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Enzymatic Hydrolysis of Rice Straw Pretreated with Ammonia

文献类型： 外文期刊

作者： Li, Jiayou 1 ; Yei, Xiaomei 2 ; Ruan, Shanming 1 ; Cai, Liling 1 ; Chang, Zhizhou 2 ;

作者机构： 1.Jiaxing Univ, Coll Biol & Chem Engn, Jiaxing 314001, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resource & Enviromental Sci, Nanjing 210014, Jiangsu, Peoples R China

关键词： rice straw;ammonia;pretreatment;enzymatic hydrolysis;orthogonal methodolog

期刊名称：CONFERENCE ON ENVIRONMENTAL POLLUTION AND PUBLIC HEALTH, VOL 1-2

ISSN：

年卷期： 2010 年

页码：

收录情况： SCI

摘要： In this study, Orthogonal methodology were employed to plan experiments and optimize the ammonia pretreatment of rice straw. Experimental results show that concentration of ammonia (CA), treatment time (TT) and powder size of rice straw (PS) were main factors governing the enzymatic saccharification of rice straw. The result showed that the influential extent of the affecting factors to the enzymatic hydrolysis was CA > PS > TT. The F value of CA was 8.42 and beyond F-0.01(3,9) further in the orthogonal experiment. The reducing sugars produced by enzymes was increased from 0.8 g/L (untreated rice straw) up to 12.2 g/L (pretreated). The chemical composition analysis of straw confirmed that ammonia pretreatment could disrupt the silicified waxy surface, break down the lignin-hemicellulose complex and partially remove silicon and lignin.

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