Xylanase-induced reduction of chlorine dioxide consumption during elemental chlorine-free bleaching of different pulp types

被引：45

作者：

Madlala, AM

Bissoon, S

Singh, S

Christov, L

机构：

[1] Univ Orange Free State, Dept Microbiol & Biochem, Sappi Biotechnol Lab, ZA-9300 Bloemfontein, South Africa

[2] ML Sultan Technikon, Dept Biol Sci, ZA-4000 Durban, South Africa

[3] Sappi Management Serv, ZA-1560 Springs, South Africa

来源：

BIOTECHNOLOGY LETTERS | 2001年 / 23卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

biobleaching; brightness; chlorine dioxide; paper pulps; xylanase;

D O I：

10.1023/A:1005693205016

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 potential of crude xylanase from Thermomyces lanuginosus and Xylanase P (a commercial xylanase) was evaluated in bleaching of various paper pulp types. Xylanases released chromophores and reducing sugars and decreased kappa number of pulps. Chlorine-bleached, alkali-extracted bagasse and post-oxygen kraft pulps, pretreated with enzymes, gained over 5 brightness points over controls. Biobleaching of soda-aq pulp with Xylanase P produced chlorine dioxide savings of up to 30% or 4.5 kg chlorine dioxide t(-1) pulp.

引用

页码：345 / 351

页数：7