Production of Protease from Rice Mill Wastes by Aspergillus niger in Solid State Fermentation
The production of enzymes by bioprocesses is a good value added to agro industry residues. A
comparative study was carried out on the production of protease using different varieties of Rice brokens
(PONNI, IR-20, CR-1009, ADT-36 and ADT-66) from Rice mill wastes as substrates in solid-state fermentation
(SSF) by Aspergillus niger. Among the all tested varieties of rice broken PONNI produced the highest activity
as 67.7 U/g while ADT-66 produced lowest protease as 44.7 U/g/ under solid state fermentation conditions.
The optimized conditions for producing maximum yield of protease were incubation at 35°C, 96 h and pH 7.0.
The protease production from waste treatment could be commercially used in detergents and leather industry.