53 results about "Aldonic acid" patented technology

Compositions comprising oligosaccharide aldonic acids are useful for general care, as well as for treatment and prevention, of various cosmetic conditions and dermatological disorders, including those associated with intrinsic and / or extrinsic aging, as well as with changes or damage caused by extrinsic factors; general care, as well as treatment and prevention of diseases and conditions, of the oral, and vaginal mucosa; for general oral care, as well as treatment and prevention of oral and gum diseases; and for wound healing of the skin. Compositions comprising oligosaccharide aldonic acids may further comprise a cosmetic, pharmaceutical or other topical agent to enhance or create synergetic effects.

The present invention is an aqueous composition comprising at least one hydrophobic compound having at least one linkage of Formula I:—NHC(O)—X—  (I)wherein X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one —R1; —C(O)R1; —(CH2CH2O)n(CH(CH3)CH2O)mR2; —(CH2CH2O)n(CH(CH3)CH2O)mC(O)R1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; each R2 is independently —H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.

Compositions comprising oligosaccharide aldonic acids are useful for general care, as well as for treatment and prevention, of various cosmetic conditions and dermatological disorders, including those associated with intrinsic and / or extrinsic aging, as well as with changes or damage caused by extrinsic factors; general care, as well as treatment and prevention of diseases and conditions, of the oral, and vaginal mucosa; for general oral care, as well as treatment and prevention of oral and gum diseases; and for wound healing of the skin. Compositions comprising oligosaccharide aldonic acids may further comprise a cosmetic, pharmaceutical or other topical agent to enhance or create synergetic effects.

A polymer composition with (A) a first poly(meth)acrylate polymer or urethane polymer; and (B) a second poly(meth)acrylate polymer or urethane polymer which has a residue X incorporated therein, where X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one —R1; —C(O)R1; —(CH2CH2O)n(CH(CH3)CH2O)mR2; —(CH2CH2O)n(CH(CH3)CH2O)mC(O)R1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; and each R2 is independently —H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.

Disclosed is a method of making 5-formyl-2-furoic acid and furan-2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non-terrestrial sources like seaweeds. A preferred source is sugar beet pulp.

Disclosed is a method of making 5-formyl-2-furoic acid and furan-2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non-terrestrial sources like seaweeds. A preferred source is sugar beet pulp.

The invention relates to an improved process for the production of a sugar alcohol from the corresponding sugar through catalytic hydrogenation. Especially, the invention relates to a process for reducing the interference of sugar-derived aldonic acids in the hydrogenation process by adjusting the hydrogenation conditions so that the activity of the catalyst is maintained. In one embodiment of the invention, the process of the invention is carried out by adjusting the hydrogenation temperature by starting the hydrogenation at a lower temperature and then gradually rising the temperature to the final hydrogenation temperature. In another embodiment of the invention, the process of the invention is carried out by adding small-molecular monocarboxylic acids to the hydrogenation solution.

A polyguluronic acid ester having a chemical name of L-polyguluronic aldonic acid-2, 3-sulfuric acid, is prepared through the steps of first obtaining L-polyguluronic aldonic acid through acid degradation and pH grading of alginic acid, proceeding secondary acid degradation and pH grading, carrying out ultrafiltration, deposition, dewatering and drying, using sulfating agent to subject the polyguluronic acid ester to sulfation, alcohol deposition, scouring, alkaline treatment, filtering, drying and disintegrating. The polyguluronic acid ester according to the invention has strong negative ion concentration property, it can be utilized in the preparation of medicament for treating or preventing urinary lithiasis.

The invention relates to a method for the selective oxidation of a carbohydrate in the presence of a gold catalyst comprising gold particles distributed in a nanodispersed manner on a metal oxide support, and to a method for the selective oxidation of an oligosaccharide in the presence of a gold catalyst comprising gold particles distributed in a nanodispersed manner on a carbon or metal oxide support. The invention also relates to aldonic acid oxidation products produced using said method.

An ink for ink-jet recording which includes (a) a coloring material, (b) a liquid medium, (c) a compound selected from the group consisting of polyphosphoric acid, dicarboxylic acid, polyaminocarboxylic acid, aldonic acid, hydroxycarboxylic acid, polyolphosphate and salts thereof, and (d) an acid having an amino group and a sulfonic acid group in a molecule, or a salt thereof, the use of which reduces kogation of the ink-jet head heater having an outermost protecting layer containing at least one of a metal and a metal oxide.

A novel gluconate dehydratase derived from Achromobacter xylosoxidans and a gene encoding the gluconate dehydratase are provided. By reacting the gluconate dehydratase or a transformed cell containing the gene with an aldonic acid, the corresponding 2-keto-3-deoxyaldonic acid can be efficiently produced.

The present invention relates to a novel thermostable gluconate dehydratase from the thermoacidophilic archaeon Sulfolobus solfataricus, a coding sequence, and an expression system. The gluconate dehydratase has a molecular weight of about 320,000 to 380,000 daltons as the native protein, and about 40,000 to 50,000 daltons as the monomer protein, and catalyzes the dehydration reaction of aldonic acids to 2-keto-3-deoxy derivatives at temperatures of less than 120° C. The gluconate dehydratase can be produced from native or recombinant host cells and thereby used in the pharmaceutical, agricultural, and other industries.

The present invention is an aqueous composition comprising at least one hydrophobic compound having at least one linkage of Formula I:—NHC(O)—X—  (I)wherein X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one —R1; —C(O)R1; —(CH2CH2O)n(CH(CH3)CH2O)mR2; —(CH2CH2O)n(CH(CH3)CH2O)mC(O)R1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; each R2 is independently —H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.

The present invention is a method for imparting surface effects to a substrate using at least one hydrophobic compound with at least one linkage of Formula I:—NHC(O)—X—  (I)wherein X is the residue of a cyclic or acyclic sugar alcohol which is substituted with at least one —R1; —C(O)R1; —(CH2CH2O)n(CH(CH3)CH2O)mR2; —(CH2CH2O)n(CH(CH3)CH2O)mC(O)R1; or mixtures thereof; where the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each R1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; and each R2 is independently —H, a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond, or mixtures thereof.