کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10395837 | 889079 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ethanol production from non-starch carbohydrates of wheat bran
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Wheat bran (WB), produced worldwide in large quantities as a by-product of the wheat milling industry, constitutes a significant underutilized source of sugars. This paper describes various methods of hydrolyzing the abundant polysaccharides in bran to yield a sugar feedstock suitable for fermentation into bioethanol. Firstly, the starch in the bran was released using amylolytic enzymes. The fibrous material remaining was further hydrolyzed. Acid hydrolysis, heat pretreatment followed by enzymatic hydrolysis and direct enzymatic hydrolysis were compared in terms of total sugar yield and pentose sugar yield. The maximum total sugar yield was achieved when small amounts of acid were added at the pretreatment step prior to enzymatic hydrolysis. This form of pretreatment released most pentosans and significantly enhanced the hydrolysis of cellulose. The overall sugar yield of this combined hydrolysis method reached 80% of the theoretical and it consisted of 13.5Â g arabinose, 22.8Â g xylose and 16.7Â g glucose per 100Â g starch-free bran.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 96, Issue 7, May 2005, Pages 843-850
Journal: Bioresource Technology - Volume 96, Issue 7, May 2005, Pages 843-850
نویسندگان
Beatriz Palmarola-Adrados, Pavla ChotÄborská, Mats Galbe, Guido Zacchi,