摘要:
Various processes for preparing aldaric acids, aldonic acids, uronic acids, and/or lactone(s) thereof are described. For example, processes for preparing a C 2 -C 7 aldaric acid and/or lactone(s) thereof by the catalytic oxidation of a C 2 -C 7 aldonic acid and/or lactone(s) thereof and/or a C 2 -C 7 aldose are described.
摘要:
The present invention describes methods for the diagnosis and differential diagnosis of the different forms of multiple sclerosis. The methods measure the intensities of specific small molecules called metabolites in samples from patients with clinically diagnosed relapsing-remitting or primary-progressive forms of multiple sclerosis and compare these intensities to the intensities observed in a population of healthy individuals, thus identifying markers of multiple sclerosis. A method is also provided for the differential diagnosis of subjects afflicted with relapsing-remitting multiple sclerosis from secondary-progressive multiple sclerosis.
摘要:
A process for producing a 1,2-diol through the reaction of an olefin with hydrogen peroxide. The process is highly efficient and highly selective and catalyst recovery and reuse are easy. It does not use any strong acid or strong base causative of apparatus corrosion. The process for producing a 1,2-diol is characterized by reacting an olefin with hydrogen peroxide in the presence of a polymer having a sulfo group.
摘要:
The invention relates to the creation of mechanically activated amorphous and amorphocrystalline compounds and compositions of a gluconic acid calcium salt, pharmaceutical preparations based thereon, a method for producing same and use for treatment of a wide range of diseases caused by disorders of calcium metabolism in an organism. A concept of the invention, as being claimed and as set forth in the application, consists in that the crystalline gluconic acid calcium salt or its compound with excipients is treated in grinding activator devices either up to the input specific energy value of not greater than 10.4 kJ/g and achieving an amorphocrystalline state or up to the input specific energy value of no less than 10.5 kJ/g and achieving an amorphous state. The obtainable agents are assessed by means of X-ray diffraction, IR, NMR, EPR spectroscopy, mass- or chromato-mass-spectrometry, and a differential thermal analysis. The mechanically activated amorphous and amorphocrystalline compounds and compositions are used as an active principle for preparing pharmaceutical preparations used for therapeutic, therapeutic-preventive and hygienic purposes. The pharmaceutical preparations comprising a therapeutically effective amount of active ingredient are used perorally 1-6 times daily, in dosages of 0.2-6 g, a course of at least 1 month. The invention can be used in medical and food industries in the production of biologically active agents, therapeutic-prophylactic means, medicinals and in practical medicine in treatment of acute osseous, dental and other diseases related to disorders of calcium metabolism in the organism.
摘要:
The present invention in a first aspect relates to novel flavour modulating substances according to formula (I) and/or formula (II) and/or edible salts thereof: R1-CR2(OR3)-CO-NR4-CHR5R6 (I) It was found that substances represented by formula (I) or formula (II) can advantageously be used to impart desirable flavour, especially taste attributes to foodstuffs, beverages, pharmaceutics, tobacco products and oral care products they are incorporated in. In addition said substances are capable of modulating and complementing the sensory impact of other, flavour imparting, substances. Thus, the present flavour modulating substances are advantageously applied in flavour compositions, foodstuffs, beverages, pharmaceutics and oral care products. Typical examples of flavour modulating substances according to the present invention include N-lactoyl glucosamine, N-lactoyl glucosaminic acid, N-gluconyl glucosamine, N- gluconyl glucosaminic acid, hemiacetals or lactones thereof, edible salts thereof and mixtures thereof.
摘要:
A process for recovering a desired organic acid from a solution includes the steps of: providing an aqueous solution including at least one desired organic acid or its acid anion; adjusting the proton concentration in the aqueous solution to a desired level, with the desired proton concentration being selected, at least in part, by the amount of available protons needed to associate with the acid anions of the desired organic acid(s) to be recovered and/or acid anions that are weaker than the desired organic acids; and recovering at least a portion of the at least one desired organic acid from the aqueous phase. The desired proton concentration can be based on the amount of available protons being greater than, less than or substantially equal, to the amount of protons needed to associate with the anion of the desired organic acid(s) and acid anions that are weaker than the desired organic acid(s). Specific examples of suitable organic acids include, but are not limited to, ascorbic, succinic, tartaric, glyconic, gulonic, citric, lactic, malic, maleic, acetic, formic, gluconic pyruvic, propionic, butyric, itaconic acids and mixtures thereof. One embodiment of the present invention relates to the recovery of 2-keto-L-gulonic acid (KLG) from aqueous solutions such as fermentation baths.
摘要:
The present invention relates to an improved process for producing hydroxy fatty acids preferably dihydroxy or polyhydroxy acids from unsaturated fatty acids derived from natural oils and fats. The unsaturated fatty acids extracted from natural vegetable oils or animal fats preferably palm-based oleic acid is hydroxylated or oxidized by peracetic acid which formed in situ from a mixture of hydrogen peroxide and formic acid. The process for producing dihydroxy or polyhydroxy fatty acids according to the present invention involve less cost, easier to perform and reduced reaction time. In addition, the dihydroxy or polyhydroxy acids produced according to the present invention is non irritant and suitable to be used in production of cosmetic products.
摘要:
An enzymatic system comprised of glucose oxidase and a catalase of the same or different sources to result in the complete conversion of glucose to gluconic acid at a glucose concentration greater than 25 % (w/w) ds. The resultant gluconic acid, which is essentially free from impurities normally associated with the fermentation process, is then spray granulated to produce a low-dust dry product.
摘要:
A process for producing a 1,2-diol through the reaction of an olefin with hydrogen peroxide. The process is highly efficient and highly selective and catalyst recovery and reuse are easy. It does not use any strong acid or strong base causative of apparatus corrosion. The process for producing a 1,2-diol is characterized by reacting an olefin with hydrogen peroxide in the presence of a polymer having a sulfo group.
摘要:
The present invention discloses a method for producing a pentitol. The present invention relates to a method for producing arabinitol from hexoses, e.g galactose and/or glucose, and/or fructose, or lactose hydrolysate, or invert sugar, or starch hydrolysates. The hexose is oxidatively decarboxylated to a C 5 -aldonic acid followed by catalytic hydrogenation yielding the desired arabinitol.