玉米秸秆半同步与同步糖化发酵的研究

doi:10.3969/j.issn.0253-2417.2015.03.010

Abstract

Abstract: Corn stover pretreated by green liquor was hydrolyzed for 24 h at an initial substrate concentration of 100 g/L and a fed-batch of 50 g/L substrate for 6 h and 12 h,respectively,and then simultaneously saccharified and fermented for 48 h.Ethanol with a mass concentration of 47.58 g/L and a yield with 0.42 g/g cellulose was obtained.As the corn stover was pretreated under the same condition for 72 h,and the mass concentration and the yield of ethanol were 48.57 g/L ethanol and 0.43 g/g cellulose, respectively.Compared to semi-simultaneous saccharification and fermentation based on pre-hydrolysis,the simultaneous saccharification and fermentation were suitable for the bioconversion of pretreated corn stover at high substrate loading.

Key words: corn stover, semi-simultaneous saccharification and fermentation, simultaneous saccharification and fermentation, ethanol

CLC Number:

TQ35

YANG De-liang, CHU Qiu-lu, LAI Chen-huan, XIE Yi-hui, LI Xin, YU Shi-yuan, YONG Qiang. Semi-simultaneous/Simultaneous Saccharification and Fermentation of Corn Stover[J]. Chemistry and Industry of Forest Products, 2015, 35(3): 55-59.

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Semi-simultaneous/Simultaneous Saccharification and Fermentation of Corn Stover

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