METHOD FOR PRODUCING A SUGAR SOLUTION

摘要

A method for producing a sugar liquid from cellulose-containing biomass, the method comprising the following steps (1) to (3):
step (1): the step of subjecting a cellulose-containing biomass to hydrothermal treatment and thereafter separating the treated cellulose-containing biomass into a hydrothermally-treated liquid and a cellulose-containing solid content;
step (2): the step of adding a filamentous fungus-derived cellulase to the cellulose-containing solid content obtained in the step (1) to hydrolyze the cellulose and thereafter separating the hydrolysate into a saccharification residue and a sugar liquid; and
step (3): the step of washing the saccharification residue obtained in the step (2) with the hydrothermally-treated liquid obtained in the step (1) to elute the filamentous fungus-derived cellulase adsorbed to the saccharification residue into the hydrothermally-treated liquid and thereafter obtaining a solution component comprising the filamentous fungus-derived cellulase by solid-liquid separation.