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1. (WO2018133619) METHOD FOR PRODUCING SUGAR BY HYDROLYZING THICK MASH OF AGRICULTURAL AND FOREST BIOMASS RAW MATERIAL

Pub. No.:    WO/2018/133619    International Application No.:    PCT/CN2017/117785
Publication Date: Fri Jul 27 01:59:59 CEST 2018 International Filing Date: Fri Dec 22 00:59:59 CET 2017
IPC: C12P 19/14
C12P 7/10
Applicants: JIANGNAN UNIVERSITY
江南大学
Inventors: SUN, Fubao
孙付保
HONG, Jiapeng
洪嘉鹏
TANG, Song
唐松
ZHOU, Hao
周豪
Title: METHOD FOR PRODUCING SUGAR BY HYDROLYZING THICK MASH OF AGRICULTURAL AND FOREST BIOMASS RAW MATERIAL
Abstract:
Provided is a method for producing sugar by hydrolyzing a thick mash of an agricultural and forest biomass raw material, comprising the following steps: (1) subjecting a cellulosic raw material to a digestion treatment in a glycerol phase, wherein a glycerol crude cellulose and a glycerol treatment liquid are obtained after separation; (2) recycling the above-mentioned collected glycerol treatment liquid in the digestion treatment in step (1) 7 to 11 times; and (3) hydrolyzing, by means of cellulase, the glycerol crude cellulose obtained in step (2) to obtain a fermentable sugar. The glycerol phase digestion treatment refers to a digestion temperature of 230ºC-270ºC at a gauge pressure of 0-5 atm and maintaining the temperature for 10-30 minutes; or the acid addition amount of 0.01%-0.3% (w/v) solution volume, a digestion temperature of 160ºC-240ºC at a gauge pressure of 0-5 atm and maintaining the temperature for 10-30 minutes; or the alkali addition amount of 0.01%-0.3% (w/v) solution volume, a digestion temperature of 160ºC-240ºC at a gauge pressure of 0-5 atm and maintaining the temperature for 10-30 minutes.