Onsite bio-detoxification of steam-exploded corn stover for cellulosic ethanol production

被引：51

作者：

Yu, Yanling ^{[1
]}

Feng, Yujie ^{[1
]}

Xu, Chen ^{[1
]}

Liu, Jia ^{[1
]}

Li, Dongmei ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 08期

基金：

美国国家科学基金会;

关键词：

Cellulosic ethanol production; Inhibitors; Biological detoxification; Enzyme production; Fermentation; SACCHAROMYCES-CEREVISIAE; ASPERGILLUS-NIDULANS; ENZYMATIC-HYDROLYSIS; ACETIC-ACID; RICE STRAW; FERMENTATION; PRETREATMENT; INHIBITION; TECHNOLOGY; CELLULASES;

D O I：

10.1016/j.biortech.2011.01.067

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In the process of ethanol production from steam-exploded corn stover (SECS), a cellulose-degradation strain a; Aspergillus nidulans (FLZ10) was investigated whether it could remove the inhibitors released from steam exploded pretreatment, and thereby be used for biological detoxification on Saccharomyces cerevisiae. The results showed that FLZ10 removed 75.2% formic acid, 53.6% acetic acid, and 100% hydroxymethyl furfural (5-HMF) and furfural from the hydrolysate washed from SECS after 72 h cultivation. A cellulose activity of 0.49 IU/ml was simultaneously produced while the biological detoxification occurred. An ethanol yield of 0.45 g/g on glucose was obtained in the hydrolysate biodetoxified by FLZ10. The glucose consumption rate of FLZ10 was much lower than that of S. cerevisiae, thereby it had little competition with S. cerevisiae on glucose consumption. Based on SECS to ethanol mass balance analysis, with the onsite bio-detoxification, fermentation using S. cerevisiae effectively converted monomeric glucose with 94.4% ethanol yield. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.

引用

页码：5123 / 5128

页数：6

共 32 条

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