37 results about "Vitamin C-palmitate" patented technology

The invention discloses a stable method for microencapsulating carotenoid. The method comprises 1) a step of completely dissolving a protecting colloid, sucrose or glucose, ascorbyl palmitate and EDTA into water, and adjusting pH to 10-11 to obtain a water phase A; 2) a step of completely dissolving carotenoid and an antioxidant into a solvent to obtain an oil phase B; 3) a step of adding the oil phase B into the water phase A under a condition of high-speed shearing and high-speed stirring; emulsifying the mixture to form an initial emulsion by stirring at a high speed; and heating and removing the solvent to obtain a microemulsion; and 4) a step of adding the obtained microemulsion into a spray drying system; and obtaining carotenoid particles or powder after spray drying. The carotenoid particles or powder prepared by the method have advantages of good dispersibility, high stability, good light permeability and small particle sizes.

The invention discloses a good microencapsulation method for carotenoid. The method comprises the following steps of: 1) fully dissolving protective colloid, sucrose or glucose, vitamin C palmitate, ethylene diamine tetraacetic acid (EDTA) and tea saponin in water, and adjusting the pH to be 10 to 11 to obtain a water phase A; 2) fully dissolving the carotenoid and an antioxidants in a solvent to obtain an oil phase B; 3) under high-shear and high-agitation conditions, adding the oil phase B into the water phase A, emulsifying to form colostrum by stirring at a high speed, heating and removing the solvent to obtain a microemulsion; and 4) adding the obtained microemulsion into a spray drying system to obtain carotenoid particles or powder after spray drying. The carotenoid particles or powder prepared by the method has the characteristics of high dispersibility, high stability, high light permeability and small particle size, and meanwhile has the characteristics that the embedding rate is high and the washout content is less than 1 percent.

The invention discloses high-stability algae oil DHA microcapsule powder and a preparation method thereof. The high-stability algae oil DHA microcapsule powder is prepared from algae oil DHA, a wall material, antioxidants and the like, wherein the wall material is prepared from 60-80 mass percent of maltodextrin, 10-30 mass percent of modified starch and 6-10 mass percent of glucose power, and the amount of the wall material accounts for 70-90 percent of the mass of the algae oil DHA microcapsule powder; and the antioxidants refer to 20-40 mass percent of vitamin E, 20-40 mass percent of vitamin C palmitate and 20-40 mass percent of citric acid, and the amount of the antioxidants is 0.2-0.3 percent of the algae oil DHA. The invention also discloses a method for preparing the algae oil DHA microcapsule powder. The algae oil DHA microcapsule powder produced by the invention is low in surface oil content and does not have DHA oxidation fishy smell, oxidation of the algae oil DHA is effectively delayed, the stability of the product is improved, and the shelf life is prolonged.

The invention relates yogurt containing fish oil, prepared by coupling low fat milk with white sugar, stabilizer, whey protein concentrate, fish oil, vitamin C palmitate, vitamin E and lecithin and carrying out strain fermentation. The yogurt containing fish oil comprises 700-900 kg of low fat milk, 50-90 kg of white sugar, 3-10 kg of stabilizer, 3-15 kg of whey protein concentrate, 0.1-5 kg of fish oil, 0.01-1 kg of vitamin C palmitate, 0.001-0.05 kg of vitamin E, 0.1-0.5 kg of lecithin, and 200-250 DCU of strains. The yogurt product containing fish oil of the present invention not only contains the ingredient of fish oil to generate the effect of reducing blood lipid, but also contains a plurality of nutritional ingredients from whey protein concentrate, vitamin C palmitate, vitamin E and lecithin etc., above all, because an antioxidation system and a stabilizer system are formed in the yogurt, the oil instability and the influence on the yogurt taste caused by adding fish oil are solved. Thereby the yogurt product containing fish oil of the present invention has the effect of reducing blood lipid and simultaneously has the taste and stability of common yogurt.

The invention discloses a composition and a healthcare product assisting in regulation of blood fat and applications thereof, and relates to a composition mainly originated from bamboo leaves, semen cassiae and grapefruit, a healthcare food and applications thereof. The invention aims to provide a composition and a healthcare product assisting in regulation of blood fat. The composition assistingin regulation of blood fat disclosed by the invention comprises the following components in parts by mass: 15-40 parts of bamboo leave flavone, 5-10 parts of semen cassiae extract, 8-20 parts of freeze-dried powder of grapefruit juice and 2-5 parts of vitamin C palmitate, wherein the bamboo leave flavone comprises the following components in percentage by mass: 24.0-27.0% of total flavone, 20.0-30.0% of phenolic acid and the balance of impurities; and the semen cassiae extract comprises the following components in percentage by mass: 4.0-5.0% of total flavone, 0.8-3.0% of total anthracene quinine and the balance of impurities.

The invention provides a stable fat-soluble active component composition, and a microcapsule, a preparation method and applications thereof, wherein the fat-soluble active component composition comprises tocopherol, vitamin C palmitate and a fat-soluble active component, a weight ratio of the tocopherol to the vitamin C palmitate is 2-8:1, and a weight ratio of the combination of the tocopherol and the vitamin C palmitate to the fat-soluble active component is 7-13:100. According to the present invention, the novel antioxidant combination with no contraindication is obtained by screening the combination of the antioxidant and adjusting the ratio and the dose so as to improve the stability of the fat-soluble active component.

The invention relates to an additive for preserving fish oil, in particular to an antioxidative composition for fish oil. The antioxidative composition is prepared by mixing vitamin C palmitate, natural vitamin E, rosemary, raw ginger oil and oyster shell powder. The antioxidative composition comprises 30 to 50 weight percent of vitamin C palmitate, 20 to 40 weight percent of natural vitamin E, 5to 10 weight percent of rosemary, 3 to 10 weight percent of raw ginger oil, and 5 to 15 weight percent of oyster shell powder. The total weight percentage of the composition is 100 percent. The addedamount of the antioxidative composition in the fish oil is 0.005 to 0.2 percent based on the weight of the fish oil. The components of the composition are used in combination to produce a synergetic effect, so that the composition has a continuous excellent antioxidative effect. Meanwhile, the component materials are natural ingredients, so the composition is safe and free from toxic and side effects and is a nutritional antioxidative composition which has a high value for human bodies.

The present invention provides a stable fat-soluble active ingredient composition, microcapsule and process for preparation and use thereof. The fat-soluble active ingredient composition comprises tocopherol, vitamin C palmitate and a fat-soluble active ingredient; wherein the weight ratio of tocopherol to vitamin C palmitate is 2-8:1, the weight ratio of a combination of tocopherol with vitamin C palmitate to the fat-soluble active ingredient is 7-13:100. The present invention obtains a novel antioxidant composition without hidden dangers for improving the stability of the fat-soluble active ingredient by screening a combination of antioxidants and adjusting their proportion and dose.

The invention discloses a cosmetic which comprises the following components in percentage by weight: 20-35% of dendrobium polysaccharides, 10-15% of glycerinum, 0-2 of ceramide, 42-65% of ultrapure water, 0.3-1% of dendrobine ethosomes, 0-2% of natural vitamin E, 0-1% of trans-resveratrol, 0-1% of vitamin C palmitate, 0-1% of alpha-arbutin and 0.1-1% of plant essential oil. The invention further provides a preparation method of the dendrobium polysaccharides and the dendrobine ethosomes in the cosmetic. The invention solves the technical problem of 'providing a cosmetic with dendrobium extracts (the dendrobium polysaccharides and the dendrobine ethosomes)', and the cosmetic disclosed by the invention has effects of ultraviolet resistance and oxidation resistance, meanwhile has effects of whitening skin and lightening stain, and moreover is purely natural and free of irritation.

The invention relates to a method for separating and purifying vitamin C palmitate from reaction liquid of a direct esterification method, and the method applied to separation and purification fields of the reaction liquid. The separating and purifying method comprises the following steps of: reacting vitamin C with palmitic acid under catalysis of concentrated sulfuric acid, so as to obtain the reaction liquid of the vitamin C palmitate; slowly pouring the reaction liquid into ice-bath cooling water or trash ice, adding methylbenzene to carry out extraction, and carrying out standing and layering to separate out a lower-layer waste acid layer and leave a methylbenzene layer; adding water into the methylbenzene layer, carrying out crystallization and filtering so as to obtain a filter cake, and respectively washing the filter cake by utilizing proper amount of methylbenzene and water; adding the filter cake into the water and stirring for 0.5-3 hours, filtering, and carrying out water washing until the pH of the effluent water is 6-7, so as to obtain crude products of the vitamin C palmitate; and carrying out recrystallization on the crude products of the vitamin C palmitate by utilizing ethanol so as to obtain finished products of the vitamin C palmitate. The method for separating and purifying the vitamin C palmitate from the reaction liquid of the direct esterification method has the advantages that solvents are simply separated and purified, are low in toxin and can be recycled, the separation and purification cost is low, the product purity is high, the condition is mild and the operation is simple and convenient.

The invention discloses a composition and a healthcare product assisting in regulation of blood fat and applications thereof, and relates to a composition mainly originated from bamboo leaves, semen cassiae and grapefruit, a healthcare food and applications thereof. The invention aims to provide a composition and a healthcare product assisting in regulation of blood fat. The composition assistingin regulation of blood fat disclosed by the invention comprises the following components in parts by mass: 15-40 parts of bamboo leave flavone, 5-10 parts of semen cassiae extract, 8-20 parts of freeze-dried powder of grapefruit juice and 2-5 parts of vitamin C palmitate, wherein the bamboo leave flavone comprises the following components in percentage by mass: 24.0-27.0% of total flavone, 20.0-30.0% of phenolic acid and the balance of impurities; and the semen cassiae extract comprises the following components in percentage by mass: 4.0-5.0% of total flavone, 0.8-3.0% of total anthracene quinine and the balance of impurities.

The invention relates to the technical field of production of vitamin C palmitate, and more specifically discloses a preparation method of vitamin C palmitate. Using vitamin C and palmitic acid as raw materials, using concentrated sulfuric acid as a catalyst and solvent, and using cyclohexyl alcohol or citric acid as an antioxidant, the crude ester of vitamin C palmitic acid is synthesized by direct esterification, and the crude ester is further washed and separated, Crystallization and recrystallization. The method has few reaction steps, few types of solvents, fast extraction and separation, low toxicity, recyclable solvents for repeated application, low cost, simple operation and easy industrial production.

The invention provides preparation of a novel ascorbyl palmitate (AP) based multifunctional nanometer drug carrier (APNPs) and a taxol type lipid nanoparticle (X-APNPs) and applications of the carrier and the nanoparticle in the antitumor field. In a preparing process of the APNPs, no auxiliary material is introduced, and the AP is self-assemblied to form the stable lipid nanoparticle by utilizing the amphiphilic structure of the AP and through a physical means. The prepared novel multifunctional APNPs can increase solubility and stability of an insoluble taxol type medicine, increases bioavailability of the medicine, and can be adopted as an antioxidant and a chemotherapeutic drug to prevent oxidation of the medicine and to prevent and treat tumor. The prepared X-APNPs nanoparticle reduces side and toxic effects of the taxol type medicine, and increases solubility and bioavailability of the taxol type medicine. The taxol type medicine X and the AP have synergistic antitumor curative effects.

The invention provides a tobacco product containing vitamin C compound and application thereof, i.e. a tobacco product, wherein the tobacco product contains a special tobacco additive, which comprises the vitamin C compound. On the other hand, the invention relates to the application of the vitamin C compound in the tobacco product. The tobacco product containing the vitamin C compound contains the tobacco additive, which comprises the vitamin C compound, the vitamin C compound mainly comprises vitamin C, vitamin C ester and salt thereof, preferably vitamin C palmitate, wherein the content of the added vitamin C compound is 0.01 to 10 percent by weight on the basis of the dry weight of the tobacco product, and preferably, the content of the vitamin C compound is 0. 1 to 1 percent. The mainstream smoke of the tobacco product provided by the invention can provide more vitamin C, produce less free radicals and help the bodies of smokers to recover the content of vitamin C, and also can reduce the irritating taste of cigarettes and get rid of the intense cigarette smell on the bodies of smokers.

The invention discloses natural herb whitening face cream. Raw materials in a formula of the face cream according to a weight ratio are respectively 2 parts of cetanol, 8 parts of white mineral oil, 5 parts of isopropyl palmitate, 4 parts of squalane, 1 part of vitamin C palmitate, 1 part of nicotinamide, 0.3 part of xanthan gum, 0.2 part of sodium ethylene diamine tetracetate, 4 parts of glycerinum, 5 parts of propylene glycol, 1 part of licorice extract, 2 parts of tricholoma matsutake extract, a proper amount of essence, a proper amount of corrosion remover and deionized water with the amount that the added deionized water and all the other raw materials are 100 parts. According to the natural herb whitening face cream, the use amount and physicochemical properties of the raw materials generate a synergistic effect, thus achieving the effects of naturally whitening and inhibiting melanogenesis; the PH value of the natural herb whitening face cream is close to that of human skin, and irritation to the skin is avoided; after using the face cream, a user can obviously feel comfortable and soft without grease sense, and obvious effects of moistening and nourishing the skin, and whitening and beautifying are achieved.

The invention discloses an anti-wrinkle eye mask and a preparation process thereof. The novel anti-wrinkle eye mask is prepared by taking a novel elastomer material styrene-isoprene-styrene (SIS) as the main substrate material of an externally applied cosmetic patch and taking vitamin A palmitate, vitamin C palmitate and vitamine E acetate as main functional elements by using an online low-temperature melting forming process. The product disclosed by the invention can reduce wrinkles at the canthus and has the obvious functions of smoothing wrinkles and moistening for a long time; meanwhile, the substrate material and the technology disclosed by the invention can be applied to preparation of various externally applied cosmetic patches of liposoluble ingredients.

The invention provides a facial cleanser, and belongs to the technical field of cosmetics. The facial cleanser is made by mixing 8 parts of tween 80, 0.5 part of sapindoside, 8 parts of oat polypeptide, 5 parts of titanium dioxide, 1 part of magnesium aluminum silicate, 8 parts of a surfactant, 20 parts of glycerin, 6 parts of Xiuyan jade powder, 15 parts of vitamin C palmitate, 2 parts of 1, 3-propanediol, and 2 parts of carbomer with 50 parts of deionized water. The provided facial cleanser is good in facial cleaning effect, is non-irritant to the skin, can squeeze grease, such as fat granules, on the surface of the skin after application, and doesn't damage the skin.

The invention discloses a high-strength polyethylene cable jacket material and a preparation method thereof. The high-strength polyethylene cable jacket material is prepared from the following raw materials in parts by weight: 34-52 parts of linear low-density polyethylene, 22-36 parts of polytrimethylene terephthalate, 16-28 parts of polytrifluorochloroethylene, 2-3 parts of 2-cadmium ethylhexoate, 5-10 parts of dipropylene glycol dibenzoate, 15-20 parts of hydrated magnesium silicate superfine powder, 1-2 parts of 3, 5-tert-butyl-4-hydroxy benzoic acid hexadecyl ester, 10-15 parts of pentaerythritol tetra benzoate, 2-3 parts of barium laurate, 4-8 parts of tributyrin, 10-15 parts of potassium titanate whisker, 2-3 parts of 1, 4-dithiothreitol, 1.5-2.5 parts of vitamin C palmitate, 3-5 parts of butyl methoxy dibenzoyl methane, 13-19 parts of fire retardant, 10-15 parts of zirconium dioxide and 1-2 parts of 1,1'sulfo-dis(2-naphthol). The jacket material disclosed by the invention is good in mechanical properties, high in tensile strength, large in elongation at break, tear resistant, abrasion resistant and good in fatigue resistance, temperature tolerance, aging resistance and corrosion resistance, and the jacket material can be used for greatly prolonging the service life of the cable.

The invention discloses a special anti-stress enhancer for black sea bream and an application thereof. The invention is characterized in that the special anti-stress enhancer is composed of the following raw materials (by weight): 20-35 parts of angelica sulphated polysaccharide, 7-20 parts of vitamin C palmitate, 10-25 parts of total flavonoids of semen ziziphi spinosae, 15-25 parts of a rhizoma acori graminei extract, 5-15 parts of chromium baicalein and 3-10 parts of gamma-schizandrin. The immunoenhancer accounts for 1-2% of mass of a feed for black sea bream. The product of the invention has the following advantages: stress reaction can be relived, anti-stress capability is raised, and immunity is boosted. The anti-stress enhancer just accounts for 1-2% of mass of the feed, but average final weight of black sea bream can be raised by 20.1-48.8% and survival rate is enhanced by 11.67-25.83%.

The invention discloses high-stability algae oil DHA microcapsule powder and a preparation method thereof. The high-stability algae oil DHA microcapsule powder is prepared from algae oil DHA, a wall material, antioxidants and the like, wherein the wall material is prepared from 60-80 mass percent of maltodextrin, 10-30 mass percent of modified starch and 6-10 mass percent of glucose power, and the amount of the wall material accounts for 70-90 percent of the mass of the algae oil DHA microcapsule powder; and the antioxidants refer to 20-40 mass percent of vitamin E, 20-40 mass percent of vitamin C palmitate and 20-40 mass percent of citric acid, and the amount of the antioxidants is 0.2-0.3 percent of the algae oil DHA. The invention also discloses a method for preparing the algae oil DHA microcapsule powder. The algae oil DHA microcapsule powder produced by the invention is low in surface oil content and does not have DHA oxidation fishy smell, oxidation of the algae oil DHA is effectively delayed, the stability of the product is improved, and the shelf life is prolonged.

The invention belongs to the field of cordyceps militaris, and relates to a cordyceps militaris culture method capable of realizing high yield of carotenoids, in particular to a cordyceps militaris submerged fermentation culture method capable of realizing high yield of carotenoids. According to the cordyceps militaris culture method capable of realizing high yield of carotenoids, a strain activation medium, a seed solution medium and a liquid fermentation medium are screened elaborately, molasses, peptone, palm oil, hawthorn fruit, Lu'an tea powder, chitin, humic acid powder, Enteromorpha, zinc-amino acid chelate, water-soluble silicon, KH2PO4 and K2HPO4 are taken as main nutrition raw materials, and fermentation yield of carotenoids from cordyceps militaris is increased effectively; furthermore, vitamin C palmitate is added to the fermentation medium, so that accumulation of carotenoids is induced better, fermentation yield of carotenoids is further increased, and fermentation levelof carotenoids in the cordyceps militaris is increased effectively.

The invention discloses an anti-stress additive for crayfishes. The additive consists of the following raw materials in parts by weight: 30-45 parts of citric acid, 15-25 parts of vitamin C palmitate,10-25 parts of raw ginger extract, 7-20 parts of yeast cell wall polysaccharide, and 5-15 parts of Hengxing compound trace mineral element "Life support element". The preparation method is as follows: respectively crushing the raw materials, performing uniform mixing according to a certain proportion, and performing drying. The addition mass percentage of the anti-stress additive in the crayfishfeed is 5-10%; According to the invention, under the synergistic effect of the components, the addition of the anti-stress additive in the feed is only 5-10%, the average final weight of the crayfishes is improved by 11-18.6%, and the survival rate is improved by 9.33-34.67%.

The invention discloses a preparation method of vitamin C palmitate. The method comprises steps as follows: L-ascorbic acid, dimethylacetamide and trichloromethane are provided; dimethylacetamide, trichloromethane and L-ascorbic acid are mixed to form a mixed solution; anhydrous hydrogen chloride is introduced into the mixed solution, a palmitoyl chloride solution is dropwise added for an esterification reaction; at the later stage of the esterification reaction, inert gas, reductive gas and / or weak acid gas is / are introduced into the mixed solution to remove surplus hydrogen chloride produced during a reaction until the reaction ends. Vitamin C palmitate prepared with the preparation method of high-quality vitamin C palmitate contains fewer impurities and is high in quality and higher in yield.

The invention discloses a stable method for microencapsulating carotenoid. The method comprises 1) a step of completely dissolving a protecting colloid, sucrose or glucose, ascorbyl palmitate and EDTA into water, and adjusting pH to 10-11 to obtain a water phase A; 2) a step of completely dissolving carotenoid and an antioxidant into a solvent to obtain an oil phase B; 3) a step of adding the oil phase B into the water phase A under a condition of high-speed shearing and high-speed stirring; emulsifying the mixture to form an initial emulsion by stirring at a high speed; and heating and removing the solvent to obtain a microemulsion; and 4) a step of adding the obtained microemulsion into a spray drying system; and obtaining carotenoid particles or powder after spray drying. The carotenoid particles or powder prepared by the method have advantages of good dispersibility, high stability, good light permeability and small particle sizes.

The invention discloses a rivastigmine cutaneous penetration system which comprises an acrylic pressure sensitive adhesive composition of (meth)acrylate, a penetration enhancer, an antioxidant and active medicine. The acrylic pressure sensitive adhesive composition of (meth)acrylate is composed of the mixture of at least one of acrylic pressure sensitive adhesives of (meth)acrylate containing hydroxyl and at least one of polyvinylpyrrolidone or polyalkyl methacrylate copolymer. The penetration enhancer is composed of ethylene glycol monoethyl ether and at least one of lactic acid or lactate compounds. The antioxidant is at least one of alpha-tocopherol, vitamin C palmitate or 2,6-Di-tert-butyl -p-cresol (BHT). The active medicine is rivastigmine or pharmaceutically acceptable salt thereof. The rivastigmine cutaneous penetration system is relatively simple in preparation process, high in cutaneous releasing speed and capable of keeping the enough stability, and patch products with the smaller area can be prepared.

The invention discloses a brassica rapa food with anti-hypoxia effect and a preparation method thereof. The brassica rapa food with the anti-hypoxia effect comprises the following raw materials by weight: 80-120 parts of tartary buckwheat powder, 15-25 parts of brassica rapa, 12-16 parts of Chinese incarvillea herb, 10-14 parts of glossy privet fruits, 8-12 parts of fruits of vaccinium bracteatum,7-11 parts of bracken, 4-8 parts of salsola collina, and 2-6 parts of vitamin C palmitate. The root food with anti-hypoxia effect prepared from the natural raw materials of tartary buckwheat powder,brassica rapa, Chinese incarvillea herb, glossy privet fruits, fruits of vaccinium bracteatum, bracken, salsola collina, and vitamin C palmitate has good anti-hypoxia performance, is safe and free oftoxic or side effect, and can effectively protect the cardiovascular, cerebrovascular and neurodigestive systems. After eating, the root food can effectively alleviate high altitude sickness. The preparation process is simple, low in cost, and easy to realize industrial production.

The invention discloses modified dolomite for a heat-resistant flame-retardant fluoroplastic wire and cable material and a preparation method of the modified dolomite. The modified dolomite is prepared from the following raw materials in parts by weight: 50-70 parts of dolomite, 15-20 parts of barium metatitanate, 18-24 parts of BOVC resin, 10-15 parts of polypentabromobenzyl acrylate, 2-3 parts of bisphenol A bis(diphenyl phosphate), 3-6 parts of white wax, 2-5 parts of niobium diselenide, 5-10 parts of di-iso-decylphthalate, 2.5-4.5 parts of tin antimony oxide, 8-12 parts of silicon powder, 1-2 parts of p-aminophenol, 0.5-1 part of 4-vinylpyridine, 1-2 parts of vitamin C palmitate and 3-5 parts of auxiliaries. The interface performance of the modified dolomite subjected to modification treatment is remarkably improved from hydrophilicity to lipophilicity, so that the compatibility between the modified dolomite with a fluoroplastic base body is strengthened, action between the modified dolomite and high polymer molecules is strengthened and the filling performance of the dolomite is improved, and thus, the integral mechanical performances of the composite material are improved, and the development and application prospect is wide.

The invention provides micro-capsule powder. The micro-capsule powder is prepared from the following components in parts by weight: 3-5 parts of soybean lecithin, 20-30 parts of a filling agent, 3-5 parts of an emulsifying agent, 2-3 parts of chitosan, 1-2 parts of krill oil and 40-50 parts of water. The particle size of the micro-capsule powder is 1-100-mesh. The soybean lecithin has the functions of emulsifying, moistening and dispersing and has the effects of promoting fat metabolism in the body, muscle growth, nervous system development and anti-oxidative damage in the body; the chitosan has the effects of improving immunity, activating cells, preventing cancers, reducing blood fat, reducing blood pressure, resisting ageing and adjusting the body environment; and the krill oil has the effects of reducing blood fat and cholesterol, preventing cerebral hemorrhage and cerebral thrombosis, reducing blood viscosity and promoting blood circulation, can be conveniently absorbed by the human body, and has better health care effects. The micro-capsule powder can also contain beta-carotenes, astaxanthin, vitamin C palmitate and L-carnitine, so that the micro-capsule powder has multiple effects and can meet multiple demands of people.

The present invention provides a stable fat-soluble active ingredient composition, microcapsule and process for preparation and use thereof. The fat-soluble active ingredient composition comprises tocopherol, vitamin C palmitate and a fat-soluble active ingredient; wherein the weight ratio of tocopherol to vitamin C palmitate is 2-8:1, the weight ratio of a combination of tocopherol with vitamin C palmitate to the fat-soluble active ingredient is 7-13:100. The present invention obtains a novel antioxidant composition without hidden dangers for improving the stability of the fat-soluble active ingredient by screening a combination of antioxidants and adjusting their proportion and dose.

The invention belongs to the technical field of feed additives, and particularly relates to a composition of ester type catechin and vitamin C palmitate for breeding pigeons and a preparation method of the composition. The composition is prepared from catechin crude extract containing EGCG, vitamin C palmitate, a composite self-emulsifying agent, curing dispersing powder and a filling auxiliary material. In the preparation of the composition, the stability and the absorbability of the catechin can be effectively ensured by utilizing an encapsulation effect formed by the vitamin C palmitate and the composite self-emulsifying agent, an efficient synergistic effect is further achieved, the bioavailability of ECGC is remarkably improved, the instability problem of conventional catechin is solved, the biological efficiency of the ECGC is remarkably improved, the usage amount is lower, and the composition is suitable for industrial production. Raw materials used in the composition are all food-grade or feed-grade raw materials, no other chemical preparations are added, and the composition can be used as an antibiotic-replacing functional additive for improving the oxidation resistance and immunity of the breeding pigeons and improving the egg quality.