文献类型：期刊文献

英文题名：Cellulosic Ethanol Fermentation Using Saccharomyces cerevisiae Seeds Cultured by Pretreated Corn Stover Material

作者：Qureshi, Abdul Sattar[1,2];Zhang, Jian[1];Bao, Jie[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Univ Sindh, Inst Biotechnol & Genet Engn, Jamshoro 76080, Sindh, Pakistan

年份：2015

卷号：175

期号：6

起止页码：3173

外文期刊名：APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY

收录：;EI(收录号：20150500481153);WOS:【SCI-EXPANDED(收录号:WOS:000350881100031)】；

基金：This research was supported by the National Basic Research Program of China (2011CB707406), the National High-Tech Program of China (2012AA022301, 2014AA021901), the Natural Science Foundation of China (21306048), and the Open Funding Program of the State Key Laboratory of Bioreactor Engineering.

语种：英文

外文关键词：Seed culture; Corn stover (CS) solids; Carbon source; Saccharomyces cerevisiae DQ1; Simultaneous saccharification and ethanol fermentation (SSF)

摘要：Utilization of lignocellulose materials to replace the pure glucose for preparation of the fermenting yeast seeds could reduce the cost of ethanol fermentation, because a large quantity of glucose is saved in the large-scale seed fermentor series. In this study, Saccharomyces cerevisiae DQ1 was cultured using the freshly pretreated corn stover material as the carbon source, and then the culture broth was used as the inoculation seeds after a series of seed transfer and inoculated into the ethanol production fermentor. The results show that the yeast cell growth and ethanol fermentation performance have essentially no difference when the yeast seeds were cultured by glucose, the corn stover hydrolysate liquid, and the pretreated corn stover solids as carbon sources, respectively. Approximately 22 % of the yeast cell culture cost was saved, and the process flow sheet in industrial scale plants was simplified by using the pretreated corn stover for seed culture. The results provided a practical method for materials and operational cost reduction for cellulosic ethanol production.