The effect of fermentation configurations and FAN supplementation on ethanol production from sorghum grains under very-high-gravity conditions
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
The effect of fermentation configurations and FAN supplementation on ethanol production from sorghum grains under very-high-gravity conditions
학술지
Journal of the Taiwan Institute of Chemical Engineers
저자명
Chang, J.W.; Lin, Y.H.; Huang, L.Y.; Duan, K.J.
초록
A 2<SUP>2</SUP> experimental plan was implemented to investigate the effect of free amino nitrogen (FAN) supplementation on sorghum fermentation under very-high-gravity (VHG) conditions. A rapid initial FAN uptake rate signified insufficient provision of utilizable nitrogen by sorghum mash alone. The ethanol productivity was 3.03g/(Lh) (equivalent to 146g/L ethanol in 48h when FAN was added) as compared to 0.93g/(Lh) (equivalent to 144g/L ethanol in 156h when FAN was not added) using configuration of simultaneous saccharification and fermentation (SSF). Whereas, ethanol productivity was 2.18g/(Lh) (equivalent to 139g/L ethanol in 64h when FAN was provided) as compared to 0.68g/(Lh) (equivalent to 125g/L ethanol in 185h when FAN was not provided) using configuration of saccharification followed by fermentation (S>F). Results indicate that SSF configuration with addition of FAN-containing substances is the most efficient fermentation configuration among investigated cases. Such a configuration results in the highest ethanol yield and the shortest fermentation time. The ethanol productivity of this configuration was increased by 60% as compared to other similar findings reported previously.