DEXTRAN-DEGRADING ENZYMES FROM MOLDS

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Abstract
Twenty strains of Penicillium lilacinum, P. funiculosum, P. verruculosum, and Spicaria violacea were found to produce potent extracellular dextran-degrading enzymes in submerged culture. An amylase concentrate of Asperpillus niger NRRL 330 was also found capable of degrading dextrans. Each organism displayed its own cultural requirements. The effect of pH on activity and stability of crude enzyme prepns. derived from certain strains of penicillia was studied. The dextranase produced by P. funiculosum NRRL 1768, when cultivated on one type of dextran, displayed varying degrees of activity toward dextrans of different microbial origin. The same was ture of the dextran-degrading ability of an amylase prepn. of A. niger NRRL 330.