Biotransformation of wheat straw to bacterial cellulose and its mechanism

被引：130

作者：

Chen, Lin ^{[1
,2
]}

Hong, Feng ^{[1
,2
]}

Yang, Xue-xia ^{[1
]}

Han, Shi-fen ^{[1
]}

机构：

[1] Donghua Univ, Coll Chem Chem Engn & Biotechnol, Grp Microbiol Engn & Ind Biotechnol, Shanghai 201620, Peoples R China

[2] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 135卷

关键词：

Bacterial cellulose; Biorefinery; Wheat straw; Ionic liquid pretreatment; 1-Allyl-3-methylimidazolium chloride; ([AMIM]CI); IONIC LIQUID PRETREATMENT; ENZYMATIC-HYDROLYSIS; SACCHARIFICATION; BIOMASS;

D O I：

10.1016/j.biortech.2012.10.029

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An ionic liquid IAMIMICI was used to pretreat wheat straw with an aim to remarkably improve enzymatic hydrolysis rate and yield of fermentable sugars. Some influence factors including dosage of straw, particle size of straw meal as well as pretreatment time and temperature were investigated. After optimization, the hydrolytic efficiency of regenerated straw increased obviously as compared to untreated materials, and the sugar yield of straw was 71.2% after pretreatment in IAMIMICI at 110 degrees C for 1.5 h with a 3 w/w% straw dosage, 3.6 times higher than that of untreated straw (19.6%). The reason behind the acceleration of enzymatic hydrolysis was discussed by the analysis of SEM, XRD and FTIR. The yield of bacterial cellulose obtained in straw hydrolysates was higher than that in glucose-based media. This may be due to the presence of other complex components in the hydrolysate that would enhance the formation of bacterial cellulose. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：464 / 468

页数：5

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