PURIFICATION AND CHARACTERIZATION OF ALKALINE PROTEASE FROM ASPERGILLUS NIGER ON SOLID STATE CULTUREP. MADHANRAJ, J. JUWANITHA JOEL, G. SENTHILKUMAR, M. PRABAKARAN, M. ANANTHI AND A. PANNEERSELVAMAbstract Alkaline proteases find the single largest applications among the industrial proteases as an active ingredient of laundry detergents, in tannery, food and chemical industry, medical foundations, recovery of silver from x-ray films, etc. The aim of this work was to isolate a high yielding, strain of protease and to standardize various parameters for the optimal production. In the present study Aspergillus niger was selected for the alkaline protease production in solid state fermentation. The enzyme production was maximum on wheat bran at 72 hrs with 65% moisture content. The wheat bran served as test substrate. The Solid State Fermentation Technology was found to be economically valuable to extend their application for industrial purposes specifically leather industry.
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