文献类型：期刊文献

英文题名：Inhibitor analysis and adaptive evolution of Saccharomyces cerevisiae for simultaneous saccharification and ethanol fermentation from industrial waste corncob residues

作者：Gu, Hanqi[1];Zhang, Jian[1];Bao, Jie[1,2]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]State Key Lab Motor Vehicle Biofuel Technol, Nanyang 473000, Henan, Peoples R China

年份：2014

卷号：157

起止页码：6

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20140717337217);WOS:【SCI-EXPANDED(收录号:WOS:000334829600002)】；

基金：This research was supported by the National Basic Research Program of China (2011CB707406/2013CB733902), the Natural Science Foundation of China (21306048), the National High-Tech Program of China (2012AA022301), the Fundamental Research Funds for the Central Universities of China (WF1214025), the Open Funding Project of the Key Laboratory of Motor Vehicle Biofuel Technology, the Open Funding Project of the Key Laboratory for Solid Waste Management and Environment Safety (SWMES2011-10) of Ministry of Education of China.

语种：英文

外文关键词：Corncob residues (CCR); Saccharomyces cerevisiae DQ1; Evolutionary adaptation; Water-insoluble phenolic inhibitors; Simultaneous saccharification and ethanol fermentation (SSF)

摘要：Industrial waste corncob residues (CCR) are rich in cellulose and can be hydrolyzed directly without pretreatment. However, a poor fermentation performance was frequently observed in the simultaneous saccharification and ethanol fermentation (SSF) of CCR, although the furans and organic acid inhibitors were very low. In this study, the high level of water-insoluble phenolic compounds such as 2-furoic acid, ferulic acid, p-coumaric acid, guaiacol, and p-hydroxybenzoic acid were detected in CCR and inhibited the growth and metabolism of Saccharomyces cerevisiae DQ1. An evolutionary adaptation strategy was developed by culturing the S. cerevisiae DQ1 strain in a series of media with the gradual increase of CCR hydrolysate. The high ethanol concentration (62.68 g/L) and the yield (55.7%) were achieved in the SSF of CCR using the adapted S. cerevisiae DQ1. The results provided a practical method for improving performance of simultaneous saccharification and ethanol production from CCR. (C) 2014 Elsevier Ltd. All rights reserved.