METHOD FOR PRODUCING SUGAR SOLUTION

WIPO Patent Application WO/2012/118171

A1

The purpose of the present invention is to provide a method for producing a sugar solution, said method comprising the following steps (1)-(3). Step (1): a step in which a filamentous fungus-derived cellulase is added to a pretreated cellulose material so as to obtain a hydrolysis product Step (2): a step in which blackstrap molasses is added to and mixed with the hydrolysis product so as to obtain a mixed sugar solution Step (3): a step in which the mixed sugar solution is subjected to solid-liquid separation and the obtained solution component is filtered by being passed through an ultrafiltration membrane so as to recover the filamentous fungus-derived cellulase as a non-permeated liquid and to obtain a sugar solution as a permeated liquid The enzyme recovery ratio of the filamentous fungus-derived cellulase from the cellulose hydrolysis product is improved by the present invention, so that the amount of cellulase used in the production process of a sugar solution can be reduced. In addition, a sugar component can be recovered not only from cellulose but also from blackstrap molasses in the present invention by adding blackstrap molasses to a cellulose hydrolysis product, thereby obtaining a mixed sugar solution.

KURIHARA HIROYUKI
YAMAMOTO YUKI
YAMADA KATSUSHIGE

PCT/JP2012/055323

September 07, 2012

March 02, 2012

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TORAY INDUSTRIES (JP)
KURIHARA HIROYUKI
YAMAMOTO YUKI
YAMADA KATSUSHIGE

C12P19/14; C12P1/02; C13K1/02

WO2010067785A1

2010-06-17

JP2006087319A	2006-04-06
JPS6387994A	1988-04-19
JP2008206484A	2008-09-11
JP2006087319A	2006-04-06
JPS6387994A	1988-04-19
JP2008206484A	2008-09-11
JP2008161125A	2008-07-17
JP2008535664A	2008-09-04

See also references of EP 2682472A4

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