BIOETHANOL PRODUCTION FROM RICE BRAN BY SACCHAROMYCES CEREVISIAE

Cm·bohydrate biomass is considered as the future feedstock for bioethanol production because of its low cost and its huge availability. One of the major carbohydrate materials found in great quantities to be considered, especially in tropical countries, is rice bran. The effect of different pH and temperature with enzymatic saccharification treatment on conversion of rice bran was studied. The produced glucoce was fe1mented to bioethanol, using Saccharomyces cerevisiaeyeast and the ainount of produced bioethanol was measured by gas chromatography. Enzym treatment at 60°C and pH 5 is an effective treatmentmethod for conveliing rice bran to glucose. Up to 22.75% glucose v/v could be achieved after enzyme treatment. Fe1mentation of treated rice bran shown that glucose after 3 days fermentation the maximum bioethanol of 17.31% (v/v) wasattained. This process is expected to be useful for the bioethanol production from rice bran as a source of Cai·bohydrate renewable biomass from ablmdaiit agricultural by product

کلیدواژه ها:

Rice bran ، enzymatic hydrolysis ، fe1mentation ، bioethanol