| Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol |
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| 作者姓名： | Jiang Jian-xin Zhu Li-wei Wang Kun Wang Wei-gan |
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| 作者单位： | Jiang Jian-xin* Zhu Li-wei Wang Kun Wang Wei-gan College of Materials Science and Technology，Beijing Forestry University，Beijing 100083，P. R. China |
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| 摘 要： | 1 Introduction Ethanol is now recognized as a potential alternative to petroleum-derived vehicle fuels, and offers environ- mental advantages. The combustion of biofuels does not result in a net contribution of CO2 to the atmos- phere, so they do not contribute to the greenhouse ef- fect. Lignocellulosic material is the most abundant renewable resource available for the production of fuel ethanol. The cellulose and hemicellulose fractions of lignocellulosic material can be hydrolyzed to sugar…
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| 关 键 词： | 乙醇 糖化作用 发酵 纤维素 生物燃料 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006-05-30 |
Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol |
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| 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].Forestry Studies in China,2006,8(3):30-33. |
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| Authors: | Jian-xin Jiang Li-wei Zhu Kun Wang Wei-gan Wang |
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| Institution: | College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, P. R. China |
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| Abstract: | Lespedeza stalks were subjected to steam pretreatment at 210°C 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°C 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). |
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| Keywords: | ethanol lespedeza stalks steam explosion simultaneous saccharification and fermentation |
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