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  • Title: Production and properties of galactosidases from Corticium rolfsii.
    Author: Kaji A, Ichimi T.
    Journal: Appl Microbiol; 1969 Dec; 18(6):1036-40. PubMed ID: 5370656.
    Abstract:
    When Corticum rolfsii was grown in a medium containing bran extract under aerobic conditions, it secreted alpha-D-galactosidase and beta-D-galactosidase into the culture fluid. Pectin also stimulated the production of these enzymes, whereas galactose, glucose, and sucrose stimulated their production to a lesser degree. C. rolfsii produced greater amounts of both enzymes than Aspergillus niger. Both galactosidases in the culture medium hydrolyzed alpha- and beta-p-nitrophenyl-D-galactosides as well as lactose, stachyose, melibiose, and raffinose. Both exhibited optimal activity at pH 2 to 4 and were quite stable under acidic conditions. alpha-Galactosidase was separated from beta-galactosidase by column chromatography.
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