Enhanced enzymatic hydrolysis and structural features of corn stover by FeCl3 pretreatment

被引：240

作者：

Liu, Li ^{[1
]}

Sun, Junshe ^{[1
]}

Li, Min ^{[1
]}

Wang, Shuhao ^{[1
]}

Pei, Haisheng ^{[1
]}

Zhang, Jingsheng ^{[1
]}

机构：

[1] China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 23期

基金：

美国国家科学基金会;

关键词：

FeCl3; pretreatment; Enzymatic hydrolysis; Cellulose; Structural features; DILUTE SULFURIC-ACID; RECYCLE PERCOLATION PROCESS; HOT-WATER PRETREATMENT; WHEAT-STRAW; BIOMASS PRETREATMENT; CELLULOSIC ETHANOL; AQUEOUS GLYCEROL; SUGAR RECOVERY; DIGESTIBILITY; LIGNIN;

D O I：

10.1016/j.biortech.2009.06.040

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Corn stover was pretreated with FeCl3 to remove almost all of the hemicellulose present and then hydrolyzed with cellulase and beta-glucosidase to produce glucose. Enzymatic hydrolysis of corn stover that had been pretreated with FeCl3 at 160 degrees C for 20 min resulted in an optimum yield of 98.0%. This yield was significantly higher than that of untreated corn stover (22.8%). FeCl3 pretreatment apparently damaged the surface of corn stover and significantly increased the enzymatic digestibility, as evidenced by SEM and XRD analysis data. FTIR analysis indicated that FeCl3 pretreatment could disrupt almost all the ether linkages and some ester linkages between lignin and carbohydrates but had no effect on delignification. The FeCl3 pretreatment technique, as a novel pretreatment method, enhances enzymatic hydrolysis of lignocellulosic biomass by destructing chemical composition and altering structural features. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5853 / 5858

页数：6

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