发明名称 |
Cellulase-free endo-xylanase enzyme of use in pulp delignification |
摘要 |
A method of treating lignocellulosic material with a cellulase-free endo-xylanase for delignification, brightening and viscosity improvement. The endo-xylanase is obtained by the overexpression of the xylanase gene using a cellulase-negative recombinant microorganism of the genus Streptomyces. The recombinant microorganism is produced in a homologous cloning system in which the xylanase gene is inserted into a vector plasmid to provide the hybrid plasmid that is introduced into a host cellulase-negative mutant strain and said xylanase gene, said vector plasmid and said host mutant strain are obtained from microorganisms of the genus Streptomyces.
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申请公布号 |
US5116746(A) |
申请公布日期 |
1992.05.26 |
申请号 |
US19910764083 |
申请日期 |
1991.09.23 |
申请人 |
INSTITUT ARMAND FRAPPIER |
发明人 |
BERNIER, ROGER L.;KLUEPFEL, DIETER;MOROSOLI, ROLF;SHARECK, FRANCOIS |
分类号 |
C12N9/24;C12N15/76;C12P19/14;D21C5/00 |
主分类号 |
C12N9/24 |
代理机构 |
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地址 |
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