| 摘要 |
PROBLEM TO BE SOLVED: To efficiently suppress effect of bacteria, which exist in large amounts in kitchen waste derived from general waste, on simultaneous saccharification and fermentation reaction, to consequently improve ethanol yield in applying the kitchen waste existing in the general waste which is only incinerated conventionally to simultaneous saccharification and fermentation to achieve stable reaction, to further improve final ethanol concentration and reduce energy cost necessary for distillation, to reduce a ratio of a facility cost, and, as a result, to utilize organic resource, which is the kitchen waste existing in large amounts in the general waste, as raw material of bio-based fuel.SOLUTION: A method of suppressing bacteria proliferation is characterized by that an antibiotic is added to a simultaneous saccharification and fermentation reaction system in producing ethanol by heat-treating fermentation raw material formed of kitchen waste in general waste in a low-temperature range of 50-100°C, lowering a temperature of obtained heat treated product to a temperature range in which fermenting microorganisms can grow, and bringing the obtained treated material of which a temperature is lowered to the simultaneous saccharification and fermentation reaction system. |
