Changes in the structural composition of hardwood kraft pulp during bleaching

被引：0
|
作者：
G. P. Aleksandrova
S. A. Medvedeva
A. P. Sinitsyn
O. N. Okunev
机构：
[1] Russian Academy of Sciences,Institute of Organic Chemistry, Siberian Division
[2] Moscow State University,Skrjabin Institute of Biochemistry and Physiology of Microorganisms
[3] Russian Academy of Sciences,undefined
来源：
Applied Biochemistry and Microbiology | 2000年 / 36卷
关键词：
Lignin; Apply Biochemistry; Enzymatic Preparation; Enzymatic Treatment; Xylanase Activity;
D O I：
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中图分类号：
学科分类号：
摘要：
The possibility of using xylanase preparations for hydrolyzing hemicelluloses in a non-bleached kraft pulp in order to facilitate its bleaching was studied. The effects of enzymatic preparations of fungal and bacterial origins were examined, and the optimal conditions for xylanase activity were determined. UV spectroscopy demonstrated that the treatment of kraft pulp with enzymatic preparations containing xylanase facilitated the subsequent removal of lignin and increased the brightness by 5%. The effect of enzymatic treatment was retained in the case of peroxide bleaching. The enzymatic preparations studied are promising for the development of chlorine-free pulp bleaching technologies.
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页码：245 / 249
页数：4
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