FERMENTATION SYSTEM USING SUGAR SOLUTION AND FERMENTATION METHOD USING SUGAR SOLUTION

摘要

An alcohol production system for producing an alcohol through alcohol fermentation with the use of a sugar solution (11), said system comprising: an alcohol fermentation tank (12) wherein said sugar solution (11) is fermented by a yeast (13), which is added thereto, to give an alcohol as a starting material; and a means for adding a hydrothermally treated biomass whereby the hydrothermally treated biomass (20), which is obtained by hydrothermally treating a biomass material, is added to the alcohol fermentation tank (12). According to this system, the alcohol fermentation efficiency can be improved and the cost can be reduced without externally adding an inorganic salt alone.