Research on the Production of Fuel Ethanol by Simultaneous Saccharification and Fermentation of Rice Straw

The effects of different conditions including initial pH value of culture medium,fermentation time,fermentation temperature,and yeast inoculation quantity and Tween-80 on simultaneous saccharification and fermentation of rice straw to produce fuel ethanol were investigated.The results showed that yeast inoculation quantity could effectively increase ethanol yield in fermenting liquid.Under the optimum fermentation conditions(initial pH as 4.0～4.5,fermentation temperature at 32 ℃,and yeast inoculation quantity was 12 %,and fermentation time was 12～24 h),the produced ethanol content was 1.4 mg/mL and the conversion rate from rice straw to ethanol was 7.02 %.