Abstract:
:We screened about a hundred microorganisms (including unidentified yeasts, fungi, and bacteria) for their ability to produce xylanolytic enzymes. About 40 of them were hemicellulolytic; among these, we selected Penicillium canescens 10-10c for detailed study because of its ability to produce an interesting enzymatic complex in quantity. The xylanase complex was cellulase-free, and had an optimal activity at pH 4.6-5.0 and 55-60 degrees C on birchwood xylan. The best production was on soya meal and wheat straw; expression of the xylanase was repressed by glucose, xylose, and lactose. The optimization of culture medium and mode (fed-batch) enabled us to improve the production three to four times. The importance of the mixing conditions on the biomass and xylanase production is also reported.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
Gaspar A,Cosson T,Roques C,Thonart Pdoi
10.1007/BF02787840subject
Has Abstractpub_date
1997-07-01 00:00:00pages
45-58issue
1-2eissn
0273-2289issn
1559-0291journal_volume
67pub_type
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