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Influence of growth conditions on the production of xylanolytic enzymes by Aspergillus flavus
Author(s) -
De Souza Cristina Giatti Marques,
Girardo Nélio Silva,
Costa Maria Aparecida Ferreira,
Peralta Rosane Marina
Publication year - 1999
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/(sici)1521-4028(199906)39:3<155::aid-jobm155>3.0.co;2-i
Subject(s) - xylanase , aspergillus flavus , food science , enzyme , xylan , fungus , chemistry , strain (injury) , microbiology and biotechnology , biochemistry , biology , botany , anatomy
Investigations were carried out to optimize the culture conditions for the production of xylanase and β ‐xylosidase by Aspergillus flavus , a filamentous fungus isolated from soil. The production of enzymes was tolerant to a wide range of initial culture pH values. Maximum xylanase (190 U/ml) and β ‐xylosidase (35 U/ml) production was obtained when the strain was grown on mineral medium supplemented with 3% (w/v) corn cob powder as the carbon source. The enzymes had optimal activities at pH values between 5.5 and 6.0 and exhibited high activity and stability under alkaline conditions.