摘要:
The present invention has objects to provide a glucan useful as water-soluble dietary fiber, its preparation and uses. The present invention solves the above objects by providing a branched α-glucan, which is constructed by glucose molecules and characterized by methylation analysis as follows: (1) Ratio of 2,3,6-trimethyl-1,4,5-triacetyl-glucitol to 2,3,4-trimethyl-1,5,6-triacetyl-glucitol is in the range of 1:0.6 to 1:4; (2) Total content of 2,3,6-trimethyl-1,4,5-triacetyl-glucitol and 2,3,4-trimethyl-1,5,6-triacetyl-glucitol is 60% or higher in the partially methylated glucitol acetates; (3) Content of 2,4,6-trimethyl-1,3,5-triacetyl-glucitol is 0.5% or higher but less than 10% in the partially methylated glucitol acetates; and (4) Content of 2,4-dimethyl-1,3,5,6-tetraacetyl-glucitol is 0.5% or higher in the partially methylated glucitol acetates; a novel α-glucosyltransferase which forms the branched α-glucan, processes for producing them, and their uses.
摘要:
The present invention has objects to provide a glucan useful as water-soluble dietary fiber, its preparation and uses. The present invention solves the above objects by providing a branched α-glucan, which is constructed by glucose molecules and characterized by methylation analysis as follows: (1) Ratio of 2,3,6-trimethyl-1,4,5-triacetyl-glucitol to 2,3,4-trimethyl-1,5,6-triacetyl-glucitol is in the range of 1:0.6 to 1:4; (2) Total content of 2,3,6-trimethyl-1,4,5-triacetyl-glucitol and 2,3,4-trimethyl-1,5,6-triacetyl-glucitol is 60% or higher in the partially methylated glucitol acetates; (3) Content of 2,4,6-trimethyl-1,3,5-triacetyl-glucitol is 0.5% or higher but less than 10% in the partially methylated glucitol acetates; and (4) Content of 2,4-dimethyl-1,3,5,6-tetraacetyl-glucitol is 0.5% or higher in the partially methylated glucitol acetates; a novel α-glucosyltransferase which forms the branched α-glucan, processes for producing them, and their uses.
摘要:
The present invention has objects to provide a thermostable cellobiose 2-epimerase, its preparation and uses. The present invention attains the above objects by providing a thermostable cellobiose 2-epimerase, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, a process for producing the enzyme, and a process for producing isomerized saccharides using the enzyme.
摘要:
The present invention has objects to provide a thermostable cellobiose 2-epimerase, its preparation and uses. The present invention attains the above objects by providing a thermostable cellobiose 2-epimerase, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, a process for producing the enzyme, and a process for producing isomerized saccharides using the enzyme.
摘要:
The present invention has objects to provide a thermostable cellobiose 2-epimerase, its preparation and uses. The present invention attains the above objects by providing a thermostable cellobiose 2-epimerase, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, a process for producing the enzyme, and a process for producing isomerized saccharides using the enzyme.
摘要:
An object of the present invention is to provide an immunomodulating agent in gut that can be ingested continuously in daily diet without adverse side effect. The object is attained by providing an immunomodulating agent in gut comprising a cyclic tetrasaccharide as an effective ingredient.
摘要:
An object of the present invention is to provide a novel starchy substance having a retrogradation-resistance, a process for producing the starchy substance efficiently from a material starch by enzymatic reaction, and uses thereof. The present invention attains the above object by providing branched starch having 6-α-maltosyl- and/or 6-α-maltotetraosyl-structure(s) with a marked retrogradation-resistance, a process for producing the branched starch without lowering the molecular weight of material starch, and uses thereof.
摘要:
An object of the present invention is to provide a novel starchy substance having a retrogradation-resistance, a process for producing the starchy substance efficiently from a material starch by enzymatic reaction, and uses thereof. The present invention attains the above object by providing branched starch having 6-α-maltosyl- and/or 6-α-maltotetraosyl-structure(s) with a marked retrogradation-resistance, a process for producing the branched starch without lowering the molecular weight of material starch, and uses thereof.
摘要:
An object of the present invention is to provide an immunomodulating agent in gut that can be ingested continuously in daily diet without adverse side effect. The object is attained by providing an immunomodulating agent in gut comprising a cyclic tetrasaccharide as an effective ingredient.
摘要:
A saccharide composition containing trehalulose, which is obtainable by allowing a maltose/trehalose converting enzyme to act on a sucrose solution to produce trehalulose, and collecting the resulting trehalulose-containing mixture. Since the enzyme converts sucrose into trehalulose in a relatively high yield and the conversion rate is controllable, a saccharide composition rich in trehalulose is readily obtained on an industrial scale.