Application of crude xylanase from Bacillus licheniformis 77-2 to the bleaching of eucalyptus Kraft pulp

被引：0
|
作者：
V.B. Damiano
D.A. Bocchini
E. Gomes
R. Da Silva
机构：
[1] IBILCE,Laboratório de Bioquímica e Microbiologia Aplicada
[2] UNESP,undefined
来源：
World Journal of Microbiology and Biotechnology | 2003年 / 19卷
关键词：
biobleaching; Kraft pulp; xylanase;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Alkalophilic Bacillus licheniformis 77-2 produced an extracellular alkali-tolerant xylanase with negligible cellulase activity in medium containing corn straw. The effectiveness of crude xylanase on treatment of eucalyptus Kraft pulp was evaluated. A biobleaching experiment was carried out to compare the chlorine saving with pulp treated and untreated by the enzyme. Two-stage bleaching was employed, using a ClO2 chlorination and NaOH extraction (DE sequence). With the enzymatic treatment, in order to obtain the same value of Kappa number and brightness, respectively 28.5 and 30% less ClO2 was required in comparison to the enzymatically untreated samples.
引用
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页码：139 / 144
页数：5
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