Effects of cellulase on the modification of cellulose

被引：111

作者：

Cao, Y ^{[1
]}

Tan, HM ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem Engn & Mat Sci, Beijing 100081, Peoples R China

来源：

CARBOHYDRATE RESEARCH | 2002年 / 337卷 / 14期

关键词：

cellulase; cellulose; hydrolysis; DP; alkaline solubility; supramolecular structures;

D O I：

10.1016/S0008-6215(02)00134-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Multicomponent cellulases, purified endoglucanases and cellobiohydrolases were assayed and shown to modify pure natural cellulose (softwood pulp). Changes in structure and properties of the cellulose caused by enzymatic treatment depend on the composition, the type of enzyme, and the treatment conditions. The reactivity of cellulose for some dissolving and derivatization processes may be improved by enzymatic hydrolysis. Endoglucanases decreased the average degrees of polymerization (DP) and improved the alkaline solubility of cellulose most efficiently. The variation in the supramolecular structure estimated from the infrared spectra of the cellulose samples was found to be correlated with the reactivity and might represent wide variations in conformation caused by the breakdown of the hydrogen bonds. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1291 / 1296

页数：6