PROCESS FOR THE PRODUCTION OF CELLULOLYTIC AND HEMICELLULOLYTIC ENZYMES USING ETHANOLIC FERMENTATION DISTILLATION RESIDUES OF ENZYMATIC HYDROLYSATES OF (LIGNO-) CELLULOSIC MATERIALS

摘要

A process for producing cellulolytic and / or hemicellulolytic enzymes uses the residue of the ethanolic fermentation of enzymatic hydrolysates of cellulosic or lignocellulosic materials. This method can be integrated into a process for producing ethanol from cellulosic or lignocellulosic materials which comprises the following steps: 1) the chemical and / or physical pretreatment of a cellulosic or lignocellulosic substrate; 2) enzymatic hydrolysis of the pretreated substrate using cellulolytic and / or hemicellulolytic enzymes, 3) ethanol fermentation by an appropriate alcoholic microorganism of the hydrolyzate from step (2) and obtaining a fermentation must; and4) separating the alcoholic microorganism used in step (3), separating / purifying the ethanol and obtaining an aqueous phase constituting a residue; and wherein said residue is for producing the cellulolytic and / or hemicellulolytic enzymes used in step (2).