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Extracellular ß‐galactosidase production during growth of filamentous fungi on polygalacturonic acid
Author(s) -
McKay A.M.
Publication year - 1991
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1991.tb00508.x
Subject(s) - lactose , extracellular , aspergillus oryzae , galactosidases , enzyme , biology , biochemistry , fungal growth , polysaccharide , microbiology and biotechnology , fungi imperfecti , extracellular polysaccharide , beta galactosidase , escherichia coli , gene
The ß‐galactosidase enzymes of Aspergillus oryzae and Scopulariopsis sp. are secreted during growth of the fungi on polygalacturonic acid, but not during growth on a wide range of other substrates, including lactose. The enzymes are thermotolerant with temperature optima in the range 55–65°C. The results indicate that fungal extracellular ß‐galactosidases are involved in fungal growth on complex polysaccharides but not on lactose.