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
收藏
页码：345 / 351
页数：7
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