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65 results about "Riboflavin sodium phosphate" patented technology

Production technology for riboflavin sodium phosphate

The invention relates to a production technology for riboflavin sodium phosphate. The invention aims to realize simple technology, easy control and high yield. The production technology comprises the following steps: performing phosphorylation reaction: adding phosphorus oxychloride and acetonitrile in turn, dropwise adding pyridine of which the weight is 2/3 of the total weight, slowly dropwise adding a solution prepared from the residual pyridine and purified water and reacting for 30-60 minutes; adding vitamin B2 for performing phosphorylation reaction for 20-40 minutes under the temperature at 30-37 DEG C; while crystallizing, adding riboflavin cyclophosphate seed crystal of which the weight is 0.25-0.5% of the weight of the vitamin B2 for promoting the crystallization; performing hydrolysis reaction: adding 18%-20% hydrochloric acid solution into the separated riboflavin cyclophosphate crystal and performing hydrolysis reaction for 1-3 hours under the temperature at 45-55 DEG C; adding sodium hydroxide for performing neutral reaction and separating, thereby acquiring a riboflavin sodium phosphate crude product; washing with methyl alcohol and ethanol solution and removing the impurities and organic residual matters from the riboflavin sodium phosphate; drying and crushing to the required particle size.
Owner:山西集翔生物工程有限公司

Composite vitamin injection pharmaceutical composition containing 13 vitamins and preparation method thereof

The invention provides a composite vitamin injection pharmaceutical composition containing 13 vitamins and a preparation method thereof. The composition comprises 4 fat-soluble vitamins and 9 water-soluble vitamins, which are respectively placed in two ampoules, wherein the first ampoule contains vitamin A palmitate, vitamin K1, vitamin D3, vitamin E, vitamin C, vitamin B1, riboflavin sodium phosphate, dexpanthenol, vitamin B6, nicotinamide and a cosolvent, an antioxidant, and a pH adjusting agent; the second ampoule contains vitamin B12, folic acid, biotin, a stabilizing agent and a pH adjusting agent. The preparation method comprises that the preparation of the first ampoule comprises steps of oil-phase medicinal liquid preparation, water-phase medicinal liquid preparation, mixing, pH adjustment, filtration, filling, sterilization, and the like, and the preparation of the second ampoule comprises steps of medicinal liquid preparation, pH adjustment, active carbon adsorption, decarburization, filtration, filling, fusing sealing, sterilization and the like. According to the invention, the solubilizer, the antioxidant, and the preparation process of the composite vitamin injection pharmaceutical composition containing 13 vitamins are improved, and the composite vitamin injection pharmaceutical composition has the advantages of few using kinds of auxiliary materials, good stability, high clarity, high security, simple preparation method, and easy realization of industrialization.
Owner:LIAONING HAISCO PHARMACEUTICAL CO LTD

Preparation method of lithium iron phosphate/graphene composite material

The invention discloses a preparation method of a lithium iron phosphate/graphene composite material. The preparation method comprises the following steps of adding graphene and riboflavin sodium phosphate into a solvent; treating by ultrasonic waves, stirring, and uniformly dispersing; respectively dissolving a complexing agent, a lithium source compound and an iron salt compound into a solution, then sequentially adding into a graphene dispersing liquid, and reacting, so as to obtain the lithium iron phosphate/graphene composite material; uniformly mixing the obtained lithium iron phosphate/graphene composite material and a carbon source in a ball milling way, drying, and calcining for 3 to 24h at constant temperature of 600 to 850 DEG C under the inert gas protection atmosphere, so as to obtain the graphene-modified lithium iron phosphate/carbon composite material. The preparation method has the advantage that the riboflavin sodium phosphate is dispersed into the graphene to form a surfactant, and can also be used as a phosphor source in the generation process of the lithium iron phosphate. The prepared graphene-modified lithium iron phosphate/carbon composite material can be used as the cathode material of a lithium ion battery, so that the electrochemical properties, particularly the cyclic stability at high rate, of the battery can be obviously improved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1

Hydrophilicity modification method of hydroxyapatite single-crystal nanorod

The invention discloses a hydrophilicity modification method of a hydroxyapatite single-crystal nanorod. The hydrophilicity modification method comprises the following steps: firstly, synthesizing hydroxyapatite nanocrystalline with the surface modified by oleic acid; carrying out reflux reaction on the hydroxyapatite nanocrystalline with the surface modified by oleic acid and adenosine 5'-monophosphate sodium salt or riboflavin sodium phosphate, according to the mass ratio of 4: 1, in an acetone solvent for surface ligand exchange, so as to prepare a sample A; reacting the sample A with S-isocyanic acid-N-ethyl-N'-phenyl dithiocarbamate, so as to obtain a hydroxyapatite nanocrystalline sample B with the surface modified by a chain transfer agent; carrying out reversible addition-fragmentation chain transfer polymerization reaction on the sample B and a hydrophilic polymer. The hydrophilic nano-hydroxyapatite prepared through the method can be used in medicine carrying and substituting and cell imaging, can be used as an inorganic raw material for preparing degradable biomedical materials, such as artificial bones and bone cement, and has a good application prospect in relevant fields, such as biological materials and tissue engineering.
Owner:NORTHWEST UNIV

Seed treatment method for improving and enhancing vigor of sweet corn seeds and special compounding initiator for seed treatment method

The invention provides a seed treatment method for improving and enhancing the vigor of sweet corn seeds and a special compounding initiator for the seed treatment method. The compounding initiator is a mixture formed by a riboflavin sodium phosphate water solution with the concentration being 0.01% (w/v), a sodium succinate dibasic water solution with the concentration being 0.5 g/L and an acetylsalicylic acid water solution with the concentration being 0.5 mmol/L according to the volume ratio of 3-9:1:20-50. The seed treatment method for improving and enhancing the vigor of the sweet corn seeds through the compounding initiator is also within the protection range of the invention. The compounding initiator prepared from riboflavin sodium phosphate, sodium succinate dibasic and acetylsalicylic acid at different proportions is designed and combined with sand priming to treat and enhance the sweet corn seeds, several commonly-used vigor indexes are measured, and finally the formula of the compounding initiator capable of remarkably improving and enhancing the vigor of the sweet corn seeds is obtained. In addition, the high cost of riboflavin single dosage in the prior art can be greatly reduced through compounding of the three reagents, and certain universality is achieved.
Owner:BEIJING ZHONGNONGXINXING AGRI TECH CO LTD
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