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›› 2006, Vol. 40 ›› Issue (S1): 165-168.

• 研究报告 • Previous Articles     Next Articles

Simultaneous Saccharification and Fermentation of Steam Pretreated Lespedeza Stalks for the Production of Ethanol

JIANG Jian-xin, ZHU Li-wei, WANG Kun, WANG Wei-gang   

  1. Department of Chemical Engineering, Beijing Forestry University, Beijing 100083, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30

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

Key words: lespedeza stalks, steam explosion, simultaneous saccharification and fermentation, ethanol

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