Study on the Conditions of Glucoamylase Production of the <i>Rhizopus oryzae </i>by Solid State Fermentation

The conditions of glucoamylase production of the Rhizopus oryzae in Luzhou-flavor DaQu by solid state fermentation were studied. According to the Box-Benhnken design, the conditiones of glucoamylase production of the Rhizopus oryzae were optimized by solid state fermentation. The results showed the optimum conditions of glucoamylase production of the Rhizopus oryzae in Luzhou-flavor DaQu by solid state fermentation were culture temperature 29°C, the water content in culture medium 53%, culture time 164h, glucoamylase activity was 2194.44U/g.