacturing industries rely heavily on biomass fuels - wood, charcoal, and bagasse (sugar cane residue); and (2) demand for commercial energy and for electricity is growing rapidly despite supply constraints. The report calls for A.I.D. to: initiate a program to reduce biomass consumption (which is causing severe soil erosion and deforestation), especially in the small distilleries called guildives; collaborate with MMRE and the World Bank to develop a detailed workplan to promote energy efficiency in the guildives, focusing on technology development; help MMRE and the private sector to project Haiti's industrial energy and electricity needs through the year 2000; and sponsor a program of energy audits and efficiency improvements in the manufacturing sector.

  14. 20. RW Meyer Sugar Mill: 18761889. Boiling House Interior, 1878. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. RW Meyer Sugar Mill: 1876-1889. Boiling House Interior, 1878. View: Remains of south wall. The molasses storage pits are below the floor in the foreground. The remaining piece of floor indicates the form of the entire floor. The sorghum pan and boiling range flue slope from left to right (east to west) and permitted batches of cane juice to flow through the boiling pan by gravity. The beams, joists, truss work are built of northwest pine. The sides and floor boards are built of redwood. The boiling range flue is built of fire-brick, masonry, and portland cement. The corrugated roof appears to be a later addition, not contemporary with mill operation. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  15. Electricity generation potential of Thai sugar mills

    SciTech Connect

    Therdyothin, A.; Bhattacharaya, S.C.; Chirarattananon, S. )

    1992-10-01

    At present, the total installed electricity generating capacity of Thailand is 7500 MW. Because this level of investment will take an unacceptable large part of total foreign borrowing, the government plans to encourage participation of the private sector in electricity generation. Among the various technology options for power production, cogeneration appears to be the most promising technology due to its very high effectiveness of fuel utilization. Therefore, in the first phase of private power generation, the Thai government is encouraging cogeneration systems. This paper discusses sugar mills, where expertise and equipment for electricity generation already exist, appear to be in a particularly advantageous position to participate in the private power generation program. At present, there are 46 sugar mills in Thailand with a total capacity of 338,000 tons of cane per day. The fiber part delivered from the milling of sugarcane, bagasse, is normally used to produce steam for the process heat and electricity generation. The investment and operating costs for each of these alternatives have been evaluated. The internal rate of return is used to indicate the benefit of each alternative.

  16. Plantain fibre bundles isolated from Colombian agro-industrial residues.

    PubMed

    Gañán, Piedad; Zuluaga, Robin; Restrepo, Adriana; Labidi, Jalel; Mondragon, Iñaki

    2008-02-01

    Comestible fruit production from Musaceas plants is an important economical activity in developing countries like Colombia. However, it generates a large amount of agro-industrial residues. Some of them are a potential resource of natural fibres, which can be used as reinforcement for composite materials. In this work, a series of commercial plantain (Musa AAB, cv "Dominico Harton") fibre bundles extracted from pseudostem, leaf sheath and rachis agricultural wastes were analyzed. Mechanical decortication and biological retting processes were used during fiber extraction. No significant differences in composition of vascular bundles were observed for both extraction processes. Gross morphological characteristics and mechanical behavior have been evaluated. Conducting tissues with spiral-like arrangement are observed attached to fibre bundles. This fact suggests a big amount of these tissues in commercial plantain plants. Both used extraction methods are not enough to remove them. Pseudostem fibre bundles have higher specific strength and modulus and lower strain at break than leaf sheath and rachis fibre bundles, having values comparable to other lignocellulosic fibres bundles. PMID:17350832

  17. Sharing the Arts of the Blue Ridge Mountains. Caning.

    ERIC Educational Resources Information Center

    Holman, Martha; Gailey, Lamar

    This module on chair caning is one of eight modules designed to provide instruction on authentic Blue Ridge Mountain crafts to adult basic education students at a low cost. Contents include notes on the history of caning; process used, including equipment and materials, as well as method described narratively and graphically; and the followup,…

  18. Evaluation of new energy cane varieties for Louisiana

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Renewed interest in U.S bioenergy markets may offer an alternative source of income for Louisiana sugarcane growers. High-fiber sugarcane or energy cane varieties are currently being developed. As with traditional sugarcane varieties, energy-cane varieties need to be evaluated across the sugarca...

  19. Rotating cross arm trellis and cane training for brambles

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We evaluated the combination of primocane training and cane positioning techniques using a rotatable cross-arm (RCA) trellis system and covering plants in winter to protect buds and canes from freezing temperatures in 'Apache', 'Boysenberry', 'Siskiyou', and 'Triple Crown' blackberry. After tying p...

  20. Can high quality cane be delivered to the mill economically

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Cane quality is becoming increasingly important to the Louisiana sugarcane industry, with some processors offering premiums for high quality cane. Using a Cameco® 3500, we tested ground speeds of 2.5, 3.0, and 3.5 mph and fan speeds of 650, 850, and 1050 rpm. Ground speed had no effect on can...

  1. Transport of sugars.

    PubMed

    Chen, Li-Qing; Cheung, Lily S; Feng, Liang; Tanner, Widmar; Frommer, Wolf B

    2015-01-01

    Soluble sugars serve five main purposes in multicellular organisms: as sources of carbon skeletons, osmolytes, signals, and transient energy storage and as transport molecules. Most sugars are derived from photosynthetic organisms, particularly plants. In multicellular organisms, some cells specialize in providing sugars to other cells (e.g., intestinal and liver cells in animals, photosynthetic cells in plants), whereas others depend completely on an external supply (e.g., brain cells, roots and seeds). This cellular exchange of sugars requires transport proteins to mediate uptake or release from cells or subcellular compartments. Thus, not surprisingly, sugar transport is critical for plants, animals, and humans. At present, three classes of eukaryotic sugar transporters have been characterized, namely the glucose transporters (GLUTs), sodium-glucose symporters (SGLTs), and SWEETs. This review presents the history and state of the art of sugar transporter research, covering genetics, biochemistry, and physiology-from their identification and characterization to their structure, function, and physiology. In humans, understanding sugar transport has therapeutic importance (e.g., addressing diabetes or limiting access of cancer cells to sugars), and in plants, these transporters are critical for crop yield and pathogen susceptibility. PMID:25747398

  2. Older Homebound Women: Negotiating Reliance on a Cane or Walker

    PubMed Central

    Porter, Eileen J.; Benson, Jacquelyn J.; Matsuda, Sandy

    2012-01-01

    Canes and walkers are commonly characterized as assistive devices and as devices that serve the same purpose, as walking aides. These general views were reappraised and tempered in this descriptive phenomenological study with 40 older women (aged 85-98) who were unable to leave their homes without help. The purpose was to describe the phenomena of negotiating reliance on canes and walkers as walking devices and the lifeworld context underlying each phenomenon. Relative to lifeworld, there were differences between coming to terms with using a cane and coming to terms with using a walker. Data revealed similarities and distinctions between the basic intentions of relying on canes and on walkers and the associated purposes served by canes and walkers. Participants did not view either device as consistently assistive. Findings evoke opportunities for dialogue among older persons, scholars, practitioners, and designers of these devices about coming to terms with such devices and relying on them. PMID:21041520

  3. Reproduction and mortality in a colony of captive greater cane rats, Thryonomys swinderianus, Temminck.

    PubMed

    Adu, E K; Aning, K G; Wallace, P A; Ocloo, T O

    2000-02-01

    The reproductive performance and mortalities in a colony of captive greater cane rats, Thryonomys swinderianus, were monitored from 1992 to 1998 at the Grasscutter Domestication Centre, Achimota, Ghana. The animals were kept in cages and exposed to constant lighting from a 100 W electric light bulb during the night. The diet consisted mainly of freshly cut Panicum maximum (guinea grass) fed ad libitum, with occasional supplements of cassava and cane sugar. The results indicate that the mean litter size and litter weight were 2.9 +/- 0.51 and 439.4 +/- 81.23 g, respectively. These figures are low compared to those reported elsewhere. However, the mean birth weight was 151.2 +/- 11.08 g, higher by 12% than previously reported values. It is considered that poor nutrition, excessive exposure to light and stress were responsible for the relatively poor reproductive performance reported in these animals. The main causes of death were traumatic injuries (32%) and pulmonary congestion (16%). PMID:10717939

  4. Hawaii's Sugar Islands.

    ERIC Educational Resources Information Center

    Hawaiian Sugar Planters' Association, Aiea, HI.

    A warm and sunny subtropical climate helps make Hawaii an important sugar producer. History records that sugarcane was already present when Captain James Cook discovered the islands in 1778, and that the first successful sugarcane plantation was started in 1835 by Ladd and Company at Koloa. The first recorded export of Hawaiian sugar was in 1837,…

  5. Effect of Extraction Conditions on the Saccharide (Neutral and Acidic) Composition of the Crude Pectic Extract from Various Agro-Industrial Residues.

    PubMed

    Babbar, Neha; Roy, Sandra Van; Wijnants, Marc; Dejonghe, Winnie; Caligiani, Augusta; Sforza, Stefano; Elst, Kathy

    2016-01-13

    The influence of different extraction methodologies was assessed on the composition of both neutral (arabinose, rhamnose, galactose) and acidic (galacturonic acid) pectic polysaccharides obtained from four agro-industrial residues, namely, berry pomace (BP), onion hulls (OH), pressed pumpkin (PP), and sugar beet pulp (SBP). For acidic pectic polysaccharides, the extraction efficiency was obtained as BP (nitric acid-assisted extraction, 2 h, 62.9%), PP (enzymatic-assisted extraction, 12 h, 75.0%), SBP (enzymatic-assisted extraction, 48 h, 89.8%; and nitric acid-assisted extraction, 4 h, 76.5%), and OH (sodium hexametaphosphate-assisted extraction, 0.5 h, 100%; and ammonium oxalate-assisted extraction, 0.5 h, 100%). For neutral pectic polysaccharides, the following results were achieved: BP (enzymatic-assisted extraction, 24 h, 85.9%), PP (nitric acid-assisted extraction, 6 h, 82.2%), and SBP (enzymatic assisted extraction, 48 h, 97.5%; and nitric acid-assisted extraction, 4 h, 83.2%). On the basis of the high recovery of pectic sugars, SBP and OH are interesting candidates for the further purification of pectin and production of pectin-derived products. PMID:26652767

  6. Economical production of poly(ε-l-lysine) and poly(l-diaminopropionic acid) using cane molasses and hydrolysate of streptomyces cells by Streptomyces albulus PD-1.

    PubMed

    Xia, Jun; Xu, Zhaoxian; Xu, Hong; Liang, Jinfeng; Li, Sha; Feng, Xiaohai

    2014-07-01

    Poly(ε-L-lysine) (ε-PL) and poly(L-diaminopropionic acid) (PDAP) co-production by Streptomyces albulus PD-1 from cane molasses and hydrolysate of strepyomyces cells (HSC) was investigated for the first time in this study. The optimal initial total sugar concentration of the cane molasses pretreated with sulfuric acid was determined to be 20 g L(-1), and HSC could substitute for yeast extract for ε-PL and PDAP co-production. When fed-batch fermentation was performed in 1t fermentor with pretreated cane molasses and HSC, 20.6 ± 0.5 g L(-1) of ε-PL and 5.2 ± 0.6 g L(-1) of PDAP were obtained. The amount of strepyomyces cells obtained in one fed-batch fermentation is sufficient to prepare the HSC to satisfy the demand of subsequent fermentations, thus the self-cycling of organic nitrogen source becomes available. These results suggest that the low-cost cane molasses and HSC can be used for the economical production of ε-PL and PDAP by S. albulus PD-1. PMID:24861999

  7. USDA-ARS Efforts in Expanding the Region for Growing Sugar Cane and Complimentary Sugar Crops for Bioenergy

    Technology Transfer Automated Retrieval System (TEKTRAN)

    There is an urgent need to develop second generation feedstocks to supply the additional 16 billion gallons of non-corn biofuels required in 2022 under the Renewable Fuel Standard passed in 2005. As part of the final regulations for the implementation of these standards, EPA has designated sugarcan...

  8. 75 FR 50796 - Fiscal Year 2011 Tariff-Rate Quota Allocations for Raw Cane Sugar, Refined and Specialty Sugar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-17

    ... United States Trade Representative under Presidential Proclamation 6763 (60 FR 1007). On July 30, 2010... MTRV for which the sucrose content, by weight in the dry state, must have a polarimeter reading of...

  9. Frequently Asked Questions about Sugar

    MedlinePLUS

    ... What is the difference between simple and complex carbohydrates? All carbohydrates are made up of units of sugar ("saccharide"). Carbohydrates containing only one unit of sugar (called "monosaccharides") ...

  10. Sugars in Antarctic aerosol

    NASA Astrophysics Data System (ADS)

    Barbaro, Elena; Kirchgeorg, Torben; Zangrando, Roberta; Vecchiato, Marco; Piazza, Rossano; Barbante, Carlo; Gambaro, Andrea

    2015-10-01

    The processes and transformations occurring in the Antarctic aerosol during atmospheric transport were described using selected sugars as source tracers. Monosaccharides (arabinose, fructose, galactose, glucose, mannose, ribose, xylose), disaccharides (sucrose, lactose, maltose, lactulose), alcohol-sugars (erythritol, mannitol, ribitol, sorbitol, xylitol, maltitol, galactitol) and anhydrosugars (levoglucosan, mannosan and galactosan) were measured in the Antarctic aerosol collected during four different sampling campaigns. For quantification, a sensitive high-pressure anion exchange chromatography was coupled with a single quadrupole mass spectrometer. The method was validated, showing good accuracy and low method quantification limits. This study describes the first determination of sugars in the Antarctic aerosol. The total mean concentration of sugars in the aerosol collected at the "Mario Zucchelli" coastal station was 140 pg m-3; as for the aerosol collected over the Antarctic plateau during two consecutive sampling campaigns, the concentration amounted to 440 and 438 pg m-3. The study of particle-size distribution allowed us to identify the natural emission from spores or from sea-spray as the main sources of sugars in the coastal area. The enrichment of sugars in the fine fraction of the aerosol collected on the Antarctic plateau is due to the degradation of particles during long-range atmospheric transport. The composition of sugars in the coarse fraction was also investigated in the aerosol collected during the oceanographic cruise.

  11. Potential production of energy cane for fuel in the Caribbean

    SciTech Connect

    Samuels, G.

    1984-08-01

    Sugarcane grown as energy cane presents a new potential to the Caribbean countries to provide their own energy needs and to reduce or eliminate fuel oil imports. The use of proper agronomic techniques can convert conventional sugarcane growing to a crop capable of giving energy feedstocks in the form of fiber for boiler fuel for electricity and fermentable solids for alcohol for motor fuel. Sugarcane can still be obtained from the energy cane for domestic consumption and export if desired. The aerable land now devoted to sugarcane can utilized for energy-cane production without causing any serious imbalance in food crop production.

  12. Sugar substitutes during pregnancy

    PubMed Central

    Pope, Eliza; Koren, Gideon; Bozzo, Pina

    2014-01-01

    Abstract Question I have a pregnant patient who regularly consumes sugar substitutes and she asked me if continuing their use would affect her pregnancy or child. What should I tell her, and are there certain options that are better for use during pregnancy? Answer Although more research is required to fully determine the effects of in utero exposure to sugar substitutes, the available data do not suggest adverse effects in pregnancy. However, it is recommended that sugar substitutes be consumed in moderate amounts, adhering to the acceptable daily intake standards set by regulatory agencies. PMID:25392440

  13. Total sugars in atmospheric aerosols: An alternative tracer for biomass burning

    NASA Astrophysics Data System (ADS)

    Scaramboni, C.; Urban, R. C.; Lima-Souza, M.; Nogueira, R. F. P.; Cardoso, A. A.; Allen, A. G.; Campos, M. L. A. M.

    2015-01-01

    Ambient aerosols were collected in an agro-industrial region of São Paulo State (Brazil) between May 2010 and February 2012 (n = 87). The atmosphere of the study region is highly affected by the emissions of gases and particles from sugar and fuel ethanol production, because part of the area planted with sugarcane is still burned before manual harvesting. This work proposes the quantification of total sugars as an alternative chemical tracer of biomass burning, instead of levoglucosan. The quantification of total sugars requires a small area of a filter sample and a simple spectrophotometer, in contrast to the determination of levoglucosan, which is much more complex and time-consuming. Total sugars concentrations in the aerosol ranged from 0.28 to 12.5 μg m-3, and (similarly to levoglucosan) the emissions were significantly higher at night and during the sugarcane harvest period, when most agricultural fires occur. The linear correlation between levoglucosan and total sugars (r = 0.612) was stronger than between levoglucosan and potassium (r = 0.379), which has previously been used as a biomass burning tracer. In the study region, potassium is used in fertilizers, and this, together with substantial soil dust resuspension, makes potassium unsuitable for use as a tracer. On average, ca. 40% of the total sugars was found in particles smaller than 0.49 μm. By including data from previous work, it was possible to identify from 35 to 42% of the total sugars, with biomass burning making the largest contribution. The high solubility in water of these sugars means that determination of their concentrations could also provide important information concerning the hydrophilic properties of atmospheric aerosols.

  14. 4. RW Meyer Sugar Mill: 18761889. Furnace doer for sugar ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. RW Meyer Sugar Mill: 1876-1889. Furnace doer for sugar boiling range. Manufactured by Honolulu Iron Works, Honolulu, 1879. Cost: $15.30. View: the furnace for the sugar boiling range was stoked from outside of the east wall of the boiling house. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  15. Sugar Substitutes: Aspartame

    MedlinePLUS

    ... sugar substitute. It is a combination of 2 amino acids: aspartic acid and phenylalanine. It is about 200 ... to metabolize phenylalanine, which is one of the amino acids in aspartame. If you are concerned that consuming ...

  16. Method for producing tip-layered, long-cane blackberry plants using the rotating cross-arm trellis and cane training system

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The rotating cross-arm trellis and a unique cane training technique was used to produce 5- to 6-ft-long tall-cane plants of semi-erect (cv. Triple Crown) and trailing (cv. Siskiyou) blackberries. The primocanes were bent to grow horizontally at 18 in height and the lateral canes that developed on th...

  17. 5. RW Meyer Sugar Mill: 18761889. Two sugar coolers ca. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. RW Meyer Sugar Mill: 1876-1889. Two sugar coolers ca. 1880. View: After the concentrated syrup flowed out of the sorghum pan, it cooled and crystallized in these iron sugar coolers. After the sugar syrup was granulated and cooled it was dug out of the coolers and fed into the centrifugals. The Meyer Mill purchased twelve coolers between 1878 and 1881 costing between $35 and $45 each. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  18. 10. Side view of cane mill looking NW with steam ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Side view of cane mill looking NW with steam engine in background. - Hacienda Azucarera La Esperanza, Steam Engine & Mill, 2.65 Mi. N of PR Rt. 2 Bridge over Manati River, Manati, Manati Municipio, PR

  19. THE TASTE OF SUGARS

    PubMed Central

    McCaughey, Stuart A.

    2008-01-01

    Sugars evoke a distinctive perceptual quality (“sweetness” in humans) and are generally highly preferred. The neural basis for these phenomena is reviewed for rodents, in which detailed electrophysiological measurements have been made. A receptor has been identified that binds sweeteners and activates G-protein-mediated signaling in taste receptor cells, which leads to changes in neural firing rates in the brain, where perceptions of taste quality, intensity, and palatability are generated. Most cells in gustatory nuclei are broadly-tuned, so quality perception presumably arises from patterns of activity across neural populations. However, some manipulations affect only the most sugar-oriented cells, making it useful to consider them as a distinct neural subtype. Quality perception may also arise partly due to temporal patterns of activity to sugars, especially within sugar-oriented cells that give large but delayed responses. Non-specific gustatory neurons that are excited by both sugars and unpalatable stimuli project to ventral forebrain areas, where neural responses provide a closer match with behavioral preferences. This transition likely involves opposing excitatory and inhibitory influences by different subgroups of gustatory cells. Sweeteners are generally preferred over water, but the strength of this preference can vary across time or between individuals, and higher preferences for sugars are often associated with larger taste-evoked responses. PMID:18499254

  20. Impact of invasive cane toads on Australian birds.

    PubMed

    Beckmann, Christa; Shine, Richard

    2009-12-01

    The cane toad (Bufo marinus), a large, toxic, American anuran, was introduced to Australia in 1935. Populations of many of Australia's reptiles (snakes, varanid lizards, crocodiles) and carnivorous mammals (dasyurid marsupials) have declined because these predators are killed by the toad's powerful toxins. In contrast to these well-studied species, little is known about the cane toads impacts on Australian birds. We reviewed published and unpublished data on behavioral interactions between Australian avian predators and cane toads and collated distributional and dietary information to identify avian taxa potentially at risk from cane toad invasion. Cane toads are sympatric with 172 frog-eating bird species in Australia, and an additional 8 bird species overlap with the predicted future range of the toad. Although many bird species thus are potentially at risk, behavioral observations suggest the risk level is generally low. Despite occasional reports of Australian birds being killed when they ingest cane toads, most birds either ignore toads or survive the predation event. The apparently higher tolerance of Australian birds to toad toxins, compared with Australian reptiles and marsupials, may reflect genetic exchange between Australian birds and Asian populations that encounter other bufonid species regularly and hence have evolved the capacity to recognize or tolerate this toxic prey. PMID:19508674

  1. FTIR characterization of Mexican honey and its adulteration with sugar syrups by using chemometric methods

    NASA Astrophysics Data System (ADS)

    Rios-Corripio, M. A.; Rios-Leal, E.; Rojas-López, M.; Delgado-Macuil, R.

    2011-01-01

    A chemometric analysis of adulteration of Mexican honey by sugar syrups such as corn syrup and cane sugar syrup was realized. Fourier transform infrared spectroscopy (FTIR) was used to measure the absorption of a group of bee honey samples from central region of Mexico. Principal component analysis (PCA) was used to process FTIR spectra to determine the adulteration of bee honey. In addition to that, the content of individual sugars from honey samples: glucose, fructose, sucrose and monosaccharides was determined by using PLS-FTIR analysis validated by HPLC measurements. This analytical methodology which is based in infrared spectroscopy and chemometry can be an alternative technique to characterize and also to determine the purity and authenticity of nutritional products as bee honey and other natural products.

  2. Enhancement of enzymatic hydrolysis of sugar cane bagasse by steam explosion pretreatment

    SciTech Connect

    Kling, S.H.; Neto, C.C.; Ferrara, M.A.; Torres, J.C.R.; Magalhaes, D.B.; Ryu, D.D.Y.

    1987-01-01

    In this study, the possibility of applying a steam explosion pretreatment process to sugarcane bagasse was investigated, and the effectiveness of the pretreatment in terms of hemicellulose solubilization and enhancement of enzymatic hydrolysis was determined. The steam requirement for the pretreatment was also investigated at the pilot-plant scale, and these results are presented.

  3. DNA barcode information for the sugar cane moth borer Diatraea saccharalis.

    PubMed

    Bravo, J P; Silva, J L C; Munhoz, R E F; Fernandez, M A

    2008-01-01

    We reviewed the use and relevance of barcodes for insect studies and investigated the barcode sequence of Diatraea saccharalis. This sequence has a high level of homology (99%) with the barcode sequence of the Crambidae (Lepidoptera). The sequence data can be used to construct relationships between species, allowing a multidisciplinary approach for taxonomy, which includes morphological, molecular and distribution data, all of which are essential for the understanding of biodiversity. The D. saccharalis barcode is a previously undescribed sequence that could be used to analyze Lepidoptera biology. PMID:18767242

  4. Identification and structural characterization of novel cyclotide with activity against an insect pest of sugar cane.

    PubMed

    Pinto, Michelle F S; Fensterseifer, Isabel C M; Migliolo, Ludovico; Sousa, Daniel A; de Capdville, Guy; Arboleda-Valencia, Jorge W; Colgrave, Michelle L; Craik, David J; Magalhães, Beatriz S; Dias, Simoni C; Franco, Octávio L

    2012-01-01

    Cyclotides are a family of plant-derived cyclic peptides comprising six conserved cysteine residues connected by three intermolecular disulfide bonds that form a knotted structure known as a cyclic cystine knot (CCK). This structural motif is responsible for the pronounced stability of cyclotides against chemical, thermal, or proteolytic degradation and has sparked growing interest in this family of peptides. Here, we isolated and characterized a novel cyclotide from Palicourea rigida (Rubiaceae), which was named parigidin-br1. The sequence indicated that this peptide is a member of the bracelet subfamily of cyclotides. Parigidin-br1 showed potent insecticidal activity against neonate larvae of Lepidoptera (Diatraea saccharalis), causing 60% mortality at a concentration of 1 ?m but had no detectable antibacterial effects. A decrease in the in vitro viability of the insect cell line from Spodoptera frugiperda (SF-9) was observed in the presence of parigidin-br1, consistent with in vivo insecticidal activity. Transmission electron microscopy and fluorescence microscopy of SF-9 cells after incubation with parigidin-br1 or parigidin-br1-fluorescein isothiocyanate, respectively, revealed extensive cell lysis and swelling of cells, consistent with an insecticidal mechanism involving membrane disruption. This hypothesis was supported by in silico analyses, which suggested that parigidin-br1 is able to complex with cell lipids. Overall, the results suggest promise for the development of parigidin-br1 as a novel biopesticide. PMID:22074926

  5. Effects of Glyphosate Ripener Timing and Rate on Cane and Sugar Yields

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Louisiana sugarcane industry is dependent on the use of glyphosate ripener applications to increase sucrose levels. Initially these applications began in late-August and were limited to the second-ratoon crop harvested at the start of the growing season. Currently, applications have been exten...

  6. Influence of the alkaline delignification on the simultaneous saccharification and fermentation (SSF) of sugar cane bagasse.

    PubMed

    Soares, Mariana Lucena; Gouveia, Ester Ribeiro

    2013-11-01

    Ethanol production from steam explosion alkaline delignified bagasse was investigated by saccharification and simultaneous fermentation. Non delignified bagasse (ND) contained 25% lignin, and after alkaline delignification, materials with 6% (D1 - NaOH 1% w/v) and 12% (D05 - NaOH 0.5% w/v) lignin, respectively, were obtained. Ethanol production increased 450% and 733% in relation to ND, when D05 and D1 material, respectively, were used. Higher productivity and EtOH/bagasse were observed for D1. However, higher enzymatic convertibility of cellulose was obtained with 0.5% w/v NaOH. Alkaline delignification increased the ethanol production despite decreased cellulose. PMID:24025853

  7. [Influence of substrate concentration on PHA production using fermented sugar cane as substrate].

    PubMed

    Chen, Zhi-Qiang; Deng, Yi; Huang, Long; Wen, Qin-Xue; Guo, Zi-Rui

    2013-06-01

    PHA was a kind of biodegradable polymer produced by mixed microorganisms. In recent years, 3-stage PHA synthesis process (including substrate hydrolysis, culture selection, and PHA synthesis) was commonly used for PHA production. In this kind of process, culture selection is the key stage, which directly affects the PHA production efficiency. In order to deal with sludge bulking occurred in the culture selection system, this paper analyzes the influence of substrate concentration on culture selection efficiency as well as operation stability. Under different influent substrate concentrations of 560 mg x L(-1), 1 120 mg x L(-1) and 1 680 mg x L(-1), we confirmed that influent substrate concentration (COD) of 1 120 mg x L(-1) is the most suitable parameter for the bacteria enriching process after a long period of time under short SRT. After 94 days of cultivation, we achieved 50% of PHA content, 0.7145 COD/COD of PHA conversion rate and 0.191 2 mg x (mg x h)(-1) of specific PHA storage rate at the end of batch tests with nutrient starvation. The study also confirmed that glycogen level in cells has a close relationship with its PHA synthesis ability, which shows its potential to predict the enrichment efficiency. PMID:23947047

  8. High productivity and good nutritive values of cellulolytic bacteria grown on sugar cane bagasse. [Cellulomonas sp

    SciTech Connect

    Enriquez, A.; Rodriguez, H.

    1983-03-01

    The fermentation of cellulosic wastes by cellulolytic bacteria shows promise as a process for obtaining new low-cost protein sources; at the same time, it solves a problem of waste disposal. At present, many problems remain to be solved before making this process economically profitable. The low productivity due to poor cell density attained, and low nutritive value of the biomass produced stand out as two of them. Humphrey et al. have pointed out that the critical question in the microbial degradation of cellulose is how to optimize the cell yield in order to achieve nearly total cellulose degradation. Belamy calculated that the rate of cellulose utilization should be at least 1-5 g/l/h for the process to be profitable. The work described here deals with how increases of cell concentration and productivity change the media concentration of a fermentation process using Cellulomonas sp., and the determination of the nutritive value of the product. (Refs. 12).

  9. A comparative analysis of potential impact area of common sugar cane burning methods

    NASA Astrophysics Data System (ADS)

    Hiscox, A. L.; Flecher, S.; Wang, J. J.; Viator, H. P.

    2015-04-01

    The negative effects of agricultural burning are well-known, although the actual impact area of different activities has not previously been quantified. An elastic backscatter lidar system was used to examine the impact-area size and dispersion of smoke generated from different types of sugarcane burning activities; pre-harvest (standing) burning and post-harvest (ground) burning. Experiments were conducted in the sugarcane harvest season of 2010 and 2011 at two locations in Louisiana, USA. Current dispersion theory would suggest that the primary difference between burn types would be primarily in the initial plume rise, but that the overall plume shape would remain the same. However, remotely sensed lidar data with the capability to measure plume dispersion and the short time dynamics of plume location showed pre-harvest (standing) burning produced a larger plume with greater rise and more spread within the 300 m of the plume, but a decrease in dispersion, but not concentration further downwind. Post-harvest (ground) burning produced a more traditional plume shape, but still exceeded impact area predictions near the source. Moreover, large changes in plume size can occur with small increases in wind speed. These are the first instrumented measurements of the meteorological effects of the different types of sugarcane burning. These results indicate that ground burning is preferable, but should be avoided in lower wind speed conditions.

  10. Cyanate as an Active Precursor of Ethyl Carbamate Formation in Sugar Cane Spirit.

    PubMed

    Galinaro, Carlos A; Ohe, Thiago H K; da Silva, Augusto C H; da Silva, Sebastião C; Franco, Douglas W

    2015-08-26

    The thermodynamic and kinetic aspects of ethyl carbamate (EC) formation through the reaction between cyanate and ethanol were investigated. The rate constant values for cyanate ion decay and EC formation are (8.0 ± 0.4) × 10(-5) and (8.9 ± 0.4) × 10(-5) s(-1), respectively, at 25 °C in 48% aqueous ethanolic solution at pH 4.5. Under the investigated experimental conditions, the rate constants are independent of the ethanol and cyanate concentrations but increase as the temperature increases (ΔH1(⧧) = 19.4 ± 1 kcal/mol, ΔS1(⧧) = −12.1 ± 1 cal/K, and ΔG1(⧧) = 23.0 ± 1 kcal/mol) and decrease as the solution pH increases. According to molecular modeling (DFT) that was performed to analyze the reaction mechanism, the isocyanic acid (HNCO) is the active EC precursor. The calculated ΔG1(⧧), ΔH1(⧧), and ΔS1(⧧) values are in very good agreement with the experimental ones. PMID:26248556

  11. Banded applications are highly effective in minimising herbicide migration from furrow-irrigated sugar cane.

    PubMed

    Oliver, Danielle P; Anderson, Jenny S; Davis, Aaron; Lewis, Stephen; Brodie, Jon; Kookana, Rai

    2014-01-01

    Runoff from farm fields is a common source of herbicide residues in surface waters in many agricultural industries around the world. In Queensland, Australia, the runoff of PSII inhibitor herbicides (in particular diuron and atrazine) is a major concern due to their potential impact on the Great Barrier Reef. This study compared the conventional practice of broadcast application of herbicides in sugarcane production across the whole field with the banded application of particular herbicides onto raised beds only using a shielded sprayer. This study found that the application of two moderately soluble herbicides, diuron and atrazine, to only the raised beds decreased the average total load of both herbicides moving off-site by >90% compared with the conventional treatment. This was despite the area being covered with the herbicides by the banded application being only 60% less than with the conventional treatment. The average total amount of atrazine in drainage water was 7.5% of the active ingredient applied in the conventional treatment compared with 1.8% of the active ingredient applied in the banded application treatment. Similarly, the average total amount of diuron in drainage water was 4.6% of that applied in the conventional treatment compared with 0.9% of that applied in the banded application treatment. This study demonstrates that the application of diuron and atrazine to raised beds only is a highly effective way of minimising migration of these herbicides in drainage water from furrow irrigated sugarcane. PMID:23973548

  12. Enhanced s-triazine Degradation and Sugar Cane Weed Control Options

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Soil borne bacteria on all continents except Antarctica have developed the ability to rapidly degrade the herbicide atrazine. Reduced residual weed control with atrazine in soils exhibiting enhanced degradation was confirmed under Mississippi Delta corn production and is expected to be occurring in...

  13. Identification and Structural Characterization of Novel Cyclotide with Activity against an Insect Pest of Sugar Cane*

    PubMed Central

    Pinto, Michelle F. S.; Fensterseifer, Isabel C. M.; Migliolo, Ludovico; Sousa, Daniel A.; de Capdville, Guy; Arboleda-Valencia, Jorge W.; Colgrave, Michelle L.; Craik, David J.; Magalhães, Beatriz S.; Dias, Simoni C.; Franco, Octávio L.

    2012-01-01

    Cyclotides are a family of plant-derived cyclic peptides comprising six conserved cysteine residues connected by three intermolecular disulfide bonds that form a knotted structure known as a cyclic cystine knot (CCK). This structural motif is responsible for the pronounced stability of cyclotides against chemical, thermal, or proteolytic degradation and has sparked growing interest in this family of peptides. Here, we isolated and characterized a novel cyclotide from Palicourea rigida (Rubiaceae), which was named parigidin-br1. The sequence indicated that this peptide is a member of the bracelet subfamily of cyclotides. Parigidin-br1 showed potent insecticidal activity against neonate larvae of Lepidoptera (Diatraea saccharalis), causing 60% mortality at a concentration of 1 μm but had no detectable antibacterial effects. A decrease in the in vitro viability of the insect cell line from Spodoptera frugiperda (SF-9) was observed in the presence of parigidin-br1, consistent with in vivo insecticidal activity. Transmission electron microscopy and fluorescence microscopy of SF-9 cells after incubation with parigidin-br1 or parigidin-br1-fluorescein isothiocyanate, respectively, revealed extensive cell lysis and swelling of cells, consistent with an insecticidal mechanism involving membrane disruption. This hypothesis was supported by in silico analyses, which suggested that parigidin-br1 is able to complex with cell lipids. Overall, the results suggest promise for the development of parigidin-br1 as a novel biopesticide. PMID:22074926

  14. Sugar Sensing and Signaling

    PubMed Central

    Ramon, Matthew; Rolland, Filip; Sheen, Jen

    2008-01-01

    Plants, restricted by their environment, need to integrate a wide variety of stimuli with their metabolic activity, growth and development. Sugars, generated by photosynthetic carbon fixation, are central in coordinating metabolic fluxes in response to the changing environment and in providing cells and tissues with the necessary energy for continued growth and survival. A complex network of metabolic and hormone signaling pathways are intimately linked to diverse sugar responses. A combination of genetic, cellular and systems analyses have uncovered nuclear HXK1 (hexokinase1) as a pivotal and conserved glucose sensor, directly mediating transcription regulation, while the KIN10/11 energy sensor protein kinases function as master regulators of transcription networks under sugar and energy deprivation conditions. The involvement of disaccharide signals in the regulation of specific cellular processes and the potential role of cell surface receptors in mediating sugar signals add to the complexity. This chapter gives an overview of our current insight in the sugar sensing and signaling network and describes some of the molecular mechanisms involved. PMID:22303242

  15. Intestinal sugar transport.

    PubMed

    Drozdowski, Laurie A; Thomson, Alan B R

    2006-03-21

    Carbohydrates are an important component of the diet. The carbohydrates that we ingest range from simple monosaccharides (glucose, fructose and galactose) to disaccharides (lactose, sucrose) to complex polysaccharides. Most carbohydrates are digested by salivary and pancreatic amylases, and are further broken down into monosaccharides by enzymes in the brush border membrane (BBM) of enterocytes. For example, lactase-phloridzin hydrolase and sucrase-isomaltase are two disaccharidases involved in the hydrolysis of nutritionally important disaccharides. Once monosaccharides are presented to the BBM, mature enterocytes expressing nutrient transporters transport the sugars into the enterocytes. This paper reviews the early studies that contributed to the development of a working model of intestinal sugar transport, and details the recent advances made in understanding the process by which sugars are absorbed in the intestine. PMID:16586532

  16. Fluorescence study of sugars

    NASA Astrophysics Data System (ADS)

    Thongjamroon, Sunida; Pattanaporkratana, Apichart

    2015-07-01

    We studied photoemission of monosaccharides and disaccharides using laser-induced fluorescence spectroscopy. A 532- nm, 10 mW, laser was used to excite the samples and back-scattering signals were collected by a spectrometer. We found that most sugars show weak fluorescence in solid phase but do not fluoresce when dissolved in water solutions. The emission spectra show similar peak intensity at 590 nm, but they are different in emission intensities. We suggest that the fluorescence spectra may be used to differentiate sugar type, even though the origin of the fluorescence is unclear and needed further study.

  17. Trends in utilization of agro-industrial byproducts for production of bacteriocins and their biopreservative applications.

    PubMed

    Bali, Vandana; Panesar, Parmjit S; Bera, Manab B

    2016-04-01

    Bacteriocins are proteinaceous, ribosomally synthesized bio-molecules having major roles in food preservation due to their antimicrobial action against food spoilage microorganisms. These have gained importance in the last decades because of increasing interest in natural products and their applications in the field of biopreservation, pharmaceutical, aquaculture, livestock, etc. Their production is quite expensive which includes the cost of synthetic media and downstream processing of which 30% of the total production cost relies on synthetic media and nutritional supplements used for growth of microorganisms. The low cost agro-industrial by-products, rich in nutritional supplements, can act as a good substitute for high valued synthetic media. This review provides comprehensive information on the use of cost effective, renewable agro-industrial by-products as substrates for the production of bacteriocins and their application in food as biopreservatives. PMID:25430892

  18. Inulinase production in a batch bioreactor using agroindustrial residues as the substrate: experimental data and modeling.

    PubMed

    Mazutti, Marcio A; Corazza, Marcos L; Maugeri Filho, Francisco; Rodrigues, Maria Isabel; Corazza, Fernanda C; Treichel, Helen

    2009-01-01

    The production of inulinase employing agroindustrial residues as the substrate is a good alternative to reduce production costs and to minimize the environmental impact of disposing these residues in the environment. This study focused on the use of a phenomenological model and an artificial neural network (ANN) to simulate the inulinase production during the batch cultivation of the yeast Kluyveromyces marxianus NRRL Y-7571, employing a medium containing agroindustrial residues such as molasses, corn steep liquor and yeast extract. It was concluded that due to the complexity of the medium composition it was rather difficult to use a phenomenological model with sufficient accuracy. For this reason, an alternative and more cost-effective methodology based on ANN was adopted. The predictive capacity of the ANN was superior to that of the phenomenological model, indicating that the neural network approach could be used as an alternative in the predictive modeling of complex batch cultivations. PMID:18449567

  19. 1. RW Meyer Sugar Mill: 18761889. Threeroll sugar mill: oneton ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. RW Meyer Sugar Mill: 1876-1889. Three-roll sugar mill: one-ton daily processing capacity. Manufactured by Edwin Maw, Liverpool, England, ca. 1855-1870. View: Historical view, 1934, from T.T. Waterman collection, Hawaiian Sugar Planters' Association. Large rectangular piece lying in front of the mill is the top of the mill frame appearing in its proper place in 1928 views. - R. W. Meyer Sugar Mill, State Route 47, Kualapuu, Maui County, HI

  20. Converting sugars to sugar alcohols by aqueous phase catalytic hydrogenation

    DOEpatents

    Elliott, Douglas C. (Richland, WA); Werpy, Todd A. (West Richland, WA); Wang, Yong (Richland, WA); Frye, Jr., John G. (Richland, WA)

    2003-05-27

    The present invention provides a method of converting sugars to their corresponding sugar alcohols by catalytic hydrogenation in the aqueous phase. It has been found that surprisingly superior results can be obtained by utilizing a relatively low temperature (less than 120.degree. C.), selected hydrogenation conditions, and a hydrothermally stable catalyst. These results include excellent sugar conversion to the desired sugar alcohol, in combination with long life under hydrothermal conditions.

  1. Anaerobic treatability and biogas production potential studies of different agro-industrial wastewaters in Turkey.

    PubMed

    Demirer, G N; Duran, M; Ergüder, T H; Güven, E; Ugurlu, O; Tezel, U

    2000-01-01

    The anaerobic treatability and methane generation potential of the wastewaters of the three important agro-industries in Turkey, namely, cheese-making, poultry breeding and the olive-oil mill industries were studied. Biochemical methane potential (BMP) experiments were conducted for different initial chemical oxygen demand (COD) concentrations. The results indicate that anaerobic treatment was possible for all the wastewaters studied and the biogas produced had a high methane content. PMID:11587444

  2. Future sustainability of the sugar and sugar-ethanol industries

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Like many other food and chemical industries, the sugar and sugar-ethanol industries are facing important sustainability issues. The relatively low and fluctuating profit for sugar, the world-wide impetus to produce alternatives to petroleum-based fuels and reduce green house gases, and water- and ...

  3. Sediment-transport characteristics of Cane Creek, Lauderdale County, Tennessee

    USGS Publications Warehouse

    Carey, W.P.

    1993-01-01

    An investigation of the sediment-transport characteristics of Cane Creek in Lauderdale County, Tennessee, was conducted from 1985-88 to evaluate the potential for channel erosion induced by modifications (realignment and enlargement) and the potential ability of different flows to move bed and bank stabilizing material. Frequently occurring flows in Cane Creek are capable of moving sand-size material (0.0625 - 4.0 millimeters). During floods that equal or exceed the 2-year flood, Cane Creek is capable of moving very coarse gravel (32 - 64 millimeters). Boundary-shear values at bridges, where flow contractions occur, correspond to critical diameters in excess of 100 millimeters. Thus, the areas near bridges, where channel stability is most critical, are the areas where erosive power is greatest. Deepening and widening of Cane Creek has exposed large areas of channel boundary that are a significant source of raindrop-detached sediment during the early stages of a storm before stream flow increases signifi- cantly. This causes suspended-sediment concentration to peak while the flow hydrograph is just beginning to rise. For basins like Cane Creek, where runoff events commonly last less than a day and where variation in discharge and sediment concentrations are large, an estimate of sediment yield based on periodic observations of instantaneous values is subject to considerable uncertainty.

  4. Membrane filtration of agro-industrial wastewaters and isolation of organic compounds with high added values.

    PubMed

    Zagklis, Dimitris P; Paraskeva, Christakis A

    2014-01-01

    The aim of the current study was the exploitation of agro-industrial wastes or by-products such as olive mill wastewater (OMW) and defective wines. A cost-effective system for their maximum exploitation is suggested, using a combined process of membrane filtration and other physicochemical processes. Wastewaters are first treated in a membrane system (prefiltration, ultrafiltration, nanofiltration, and reverse osmosis) where pure water and other organic fractions (by-products) are obtained. Organic fractions, called hereafter byproducts and not wastes, are further treated for the separation of organic compounds and isolation of high added value products. Experiments were performed with OMW and defective wines as characteristic agro-industrial wastewaters. Profit from the exploitation of agro-industrial wastewaters can readily help the depreciation of the indeed high cost process of membrane filtration. The simple phenolic fraction of the OMW was successfully isolated from the rest of the waste, and problems occurring during winemaking, such as high volatile acidity and odours, were tackled. PMID:24434988

  5. The Maple Sugar Festival

    ERIC Educational Resources Information Center

    Johnston, Basil

    1978-01-01

    Describing the Iroquoi's Maple Sugar Festival, this article details the symbolism of renewal, becoming, and regeneration celebrated by the Iroquoi as the sap from the maple trees begins to flow each year. The symbolic role of woman, the sweet sap itself, and man's fellow creatures are described. (JC)

  6. Sugar beet traditional breeding.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    With rapidly changing agricultural practices, target environments, and biotic and abiotic stresses, plant breeders face the task of continually selecting plants with desirable traits with the goal to assemble advantageous combinations of genes in new varieties. Sugar beet has been selectively bred s...

  7. SUGAR BEET QUALITY IMPROVEMENT

    Technology Transfer Automated Retrieval System (TEKTRAN)

    More than one third of the sucrose (sugar) consumed by humans is obtained from sugarbeet (Beta vulgaris L.). Sucrose extraction begins with the production of a dark opaque juice from strips of sugarbeet. This juice is purified with lime and carbon dioxide, thickened by evaporation, and crystallize...

  8. Manage your blood sugar (image)

    MedlinePLUS

    Checking your blood sugar levels often and writing down the results will tell you how well you are managing your diabetes so you ... possible. The best times to check your blood sugar are before meals and at bedtime. Your blood ...

  9. Low blood sugar symptoms (image)

    MedlinePLUS

    ... nervousness and irritability are signs that a person's blood sugar is getting dangerously low. A person showing any of these symptoms should check their blood sugar. If the level is low (70 mg/dl), ...

  10. Cytokinins in the xylem sap of grape vine canes: Changes in activity during cold-storage.

    PubMed

    Skene, K G

    1972-03-01

    Xylem sap extracted under suction from dormant grape vine canes (one-year-old woody stems) had only slight cytokinin activity compared with sap from growing canes when tested on soybean callus. Highest activity was detected in sap from canes harvested whilst dormant and subsequently stored for six months in sealed plastic bags at 1°. The significance of the findings is discussed. PMID:24481659

  11. Bioreactors for lignocellulose conversion into fermentable sugars for production of high added value products.

    PubMed

    Liguori, Rossana; Ventorino, Valeria; Pepe, Olimpia; Faraco, Vincenza

    2016-01-01

    Lignocellulosic biomasses derived from dedicated crops and agro-industrial residual materials are promising renewable resources for the production of fuels and other added value bioproducts. Due to the tolerance to a wide range of environments, the dedicated crops can be cultivated on marginal lands, avoiding conflict with food production and having beneficial effects on the environment. Besides, the agro-industrial residual materials represent an abundant, available, and cheap source of bioproducts that completely cut out the economical and environmental issues related to the cultivation of energy crops. Different processing steps like pretreatment, hydrolysis and microbial fermentation are needed to convert biomass into added value bioproducts. The reactor configuration, the operative conditions, and the operation mode of the conversion processes are crucial parameters for a high yield and productivity of the biomass bioconversion process. This review summarizes the last progresses in the bioreactor field, with main attention on the new configurations and the agitation systems, for conversion of dedicated energy crops (Arundo donax) and residual materials (corn stover, wheat straw, mesquite wood, agave bagasse, fruit and citrus peel wastes, sunflower seed hull, switchgrass, poplar sawdust, cogon grass, sugarcane bagasse, sunflower seed hull, and poplar wood) into sugars and ethanol. The main novelty of this review is its focus on reactor components and properties. PMID:26572518

  12. Efficient polygalacturonase production from agricultural and agro-industrial residues by solid-state culture of Aspergillus sojae under optimized conditions.

    PubMed

    Heerd, Doreen; Diercks-Horn, Sonja; Fernández-Lahore, Marcelo

    2014-01-01

    Previously identified fungal pectinase producers of the species Aspergillus sojae were used for optimization of polygalacturonase production in solid-state fermentation applying Design of Experiment. The effects of media composition and several process parameters, like inoculum size, moisture level, incubation time and temperature on polygalacturonase activity were studied in screening and optimization investigations. Utilization of agricultural and agro-industrial by-products provided the establishment of a cost-efficient and sustainable process for enzyme production. Comparison of pectinase production by A. sojae ATCC 20235 and A. sojae CBS 100928 under optimized conditions yielded 6.9 times higher polygalacturonase activity by A. sojae ATCC 20235. Highest enzyme yield (909.5?±?2.7 U/g) was obtained by A. sojae ATCC 20235 after 8 days at 30°C applying 30% sugar beet pulp as inducer substrate in combination with wheat bran as medium wetted at 160% with 0.2 M HCl. Furthermore, an overview of pectinolytic enzyme activities present in the extracts of both strains is provided. Protein profiles of both strains are given by SDS-PAGE electrophoresis, as well as zymograms for pectinolytic enzymes in comparison to commercial pectinase preparations. PMID:25674471

  13. Know Your Blood Sugar Numbers

    MedlinePLUS

    Know Your Blood Sugar Numbers If you have diabetes, keeping your blood sugar (glucose) numbers in your target range can help you feel ... Prevention There are two ways to measure blood sugar. 1 The A1C is a lab test that ...

  14. Production of thermo-alkali-stable xylanase by a novel polyextremophilic Bacillus halodurans TSEV1 in cane molasses medium and its applicability in making whole wheat bread.

    PubMed

    Kumar, Vikash; Satyanarayana, T

    2014-06-01

    A high titre of thermo-alkali-stable xylanase was attained in cane molasses medium. When the culture variables for endoxylanase production were optimized [cane molasses 7 %, soluble alkaline extract of wheat bran (SAE-WB) 37 % and ammonium chloride 0.30 %], a 4.5-fold enhancement in xylanase production (69 U ml(-1)) was achieved as compared to that in the unoptimized medium (15 U ml(-1)). The enzyme titre attained in shake flasks could be sustained in a 7-l laboratory bioreactor. An activity band corresponding to 40 kDa was visualized on SDS-PAGE zymogram analysis. The enzyme has broad range of pH and temperature for activity with optima at 9.0 and 80 °C, and stable between pH 4.0 and 11.0 with 85 % retention of activity. It has T 1/2 of 40 and 15 min at 70 and 80 °C. The enzyme is halotolerant since it displays activity in the presence of salt up to 15 %, and remains 100 % active in the absence of salt. The supplementation of whole wheat dough with xylanase improves antistaling property, reducing sugar content, bread volume with prebiotic xylooligosaccharides in bread. This is the first report on xylanase production in cane molasses medium with SAE-WB as the inducer and its applicability in whole wheat bread making that improves human health. PMID:24297158

  15. The use of cane molasses for the manufacture of motor fuels as experienced in the early 1920s

    SciTech Connect

    Freeland, E.C.

    1980-12-01

    During the years 1919-1923 alcohol motor fuel was manufactured from sugar cane molasses in British Guiana. This alcohol motor fuel, known by the trade name of Alcolene, consisted of a mixture of about 63% ethyl alcohol, 35% ethyl ether, and 1% gas oil and pyridine. It was produced by fermenting cane molasses for the production of ethyl alcohol and afterwards manufacturing ethyl ether by treating a part of the ethyl alcohol with sulphuric acid in special distillation equipment manufactured by Walter E. Lummus., Boston, Massachusetts which mixed the alcohol and ether during the manufacturing process. No refrigeration was required. This Alcolene Motor Fuel was sold on the market in British Guiana for several years and used successfully in many types of gasolene engines with very little adjustment of the engines. Alcolene gave about 20 miles per US gallon as compared with 22.5 miles per gallon of gasolene. The motor engines remained in perfect condition when using this alcohol motor fuel.

  16. Trends in sugar supply and consumption in Australia: is there an Australian Paradox?

    PubMed Central

    2013-01-01

    Background High consumption of refined carbohydrate, in particular sugar, has been identified as a possible contributory factor in greater risk of excess weight gain. In spite of data limitations, one recent paper suggests that Australian sugar consumption has decreased over the same time period that obesity has increased, a so called ‘Australian Paradox’. Given the significant public health focus on nutrition, we aimed to estimate Australian sugar supply and consumption over recent decades, to determine whether these data could be used to make any conclusions about sugar’s role in obesity. Methods Foods high in sugar were identified. Data relating to sugar supply and consumption from 1988 to 2010 were obtained from multiple sources. Using these data we attempted to generate a time series estimate of sugar in Australia’s food supply. Results Australia produces and exports sugar from sugar cane and the sugar in imported foods has received little attention. We were unable to produce a reliable and robust estimate of total sugars in the Australian diet due to data limitations and a lack of current data sources. However, available Import data showed large increases in the volume and value of imported sweetened products between 1988 and 2010 to over 30 grams of sugar per person per day. Value estimates of local production of sweetened products also show substantial increases in this period. Conclusion The Australian Paradox assertion is based on incomplete data, as it excludes sugar contained in imported processed foods, which have increased markedly. A major Australian public health target is to improve the quality of the food supply, and actions have been set in terms of achieving broader environmental changes. However, evaluation of progress is hampered by lack of high quality data relating to supply and consumption. We recommend the regular collection of comprehensive food supply statistics, which include both local production and imports. This would provide an inexpensive addition to survey data and could assist in monitoring sugar consumption trends in food supply. Such information would also help inform public health policy. PMID:23866719

  17. Starches, Sugars and Obesity

    PubMed Central

    Aller, Erik E. J. G.; Abete, Itziar; Astrup, Arne; Martinez, J. Alfredo; van Baak, Marleen A.

    2011-01-01

    The rising prevalence of obesity, not only in adults but also in children and adolescents, is one of the most important public health problems in developed and developing countries. As one possible way to tackle obesity, a great interest has been stimulated in understanding the relationship between different types of dietary carbohydrate and appetite regulation, body weight and body composition. The present article reviews the conclusions from recent reviews and meta-analyses on the effects of different starches and sugars on body weight management and metabolic disturbances, and provides an update of the most recent studies on this topic. From the literature reviewed in this paper, potential beneficial effects of intake of starchy foods, especially those containing slowly-digestible and resistant starches, and potential detrimental effects of high intakes of fructose become apparent. This supports the intake of whole grains, legumes and vegetables, which contain more appropriate sources of carbohydrates associated with reduced risk of cardiovascular and other chronic diseases, rather than foods rich in sugars, especially in the form of sugar-sweetened beverages. PMID:22254101

  18. Quantification of long cane usage characteristics with the constant contact technique.

    PubMed

    Kim, Yeongmi; Moncada-Torres, Arturo; Furrer, Jonas; Riesch, Markus; Gassert, Roger

    2016-07-01

    While a number of Electronic Travel Aids (ETAs) have been developed over the past decades, the conventional long cane remains the most widely utilized navigation tool for people with visual impairments. Understanding the characteristics of long cane usage is crucial for the development and acceptance of ETAs. Using optical tracking, cameras and inertial measurement units, we investigated grasp type, cane orientation and sweeping characteristics of the long cane with the constant contact technique. The mean cane tilt angle, sweeping angle, and grip rotation deviation were measured. Grasp type varied among subjects, but was maintained throughout the experiments, with thumb and index finger in contact with the cane handle over 90% of the time. We found large inter-subject differences in sweeping range and frequency, while the sweeping frequency showed low intra-subject variability. These findings give insights into long cane usage characteristics and provide critical information for the development of effective ETAs. PMID:26965194

  19. Mechanical planter update: 2007 Bayou Teche test plant cane results

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mechanization of cane planting has been somewhat limited, due to the fact that the entire 4-5 ft stalk must be planted horizontally in the seedbed. Several modifications were made to mechanical planters by a grower cooperator. To test the modifications, a replicated field trial was planted on Augus...

  20. Smoking, caning, and delinquency in a secondary modern school.

    PubMed

    Palmer, J W

    2015-02-01

    This study was designed in 1962 to investigate the reformative effect of a particular punishment (caning) for a particular offence (smoking by schoolboys). In 1964, in the course of a larger study of juvenile offences, delinquency records were obtained from the police, and the relationship between smoking and delinquency is also discussed in this paper. PMID:25599693