Abstract
An agar plate isolation technique was developed for screening the mutants of Aspergillus niger. Fungal growth in solid media containing carboxymethylcellulose(CMC) was selected within 2–3 days. The mutants selected by the new technique showed a remarkable enhancement of CMCase, FPase, β-glucosidase, xylanase, and β-xylosidase activities. These results clearly show that the new isolation technique is a practical method for the selection of better strains.
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