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42 results about "Ethyl linolenate" patented technology
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ETHYL LINOLENATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products.
Process for preparing alpha-ethyl linolenate with purity more than 80%
InactiveCN1837182AWide range of ways to addConvenient supplementOrganic compound preparationCarboxylic acid esters preparationEthyl esterZinc
The invention relates to a process for preparing alpha-zinc linolenate by using perilla seeds as the raw material, which comprises the steps of squeezing, filtering, saponifying, acidifying, water scrubbing, urea complexing, freezing, filter-pressing, elevating temperature, extracting, esterifying, water scrubbing, dewatering, and vacuum distilling. The obtained product has a purity of over 80%.
Owner:安阳化学工业集团有限责任公司
Process for manufacturing high-purity alpha-ethyl linolenate
ActiveCN104693032AYield maximizationIncrease productionOrganic compound preparationCarboxylic acid esters separation/purificationDistillationEsterification reaction
The invention discloses a process for manufacturing high-purity alpha-ethyl linolenate, and belongs to the field of chemistry. The process comprises esterification reaction; the raw material comprises perilla oil; the perilla oil is saponified, acidified and washed to obtain fatty acid containing alpha-linolenic acid; the esterification reaction is directly carried out by adopting the fatty acid containing alpha-linolenic acid obtained by washing; the alpha-ethyl linolenate in the product is subjected to urea encapsulated purification after esterification; fatty acid ethyl ester of the alpha-ethyl linolenate, 95% ethanol and urea are added to a reactor according to a weight ratio of 1:(1-5):(1-5) during urea encapsulated purification, the mixture is heated to 80-100 DEG C and refluxed for 30-60min, then cooling and purification are carried out stage by stage, and the finished product is obtained by dehydration and molecular distillation. The process greatly simplifies the manufacturing process of the alpha-ethyl linolenate, and improves the yield.
Owner:HENAN LINUO BIOCHEM CO LTD
Method for extracting high-purity Alpha-ethyl linolenate from silkworm chrysalis oil
ActiveCN101624345AReduce churnHigh selectivityOrganic compound preparationCarboxylic acid esters preparationAbsorption columnSolvent
The invention provides a method for extracting high-purity Alpha-ethyl linolenate from silkworm chrysalis oil, which realizes the separation of the high-purity Alpha-ethyl linolenate from mixed fatty acid by a complexing absorbing agent of metal ions and comprises the following steps: firstly, performing alcoholysis on the silkworm chrysalis oil under the help of ethanol ultrasonically to preparesilkworm chrysalis mixed ethyl fatty acid; secondly, passing the silkworm chrysalis mixed ethyl fatty acid through a pre-saturated complexing absorption column of metal ions of competitive absorbent,wherein saturated fatty acid and monounsaturated fatty acid freely pass, and polyunsaturated fatty acid and silver ions form a Pi compound; and thirdly, changing elution solvent for eluting. The purity of the obtained Alpha-ethyl linolenate is 95-99 percent.
Owner:ZHEJIANG UNIV OF TECH
Gamma-linolenate fat emulsion intravenous injection and preparation method thereof
The invention provides gamma-linolenate fat emulsion intravenous injection and a preparation method thereof. The preparation method comprises the following steps of: mixing raw materials such as gamma-linolenate, lecithin, glycerin, sterile pure water, an antioxidant, a stabilizer, a pH regulator and the like under the protection of nitrogen, violently stirring and shearing at a high speed to form primary emulsion; and emulsifying by using a high-pressure homogenizer, filtering by using a microporous membrane filter, filling, sealing and sterilizing to obtain the gamma-linolenate fat emulsion intravenous injection, wherein the gamma-linolenate is gamma-methyl linolenate, gamma-ethyl linolenate, gamma-ethylene linolenate, gamma-propylene linolenate or gamma-triglyceride linolenate, and the gamma-linolenic acid content of the injection is over 90 percent. The gamma-linolenate fat emulsion intravenous injection is used for the fields of medical treatment and health and can be used as a nutritional and therapeutic medicament through abenteric intravenous injection administration, intestinal tube feeding or oral administration.
Owner:王京南
Method for extracting ethyl linolenate from blackberry seed oil
ActiveCN104478714AHigh purityNo harmful residuesOrganic compound preparationCarboxylic acid esters separation/purificationAlcoholDistillation
The invention provides a method for extracting ethyl linolenate from blackberry seed oil. The method comprises the following steps: blackberry seed oil, absolute ethyl alcohol and sodium ethoxide are mixed in the mass ratio of 1: (0.6-0.8): (0.01-0.03) and added to an extraction kettle, the temperature and pressure of the extraction kettle are adjusted, and the mixture reacts; the temperature of the extraction kettle is adjusted to a set process parameter; the pressure of the extraction kettle is adjusted to a set process parameter, and extraction is started; meanwhile, an ultrasonic device is started, and ethyl linolenate is extracted from a sampling port of a distillation device. The method is reasonable in design and convenient to operate, blackberry seed oil is firstly subjected to ethyl esterification, then the traditional supercritical technology and a distillation technology are combined and used for direct extraction of ethyl linolenatefrom the blackberry seed oil, and ultrasonic waves are used for reinforcement in a purification process, so that not only is the technological process simplified, the extraction time is shortened, but also the purity of the obtained ethyl linolenate is high and can reach about 92% at the most, harmful residues are avoided, the activity is high, and foundation is laid for further extraction of linolenic acid oil.
Owner:HUAIHAI INST OF TECH
Method of separating alpha ethyl linolenate by cuprous chloride complexation adsorption
InactiveCN1651396AEasy to separateHigh purityOrganic compound preparationCarboxylic acid esters preparationMixed fatty acidAlcohol
A process for extracting high-purity alpha-ethyl linolenate from the mixed ethyl ester of fatty acid by using cuprous chloride for complexing and adsoptive separating includes alcoholyzing reaction between the plant oil rich in alpha-linoleic acid and alcohol, flowing the resultant through complexing-adsorbing column carrying Cu ions, and eluting with solvent. Its advantage is low cost.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Method of producing high-purity ethyl linolenate
InactiveCN1219744CSimple processShort processOrganic compound preparationCarboxylic acid esters preparationEthyl linolenateEthyl fumarate
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Method for extracting high-purity alpha-linolenic acid by taking flaxseed as raw material
InactiveCN107473970ASimple processReduce manufacturing costOrganic active ingredientsNervous disorderDistillationΑ-linolenic acid
The invention discloses a method for extracting high-purity alpha-linolenic acid by taking flaxseed as a raw material and a prepared alpha-ethyl linolenate preparation. The method comprises the following steps: cold-pressing, refining and de-waxing the flaxseed, thereby acquiring flax seed oil; dissolving the flax seed oil in ethyl alcohol for performing esterification reaction, thereby acquiring a mixed fatty acid; cladding urea, slowly cooling, evaporating and concentrating, thereby acquiring mixed unsaturated fatty acid ethyl ester containing over 70% of alpha-ethyl linolenate; performing molecular distillation on the crude product of alpha-ethyl linolenate, thereby acquiring the alpha-ethyl linolenate in purity above 85%; and purifying the alpha-ethyl linolenate in purity above 85% through column chromatography, thereby acquiring the alpha-ethyl linolenate containing more than 95% of alpha-linolenic acid. The method disclosed by the invention has the advantages of simple process, low production cost, excellent separating effect, high purity and suitability for large-scale production. The alpha-ethyl linolenate preparation prepared according to the method disclosed by the invention is high in purity, is stable and reliable, is convenient for large-scale production and use and has high application value.
Owner:华子昂
Preparation method of alpha-ethyl linolenate
InactiveCN106966902ASufficient sourceWide coverageFatty acid esterificationOrganic compound preparationThree levelVegetable oil
The invention discloses a preparation method of alpha-ethyl linolenate, wherein the preparation method includes steps of performing ester exchange reaction on vegetable oil and ethanol, and acquiring mixed fatty acid ester; performing a three-level molecular distillation on the mixed fatty acid ester, and then performing urea complexing reaction with urea and ethanol, and acquiring the high-purity alpha-ethyl linolenate. The preparation method of alpha-ethyl linolenate uses the method of combining three-level molecular distillation-urea complexing-chromatography purification, avoids the use of massive acid and alkali organic solvents; the organic solvent amount is few, and the method is performed by using the existed device, the equipment requirement is low. Moreover, the loss of the alpha-ethyl linolenate is few and the yield is high; the product purity can reach over 95%; the product purity can reach over 95%, so the method is applicable to the industrial production. Meanwhile, the preparation method takes plant oil as the raw material, reduces the requirement on the content of raw material alpha-linolenic acid, and enriches the raw material source; thus the production cost is reduced effectively, and the method has very strong practicability.
Owner:武汉藤欣生物工程有限公司
Production process of high-purity alpha-ethyl linolenate
ActiveCN104693033AYield maximizationIncrease productionOrganic compound preparationCarboxylic acid esters separation/purificationPerilla oilEthyl ester
The invention discloses a production process of high-purity alpha-ethyl linolenate, and belongs to the field of chemistry. The process is characterized in that esterification reaction is adopted, raw materials include perilla oil, the perilla oil is saponified, acidified and washed to obtain fatty acid containing alpha-linolenic acid, the esterification reaction is directly carried out by adopting the washed fatty acid containing the alpha-linolenic acid, the esterification reaction is carried out at one time and carried out in a reaction device, the reaction device is connected with a water distribution device, azeotrope of ethanol and water is simultaneously evaporated into the water distribution device during the esterification reaction in a period of time, and the urine enveloping purification is carried out for the alpha-ethyl linolenate in a product after the esterification reaction. By adopting the production process, the production process of the alpha-ethyl linolenate is simplified, the productivity is greatly improved, the production time is shortened, and the production efficiency is improved.
Owner:HENAN LINUO BIOCHEM CO LTD
Preparation process of high-purity alpha-ethyl linolenate
InactiveCN109369389ASimple processBig pollutionFatty acid esterificationFatty acids production/refiningDistillationSolvent
The invention discloses a preparation process of high-purity alpha-ethyl linolenate, and belongs to the technical field of preparation of unsaturated fatty acids. The preparation process comprises thefollowing steps: (1) carrying out detection and pretreatment: detecting physical and chemical indexes of raw oil and carrying out preparation treatment; (2) carrying out ethyl esterification on the raw oil; (3) carrying out short-range distillation for primary purification; (4) carrying out freezing crystallization; and (5) carrying out short-range distillation for secondary purification to obtain a high-purity alpha-ethyl linolenate product with the content of alpha-linolenic acid of more than or equal to 83%. The preparation process provided by the invention has the advantages of low energyconsumption, low production cost, small environmental pollution, and capability of carrying out large-scale and continuous industrial production, and the produced alpha-ethyl linolenate is high in purity and yield, almost has no solvent residue, and is clear in color, superior in quality and long in shelf life.
Owner:燕园泽龙(涿鹿)生物科技有限公司
Alpha-ethyl linolenate microemulsion and preparation method thereof
InactiveCN108553419ALow absorption rateImprove absorption rateOrganic active ingredientsSenses disorderInorganic saltsAntioxidant
Disclosed is an alpha-ethyl linolenate microemulsion. The alpha-ethyl linolenate microemulsion is prepared from, by weight, 4-70 parts of alpha-ethyl linolenate or oil phase containing alpha-ethyl linolenate, 6-40 parts of surfactant and co-surfactant, 0-1.5 parts of inorganic salt, 0.1-1.5 parts of antioxidant and the balance water. A preparation method of the alpha-ethyl linolenate microemulsioncomprises the steps of A, accurately weighing all the required components; B, controlling the heating temperature within the range of 20-30 DEG C, mixing alpha-ethyl linolenate or the oil phase containing alpha-ethyl linolenate with the antioxidant to form a mixed oil phase, and adding the surfactant and the co-surfactant to the mixture; C, adding water or water dissolved with inorganic salt intothe mixed system obtained in step B. By means of the method, alpha-linolenic acid in the microemulsion is protected and fully utilized.
Owner:ANYANG INST OF TECH
Stabilized brood pheromone for manipulating the behavior and physiology of honey bees
ActiveUS7727517B2Raise the ratioLower latencyBiocideHydroxy compound active ingredientsMethyl linoleateEthyl stearate
This invention relates to a stabilized honey bee pheromone and methods of stabilizing the honey bee brood pheromone, thereby enabling the production and sustained use of commercial products based on that pheromone. The stabilized pheromone can be used to manipulate the behavior and improve the performance of worker honey bees, resulting in overall increased vigor of the hive. The pheromone composition comprises two or more of ethyl linoleate, ethyl linolenate, ethyl oleate, ethyl palmitate, ethyl stearate, methyl linoleate, methyl linolenate, methyl oleate, methyl palmitate and methyl stearate and an antioxidant.
Owner:OMS INVESTMENTS INC +1
Gamma-ethyl linolenate soft capsule and preparation thereof
InactiveCN101401800AImprove stabilityNo pollution in the processOrganic active ingredientsPharmaceutical delivery mechanismGlycerolEvening Primrose Oil
The invention discloses a gama-linolenic acid ethyl soft capsule and a process for preparing the same. The components in the soft capsule comprise evening primrose oil, vitamin E oil, and glycerin with the proportion being 392 to 2 to 57. The process for preparing the soft capsule comprises the following: step one, preparing the evening primrose oil through a supercritical extraction method; step two, uniformly mixing the evening primrose oil, the vitamin E oil, and the glycerin according to the proportion of 392 to 2 to 57; and step three, filling the mixture into capsule shells according to the standard that each capsule contains 400 milligrams of content. The stability of gama-linolenic acid can be improved through esterification treatment; the vitamin E is added into the soft capsule to improve the product stability and prevent the soft capsule from being oxidized; the form of soft capsule can separate the content from the external aerobic environment and is convenient to take and carry around. The process adopts the supercritical extraction method to extract the evening primrose oil, thus the preparation process has the advantages of short extraction time, high separation efficiency, low operation temperature, and no solvent pollution.
Owner:沙丽塔娜特·吐尔干
Synthetic method of triolefin insect sex attractant
InactiveCN103262841AReduce pollutionShort processBiocidePest attractantsPhosphorus tribromideGrignard reagent
The invention discloses a synthetic method of a triolefin insect sex attractant. The synthetic method comprises the steps of (1) enabling alpha-ethyl linolenate to react with absolute ether to generate alpha-linoleny alcohol under catalytic action of LiAlH4; (2) enabling the alpha-linoleny alcohol to react with phosphorus tribromide to generate cis, cis, cis-1-bromine-9,12,15-gadusene in the presence of an organic solvent with weak polarity; and (3) enabling the cis, cis, cis-1-bromine-9,12,15-gadusene to react with a grignard reagent to generate cis, cis, cis-3,6,9-Cn triene under the effects of tetrahydrofuran, lithium tetrachlorocuprate and N-methyl pyrrolidone. By adopting the synthetic method of the triolefin insect sex attractant disclosed by the invention, an insect in-vivo biosynthetic pathway is simulated; polyene hydrocarbon information sex pheromone components of C19, C20 and C21 are synthesized by taking cheap and available alpha-ethyl linolenate as the material; and the synthetic method is short in technologic process, mild in synthetic reaction condition, short in reaction time, high in yield, simple and convenient to operate, wide in application range, low in cost, fewer in three wastes, little in environmental pollution, and easy to industrialize, and the product can be easily separated.
Owner:SHANXI AGRI UNIV
Stabilized brood pheromone for manipulating the behavior and physiology of honey bees
ActiveUS20080124300A1Raise the ratioIncrease load weightBiocideHydroxy compound active ingredientsMethyl linoleateAntioxidant
This invention relates to a stabilized honey bee pheromone and methods of stabilizing the honey bee brood pheromone, thereby enabling the production and sustained use of commercial products based on that pheromone. The stabilized pheromone can be used to manipulate the behavior and improve the performance of worker honey bees, resulting in overall increased vigor of the hive. The pheromone composition comprises two or more of ethyl linoleate, ethyl linolenate, ethyl oleate, ethyl palmitate, ethyl stearate, methyl linoleate, methyl linolenate, methyl oleate, methyl palmitate and methyl stearate and an antioxidant.
Owner:OMS INVESTMENTS INC +1
Natural medicine for treating various chronic diseases and medicinal formula food
The invention discloses a natural medicine for treating various chronic diseases and medicinal formula food. The natural medicine comprises the following components: 0.5-2.5 parts of astaxanthin, 10-21 parts of DHA (Docosahexaenoic Acid), 5-10 parts of EPA (Timnodonic Acid), 11-29 parts of alpha-ethyl linolenate, 0.2-1.3 parts of coenzyme Q 10, 1.0-5 parts of arachidonic acid and 35-65 parts of perilla oil. The natural medicine and the medicinal formula food are used for treating various chronic diseases caused by arteriosclerosis and blood embolism, and have the function of reducing fat and treating cardiovascular and cerebrovascular diseases, diabetes syndromes, hypertension and various embolism diseases caused by arteriosclerosis according to traditional Chinese medicine prescriptions and theories.
Owner:王茹
Continuous preparation method of high-quality ethyl linolenate
InactiveCN102433361ARelieve pressureIncrease pressureOrganic compound preparationCarboxylic acid esters preparationSolubilityOxygen
The invention discloses a supercritical continuous processing process from the extraction of linolenic acid-containing oil to the hydrolysis and esterification of thelinolenic acid and the separation and purification of ethyl linolenate. The technical proposal of the continuous processing process comprises the following steps of: crushing a natural plant containing the linolenic acid oil, extracting the oil by means of the characteristics of CO2 supercritical extraction, hydrolyzing the oil using lipase in a supercritical environment so as to release fatty acid, and performing ethyl-esterification on the fatty acid by means of supercritical high pressure catalysis; next, separating out ethyl linolenate by means of an ethanol entrainer; and finally, performing urea column chromatography to obtain high-purity ethyl linolenate by means of the high solubility and low viscosity characteristics of the supercritical fluid. Moreover, contact with oxygen is avoided in the processing process, high-quality ethyl linolenate product can be obtained.
Owner:SHANGHAI ZHONGPEI BIOLOGICAL TECH
Process for preparing alpha-ethyl linolenate with purity more than 80%
InactiveCN100366601CWide range of ways to addConvenient supplementOrganic compound preparationCarboxylic acid esters preparationEthyl esterZinc
The invention relates to a process for preparing alpha-zinc linolenate by using perilla seeds as the raw material, which comprises the steps of squeezing, filtering, saponifying, acidifying, water scrubbing, urea complexing, freezing, filter-pressing, elevating temperature, extracting, esterifying, water scrubbing, dewatering, and vacuum distilling. The obtained product has a purity of over 80%.
Owner:安阳化学工业集团有限责任公司
A personal care composition
ActiveUS20200360252A1Reduce and prevent inflammationCosmetic preparationsHair cosmeticsTopical surfacePersonal care
The invention relates to a personal care composition, more particularly to a composition for application to a topical surface that prevents or reduces inflammation. The composition could be delivered in the form of a skin, scalp, hair or oral care product, more particularly a skin care product. The benefit is delivered via a combination of a polyunsaturated fatty acid (PUFA) or ester thereof selected from docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), DHA-ethyl ester, EPA-ethyl ester, DHA-triglyceride, EPA-triglyceride, dihomogamma-Linolenic Acid (DGLA), DGLA-ethyl ester, DGLA-triglyceride or combinations thereof and a 4-substituted resorcinol compound, wherein the mole ratio of the PUFA or ester thereof to the 4-substituted resorcinol compound is 5:1 to 1:5.
Owner:CONOPCO INC D B A UNILEVER
Application of lipoic acid as antioxidant in ethyl polyenoate preparation or pupal fat alpha-ethyl linolenate preparation
InactiveCN106729725AGuaranteed curative effectAvoid side effectsOrganic active ingredientsPharmaceutical non-active ingredientsSide effectCurative effect
The invention provides an application of lipoic acid as an ioxidant in ethyl polyenoate preparation or pupal fat alpha-ethyl linolenate preparation. Ehyl polyenoate and pupal fat alpha-ethyl linolenate drugs are both polyunsaturated fatty acid drugs. With a plurality of unsaturated double bonds, the ethyl polyenoate and pupal fat alpha-ethyl linolenate are easily oxidized by contact with oxygen in air. After peroxidation, the curative effect is seriously influenced, and side effects may be generated. Through study and experiment, lipoic acid realizes remarkably effective oxidation resistance against ethyl polyenoate and pupal fat alpha-ethyl linolenate drugs; by replacing vitamin E with lipoic acid, an effective anti-oxidation effect on the two drugs is realized; and unprecedented technical progress and innovation are realized for existing anti-oxidation way of the two drugs.
Owner:北京百慧生化制药有限责任公司
Preparing method of ethyl linolenate capsules
ActiveCN106109436AHigh purityHigh purity high purity 90.0-96.2wt%Organic active ingredientsAntipyreticMass ratioDistillation
The invention provides a preparing method of ethyl linolenate capsules. The preparing method includes the following steps that 1, linseed oil, absolute ethyl alcohol and sodium ethoxide are mixed by the mass ratio of 1:(0.4-0.6):(0.008-0.012) and then put into a reaction tank, nitrogen is introduced at the temperature of 50-70 DEG C, and then the mixture is stirred in a reflux mode for 2-3 h; excessive ethyl alcohol is removed through reduced pressure distillation; sucrose fatty acid ester of 0.5-2% is added, freezing crystallization is carried out on an alpha-crude linolenic acid product for 10-24 h at the temperature of 0- minus 30 DEG C, the crude ethyl linolenate product is obtained through filtering; the pH value is adjusted to 6-7 with hydrochloric acid, the organic phase is separated through washing of saturated salt water, and the refined ethyl linolenate is obtained through drying; 2, purified ethyl linolenate is obtained through molecular distillation; 3, the purified ethyl linolenate serves as soft capsule content to prepare the ethyl linolenate capsules. High-purity ethyl linolenate is obtained through a series of combined processing, and sucrose fatty acid ester will not enter the final product.
Owner:GANSU CHANGQING BIOLOGICAL TECH
A method for dewaxing pupae oil α-ethyl linolenate bulk drug and production method of pupae oil α-ethyl linolenate bulk drug
ActiveCN106831411BRemove confusionIncrease contentPreparation by ester-hydroxy reactionCarboxylic acid esters separation/purificationBiotechnologyWax
The invention provides a novel method for removing wax in crude pupal fat of a pupal fat alpha-linolenic acid ethyl ester crude drug. 7-20% NaOH is added into the crude pupal fat and prepared into NaOH-ethanol water solution according to the weight ratio of NaOH-ethanol water solution=(10-25):100 in advance, the NaOH-ethanol water solution is stirred for 20-30 minutes at the temperature of 60-75 DEG C, static layering is performed, upper oily substances are collected, and lower deposits and water are discarded to obtain dewaxed pupal fat. The wax in the crude pupal fat is removed by an alkaline process, the problem of incapability of separating the pupal fat alpha-linolenic acid ethyl ester from the wax by inclusion in subsequent urea inclusion is prevented, the method is simple, rapid and effective, the content of effective components is increased, production time is shortened, and yield is improved.
Owner:北京百慧生化制药有限责任公司
Personal care composition
ActiveUS11419801B2Reduce and prevent inflammationCosmetic preparationsHair cosmeticsTopical surfacePersonal care
The invention relates to a personal care composition, more particularly to a composition for application to a topical surface that prevents or reduces inflammation. The composition could be delivered in the form of a skin, scalp, hair or oral care product, more particularly a skin care product. The benefit is delivered via a combination of a polyunsaturated fatty acid (PUFA) or ester thereof selected from docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), DHA-ethyl ester, EPA-ethyl ester, DHA-triglyceride, EPA-triglyceride, dihomogamma-Linolenic Acid (DGLA), DGLA-ethyl ester, DGLA-triglyceride or combinations thereof and a 4-substituted resorcinol compound, wherein the mole ratio of the PUFA or ester thereof to the 4-substituted resorcinol compound is 5:1 to 1:5.
Owner:CONOPCO INC D B A UNILEVER
A method for preparing chromatographically purified alpha-linolenic acid ethyl ester
ActiveCN103951560BSimple processLess one-time investmentOrganic compound preparationCarboxylic acid esters separation/purificationChromatographic separationWorking temperature
The invention discloses a method for preparing chromatographically purified ethyl alpha-linolenate. The method comprises the following steps of: purifying an ethyl alpha-linolenate crude product with content of not less than 50% as a raw material by preparative chromatography separation equipment, wherein methyl alcohol or ethyl alcohol is used as an eluent, the working temperature of a system is set to 25-30 DEG C, ODS is used as a chromatographic stationary phase, materials are charged by a six-way sampling valve, and the eluent is charged by a constant-pressure and constant-flow pump; fractionally collecting the eluted fractions, and recovering the eluent by reduced pressure concentration to obtain high-purity ethyl alpha-linolenate, wherein the yield is high. The whole process is simple in flow, low in production cost, low in production energy consumption, zero-emission and pollution-free, capable of continuously producing and increasing production efficiency, and suitable for large-scale production. The ethyl alpha-linolenate purified by the method is high in purity, low in solvent residue, and capable of meeting the needs of industries such as chemical analysis, medicines and health products.
Owner:HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
Synthetic method of triene insect sex attractant
InactiveCN103262841BReduce pollutionShort processHydrocarbon by hydrocarbon and non-hydrocarbon condensationPhosphorus tribromideGrignard reagent
Owner:SHANXI AGRI UNIV
Stabilizing agent specially used for alpha-linolenic acid/alpha ethyl linolenate, preparation method and application thereof
ActiveCN101659903ALow requirements for production equipmentSimple production processFatty acid esterificationFatty acids production/refiningAcid valueΑ-linolenic acid
The invention relates to a stabilizing agent specially used for alpha-linolenic acid / alpha ethyl linolenate, which is prepared by mixing active floridin, alkali and reducing agent according to the mass ratio of 1:0.025-0.1:0.125-0.50. The invention also provides a preparation method of the stabilizing agent specially used for the alpha-linolenic acid / the alpha ethyl linolenate, and an applicationthereof. When in use in the production process of the alpha-linolenic acid and the alpha ethyl linolenate with high purity, the stabilizing agent specially used for the alpha-linolenic acid / the alphaethyl linolenate can effectively reduce the peroxide value and the acid value of the product, improve the finished product ratio, and greatly lower the production cost; and furthermore, the stabilizing agent is simple to prepare, convenient for production and use and beneficial to industrialized production.
Owner:河北欣奇典生物科技有限公司
Method of separating alpha ethyl linolenate by cuprous chloride complexation adsorption
InactiveCN100369884CEasy to separateHigh purityOrganic compound preparationCarboxylic acid esters preparationMixed fatty acidAlcohol
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
A kind of preparation method of ethyl linolenate soft capsule
ActiveCN106109436BHigh purityEnhance anti-inflammatoryOrganic active ingredientsAntipyreticSoftgelSucrose
The invention provides a preparing method of ethyl linolenate capsules. The preparing method includes the following steps that 1, linseed oil, absolute ethyl alcohol and sodium ethoxide are mixed by the mass ratio of 1:(0.4-0.6):(0.008-0.012) and then put into a reaction tank, nitrogen is introduced at the temperature of 50-70 DEG C, and then the mixture is stirred in a reflux mode for 2-3 h; excessive ethyl alcohol is removed through reduced pressure distillation; sucrose fatty acid ester of 0.5-2% is added, freezing crystallization is carried out on an alpha-crude linolenic acid product for 10-24 h at the temperature of 0- minus 30 DEG C, the crude ethyl linolenate product is obtained through filtering; the pH value is adjusted to 6-7 with hydrochloric acid, the organic phase is separated through washing of saturated salt water, and the refined ethyl linolenate is obtained through drying; 2, purified ethyl linolenate is obtained through molecular distillation; 3, the purified ethyl linolenate serves as soft capsule content to prepare the ethyl linolenate capsules. High-purity ethyl linolenate is obtained through a series of combined processing, and sucrose fatty acid ester will not enter the final product.
Owner:GANSU CHANGQING BIOLOGICAL TECH
A kind of alpha-linolenic acid ethyl ester microemulsion and preparation method thereof
InactiveCN108553419BLow absorption rateImprove absorption rateOrganic active ingredientsSenses disorderAntioxidantOil phase
Disclosed is an alpha-ethyl linolenate microemulsion. The alpha-ethyl linolenate microemulsion is prepared from, by weight, 4-70 parts of alpha-ethyl linolenate or oil phase containing alpha-ethyl linolenate, 6-40 parts of surfactant and co-surfactant, 0-1.5 parts of inorganic salt, 0.1-1.5 parts of antioxidant and the balance water. A preparation method of the alpha-ethyl linolenate microemulsioncomprises the steps of A, accurately weighing all the required components; B, controlling the heating temperature within the range of 20-30 DEG C, mixing alpha-ethyl linolenate or the oil phase containing alpha-ethyl linolenate with the antioxidant to form a mixed oil phase, and adding the surfactant and the co-surfactant to the mixture; C, adding water or water dissolved with inorganic salt intothe mixed system obtained in step B. By means of the method, alpha-linolenic acid in the microemulsion is protected and fully utilized.
Owner:ANYANG INST OF TECH
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