NGHIÊN CỨU SẢN XUẤT ETHANOL NHIÊN LIỆU TỪ HẠT CAO LƯƠNG NGỌT

The yeast cells Saccharomyces cerevisiae CNTP Y.7028 is used in the experiments for obtaining the fuel ethanol from grains of sweet sorghum. The parameters of starch hydrolysis process are: The ratio of starch to water is 30 percent; the pH value is 5,5; the concentration of Termamyl to the starch is 0,06%, the temperature of gelatinization is 95OC for 30 minutes. After that the temperature is reduced to 65OC and 0,5% AMG is added, saccharification time is 60 minutes. The fermentation of the obtained wort from sweet sorghum grains is made with rate of 0,25% Saccharomyces cerevisiae CNTP Y.7028; 0,05% MgSO4; 0,5% KH2PO4; 0,136% Ure. Fermentation time is 4 days. The concentration of ethanol in the fermented wort is 10,6%.