[Objective] The aim was to lay the theoretical basis for the further development and utilization of cellulase.[Method] Selecting Aspergillus niger W1 with large diameter as original strain,the cellulase activity in different fermentation time of the mutant strain was detected after ultraviolet mutation.[Result] The lethality of A.nige W1 reached 92% through ultraviolet mutation for 10 min.During the 108 h detecting period,the enzyme activity of the original strain W1 and the screened high cellulase producin...
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