Saccharification reaction mixture, saccharification enzyme composition, sugar production method, and ethanol production method
AssigneeNissan Chemical Corporation
InventorsKazutoshi Odaka, Kazutoshi Sekiguchi
Life of this patent
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Abstract
A saccharification reaction mixture can saccharify at least one of cellulose and hemicellulose and contains at least one of cellulose and hemicellulose, a saccharification enzyme, silica or a silica-containing substance, and at least one compound (A) selected from the group consisting of a polyhydric alcohol compound represented by the following formula (1) or a derivative thereof and an acetylene glycol represented by formula (2) or an alkylene oxide adduct thereof.
Claims8
A saccharification reaction mixture, wherein the reaction mixture is capable of saccharifying at least one of cellulose and hemicellulose, the saccharification reaction mixture comprising
- at least one of cellulose and hemicellulose,
- a saccharification enzyme,
- silica or a silica-containing substance, wherein the silica is colloidal silica having a mean primary particle size of 1 nm to 400 nm, and the silica-containing substance is diatomaceous earth or silica sand, and
- at least one compound (A) selected from the group consisting of an acetylene glycol represented by formula (2):
- wherein each of R1, R2, R3, and R4 represents a saturated or unsaturated, linear or branched alkyl or alkenyl group, having a C1 to C10 main chain, the alkyl or alkenyl group having an optional substituent;
- each of A1 and A2 represents a linear or branched alkylene oxide group having a C2 to C4 main chain (wherein one end (oxygen atom) of the alkylene oxide group is bound to a hydrogen atom, and the other end (carbon atom) is bound to an oxygen atom);
- and the total number of addition of alkylene oxide units is 0 to 50, or an alkylene oxide adduct thereof;
- and
- wherein a ratio by mass of compound (A) to silica (compound (A)/silica) is 0.0001 to 1.
A saccharification enzyme composition, wherein the composition is capable of saccharifying at least one of cellulose and hemicellulose and the composition comprises
- a saccharification enzyme,
- silica or a silica-containing substance, wherein the silica is colloidal silica having a mean primary particle size of 1 nm to 400 nm, and the silica-containing substance is diatomaceous earth or silica sand, and
- at least one compound (A) selected from the group consisting of an acetylene glycol represented by formula (2):
- wherein each of R1, R2, R3, and R4 represents a saturated or unsaturated, linear or branched alkyl or alkenyl group, having a C1 to C10 main chain, the alkyl or alkenyl group having an optional substituent;
- each of A1 and A2 represents a linear or branched alkylene oxide group having a C2 to C4 main chain (wherein one end (oxygen atom) of the alkylene oxide group is bound to a hydrogen atom, and the other end (carbon atom) is bound to an oxygen atom);
- and the total number of addition of alkylene oxide units is 0 to 50, or an alkylene oxide adduct thereof, wherein the ratio by mass of compound (A) to silica or silica present in the silica-containing substance (compound (A)/silica) is 0.0001 to 1.
Dependencies are inferred from the claim text.