Investigation of the pellets produced from sugarcane bagasse during liquid hot water pretreatment and their impact on the enzymatic hydrolysis

被引：21
作者：
Wang, Wen [1 ]
Zhuang, Xinshu [1 ]
Yuan, Zhenhong [1 ]
Yu, Qiang [1 ]
Qi, Wei [1 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 190卷
关键词：
Liquid hot water; Alkaline wash; Lignin pellets; Enzymatic hydrolysis; Sugarcane bagasse; SWEET SORGHUM BAGASSE; LIGNOCELLULOSIC MATERIALS; HYDROTHERMAL PRETREATMENT; STRUCTURAL-CHANGES; LIGNIN; CELLULOSE; SACCHARIFICATION; DELIGNIFICATION; WOOD; ADSORPTION;
D O I：
10.1016/j.biortech.2015.04.059
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In the process of liquid hot water (LHW) pretreatment, there are numbers of pellets formed on the lignocellulosic surface. The characteristics and effect of pellets on the enzymatic hydrolysis of LHW-treated sugarcane bagasse (SCB) were investigated. After SCB was treated with LHW at 180 degrees C, the pellets deposited on the surface of solid residues were extracted gently with 1% sodium hydroxide (NaOH) solution. They were composed of 81.0% lignin, 7.0% glucan, and 3.2% xylan. The LHW pretreatment solution (PS) was sprayed to the filter paper, and the pellets were observed on its surface. Fourier transform infrared spectroscopy (FTIR) data showed that lignin was also the main component of the PS pellets. The effect of the pellets on enzymatic hydrolysis was chiefly attributed to the steric hindrance, not the cellulase adsorption. The structural characteristics of LHW-treated SCB might play a more important role in influencing the enzymatic hydrolysis than the pellets. (C) 2015 Elsevier Ltd. All rights reserved.
引用
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页码：7 / 12
页数：6
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