Carbon sources influencing the production of cellulases and proteases by different cellulolytic microorganisms

ABSTRACT

Treated corn cobs cellulose [2%] was used as the only carbon source for the growth and production of extracellular cellulases and proteases by four cellulolytic microbes Penicillium funiculosum, Phanerochaete chrysosporium, Micromonospora calcea and Trichoderma virideTViride and Pfuniculosum showed a great ability for the production of carboxy-methyl cellulase [CMCase], filter paper-ase [FPA], neutral and acid proteasesMaximum neutral protease activity was obtained with MCalcea and TvirideOptimum activities in relation to the incubation periods varied according to the enzyme studied and the organism testedThe effect of different carbon sources on cellulases and proteases production indicates that cellulose and lactose were good inducers for CMCase production by Pfuniculosum and PhChrysosporium respectivelyThe latter inducers were also the best for the production of neutral proteases by Tviride and Mcalcea respectively, while cellobiose and lactose were the best inducers for acid protease production by PFuniculosum and Phchrysosporium, respectively