51 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.

This invention relates to a process for the preparation of aldonic acids (in particular gluconic acid) by oxidation of aldoses with oxygen or with a gas containing oxygen, in the presence of supported bimetallic catalysts based on gold and platinum.

Processes for making lactones and dilactones from aldaric acids, aldonic acids, and their corresponding salts by dehydrative cyclization and azeotropic distillation. The processes can be carried out in the presence of water because water is removed by azeotropic distillation.

Aldaric acids, aldonic acids, and their corresponding salts are cyclized to the corresponding lactone or dilactone using gas sparging to remove water.

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.

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.

Novel, crosslinked polymers using biomass derived materials, such as aldaric acids and derivatives, are provided. The polymers can be used as hydrogels and in antimicrobial compositions.

A polysaccharide consisting glucose and aldonic acid but contains no protein and nucleic acid, whose molecular weight is 1.6X10#+[6]Da~2.6X10#+[6]Da, its terminal group carbons are of alpha-formation, the optical rotation [alpha]=+131.7 deg.-+159.4 deg., the basic matrix of the polysaccharide consists of glucose linked by 1-4 glycosidic bonds, each 17th glucose residue includes a side chain, which is a glucose molecule or an aldonic acid molecule, the proportion of glucose and aldonic acid is 2:1, they are all connected with the main chain glucose through 1-6 glycosidic bonds, the amount of glucose and aldonic acid in each mol of polysaccharide is 53:1. The polysaccharide YCP can be applied into the preparation of medicament for treating tumor. The invention also discloses the process of preparation.

The present invention relates to a method for the selective oxidation of a carbohydrate in the presence of a gold catalyst which includes nanodispersed gold particles on a metal oxide support, to a method for the selective oxidation of an oligosaccharide in the presence of a gold catalyst which comprises nanodispersed gold particles on a carbon or metal oxide support, and to the aldonic acid oxidation products prepared by use of these methods.

An ink for ink-jet recording which comprises (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/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.

The invention discloses an extracellular aldonic acid lactonase PoALAC. An amino acid sequence thereof is as shown in SEQ ID NO.1 and a nucleotide sequence thereof is as shown in SEQ ID NO.2. The invention also discloses an application of the extracellular aldonic acid lactonase PoALAC in synergic degradation of celluloses. The specific enzyme activity can reach up to 173009IU/mg. After the extracellular aldonic acid lactonase PoALAC is added into a cellulose system, the extracellular aldonic acid lactonase PoALAC has a synergic effect with polysaccharide monooxygenase and beta-glucosidase and the degrading effects for different pre-treated natural lignocellulose substrates are promoted, so that the extracellular aldonic acid lactonase PoALAC has huge application potential and economic benefit in the industries of biological energy source and bio-based chemicals.

Provided are an alkaline detergent composition excellent in cleaning, which allows steel sheets to be cleaned at low temperature and high speed, and a stable high-concentration alkaline detergent composition exhibiting fluidity. The composition according to the invention contains an alkaline agent and at least one polyoxyethylene alkyl ether, and/or at least one polyoxyalkylene ether. In addition, the compositions of the present invention contain, if desired, specific water-soluble macromolecular carboxylic and aldonic acids.

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.

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.

An agent for cleaning an RO membrane, which includes an aldonic acid and/or a salt of an aldonic acid, removes effectively foulants that cannot be sufficiently removed with conventional cleaning agents when an RO membrane used for water treatment. In a method for cleaning an RO membrane with the cleaning agent or the cleaning liquid, while the detachment and hydrolysis effects are achieved by performing cleaning under alkaline conditions, chelation of heavy metals is caused by the aldonic acid and/or the salt of an aldonic acid. When an anionic surfactant is used in combination with the aldonic acid and/or the salt of an aldonic acid, the anionic surfactant causes the detachment of foulants. When a polyol having a molecular weight of 1000 or less is used in combination with the aldonic acid and/or the salt of an aldonic acid, the polyol causes wetting and swelling of foulants.