Abstract：The production of alcohol and the alcohol tolerance were studied for the three preserved yeast strain, and one strain Saccharomyces cerevisiae SO2 was selected. Further researches were done to study the content of starch, liquefaction time, removing of oil, adding cellulose enzyme on the production of alcohol fermentation. Results showed that the optical fermentation conditions were: 22% corn powder, Liquefaction time 35 min, removing of oil and adding 0.5% of the cellulose enzyme. Finally a bilateral trail contrast with the traditional fermentation process for ethanol fermentation were conducted, the results showed that bilateral fermentation was better than traditional fermentation in the production of alcohol.
Keywords : Waste food；Ethanol；Fermentation conditions；Bilateral fermentation
