Zeolite as source of saline nutrients in solid state fermentation of sugarcane straw bytrichoderma citrinoviride

Trichoderma citrinoviride, isolated from soil of Havana, Cuba, utilised sugarcane straw with high yields for cellulolytic enzyme in solid state fermentation. The solid bed containing natural zeolite supplies all mineral elements necessary for fungal growth and enzyme activity. Zeolite acted as a pump for nitrogen and mineral elements dosage and regulated pH of culture media at 5, optimal value for enzyme production.