摘要:
A kojibiose phosphorylase which hydrolyzes kojibiose in the presence of an inorganic phosphoric acid to form D-glucose and .beta.-D-glucose-1-phosphoric acid, forms kojibiose and an inorganic phosphoric acid from .beta.-D-glucose-1-phosphoric acid, and catalyzes the transfer reaction of glucosyl group to other saccharides using .beta.-D-glucose-1-phosphoric acid as a saccharide donor. The enzyme is obtainable from natural sources such as microorganisms of the genus Thermoanaerobium, and obtainable by recombinant technology.
摘要:
A kojibiose phosphorylase which hydrolyzes kojibiose in the presence of an inorganic phosphoric acid to form D-glucose and &bgr;-D-glucose-1-phosphoric acid, forms kojibiose and an inorganic phosphoric acid from &bgr;-D-glucose-1-phosphoric acid, and catalyzes the transfer reaction of glucosyl group to other saccharides using &bgr;-D-glucose-1-phosphoric acid as a saccharide donor. The enzyme is obtainable from natural sources such as microorganisms of the genus Thermoanaerobium, and obtainable by recombinant technology. Kojibiose phosphorylase is used to transfer glucose from glucose-1-phosphate to acceptor saccharides to produce &agr;-D-glucosyl-1(1→5)-L-sorbose, kojibiosylglucose, kojibiosylglucoside and kojibiosylfructoside.
摘要:
A kojibiose phosphorylase which hydrolyzes kojibiose in the presence of an inorganic phosphoric acid to form .beta.-glucose and .beta.-D-glucose-1-phosphoric acid, forms kojibiose and an inorganic phosphoric acid from .beta.-D-glucose-1-phosphoric acid, and catalyzes the transfer reaction of glucosyl group to other saccharides using .beta.-D-glucose-1-phosphoric acid as a saccharide donor. The enzyme is obtainable from Thermoanaerobium brockii and obtainable by recombinant technology.
摘要:
A kojibiose phosphorylase which hydrolyzes kojibiose in the presence of an inorganic phosphoric acid to form D-glucose and .beta.-D-glucose-1-phosphoric acid, forms kojibiose and an inorganic phosphoric acid from .beta.-D-glucose-1-phosphoric acid, and catalyzes the transfer reaction of glucosyl group to other saccharides using .beta.-D-glucose-1-phosphoric acid as a saccharide donor. The enzyme is obtainable from natural sources such as microorganisms of the genus Thermoanaerobium, and obtainable by recombinant technology.
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:
.alpha.-Isomaltosyl .alpha.-isomaltoside represented by O-.alpha.-D-glucopyranosyl-(1.fwdarw.6)-.alpha.-D-glucopyranosyl O-.alpha.-D-glucopyranosyl-(1.fwdarw.6)-.alpha.-D-glucopyranoside is a novel non-reducing saccharide which promotes the growth of bifid bacteria, has an anti-caries activity, and promotes the mineral absorption. Similarly as the non-reducing saccharide, .alpha.-isomaltosyl .alpha.-glucoside and .alpha.-isomaltotriosyl .alpha.-glucoside can be also used to prevent caries and promote the growth of bifid bacteria and the mineral absorption. These saccharides can be used alone or in combination in a variety of foods, cosmetics and pharmaceuticals.
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 enzyme, which has a molecular weight of about 57,000-120,000 daltons on SDS-PAGE and a pI of about 3.8-5.1 on isoelectrophoresis using ampholyte, converts maltose into trehalose and vice versa. The enzyme was isolated from microorganisms of the genera Pimelobacter, Pseudomonas and Thermus. By using the enzyme, trehalose is readily formed from a commercially available maltose in an industrial scale and a relatively-low cost. Trehalose and saccharide compositions containing the same, which are preparable with the enzyme, are suitably used in food products, cosmetic compositions and pharmaceutical compositions.
摘要:
.alpha.-Isomaltosyl .alpha.-isomaltoside represented by O-.alpha.-D-glucopyranosyl -(1.fwdarw.6)-.alpha.-D-glucopyranosyl O-.alpha.-D-glucopyranosyl-(1.fwdarw.6) -.alpha.-D-glucopyranoside is a novel non-reducing saccharide which promotes the growth of bifid bacteria, has an anti-caries activity, and promotes the mineral absorption. Similarly as the non-reducing saccharide, .alpha.-isomaltosyl .alpha.-glucoside and .alpha.-isomaltotriosyl .alpha.-glucoside can be also used to prevent caries and promote the growth of bifid bacteria and the mineral absorption. These saccharides can be used alone or in combination in a variety of foods, cosmetics and pharmaceuticals.