Enzymatic hydrolysis of cellulose materials treated with ionic liquid [BMIM] Cl  

作　　者：LIU Liying CHEN Hongzhang 

机构地区：[1]State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Chinese Science Bulletin》2006年第20期2432-2436,共5页

摘　　要：A new cellulose solvent ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) was used to treat wheat straw and steam-exploded wheat straw (SEWS) in order to improve the enzymatic hy- drolysis rates, while the water was used as the con- trol. The enzymatic hydrolysis results showed that the hydrolysis rates of materials treated with [BMIM]Cl were improved. The hydrolysis rate of treated wheat straw could reach 70.37% and the SEWS could be completely hydrolyzed, while hydrolysis rates of the wheat straw and SEWS treated with water were 42.78% and 68.78% under the same conditions, re- spectively. The FTIR analysis and polymerization degree measurement indicated that the hydrolysis rates improvement was attributed to the decrease of the polymerization degrees of cellulose and hemi- cellulose, the absolute crystallinity degree of cellu- lose and the increase of its reaction accessibility.A new cellulose solvent ionic liquid 1-butyl-3-methylimidazolium chloride （[BMIM]Cl） was used to treat wheat straw and steam-exploded wheat straw （SEWS） in order to improve the enzymatic hydrolysis rates, while the water was used as the control. The enzymatic hydrolysis results showed that the hydrolysis rates of materials treated with [BMIM]Cl were improved. The hydrolysis rate of treated wheat straw could reach 70.37% and the SEWS could be completely hydrolyzed, while hydrolysis rates of the wheat straw and SEWS treated with water were 42.78% and 68.78% under the same conditions, respectively. The FTIR analysis and polymerization degree measurement indicated that the hydrolysis rates improvement was attributed to the decrease of the polymerization degrees of cellulose and hemicellulose, the absolute crystallinity degree of cellulose and the increase of its reaction accessibility.

关 键 词：纤维素材料 离子性液体 丁基氯化物 酶水解 FTIR 生化工程 

分 类 号：Q556[生物学—生物化学]