文献类型：期刊文献

英文题名：Effect of [Emim]Ac pretreatment on the structure and enzymatic hydrolysis of sugarcane bagasse cellulose

作者：Bian, Jing[1] Peng, Feng[1,2] Peng, Xiao-Peng[3] Xiao, Xiao[4] Peng, Pai[2] Xu, Feng[1] Sun, Run-Cang[1,2]

第一作者：Bian, Jing

通信作者：Sun, RC[1]

机构：[1]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;[2]S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China;[3]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[4]Northwest A&F Univ, Coll Sci, Yangling 712100, Peoples R China

年份：2014

卷号：100

起止页码：211-217

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20150900579846);Scopus(收录号：2-s2.0-84887495915);WOS:【SCI-EXPANDED(收录号:WOS:000330092000027)】；

基金：The authors are grateful to grants from the Fundamental Research Funds for the Central Universities (BLYJ201215), Natural Science Foundation of China (No. 30930073), the Ministry of Science and Technology (973, 2010CB732204), and China Ministry of Education (No. 111).

语种：英文

外文关键词：Cellulose; Ionic liquid; Crystallinity; Enzymatic hydrolysis

摘要：Effect of ionic liquid pretreatment on enzymatic hydrolysis of cellulose was investigated in terms of the changes in the chemical and physical structure of the preparation. In this case, original cellulose isolated from sugarcane bagasse was subjected to ionic liquid ([Emim]Ac) dissolution at a mild temperature (90 degrees C) followed by regeneration in water and subsequently hydrolyzed by commercial cellulases. The original and regenerated cellulose were thoroughly characterized by XRD, FT-IR, CP/MAS C-13 NMR, and SEM. It was found that the original cellulose experienced an increase in glucose content from 80.0-83.3% to 91.6-92.8%, a decrease in the degree of polymerization from 974-1039 to 511-521, a crystal transformation from cellulose I to cellulose II, as well as an increase of surface area during the pretreatment. The results suggested that pretreatment led to effective disruption of cellulose for subsequent enzyme hydrolysis as evidenced by a high glucose conversion yield of 95.2%. (C) 2013 Elsevier Ltd. All rights reserved.