Investigation of hydroxamic acids as laccase-mediators for pulp bleaching

被引：28

作者：

Geng, X

Li, K ^{[1
]}

Xu, F

机构：

[1] Oregon State Univ, Dept Wood Sci & Engn, Corvallis, OR 97331 USA

[2] Novozymes Biotech Inc, Davis, CA 95616 USA

来源：

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY | 2004年 / 64卷 / 04期

关键词：

D O I：

10.1007/s00253-003-1475-4

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：

A number of hydroxamic acids have been synthesized and investigated as laccase-mediators for pulp bleaching. As compared with N-hydroxyacetanilide (NHA), one of the most effective laccase-mediators reported so far, N-(4-cyanophenyl)acetohydroxamic acid (NCPA), resulted in the highest brightness and lowest kappa number of hardwood kraft pulp of all the laccase-mediators studied. The bleaching efficacy of a laccase/7-cyano-4-hydroxy-2H-1,4-benzoxazin-3-one system was also comparable with that of a laccase/NHA system. A laccase/NCPA system was further studied for the bleaching of unbleached softwood kraft pulp. The effects of pulp consistency, laccase dosage, NCPA dosage, incubation time, and oxygen pressure on the bleaching efficacy of a laccase/NCPA system were studied.

引用

页码：493 / 496

页数：4

共 15 条

[1]

AMANN M, 1997, INT S WOOD PULP CHEM, V9, P5

[2] ANALOGS OF THE CYCLIC HYDROXAMIC ACID 2,4-DIHYDROXY-7-METHOXY-2H-1,4-BENZOXAZIN-3-ONE - DECOMPOSITION TO BENZOXAZOLINONES AND REACTION WITH BETA-MERCAPTOETHANOL [J].