Optimization of growth and hydrolytic enzymes production by Fusarium culmorum using response surface method

Abstract

Production of hydrolytic enzymes by a phytopathogenic fungus Fusarium culmorum was investigated. The proteolytic activity was observed when the fungus was grown in the medium containing starch or soybean meal as a carbon source. The amylolytic and lipolytic activities were not found. Response surface modeling was applied to shake-flask culture of the fungus to determine the optimum concentration of carbon source and optimal culture time for growth and protease production. The results indicated that the maximum yield of protease production corresponded to the concentration of soybean meal of 1.4 g/ml and culture time of 4.5 days.

The fungus growth depends on the concentration of carbon source in the medium whereas the enzyme production was also influenced by the culture time and interaction between these two variables.