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

被引：0
|
作者：
Andreas M. Madlala
Sadhvir Bissoon
Suren Singh
Lew Christov
机构：
[1] ML Sultan Technikon,Department of Biological Sciences
[2] P.O. Box,Sappi Biotechnology Laboratory, Department of Microbiology and Biochemistry
[3] University of the Orange Free State,undefined
[4] P.O. Box,undefined
[5] Sappi Management Services,undefined
[6] P.O. Box,undefined
来源：
Biotechnology Letters | 2001年 / 23卷
关键词：
biobleaching; brightness; chlorine dioxide; paper pulps; xylanase;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：345 / 351
页数：6
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