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Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol

Jiang Jian-xin Zhu Li-wei Wang Kun Wang Wei-gan

中国林学(英文版)2006,Vol.8Issue(3):30-33,4.
中国林学(英文版)2006,Vol.8Issue(3):30-33,4.

Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol

Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol

Jiang Jian-xin 1Zhu Li-wei 1Wang Kun 1Wang Wei-gan1

作者信息

  • 1. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, P. R. China
  • 折叠

摘要

Abstract

Lespedeza stalks were subjected to steam pretreatment at 210℃ for some steaming time before simultaneous saccharification and fermentation (SSF). Cellulose-derived glucose was extensively utilized by yeast during SSF. The ethanol yields after steam pretreatment of the lespedeza stalks at 210℃ were 59.3%, 72.8% and 62.2% of the theoretically expected values when the steaming times were 2, 4 and 6 min, respectively. The highest yield from α-cellulose was 92.7% of the theoretical value. Steam explosion pretreatment of lespedeza stalks increased ethanol yields by a factor of 4.4, from 16.4% (untreated) to 72.8% (steam explosion pretreated).

关键词

ethanol/lespedeza stalks/steam explosion/simultaneous saccharification and fermentation

Key words

ethanol/lespedeza stalks/steam explosion/simultaneous saccharification and fermentation

分类

农业科技

引用本文复制引用

Jiang Jian-xin,Zhu Li-wei,Wang Kun,Wang Wei-gan..Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol[J].中国林学(英文版),2006,8(3):30-33,4.

中国林学(英文版)

2095-6355

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