title: Secretion of cellulase and beta-glucosidase by Trichoderma viride ITCC-1433 in submerged culture on different substrates.
abstract: Trichoderma viride ITCC-1433 produces high yields of cellulase and especially beta-glucosidase when grown in submerged culture on different carbon sources. Cellulase synthesis was strongly repressed in the presence of glucose and only a low constitutive activity of beta-glucosidase and carboxymethylcellulase, but no Avicelase, could be demonstrated when culturing T. viride on glucose. With carboxymethylcellulose (CMC) as a substrate the secretion of enzyme as well as growth depended on the degree of substitution, but in general CMC cannot be regarded either as a powerful inducer or as a carbon source. With insoluble cellulose, maximum enzyme production and activities were obtained using an alkali-treated cellulose powder. On this substrate the excretion of soluble protein into the culture broth increased and the protein concentration corresponded to cellulolytic activities.
mesh_terms: D002480:Cellulase / Q000378:metabolism*; D002482:Cellulose / Q000378:metabolism; D003470:Culture Media; D005696:Galactosidases / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D008828:Microbiological Techniques; D003904:Mitosporic Fungi / Q000201:enzymology*; D014242:Trichoderma / Q000201:enzymology* / Q000378:metabolism; D001616:beta-Galactosidase / Q000378:metabolism*
chemical_list: D003470:Culture Media; D002482:Cellulose; D005696:Galactosidases; D001616:beta-Galactosidase; D002480:Cellulase; D005947:Glucose