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1-Butyl-3-methylimidazolium chloride pretreatment of cotton stalk and structure characterization

文献类型： 外文期刊

作者： Xie, Wei 1 ; Zhou, Dayun 1 ; Ren, Yanjing 1 ; Tang, Shurong 1 ; Kuang, Meng 1 ; Du, Shuang-kui 1 ;

作者机构： 1.College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China

2.Institute of Cotton Research of Chinese Academy of Agricultural Sciences, State Key Laboratory of Cotton Biology, Anyang, 455000, Henan, China

关键词： Cotton stalk; [Bmim]Cl pretreatment; Enzymatic hydrolysis; Orthogonal design; Structural characterization

期刊名称：RENEWABLE ENERGY （ 影响因子：8.001； 五年影响因子：7.435 ）

ISSN： 0960-1481

年卷期： 2018 年 125 卷

页码：

收录情况： SCI

摘要： Cotton stalk was pretreated with 1-butyl-3-methyimidazolium chloride ([Bmim]Cl) and the effect of pretreatment factors, including liquid/solid ratio, temperature, and pretreatment duration on cotton stalk was investigated. Scanning electronic microscopy, Fourier transform infrared spectroscopy, and Xray diffraction were used to identify structural changes in native and pretreated biomass. The optimum pretreatment conditions were as follows: liquid/solid ratio of 10:1, reaction temperature of 120 degrees C and duration of 5 h. The reducing sugar yield was 29.72%, which was significantly higher than that of native cotton stalk. The differences in the reducing sugar yields between [Bmim]Cl-pretreated and untreated biomass suggested that [Bmim]Cl pretreatment was effective to produce reducing sugars. The pretreated cotton stalk showed clear pores and cracks, low crystallinity, and incomplete crystal structure compared with untreated one. [Bmim]Cl could be reused at least four times without significant reduction in the reducing sugar yield. (C) 2018 Elsevier Ltd. All rights reserved.

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