LOW SPORULATING ASPERGILLUS TUBINGENSIS VARIANT, PRODUCING METHOD OF SUGAR DEGRADING ENZYME USING THE VARIANT, AND PRODUCING METHOD OF BIOETHANOL

摘要

PROBLEM TO BE SOLVED: To provide a strain having high enzyme activity of -glucosidase, -xylosidase and the like, and low spore production; and to provide a producing method of bioethanol using the strain.SOLUTION: (1) The low spore Aspergillus tubingensis variant has saccharifying enzyme productivity. (2) In the producing method of bioethanol, a cellulose biomass and/or lignocellulose biomass is used as a substrate; the cellulose biomass and/or lignocellulose biomass is subjected to a saccharifying process with a product from an Aspergillus tubingensis variant; alcohol fermentation is carried out with ethanol fermentative bacteria; and ethanol is collected from the fermentation product.