Device for producing sugar solution, fermentation system, method for producing sugar solution and fermentation method

摘要

A device (11A) for producing a sugar solution (22) derived from a carbohydrate-based starting material (21), said device comprising: a sugar solution preparation part (15A) for preparing the sugar solution (22) derived from the carbohydrate-based starting material (21); a cellulose-based biomass saccharification part (16) for saccharifying a hydrothermally treated biomass, which is obtained by hydrothermally decomposing a cellulose-based starting biomass material (35) containing a lignin component and a hemicellulose component, to give a dilute sugar solution (37); and a dilute sugar solution-supply pipe (L11) for supplying the dilute sugar solution (37), which is produced in the cellulose-based biomass saccharification part (16), to the sugar solution preparation part (15A). According to this constitution, the productivity of the sugar solution (22) can be improved and the production cost thereof can be reduced.