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Title:
PRETREATMENT OF CELLULOSIC MATERIAL FOR SACCHARIFICATION
Document Type and Number:
Japanese Patent JPS5898093
Kind Code:
A
Abstract:

PURPOSE: A pretreatment of a cellulosic material for enzymatic saccharification that consists of oxidation of the cellulosic material containing lignin with oxygen in an alkali medium, thus remarkably increasing the rate of enzymatic hydrolysis without substantial change in crystallinity of the cellulose.

CONSTITUTION: A cellulosic material containing lignin such as bagasse, rice plant straw, used paper, wood or the like is brought into contact with an aqueous alkali of 0.5W10% concentration and the resultant material wetted with the aqueous alkali is heated at a temperature lower than 160°C, preferably at 140W40°C under normal or elevated pressure up to 10kg/cm2G in an atmosphere of air or oxygen or dipped in an aqueous alkali of 0.5W10% concentration under blowing oxygen or air into the solution with heat.


Inventors:
HAYASHI JISUKE
Application Number:
JP19709481A
Publication Date:
June 10, 1983
Filing Date:
December 08, 1981
Export Citation:
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Assignee:
CHISSO CORP
International Classes:
C12N1/22; C12P19/14; D21C1/06; (IPC1-7): C12N1/22; C12P19/14
Attorney, Agent or Firm:
Yataro Sasai