کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10394997 | 888967 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancing alfalfa conversion efficiencies for sugar recovery and ethanol production by altering lignin composition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancing alfalfa conversion efficiencies for sugar recovery and ethanol production by altering lignin composition Enhancing alfalfa conversion efficiencies for sugar recovery and ethanol production by altering lignin composition](/preview/png/10394997.png)
چکیده انگلیسی
Alfalfa (Medicago sativa L.) biomass was evaluated for biochemical conversion into ethanol using dilute-acid and ammonia pretreatments. The two alfalfa lines compared were a reduced S-lignin transgenic cultivar generated through down regulation of the caffeic acid O-methyltransferase gene and a wild-type control. Both were harvested at two maturities. All the samples had similar carbohydrate contents including a mean composition of 316Â g glucan and 497Â g total neutral carbohydrates per kg dry biomass, which corresponds to a theoretic ethanol yield of 382Â l/ton. Ethanol yields for alfalfa stems pretreated with dilute-acid were significantly impacted by harvest maturity and lignin composition, whereas when pretreated with dilute-ammonia, yield was solely affected by lignin composition. Use of a recombinant xylose-fermenting Saccharomyces strain, for converting the ammonia pretreated alfalfa samples, further increased ethanol yields. Ethanol yields for the xylose-fermenting yeast were 232-278Â l/ton and were significantly enhanced for the reduced S lignin cultivars.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 11, June 2011, Pages 6479-6486
Journal: Bioresource Technology - Volume 102, Issue 11, June 2011, Pages 6479-6486
نویسندگان
Bruce S. Dien, David J. Miller, Ronald E. Hector, Richard A. Dixon, Fang Chen, Mark McCaslin, Peter Reisen, Gautam Sarath, Michael A. Cotta,