Corn stover-enhanced cellulase production by Aspergillus niger NRRL 567

摘要

he production of extracellular cellulases by?Aspergilus niger?NRRL 567 on corn stover was studied in liquid state fermentation.?In this study, three cellulases, exoglucanase (EXG), endoglucanase (EG) and?b-glucosidase (BGL) were produced by?A. niger?NRRL 567. The optimal pH, temperature and incubation time for cellulases production was found to be 3.5, 30°C and 96 h, respectively. Maximal cellulases activities were achieved with 4% corn stover, 0.1% molasses and 1% yeast sludge. To?our?knowledge, this is the first report on production of cellulases by using corn stover as a substrate from?A. niger?NRRL 567.