Sugar production process and ethanol production process

• Main Authors: FURUJYO, ATSUSHI, IGARASHI, YUKO, CHAO, YAPING, IWASAKI, YUJI, SUGIURA, JUN, SAKAINO, MAKOTO, ICHINOMIYA, MASAYUKI
• Format: Patent
• Language: English
• Published: 18.04.2013
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; DISPOSAL OF SOLID WASTE; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCESOR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- ORPOLYSACCHARIDES; SPIRITS; SUGAR INDUSTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VINEGAR; WINE

Disclosed is a pretreatment method which enables the promotion of the enzymatic glycosylation of lignocellulose under relatively mild conditions by using a tree bark as a raw material and a smaller energy.  Specifically disclosed is a process for producing a saccharide from a tree bark raw material, which is characterized by comprising the following steps: an alkali treatment step of immersing the tree bark raw material in an aqueous alkali compound solution; a cutting treatment step of cutting the alkali-treated tree bark mechanically into fine pieces; and an enzymatic glycosylation step of glycosylating the finely cut tree bark with an enzyme.  Also disclosed is a ethanol production process.