Residual lignin studies of laccase-delignified kraft pulps

被引：72
|
作者：
Sealey, J [1 ]
Ragauskas, AJ [1 ]
机构：
[1] Inst Paper Sci & Technol, Atlanta, GA 30318 USA
来源：
ENZYME AND MICROBIAL TECHNOLOGY | 1998年 / 23卷 / 7-8期
关键词：
laccase; biobleaching; delignification; lignin;
D O I：
10.1016/S0141-0229(98)00056-8
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The delignification of chemical pulps with laccase and N-hydroxybenzotriazole was explored employing a pre- and post-O-2 delignified softwood draft pulp. The delignification properties of laccase were shown to be improved with N-hydroxybenzotriazole was used as a mediator instead of 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid). Analysis of the structure of residual lignin before and after laccase/N-hydroxybenzotriazole treatment indicated that the biobleaching system oxidizes the phenolic component of lignin and that the residual lignin is demethylated and significantly enriched in carboxylic acid groups. (C) 1998 Elsevier Science Inc.
引用
收藏
页码：422 / 426
页数：5
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