Modification of high lignin content kraft pulps with laccase to improve paper strength properties. 1. Laccase treatment in the presence of gallic acid

被引：89

作者：

Chandra, RP ^{[1
]}

Lehtonen, LK ^{[1
]}

Ragauskas, AJ ^{[1
]}

机构：

[1] Inst Paper Sci & Technol, Atlanta, GA 30332 USA

来源：

BIOTECHNOLOGY PROGRESS | 2004年 / 20卷 / 01期

关键词：

D O I：

10.1021/bp0300366

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：

Laccase was reacted with gallic acid in the presence of a high-kappa (91) kraft pulp. The result was a modified pulp with 34%, 20%, and 72% improvements in burst, tensile, and wet tensile strength compared to untreated control samples. Fully bleached pulps were not responsive to the laccase treatment, indicating lignin was the major target for the fiber modification. The results indicate that the strength increases were a combined effect of improvements of hydrogen bonding between fibers and creation of phenoxy radical cross-links within the sheet.

引用

页码：255 / 261

页数：7

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