Screening of cellulase-free fungal xylanases and evaluation of their performance on sulfite dissolving pulp

Cellulase-free xylanase preparations of different fungal origin lowered the xylan content of acid sulfite dissolving pulp from 5% (w/v) to less than 4%. This was not, though, related to the amount of reducing sugars released. The pulp bleachability improved in samples where xylan had been mostly deg...

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Bibliographic Details
Published inBiotechnology techniques Vol. 13; no. 5; pp. 313 - 316
Main Authors Christov, L.P, Szakacs, G, Rele, M.V, Balakrishnan, H
Format Journal Article
LanguageEnglish
Published London Chapman and Hall 01.05.1999
Subjects
biobleaching
Biological and medical sciences
Biotechnology
bleaching
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Other applications
sulfite pulping
wood pulp
xylan
Fungi
Screening
Enzyme
Bleaching
Glycosidases
Sulfite pulp
Paper pulp
Hydrolases
Xylan endo-1,3-β-xylosidase
O-Glycosidases
Thallophyta
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Summary:Cellulase-free xylanase preparations of different fungal origin lowered the xylan content of acid sulfite dissolving pulp from 5% (w/v) to less than 4%. This was not, though, related to the amount of reducing sugars released. The pulp bleachability improved in samples where xylan had been mostly degraded, however, the increment in brightness declined (from 2.0-2.9 to 1.0-1.2 brightness points) when the subsequent number of chemical bleaching steps increased from 1 to 5.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0951-208X
1573-6784
DOI:10.1023/A:1008932907596