臭氧预处理对玉米秸秆酶解性能的影响

doi:10.3969/j.issn.0253-2417.2015.06.010

Abstract

Abstract: The corn stover was ozonolyzed and enzymatically hydrolyzed into fermentable sugar.The effects of ozone treatment on corn stovers with different particle sizes and moistures were studied.The optimum particle size and moisture content were determined.The results showed the corn stover with small particle size (< 48 μm) and moisture 60% was preferred for ozonolysis.The lignin content was decreased to 2.96% from 15.04% (raw) and saccharification rate was increased to 39.80% from 9.17% (raw).The effects of reaction time on ozonolysis under the optimum conditions were also investigated.The lignin was gradually degraded with the rising of ozonolysis time, and the saccharification rate was about 40.29% after 75 min.The strong linearity between ozone consumption and lignin degradation rate revealed that ozone mainly reacted with lignin, and resulted in the degradation of the lignin.Ozonolysis treatment could improve the hydrolysis of corn stover effectively.

Key words: corn stover, ozonolysis treatment, lignin, enzymatic hydrolysis, linear fitting

CLC Number:

TQ353.4+2

LI Cheng, WANG Li, LI Yong-fu, WANG Ren, CHEN Zheng-xing. Effects of Ozone Pretreatment on the Enzymatic Hydrolysis Efficiency of Corn Stover[J]. Chemistry and Industry of Forest Products, 2015, 35(6): 58-62.

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Effects of Ozone Pretreatment on the Enzymatic Hydrolysis Efficiency of Corn Stover

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