期刊
BIOMASS & BIOENERGY
卷 32, 期 7, 页码 596-602出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2007.12.008
关键词
thippi; enzymatic hydrolysis; fermentation; ethanol; reducing sugars
Ethanol production from agro-industrial waste (thippi) was analyzed as low-cost feedstock using mixed culture fermentation. Reducing sugars yield by acid hydrolysis was 395.2 g kg(-1) thippi and ethanol yield was 35.8 g kg(-1) thippi. However, reducing sugars in enzyme hydrolysis was 535.33 g kg(-1) thippi, which resulted in 254.45 g ethanol yield kg(-1) thippi (72.8 g l(-1), using mixed culture), revealed 93.18% of the theoretical yield of ethanol. Zymomonas mobilis alone yielded 228.55 g ethanol kg(-1) thippi (65.3 g l(-1)), which is 82.83% of the theoretical yield and Candida tropicalis alone yielded 214.2 g ethanol kg(-1) thippi (61.2 g ethanol l(-1)), reaching more than the published value for C. tropicalis with starch. This is 76.58% of the theoretical yield. These data are of 11 fermentor. Ethanol fermentation from thippi hydrolysate was then scaled up to 101 fermentor; ethanol yield was 219.63 g kg(-1) thippi, which was 78.82% of the theoretical yield. (C) 2008 Elsevier Ltd. All rights reserved.
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