The present work deals with the production of glucoamylase by Aspergillus niger, A. wentii, A. terreus, A. oryzae grown on
potato dextrose agar medium in Solid-State fermentation. Solid-State fermentation was carried out using groundnut oil cake, rice
bran, wheat bran and coconut oil cake which were purchased from the local market. During screening, it was found that wheat
bran using A.oryzae was more productive. The optimization of the culture medium was carried out and the maximum
glucoamylase activity 36.31 U/ml was obtained at optimum conditions of incubation time 5 days, temperature 35 °C, on wheat
bran substrate at a pH of 6.0, inoculum age of 5 day old culture and inoculum level of 15%.