An efficient process for lignin extraction and enzymatic hydrolysis of corn stalk by pyrrolidonium ionic liquids

文献类型： 外文期刊

第一作者： Ma, Hui-Hui

作者： Ma, Hui-Hui;Zhang, Peng;Li, Shuang;Hu, Xiao-Mei;Zhang, Bi-Xian;Gao, Yun-Fei

作者机构：

关键词： Ionic liquids;Corn stalk;Pretreatment;Pyrrolidonium

期刊名称：FUEL PROCESSING TECHNOLOGY （ 影响因子：7.033； 五年影响因子：5.806 ）

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收录情况： SCI

摘要： In recent years, lignocellulosic biomass has drawn increasingly attention as a platform for its transformation into biofuels. However, the complex structures of lignocelluloses limit their conversion into fermentable sugars or other valuable products. In this work, a series of pyrrolidonium-based ionic liquids with a simple synthetic procedure were investigated for the pretreatment of corn stalk at 90 degrees C for 30 min. Both ionic liquids alone and ionic liquids with deionized water were studied. Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy (SEM) analysis and nuclear magnetic resonance spectroscopy (NMR) analysis were employed to determine the chemical characteristics of regenerated lignin or cellulosic feedstock. A significant yield of lignin was achieved, as high as 19.07%, which accounted for 85.94% of the original lignin of corn stalk. A high yield of reducing sugar (91.81%) was obtained from regenerated cellulosic feedstock after enzymatic hydrolysis. High yields of glucose (79.63%) and cellobiose (13.66%) were observed as determined by high performance liquid chromatography (HPLC). (C) 2016 Elsevier B.V. All rights reserved.

分类号： TQ51

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