title: Influence of growth conditions on the production of xylanolytic enzymes by Aspergillus flavus.
abstract: Investigations were carried out to optimize the culture conditions for the production of xylanase and beta-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 beta-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.
authors.affiliation: Departamento de Bioquímica, Universidade Estadual de Maringá, PR, Brazil.
authors.forename: C G
authors.initials: CG
authors.lastname: de Souza
authors.forename: N S
authors.initials: NS
authors.lastname: Girardo
authors.forename: M A
authors.initials: MA
authors.lastname: Costa
authors.forename: R M
authors.initials: RM
authors.lastname: Peralta
mesh_terms: D001231:Aspergillus flavus / Q000201:enzymology* / Q000254:growth & development; D003470:Culture Media / Q000737:chemistry; D005656:Fungal Proteins / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D013696:Temperature; D013997:Time Factors; D043325:Xylan Endo-1,3-beta-Xylosidase; D014995:Xylosidases / Q000378:metabolism*
chemical_list: D003470:Culture Media; D005656:Fungal Proteins; D014995:Xylosidases; D043325:Xylan Endo-1,3-beta-Xylosidase; C026579:exo-1,4-beta-D-xylosidase