METHODS FOR PRODUCING A REDUCED CELLULOSTIC MATERIAL IN A TANINE, TO SACIFY A CELLULOSTIC MATERIAL, AND TO PRODUCE A FERMENTATION PRODUCT.

摘要

The present invention relates to methods of producing a cellulosic material reduced in a tannin, comprising treating the cellulosic material with an effective amount of a tannase to reduce the inhibitory effect of the tannin on enzymatically saccharifying the cellulosic material. The present invention also relates to methods of saccharifying a cellulosic material, comprising: treating the cellulosic material with an effective amount of a tannase and an effective amount of a cellulolytic enzyme composition, wherein the treating of the cellulosic material with the tannase reduces the inhibitory effect of a tannin on enzymatically saccharifying the cellulosic material with the cellulolytic enzyme composition. The present invention also relates to methods of producing a fermentation product, comprising: (a) saccharifying a cellulosic material with an effective amount of a cellulolytic enzyme composition; (b) fermenting the saccharified cellulosic material of step (a) with one or more fermenting microorganisms to produce a fermentation product; and (c) recovering the fermentation product, wherein the cellulosic material is treated with an effective amount of a tannase to reduce the inhibitory effect of a tannin on enzymatically saccharifying the cellulosic material.