73 results about "Arachidic acid" patented technology

The subject invention relates to the identification of four genes involved in the elongation of polyunsaturated acids (i.e., “elongases”) and to uses thereof. Two of these genes are also involved in the elongation of monounsaturated fatty acids. In particular, elongase is utilized in the conversion of gamma linolenic acid (GLA) to dihomogamma linolenic acid (DGLA) and in the conversion of DGLA or 20:4n-3 to eicosapentaenoic acid (EPA). DGLA may be utilized in the production of polyunsaturated fatty acids, such as arachidonic acid (AA), docosahexaenoic acid (DHA), EPA, adrenic acid, ω6-docosapentaenoic acid or ω3-docosapentaenoic acid which may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.

A non-lauric, non-trans, non-temper (Non-LTT) fat composition comprising a fraction obtained from a randomised triglyceride mixture in which min. 90% by weight of the constituent fatty acids are: palmitic (C16:0), stearic (C18:0), arachidic (C20:0) behenic (C22:0), oleic (C18:1) and linoleic (C18:2) acid and the total content of arachidic and behenic acid is 3-40% by weight and the total content of palmitic and stearic acids is 25-60% by weight, said fraction having the following physical and chemical properties: (1) slip melting point measured according to AOCS Cc 3-25: below 36° C. and solid fat content (SFC) measured according to IUPAC 2.150 mod. (stabilised at 20° C. for 24 h): above 25% by weight at 20° C.; (2) total content of saturated fatty acids measured according to IUPAC 2.301 and 2.304: 40-75% by weight, preferably 45-70% by weight; (3) total content of arachidic and behenic acids: 3-40% by weight, preferably 5-35% by weight, and total content of palmitic and stearic acids: 25-60% by weight, preferably 25-50% by weight, both measured according to IUPAC 2.301 and 2.304; (4) total content of triglycerides having triglyceride composition (TGC) of C56-C60 measured by number of total carbon atoms of constituent fatty acids according to IUPAC 2.323: min. 9% by weight, preferably min. 15% by weight; (5) total content of S2U-type triglycerides: min. 25% by weight, preferably min. 35% by weight, where S=saturated fatty acids and U=unsaturated fatty acids.

Aspects of the invention relate to beverage compositions, including, for example, concentrated and ready-to-drink formulations sweetened with at least one non-nutritive sweetener and further including a long chain fatty acid compound in an amount sufficient to reduce the off-note taste of the non-nutritive sweetener. In certain embodiments, the long chain fatty acid may be one or more of the following: lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, oleic acid, linoleic acid, alpha-linolenic acid, arachidonic acid, eicosapentaenoic acid, docosahexaenoic acid, erucic acid, adipic acid, and palmitic acid. In certain exemplary embodiments, a plurality of different long chain fatty acids are utilized. In another embodiments, the long chain fatty acids comprise both natural and synthetic fatty acids.

Glyceride fat which comprises a mixture of glycerides originating from seed oilswhich have not substantially been subjected to chemical modification,which glycerides are derived from fatty acids which comprise(a) at least 10 wt. % of C18-C24 saturated fatty acids(b) which comprise stearic and / or arachidic and / or behenic acid and / or lignoceric acid(c) oleic and / or linoleic acid, while(d) the ratio of saturated C18-acid / saturated (C20+C22+C24)-acids >=1, preferably >=5, more preferably >=10,which glycerides contain calculated on total fatty acid weight(e) <=5 wt. % of linolenic acid(f) <=5 wt. % of trans fatty acids(g) <=75 wt. %, preferably <=60 wt. % of oleic acid on total fatty acids on position 2 of the glyceride moleculewhich glycerides contain calculated on total glycerides weight(h) >=8 wt. % HOH+HHO triglycerides(i) <=5 wt. % of trisaturated triglycerides(j) which glycerides have a solids content comprising N10>10 and N35<=15and which is characterised in that the ratio of (HOH+HHO) and (HLH+HHL) triglycerides >1, where H is a saturated C18-C24 fatty acid residue, O is an oleic acid residue and L is a linoleic acid residue.

The invention discloses a waste foam concrete insulation material and a preparation method thereof. The waste foam concrete insulation material is characterized by comprising the following components in percentage by mass: 5-15 percent of polystyrene granule with particle size of 2-10mm, 20-50 percent of cement, 15-25 percent of aggregate, 0.2-3 percent of function modifier and 4-7 percent of water, wherein the function modifier comprises a foaming agent, a foam stabilizer, a water reducing agent, an early strength agent and a coagulant, the foaming agent can be sodium dodecyl benzene sulfonate, the foam stabilizer can be arachidic acid or triethanolamine, the water reducing agent can be polycarboxylate or calcium lignosulphonate, the early strength agent can be sodium silicate, and the coagulant can be calcium chloride. The waste foam concrete insulation material is mainly prepared from waste polystyrene foam, and thus the recycling rate of waste can be effectively increased, energy resources are saved and the environment is protected.

A cleaning composition comprises at least one plant extract surfactant with solubility on oil and at least a natural macromolecular surfactant in a mass ratio of 5-50:5-50. The plant extract surfactant comprises tea saponin, saponin extractive, Sapindus saponins, palmitic acid, stearic acid, oleic acid, linoleic acid, arachidic acid and behenic acid; and the natural macromolecular surfactant comprises fatty acid methyl ester sulfonate, FMEE, alkyl polyglycoside, polyglycerol fatty acid ester, modified oil and oleic acid. The invention also provides a wet tissue using the clean composition. The wet tissue provided by the invention is convenient to carry, easy to use and has good cleaning effect.

The invention belongs to the technical field of beverages, and in particular relates to a natural health beverage for drinking. The natural health beverage is prepared from natural radix puerariae, Chinese wolfberry, water and honey through processing, and consists of the water and a natural soaking material consisting of radix puerariae liquid, sugar candies, the Chinese wolfberry and the honey. The natural health beverage is characterized in that the natural soaking material comprises the natural radix puerariae, the Chinese wolfberry and the honey, wherein each component has the following proportion respectively accounting for the total weight of the traditional Chinese medicine soaking material: 50 to 60 percent of the natural radix puerariae, 15 to 20 percent of the Chinese wolfberry, and 30 to 35 percent of the honey; and the radix puerariae is processed into the radix puerariae liquid for standby through steps of cleaning, slicing, grinding with a tool, adding water, stirring the mixture evenly, filtering and depositing. Compared with the prior art, radix puerariae flavone, puerarin, sitosterol and arachidic acid contained in the radix puerariae liquid not only can adjust the human body circulation system, but also can reduce blood pressure, thus the natural health beverage is a perfect health care beverage.

A non-lauric, non-trans, non-temper (Non-LTT) fat composition comprising a fraction obtained from a randomised triglyceride mixture in which min. 90% by weight of the constituent fatty acids are: palmitic (C16:0), stearic (C18:0), arachidic (C20:0) behenic (C22:0), oleic (C18:1) and linoleic (C18:2) acid and the total content of arachidic and behenic acid is 3-40% by weight and the total content of palmitic and stearic acids is 25-60% by weight, said fraction having the following physical and chemical properties: (1) slip melting point measured according to AOCS Cc 3-25: below 36° C. and solid fat content (SFC) measured according to IUPAC 2.150 mod. (stabilised at 20° C. for 24 h): above 25% by weight at 20° C.; (2) total content of saturated fatty acids measured according to IUPAC 2.301 and 2.304: 40-75% by weight, preferably 45-70% by weight; (3) total content of arachidic and behenic acids: 3-40% by weight, preferably 5-35% by weight, and total content of palmitic and stearic acids: 25-60% by weight, preferably 25-50% by weight, both measured according to IUPAC 2.301 and 2.304; (4) total content of triglycerides having triglyceride composition (TGC) of C56-C60 measured by number of total carbon atoms of constituent fatty acids according to IUPAC 2.323: min. 9% by weight, preferably min. 15% by weight; (5) total content of S2U-type triglycerides: min. 25% by weight, preferably min. 35% by weight, where S=saturated fatty acids and U=unsaturated fatty acids.

The invention provides a production method of tea seed blend oil. 76-83% of tea kernel and 18-22% of rape seed by weight are prepared through crude oil preparation, alkali refining, washing, deodorization and winterization filtration to obtain the tea seed blend oil. The friction force and oil yield can be increased during oil expression, and the problems that the friction force is low during oil expression and consequently the oil yield can only reach about 80% and the raw material increasing the friction force is not favorable for increasing the oil yield of tea kernel oil expression are solved. According to the production method of the tea seed blend oil provided by the invention, the tea seed and rape seed are mixed and squeezed, the tea oil cost is lowered, the tea oil has rich nutrition, the content of vitamin E of the obtained tea seed blend oil can reach 350mg / 100g for sure, and the problem that the tea oil has insufficient nutritional ingredients such as vitamin E, arachidic acid and the like is solved; and moreover, the tea seed blend oil is convenient to operate and easy to store and can be stored for a long time.

A vegetable fat composition comprises glycerides, wherein the triglyceride content of the composition is:6 to 20% SSS,5 to less than 20% SUS5 to less than 25% SSU10 to 39% SU2 andat least 20% U3,wherein S is a saturated fatty acid residue having 16 to 24 carbon atoms and U is an unsaturated fatty acid residue having at least 18 carbon atoms and all percentages are by weight based on the total triglycerides present in the composition,the weight ratio SUS / SSU is between 0.5 and 2.0,the weight ratio of (saturated fatty acid residues having 18 to 24 carbon atoms) / (saturated fatty acid residues having 16 carbon atoms) in the total S content of the triglycerides is less than 0.2,and the triglycerides contain less than 3% of arachidic and behenic acid residues based on the total fatty acid residue content of the triglycerides,and wherein the saturated fatty acid residue content of the triglycerides is less than 45% by weight of the total fatty acid residues in the triglycerides. The composition may be used to produce baked products and iced confectionery products.

The invention relates to a detection method for adulterated sesame oil. The method includes: mixing soybean oil, peanut oil and cottonseed oil into sesame oil to form mixed oil samples, measuring the content of myristic acid, linolenic acid, arachidic acid and tetracosanoic acid in the mixed oil samples by gas chromatography so as to obtain the true value of each mixed oil sample fatty acid; conducting near infrared spectrum scanning on the mixed oil samples; dividing the mixed oil samples into a calibration set and a validation set according to certain law based on the mixing proportion, and establishing a quantitative analysis model by means of the functional relationship between the near infrared spectrum information and the measured fatty acid true values of all the mixed oil samples in the calibration set; and carrying out near infrared spectrum scanning on sesame oil needing detection, and comparing the content values of myristic acid, linolenic acid, arachidic acid and tetracosanoic acid in the obtained sesame oil sample with the content specified in sesame oil standards so as to determine whether adulteration exists. The detection method for adulterated sesame oil provided by the invention has the characteristics of fast detection speed and high efficiency, is suitable for analysis of large-batch samples, and has good application prospects.

A fatty acid composition containing linoleic acid, linolenic acid and oleic acid is provided. Also provided is a fatty acid composition containing linoleic acid, linolenic acid and oleic acid, and at least one selected from palmitinic acid, palmitoleic acid, stearic acid, arachidic acid and docosanoic acid. A plant extract and a pharmaceutical preparation are provided, wherein the pharmaceutical preparation contains an active component including at least one of the fatty acid composition, the plant extract and modified products thereof. Also provided is an application of the fatty acid composition, the plant extract and the pharmaceutical preparation in multiple fields. The pharmaceutical preparation may function to repair various wounds and traumas in skin, mucosa, lumina and muscular tissues.

The present invention relates to a novel oil extracted from the seeds of Momordica charantia L., for topical application to a body of mammal and used as anti-inflammatory, anti-arthritic, vasculodilatory and wound healing agent, said oil essentially comprising capric acid 0.7–1.2% by wt., lauric acid 0.6–1% by wt., palmitic acid 42–5.0% by wt., stearic acid 59–62% by wt., oleic acid 13–15% by wt., archid acid 3–5% by wt., linoleic acid 8–10% by wt., and other undetected minor acids 6–8% by wt.; and a process for producing such oil.

The invention discloses preparation methods of arachidic cholic acid and arachidic cholic acid intermediate. The preparation method of the arachidic cholic acid intermediate I provided herein includes the steps: in an organic solvent, performing reductive reaction on arachidic cholic acid intermediate II or II' and a reducing agent to obtain the arachidic cholic acid intermediate I; hydrazine hydrate or methylamine is used as the reducing agent. According to the preparation method, commercially available chemical products such as methyl cholate serve as starting materials, the arachidic cholic acid intermediate I can be prepared only by two steps, the reaction route is short, total yield can reach up to 76%, the purity of the prepared products can reach up to 98.00%, highly toxic products such as sodium azide are omitted, catalytic hydrogenation conditions are avoided, and the preparation method is safe to perform, low in production cost, environmentally friendly and suitable for industrial production.

The invention provides a nutrition food which contains bran, consisting of stabilized red rice bran, selenium rich red rice powder and black sesame powder, the weight proportion of which are respectively 50 to 60 percent, 10 to 20 percent and 25 to 40 percent. The nutrition food can be prepared by mixing the grinded materials or grinding the mixed materials; the nutrition food which contains the bran has a simple processing method, which reserves all ingredients of the material. The invention utilizes abundant various botanical flavonoids, anthocyanin, organic chromium (trivalence) and magnesium which are especially contained in the red rice bran and rich selenium of red rice; especially high content of organic calcium, especially abundant vitamin E and comparatively abundant sesamin, arachidic acid, sesame polyphenol and phytosterol, etc in the black sesame are utilized to be matched with the existing bran nutrition food, thus making up ingredients insufficiency required by the prevention and cure of diabetes mellitus and angiocardiopathy; the invention becomes a nutrition food which contains bran and is especially applicable to be eaten by diabetes mellitus and angiocardiopathy patients.

The invention discloses a Pickering emulsion for improving oxidation stability of dispersed phase grease and a preparation method thereof, and belongs to the technical field of food processing. The Pickering emulsion is composed of a water phase, an oil phase serving as a dispersion phase and lipid colloid particles, the lipid colloid particles comprise glyceride and an antioxidant, and the glyceride is one or more of myristate, stearate, palmitate, linolenic acid and arachidonate. The Pickering emulsion is prepared by using the lipid colloid particle loaded antioxidant as the emulsifier, so that the antioxidant is specifically attached to the two-phase interface of the emulsion, the development of emulsion oxidation is restrained from the source, the oxidation stability of sterol in a dispersion phase is improved, and the action mode of the antioxidant and the sterol oxidation prevention effect are better. Meanwhile, the quality of the emulsion is improved, and the prepared antioxidant emulsion can be applied to the industries of food, health care products, medicines, biological products and cosmetics.

The invention discloses application of nobiletin in preparing a feed additive for improving pork quality. The inventor of the invention finds that the nobiletin can obviously improve the crude protein content of pork, the marbling score, the inosinic acid content and the ratio of margaric acid to arachidic acid to linoleic acid to cis-11-eicosenoic acid and eicosadienoic acid unsaturated fatty acid to total fatty acids, namely can effectively improve the fork quality, without affecting growth performances of pigs, so that the nobiletin is suitable for preparing the feed additive for improving the pork quality.

The invention discloses a methanol gasoline efficient composite additive and a preparation method thereof. The methanol gasoline efficient composite additive is prepared from the following formula ingredients in parts by mass: 5 to 8 parts of diethoxymethane, 6 to 8 parts of [2.2]paracyclophan, 5 to 6 parts of tetraethylenepentamine, 2 to 4 parts of arachidic acid, 6 to 10 parts of tert-butyl methyl ether, 5 to 7 parts of n-heptane, 4 to 6 parts of propanediol butyl ether, 4 to 6 parts of 2,2,4-trimethylpentane, 6 to 8 parts of isooctyl phosphate, 2 to 4 parts of nanometer cobalt ferrite and 3 to 4 parts of coconut diethanolamide. The methanol gasoline efficient composite additive has the advantages that the effects of obviously improving the water resistance of methanol gasoline and obviously reducing the emission of NOX, HC and CO are achieved; meanwhile, the effects of improving the power and reducing oil consumption to a certain degree are also achieved through a special recipe.

The invention provides degradable plant-based lubricating oil. The lubricating oil is prepared from the following raw materials in parts by weight: 50-100 parts of modified vegetable oil, 1-3 parts ofa chelating agent, 2-10 parts of graphite nanopowder, 1-5 parts of calcium aluminate powder, 1-4 parts of a high-efficiency antioxidant, 2-7 parts of stearic acid, 1-5 parts of arachidic acid, 0.5-1part of an antibacterial synergist, 10-20 parts of polyethylene glycol and 1-2 parts of a defoaming agent. The prepared lubricating oil has good degradability, low-temperature performance and good lubricating effect, can adapt to most application occasions, and is greatly improved in rust resistance and lubricating effect, free of great change in friction coefficient at a high temperature and highin stability, and therefore, the lubricating oil has wide application prospects.

The invention relates to a supercritical carbon dioxide cracking technology. A supercritical carbon dioxide cracking liquid system is prepared from the following raw materials of supercritical carbon dioxide, arachidic acid, behenic acid, lignoceric acid, heptadecanoic acid, oleic acid, glycerin, cyclopentane, cyclohexane, dichloromethane, trichloromethane, 1,2-dibromobutane, 1-bromobutane and 2-chloropropane. The supercritical carbon dioxide cracking liquid system has the advantages that the preparation technology is simple, the number of operation procedures is fewer, the cracking cost is low, the effect is good, the sand carrying property is good, the water phase is small, the cracking with small water amount is realized, the damage of water phase to reservoir layer is effectively reduced, and the clay expansion is inhibited to a great degree; the construction time is effectively shortened, and the working intensity is decreased; compared with the traditional cracking type, the liquid residue is greatly reduced, and the environment-friendly and green construction purpose is realized at high efficiency.

The present invention provides a temperature indication coating material, which comprises the following components, by weight, 25-30 parts of lead stearate, 20-25 parts of arachidic acid, 1-2 parts of methyl cellulose, 1-2 parts of ethyl cellulose, 20-30 parts of xylene, and 15-20 parts of n-butyl alcohol. The temperature indication coating material of the present invention has the following technical effect that: when the coating layer is heated to a certain temperature, a color is changed or other phenomena are changed to indicate the temperature and the temperature distribution on the surface of the object.

The invention provides a preparation method of Podocarpus nagi seed oil. Podocarpus nagi seeds are used as raw materials, and the Podocarpus nagi seed oil is prepared through the steps of crushing, steaming, extruding, standing, filtering and the like. The oil yield of the preparation method can reach 90 percent. The Podocarpus nagi seed oil obtained by the preparation method contains rich activesubstances such as oleic acid, linoleic acid, arachidic acid, eicosenoic acid, alpha-linolenic acid, eicosandienoic acid, vitamin E and flavone, wherein the total content of unsaturated fatty acid exceeds 75 percent; the content of total flavone reaches up to 4.23 percent; the content of vitamin E reaches up to 2.11mg / 100g. The Podocarpus nagi seed oil is edible, and has the efficacies of reducingblood pressure and blood fat, softening and expanding blood vessels, improving microcirculation, preventing heart and cerebral vessels, preventing cancer, improving impaired vision and the like.

The present invention is based on the finding that stearin fats, obtainable by dry or solvent fractionation of sunflower high-stearic and high-oleic oils, optionally with seeding with tempered stearin crystals, have a high solid fat content at temperatures higher than 30° C., even higher than cocoa butter or other high saturated tropical fats with a similar disaturated triacylglycerol content due to the presence of disaturated triacylgiycerols rich in stearic acid, and improved melting point due to the presence of arachidic and behenic acids in these disaturated triacylgiycerols, being at the same time healthier that actual fats made from palm, palm kernel and coconut oils, or hydrogenated and trasesterified vegetable oils.

The invention discloses a new technology for efficiently synthesizing Aramchol by utilizing cholic acid and arachidic acid as raw materials. According to the new technology disclosed by the invention,a 3- hydroxyl group of cholic acid is activated by selecting para-butyl benzene sulfonyl chloride in larger steric hindrance and the like, 3alpha-O-para-butyl benzene sulfonyl methyl cholate, chiral3-C can be attacked by an azide group just through a direction against an alkylbenzene sulfonyloxy group of a leaving group during a nucleophilic substitution reaction process of the 3alpha-O-para-butyl benzene sulfonyl methyl cholate and sodium azide, inversion of 3-C configuration of a product-3-azido methyl cholate is ensured, and a firm foundation is laid for controlling the optical purity ofa final product-Aramchol.

The invention discloses antibacterial plastics for food and a preparation method thereof. The antibacterial plastics for the food is prepared from the following raw materials in parts by weight: 11 to 26 parts of PP, 19 to 43 parts of HDPE, 12 to 25 parts of CPAE, 4 to 12 parts of polyethylene wax powder, 8 to 13 parts of dolomite powder, 3 to 14 parts of silk, 2.3 to 4.6 parts of an arachidic acid, 1 to 2.5 parts of amino modified silicone, 0.1 to 0.5 part of nano silver, 6 to 8 parts of peppermint oil, 8 to 12 parts of o-phenylphenol, 4 to 11 parts of stearic acid zinc, 2 to 3 parts of magnesium aluminosilicate, 3.2 to 8.6 parts of silicon dioxide powder, 5 to 8 parts of flue-cured tobacco powder and 2 to 7 parts of animal oil and fat. The raw materials are compounded to synergistically act, so that the antibacterial plastics for the food has high temperature resistance, and is unlikely to be deformed; the antibacterial plastics for the food has a certain antibacterial effect, and the health of a user can be better protected.

A toner for developing an electrostatic latent image, the toner includes, a toner parent particle containing a binder resin, the binder resin including a crystalline resin and a hybrid resin, the hybrid resin having a main chain and a side chain, either one of or both of the main chain and the side chain including a unit derived from a crystal nucleating agent, and the crystal nucleating agent being one or more compounds selected from the group consisting of arachidyl alcohol, behenyl alcohol, 1-tetracosanol, 1-hexacosanol, octacosanol, palmitic acid, margaric acid, stearic acid, arachidic acid, behenic acid, and lignoceric acid.

The invention relates to the technical field of washing products. The invention provides weakly-alkaline foam transparent liquid soap. The liquid soap comprises the following raw materials in percentage by weight: 0.5 to 25 percent of fatty acid; 0.5 to 2 percent of foaming agent; 2 to 26 percent of a surfactant; 0.5 to 9 percent of a calcium soap dispersion antioxidant; 0.5 to 5 percent of a thickening agent; 0.001 to 0.1 percent of a preservative and 0-0.5% essence, with the balance being water, wherein the fatty acid is at least one of linoleic acid and arachidic acid; the foaming agent isat least one of alkane and a fluorocarbon compound. The liquid soap comprises the following raw materials in percentage by weight: 0.5 to 25 percent of arachidic acid, 0.5 to 2 percent of the fluorocarbon compound, 2 to 26 percent of the surfactant, 0.5 to 9 percent of the antioxidant, 0.5 to 5 percent of the thickener, 0.001 to 0.1 percent of the preservative, and 0 to 0.5 percent of the essence,with the balance being water, wherein the surfactant is soap grains, and the antioxidant is at least one of butyl hydroxyanisole and butylated hydroxytoluene. The liquid soap has the advantages of nophosphate and no pollution to the environment.

The invention discloses rhizoma polygonati and peanut yogurt and a preparation method thereof. The rhizoma polygonati and peanut yogurt is prepared from the following raw materials in parts by weight: 20 to 30 parts of pure milk, 5 to 9 parts of milk powder, 20 to 30 parts of peanut juice, 10 to 20 parts of rhizoma polygonati slurry, 2 to 4 parts of brown sugar, 0.5 to 1 part of gelatin and 0.4 to 0.6 part of a fermenting agent. The preparation method of the rhizoma polygonati and peanut yogurt comprises the following steps of: dissolving, filtering, homogenizing, sterilizing, cooling, fermenting and cooling. The rhizoma polygonati and peanut yogurt finished product has a fine and smooth tissue, moderate sour and sweet taste and abundant nutrients; peanuts and rhizoma polygonati are added so that the rhizoma polygonati and peanut yogurt is rich in protein, polypeptide and active polysaccharide and also has the effects of lowering blood lipid, resisting ageing, lowering blood glucose, regulating the immunity and the like, and is healthy food with certain development potential.

The invention discloses a molecular marker relevant to yield and quality of zea mays grains. The molecular marker (chr3.S_215018483) disclosed by the invention corresponds to the 189th nucleotide in asequence 3 of a sequence table in a zea mays genome, and is T or C. In zea mays, the grain length and the 100-grain weight of the TT genotype zea mays grains of which the chr3.S_215018483 of two chromosomes is T are both lower than those of CC genotype zea mays of which the chr3.S_215018483 of two chromosomes is C, the arachidic acid content of the TT genotype zea mays grains is higher than thatof the CC genotype zea mays grains, and the linoleic acid content of the TT genotype zea mays grains is lower than that of the CC genotype zea mays grains. During breeding, the CC genotype zea mays can be selected as parents for breeding, so that the grain relevant characters including the grain length and the 100-grain weight are increased, and the linoleic acid content of the zea mays grains isincreased.

The invention relates to an external medicine for treating psoriasis. The external medicine comprises linoleic acid, oleic acid, palmitic acid, stearic acid, linolenic acid, arachidic acid, morphine, codeine and papaverine. The external medicine has the advantages of stable treatment effect, thorough treatment, no side effects, high application values and high social values when the medicine is used to treat psoriasis. The invention also provides a preparation method of the external medicine. The external medicine is prepared through mixing and heating platn oil and poppy shell. The method has the advantages of simplicity, easy operation, abundant and easily available raw materials, and low cost, and medicine prepared through regulating the raw material ratio, the heating temperature and the heating time has stable and thorough curative effects and high practicality.