31 results about "Vitamin E product" patented technology

The invention relates to the fine chemistry industry synthesis field, and especially relates to an environmentally-friendly synthesis method of vitamin E. The method comprises the following steps: adding 150-200 parts by weight of toluene into a reaction device, sequentially adding 40 parts by weight of 2,3,5-trimethylquinhydrone and 40-80 parts by weight of isophytol under mechanical stirring, slowly adding 1.5-2.5 parts by weight of magnesium chloride and 0.8-1.2 parts by weight of a magnesium oxide supported silica catalyst after the above obtained reaction system is fully dissolved and clear, closing the reaction system, allowing the reaction system to undergo a reaction under a vacuum degree of -0.07 - -0.05MPa at a temperature of 55-65DEG C for 1.5-2.5h, and allowing toluene reflux to be maintained and generated water to be distilled out with the toluene reflux in the reaction to be in favor of the implementation of the reaction; and recovering the catalyst and the above solvent, and carrying out reduced pressure distillation of the solvent-distilled reaction system to obtain a required pale-yellow oily vitamin E product. The method has the advantages of repeated use of the supported catalyst, high yield, low energy consumption and environmental protection.

The invention discloses a method for separating, purifying and preparing natural vitamin E from crude oil of Maoyeshan tung tree seed, which belongs to the field of medicines, foods and feeds. The method mainly comprises the steps of preparing through a chromatographic column, eluting and concentrating a solvent, treating active carbon, decompressing, drying and the like, wherein the vitamin E inthe crude oil of the Maoyeshan tung tree seed can be directly eluted, separated and purified by using the chromatographic column and a petroleum ether-ethyl acetate system through a low-pressure chromatography; after being concentrated properly, the vitamin E is treated by the active carbon; and a high-quality natural vitamin E product can be obtained by being dried at low temperature in a vacuumway. The method has the advantages that: the content of the vitamin E in the crude oil can be directly improved from about 0.1% to above 70% through a few operation steps; simultaneously, the processis simple and has a few operation steps and low equipment requirement; a high-temperature heating process is unnecessary; the separation residue can be used in other purposes of the oil of the Maoyeshan tung tree seed; the method is applicable for enterprises of different scales to product; and the method has a wide application prospect.

The invention provides a decoloration and purification method for vitamin E. The method includes the following steps: (a) providing a composite decoloration agent to perform decoloration to a vitamin E product; (b) eluting the decolored vitamin E in the step (a) through column chromatography by means of an eluting agent, and collecting an eluent component; and (c) concentrating the eluent component in the step (b) to prepare the decolored and purified vitamin E. In the step (a), the composite decoloration agent includes activated clay, activated carbon, diatomite and magnesium silicate according to 100:50-100:30-70:10-50 by mass. The decoloration and purification method can shallow the color and reduce the viscosity of vitamin E, thereby improving flowability and also increasing the purity of the vitamin E. The vitamin E is low in loss and has a high recovery rate during the decoloration and purification.

The present invention discloses a method of extracting vitamin E from plant oil deodorized and distilled substance of plant oil. The present invention has the technical proposal that: through crystallization of previously separated crude sterol and molecular distillation of sterol ester, two types of lipase are orderly used respectively to realize the methyl esterification of free fatty and the esterification of triglyceride in deodorized and distilled substance. Then the molecular distillation technology is used to realize the separation of methyl ester and vitamin E in the fatty acid so as to prepare the concentrated vitamin E product. The present invention uses lipase to replace the conventional strong acid and alkali. Two types of lipase are used to replace the methyl esterification of free fatty and the esterification of triglyceride in deodorized and distilled substance. Compared with the prior art, the reaction of the present invention occur in a mild circumstance; the reactionprocess is easy to be controlled, and conducive to the recycling and use of vitamin E. Besides, the operation is relatively simple and has no problems of environmental pollution. The purity of concentrated vitamin E can reach above 30 percent.

The invention discloses a method for removing mineral oil in natural vitamin E, which comprises the following steps: (1) sample loading: take a separating agent, add eluent a, fill it into a chromatographic column, wash it with eluent a Decompress the chromatography column, dissolve and load the sample according to raw material: eluent a (m / v) = 2: 1; (2) Elution: elute with the eluent a described earlier after loading the sample, and then Elute with eluent b; (3) Collection: collect the eluate in sections and concentrate to obtain natural vitamin E products; (4) Regeneration: wash and regenerate the chromatographic column with eluent c; the raw material is natural Vitamin E; the eluent a is a weak polar solvent; the eluent b is a mixed weak polar solvent composed of the eluent a and the eluent c; the eluent c It is a strong polar solvent. The invention well solves the problem of trace residue of mineral oil in natural vitamin E by utilizing the polarity difference between mineral oil and natural vitamin E.

The invention discloses a method for continuously removing dioxin from natural vitamin E. The method comprises the following steps of: dissolving the natural vitamin E in a solvent of which the volume is 2-6 times that of the natural vitamin E; heating to 40-70 DEG C under the protection of nitrogen; uniformly mixing, and then continuously introducing the mixture into a fixed bed in which a filler is filled from the top end of the fixed bed; collecting effluent liquid after the solution stays for 0.5-5 hours; filtering; distilling and concentrating the filtrate; and refining through molecular distillation. The quality of a vitamin E product treated by the method can reach a limit standard to the dioxin by the European Union, the technological process is simple, and the running cost is low, so that the method is a relatively reliable treatment method and is suitable for industrial bulk production.

The invention relates to a method for removing zearalenone from natural vitamin E and a pure vitamin E product obtained by the method. The method for removing zearalenone comprises the steps of pretreatment with iminodiacetic acid type chelating resin, column packing, adsorption, washing, separation and the like. The process of the method for removing zearalenone in the present invention is simple, does not introduce other substances, does not require other separation steps, and does not cause secondary pollution to vitamin E products; compared with adsorbents such as diatomite montmorillonite, the adsorption The efficiency is about 80-90% high, and the material loss is small.

The invention relates to reparation method of a fortified vitamin E-containing fresh cheese. The method comprises the following steps: 1, dissolving vitamin E and beta-whey protein in water, stirring with magnetic force so as to obtain a reaction solution, and dialyzing in a dialyzing bag so as to obtain a self-assembly beta-lacto globulin-fortified vitamin E product; 2, inoculating lactococcus in an M17 culture medium, carrying out continuous activation for three generations to obtain a bacterium solution, and inoculating the bacterium solution in a whey basal culture medium for culturing so as to obtain a fermentation agent; 3, mixing the self-assembly beta-lactoglobulin-fortified vitamin E product and fresh cow milk, adding calcium chloride, inoculating the fermentation agent, carrying out acid production, and curding so as to obtain the fortified vitamin E-containing fresh cheese. In the method, only beta-lactoglobulin serves as a carrier, no other coupling reagents, emulgators and organic solvents are added; on one hand, the food safety of the fortified vitamin E-containing fresh cheese is good, on the other hand, the edibleness and the utilization rate of the vitamin E are increased; the shelf life of the fresh cheese is prolonged.

A method of reducing the content of a plasticiser in vitamin E through utilizing strong-alkaline anion exchange resin is provided. The method can reduce the content of the plasticiser in vitamin E products.

The invention discloses a preparation technology for a natural vitamin E. The preparation technology comprises esterification, water washing, cold crystallization, solid-liquid separation, molecular distillation, column chromatography adsorption, and secondary molecular distillation and the like; according to the preparation technology for the natural vitamin E, the molecular distillation technology and the column chromatography technology are combined, so that the higher-purity natural vitamin E is prepared; the adsorption resin is a filling agent and used for purifying the natural vitamin E through column chromatography, the total content of the natural Vitamin E product prepared is 90% above, and the total yield is 80% above. Because the molecular distillation is performed for two times, by-products can be removed to the greatest extent, the natural vitamin E with good quality, more transparent color, qualified optical rotation, and high quality can be prepared; the process route has the characteristics that the steps are less, the yield is high, and the operation condition is mild; meanwhile, the process can be reduced greatly, the high-purity natural vitamin E can be obtained, the yield is higher, and the cost is reduced.

The present invention relates to the preparation process of high-content vitamin E through condensation of trimethyl hydroquinone and isophytol. In polar ester solvent and in the presence of zinc halide and strong acid, trimethyl hydroquinone and isophytol produce condensation reaction. The present invention features that during condensation reaction, co-catalyst in the amount of 0.1-2.0 wt% of isophytol is added to inhibit the generation of dl-alpha-tocopherol isomer. The present invention can produce vitamin E product with vitamin E content over 98 % for corresponding medicinal use.