218 results about "Stearin" patented technology

A trans free non hydrogenated high C-16 type palm fat suitable for the manufacture of trans free non hydrogenated hard structural fat that is being suitable for use in the manufacture of low SAFA (Saturated Fatty Acid) poly / mono unsaturated margarine and spreads and shortening and fat blends incorporating such hard Structural fat. The Structural fat is made from selectively fractionated non-hydrogenated high melting palm oil fraction with a C-16 fatty acid residue of at least 70%, which is subjected to chemical random interesterification using alkaline metal catalyst such as sodium methoxide / sodium methylate, with a dry fractionated non hydrogenated hard palm kernel stearin fraction. The structural fat that is produced has high yield ratios that can be economically and commercially incorporated in the oil blends for the manufacture of trans free margarine / spreads / shortening as well as other plastic W / O emulsions. Also described is a process for the manufacturing such structural fat as well as hard palm fraction including process for the manufacture of extra hard trans free structural fat by panning and pressing of above structural fat.

A process for the production of a composition comprising 1,3-dioleoyl-2-palmitoyl glyceride (OPO) comprises: providing one or more palm oil stearin fractions comprising tripalmitoyl glyceride and having an iodine value between about 18 and about 40; interesterifying the one or more palm oil stearin fractions to form a randomly interesterified palm oil stearin; subjecting the randomly interesterified palm oil stearin to enzymic transesterification with oleic acid or a non-glyceride ester thereof using an enzyme having selectivity for the 1- and 3- positions of a glyceride; and separating palmitic acid or palmitic non-glyceride esters from the product obtained in (iii) to form a composition comprising OPO glyceride.

The invention relates to an anti-rust extreme pressure lithium lubricating grease composition and a preparation method thereof. The composition is prepared from 5.5%-12.5% of thickening agents, 72.8%-91.3% of base oil, 0.5%-3.8% of extreme pressure anti-wear agents, 0.28%-1.25% of antioxidants and 0.02%-1.05% of anti-rust anti-corrosion agents, wherein the base oil is high-viscosity mineral oil. The preparation method of the composition comprises the steps that one third of the base oil and 12-hydroxy stearin or a mixture of 12-hydroxy stearin and stearic acid are heated to the temperature ranging from 60 DEG C to 80 DEG C, a lithium hydroxide solution is added, the temperature is raised to range from 180 DEG C to 220 DEG C after a reaction is completed, one third of quenching oil is added, the extreme pressure anti-wear agents, the anti-rust anti-corrosion agents and the rest of the base oil are added after cooling is conducted, and the composition is prepared after grounding is conducted. The novel lubricating grease containing the extreme pressure components and the anti-rust anti-corrosion components has the excellent extreme pressure property and anti-corrosion property and can be widely applied to severer environment conditions with a medium or heavy load and water.

The invention provides morinda citrifolia enzyme skin whitening sunscreen cream and a preparation method thereof. The morinda citrifolia enzyme skin whitening sunscreen cream, in percentage by weight, comprises the following components: stearin, hexadecyl / octadecyl natural fatty alcohol, caprylic / capric triglyceride, isononyl isononanoate, jojoba oil, polydimethylsiloxane, sterol ester, vitamin E, methylparaben, propylparaben, glycerol, an amino acid moisturizer, allantoin, lauryl alcohol ether, morinda citrifolia enzyme and deionized water. The morinda citrifolia enzyme skin whitening sunscreen cream provided by the invention has obvious free radical scavenging capability, can effectively inhibit growth of melanin and has good ultraviolet absorption effect and realizes skin whitening, sunscreen and skin protection effects, the preparation method is simple and easy to operate, and production cost is relatively low.

The invention pertains to the field of feed formula design and feed processing technique, specifically relating to an all-wheat type growing and fattening pig diet and its processing technique. The inventive all-wheat type growing and fattening pig diet is composed of the following components in weight percent: 50-70 parts of all-wheat, 4-10 parts of rice bran, 10-25 parts of bean pulp, 1-5 parts of peanut meal, 0.2-1.0 parts of composite vitamins, 0.2-1.0 parts of composite trace elements, and 0.1-0.4 parts of wheat-type-specific enzyme. The processing technique adds a maturing step between the modulation step and the granulation step. By adoption of the growing and fattening pig diet, the invention has low feed cost, faster fatten pigs growth rate, shortened breeding cycle, improved fatten pigs growing production efficiency, greatly improved pig shape and carcass quality, good palatability of the all-wheat type pig diet, good pork quality (stearin meat); and the invention solves the feed resource tensioning problem to some extent.

The invention discloses a process capable of simultaneously producing and separating high-purity EPA (eicosapentaenoic acid) ethyl ester and high-purity DHA (docosahexaenoic acid) ethyl ester. With crude fish oil as raw material, supercritical fluid extraction, base catalysis and esterification, supercritical counter-current extraction, urea clathration and supercritical rectification are carried out, and EPA ethyl ester and DHA ethyl ester with the purity being more than 90% are obtained respectively. By adopting the process disclosed by the invention, the EPA ethyl ester and the DHA ethyl ester can be effectively purified and separated, and the contents of the obtained EPA ethyl ester and DHA ethyl ester are respectively more than 90%; and no residual solvent exists in the product, preoxidation value is less than 2meq / kg, anisidine value is less than 10, acid value is less than 0.5mgKOH / g, polymer is less than 0.2%, no stearin is contained, and the defects of the prior art that cost is high, process is complex, long time is consumed and safety is difficult to guarantee can be overcome.

The invention discloses an amino acid cleansing cream and a preparation method thereof. The amino acid cleansing cream comprises the following components in percent by weight: 3-8 percent of glycerol, 0.05-0.2 percent of hydroxyethylcellulose, 5-13 percent of propylene glycol, 25-30 percent of sodium lauroyl glutamate, 5-8 percent of sodium cocoyl glutamate, 0.5-1.5 percent of ethal-octadeca-composite fatty alcohol, 0-2 percent of ethylene glycol distearate, 0.2-0.6 percent of cetearyl alcohol ether (20), 0.5-1.5 percent of cocoaminopropyl dimethyl betaine, 0.5-1.5 percent of cetearyl alcoholether-60 myristyl glycol, 1-3 percent of acrylate / polyoxyethylene-20 stearin alcohol ether methacrylate copolymer, 0.4-0.8 percent of citric acid, 0.1-0.2 percent of diazolidiny urea, 0.10-0.15 percent of methyl phydroxybenzoate and the balance of deionized water. the amino acid cleansing cream has better stability and solid content of sodium lauroyl glutamate of more than or equal to 25 percent,and can create a comfortable and clear microenvironment for healthy growth and metabolism for skin cells on the face.

The invention relates to a preparation method of fat gel capable of loading carotene. The method comprises the steps of adding 8-12% of food-grade ceramide to maize oil, performing heating at 85 DEG C, stirring for 30min at a revolution speed of 200-400rPm, allowing ceramide to be uniformly dissolved in the oil, adding 0.5-5wt% of carotene to a mixture, continuing to react for 10-15min, cooling to 5-25 DEG C at a cooling rate of 1-10 DEG C / min, storing for 24h at a constant temperature, and obtaining the fat gel capable of highly loading the carotene. The preparation method is simple, mild in condition and low in cost; the obtained fat gel is stable in property and good in oxidation resistance; a load rate of the carotene reaches above 90%; and the fat gel can serve as a high-quality carotene carrying system and can be compounded with other stearin for preparing food shaping fat with high nutritive value.

The invention relates to an environment-friendly rubber belt, which comprises a top rubber layer, a buffer layer, a tensile layer and a bottom rubber layer, wherein the top rubber layer and the bottom rubber layer contain the following components in parts by weight: 100 parts of chloroprene rubber, 20-50 parts of carbon black, 15-30 parts of short fibers, 4-15 parts of active magnesium oxide, 2-4 parts of anti-aging agent, 2-10 parts of active zinc oxide, 0.1-2 parts of stearin, 1-5 parts of dispersant and 1-15 parts of rubber plasticizer; and the rubber layer contains the following components in parts by weight: 100 parts of chloroprene rubber, 20-80 parts of carbon black, 4-15 parts of active magnesium oxide, 2-4 parts of anti-aging agent, 2-8 parts of active zinc oxide, 0.1-2 parts of stearin, 1-5 parts of dispersant and 1-20 parts of rubber plasticizer. The environment-friendly rubber belt has the superior performance such as low cost, environmental friendliness, aging resistance, temperature resistance, fatigue resistance and ozone resistance.

The invention discloses a papermaking additive composition and a preparation method thereof. The papermaking additive composition is prepared from the following components in parts by weight: 30-35 parts of polyoxypropyl glyceryl ether, 20-30 parts of stearin, 20-30 parts of glass fibers, 10-15 parts of calcium carbonate whisker, 10-15 parts of polyhexamethylene guanidine hydrochloride, 3-5 parts of 4,4'-diphenylmethane-diisocyanate and 2-5 parts of sodium hydrogen disulfate. According to the papermaking additive composition, bad bubbles in the paper pulp preparation process can be eliminated, and pulp can be well dispersed, so that the paper has the excellent water-retaining property, antibacterial property and mechanical strength and can be preserved for a long time.

An amylose preparation method is to mix the natural starch which particle size is 1-9 mu m, starch debranching enzyme solution which weight content is from 1% to 10%, and plasticizer component together, then continuously react and extrude from the screw-type reactive equipment under pH of 4.0-6.5 and temperature of 40deg.C-105deg.C. The ratio of different materials is 40-70 weight share of natural starch, 30-60 weight share of enzyme solution, 2-10 weight share of plasticizer component. Among them, the plasticizer component includes at least one of polyalcohol mixture containing alcohols glycerin, glycol, butanediol, sorbitol, xylitol, or any one of acid amides containing formamide, caprolactam, or any one of carbamide and stearin.

A process for the production of a composition comprising 1,3-dioleoyl-2-palmitoyl glyceride (OPO) comprises: providing one or more palm oil stearin fractions comprising tripalmitoyl glyceride and having an iodine value between about 18 and about 40; interesterifying the one or more palm oil stearin fractions to form a randomly interesterified palm oil stearin; subjecting the randomly interesterified palm oil stearin to enzymic transesterification with oleic acid or a non-glyceride ester thereof using an enzyme having selectivity for the 1- and 3-positions of a glyceride; and separating palmitic acid or palmitic non-glyceride esters from the product obtained in (iii) to form a composition comprising OPO glyceride.

The invention relates to the technical field of household paper, and particularly relates to super-soft super-tough household paper and a production method thereof. The household paper is prepared from the following raw materials in parts by weight: 80-120 parts of pulp, 5-10 parts of an oiling agent, 4-8 parts of polyol, 3-7 parts of non-ionic surfactant, 3-7 parts of a softening agent, 3-7 parts of reinforcement fibers, 1-5 parts of a dry strength agent and 1-5 parts of a wet strength agent, wherein the softening agent is mixture of stearin, diethylenetriamine and dimethyl sulfate in a weight ratio of (1.2-1.8):1:(1.6-2.4). The production method comprises the steps of pulping, removing sands, screening the pulp, spraying the pulp, dehydrating, drying, peeling, rolling and packaging. The household paper has good softness, good toughness, good dry and wet strength, environmental friendliness and low cost; and the production method is simple in process, convenient to operate and control, stable in quality, high in production efficiency, energy-saving and environment-friendly.

The invention discloses a qiupu crab cream meat bun and a preparation method thereof. The qiupu crab cream meat bun is mainly prepared by mixing raw materials including flour, crab cream, qiupu flower salmon meat, side pork, pigskin jelly, farm egg, lard stearin, agaric, Chinese parsley, chopped green onion, bruised ginger, white sugar, yellow wine, sweet potato starch, sesame oil, spiced vinegar, soy sauce, refined salt, ground pepper, cheese, red-yolk salted duck egg yolk and gourmet powder according to certain parts by weight. The qiupu crab cream meat bun disclosed by the invention is unique in the formula of stuffing, is delicate and delicious in meat quality due to the qiupu flower salmon meat, is unique in mouth feel since the qiupu flower salmon meat is added into the stuffing of the qiupu crab cream meat bun, and is higher in dietary fiber and vitamins simultaneously due to the Chinese parsley; and the fat, the vitamins and the cellulose are evenly matched with one another, so that the qiupu crab cream meat bun is good in mouth feel and abundant in nutrition, thereby being edible for the man, the woman, the young and the old.

The invention belongs to the chemical field and relates to a multifunctional assistant for plastic processing and a preparation method of the multifunctional assistant. The multifunctional assistant HGP-107 for the plastic processing comprises the following ingredients by weight part: 30-50 parts of beta-(3, 5-ditertbutyl-4-hydroxyl phenyl) octadecyl propionate (anti oxidizer 1076), 15-40 parts of tri (2, 4-ditertbutyl phenyl) phosphate (anti oxidizer 168), 30-50 parts of magnesium stearate and 1-10 parts of distillation stearin. In the multifunctional assistant, various kinds of assistants can be compounded with specific ratio, the compatibility of plastics is enhanced, the stability in the plastic processing procedure is enhanced, the oxidation resistance of plastic products is improved, and the remarkable antistatic and whitening effect and the like can be realized.

The invention discloses the preparation of a kind of starch grafting polyacrylamide (PAM) and its ramification, belonging to the preparation technology of water-soluble macromolecule materials. The method includes following process: add dehydrated sorbitol oleate, dehydrated sorbitol stearin and octylphenol polyoxyethylene ether (OPEO) into paraffin oil according to weight proportion, to prepare the continuous phase of emulsifier oil solution; mix starch and acrylamide (AM) or starch and AM and its ramification according to weight proportion, and dissolve them with water, to prepare the dispersed phase of solid shares of solution; add ammonium persulfate and urea, and add the dispersed phase into the continuous phase, then adjust pH by adding sodium hydroxide or ammonia; under nitrogen protection, mill to initiate polymerization at 5 - 30 Deg. C; then increase temperature to 45 - 60 Deg. C, react when keep the temperature; finally through hydrolyzing and purifying to prepare the inverse rubber latex of starch stem grafting polyacrylamide (PAM) and its ramification. The advantages of the invention are: the molecular structure of the prepared product has reasonable components, high and adjustable molecular weight; it's easy to operate, and has high conversion rate; the product has good dispersivity and high dissolving speed.

The invention relates to a cation modified sesbania gum surface sizing agent and a preparation method thereof. The preparation method of the cation modified sesbania gum surface sizing agent comprises the following steps of: adding 5-20 parts of sesbania gum, 2-16 parts of polyoxyethylene, 0.2-20 parts of polyethylene glycol and 4-16 parts of cationic monomer to 800kg-900kg of aqueous solution; adding acid to the solution to regulate the pH to 3-4; regulating the temperature to 80 DEG C to 90 DEG C and reacting for 1 hour to 3 hours; adding 2-14 parts of cross-linking agent, 0.1-10 parts of initiator and 1-10 parts of stearin gum to the solution prepared in the step 1; adding the acid to regulate the pH of the solution to 3-4; regulating the temperature to 80 DEG C to 90 DEG C and reacting for 1 hour to 3 hours; and 100 parts of adding aluminum sulfate aqueous solution with concentration of 40%-80%, and stirring and discharging to obtain the cation modified sesbania gum surface sizing agent. The modified sesbania gum surface sizing agent has the beneficial effects that the sizing agent prepared by carrying out soluble emulsion cationization to vegetable gelatin and synthetic macromolecule compound and carrying out cross-linking grafting copolymerization has the function of reacting with the fiber to form a covalent bond; moreover, the curing time during the sizing process can be shortened, and the water resistance and strength of the paper are obviously improved.

The invention discloses a preparation method of beewax-based plastic fat, belongs to the field of combination of a supramolecular chemistry technology and a plastic fat preparation technology for food, and in particular relates to a preparation method of low-saturation / low trans-fatty acid plastic fat. The method comprises the steps of: adding 3-16 percent of food-grade beewax which is benefit for human body into pure-liquid state low erucic acid colza oil ( or a oil-water mixture in a certain proportion); uniformly dissolving gel into grease under the conditions of heating at 80-100 DEG C, stirring at a rotation speed of 100-1,000rpm and homogenizing at 10-50MP; and cooling to a room temperature or a lower temperature at a cooling rate of 1-20 DEG C / min to obtain required plastic fat. The preparation method is simple, mild in conditions and low in cost; the content of the obtained grease saturated fatty acid is lower than 8 percent; the content of the trans-fatty acid is lower than 0.4 percent; and the physico-chemical property of the plastic fat is superior to vegetable shortening on the market, so that the plastic fat for food with high quality can be prepared individually or in a mode of compounding with other stearins.

The invention relates to a nasographic capsule. The traditional Chinese medicinal materials for preparing the nasographic capsule are: 300 to 450 grams of fried fructus xanthil, 100 to 150 grams of lily magnolia, 200 to 300 grams of angelicas dahurica, 100 to 150 grams of centipede, 300 to 450 grams of peppermint, 300 to 450 grams of radix scutellariae and 100 to 150 grams of liquorice. The auxiliary material for preparing the nasographic capsule comprises at least one of the followings: 3 to 10 percent of methylcellulose, 5 to 15 percent of ethylcellulose, 3 to 6 percent of sodium carboxymethyl cellulose, adequate hydroxypropyl methylcellulose, 3 to 20 percent of microcrystalline cellulose, 5 to 20 percent of dextrin, 3 to 15 percent of calcium hydrophosphate, 5 to 20 percent of starch, 0.25 to 2.0 percent of magnesium stearate, 0.5 to 2.0 percent of stearin, 1 to 3 percent of calcium phosphate, 3 to 6 percent of talcum powder, 1 to 3 percent of colloidal silica and adequate ethanol, wherein, the percentage of the auxiliary material is the weight percentage of the made medicine. The invention makes the prior oral pill into the capsule after technical study, thereby the nasographic capsule not only gives play to the function of the prior prescription medicinal odour but also improves the bioavailability; and the nasographic capsule has the characteristics that: the nasographic capsule is convenient in taking, reduces the peculiar smell for directly taking the pill, and is suitable for wide medicated crowd, etc.

The invention discloses a system device for extracting waste-swill-cooked dirty oil and an extraction method. The system device comprises a recycle pool, a sedimentation measuring tank, a hydrolyzer, a drain sump, a distillation tower system, a fatty acid material tank, a soap powder compounding tank, an aging tank, a high pressure pump, a spray tower, a heating and vacuum system, a mixed cylinder and a finished product warehouse; and the method comprises digestion, sedimentation, hydrolyzation, oil-water separation, dehydration, distillation, condensation, soap power compounding, aging, airflow drying, mixing and packaging. Therefore, the environment is protected and improved, wastes of high energy consumption, high pollution and resources industries are utilized efficiently and comprehensively, the pollutant emission is reduced, swill-cooked dirty oil is prevented from flowing back onto dinner tables to harm human health, harmful wastes harming environment and human life safety are turned into valuable things; and stearin pitch is used as raw materials of sand consolidation agent and rubber accelerator, the soap powder is applied as raw materials of washing powder or soap, and the system device and the extraction method are widely used in recycle industry of swill-cooked dirty oil.

The invention relates to the technical field of food, in particular to high-crisping property baking grease and a preparation method thereof. The high-crisping property baking grease is prepared fromthe following components in parts by weight: 65 to 80 percent of base oil, 0.5 to 1.0 percent of phospholipid, 0.8 to 1.5 percent of glyceryl monostearate, 0 to 3 percent of table salt, 0 to 3 percentof a whole milk powder, 0 to 3 percent of liquid whey, 0 to 1 percent of essence, 0 to 0.1 percent of beta-carotene and 7.5 to 23 percent of water; the base oil comprises palm oil palmitin, first transesterification grease and second transesterification grease; the first transesterification grease and the second transesterification grease are obtained by performing transesterification on one or more of the palm oil palmitin, palm oil stearin, coconut oil or beef tallow. The baking grease has the advantages of high crisping property, low saturated acid, low trans acid and the like.

The invention discloses a curing agent material formula of an environment-friendly copper-clad plate without halogen or antimony. The copper-clad plate comprises two conductor layers, at least three insulation dielectric layers arranged between the two conductor layers, wherein the insulation dielectric layers include ethoxyline resin, curing agent, curing accelerator and padding, the curing agent is composed of stearin, diphenylmethane-4, 4'-diisocyanate, sodium hydroxide, triethanolamine, oxidizing agent, polyacrylamide, chitosan, water, trimethylolpropane and calcium lignosulphonate. According to the curing agent material formula of the environmentally friendly copper-clad plate without halogen or antimony, diphenylmethane-4, 4'-diisocyanate is adopted to replace toluene diisocynate in the traditional curing agents, on the one hand, the product price is more preponderant, on the other hand, toxicity is reduced, and accordingly environment-friendly performance of the product curing agent is improved; by adding chitosan, the flexibility of the curing agent finished product is improved, and the problem of bad toughness of the traditional curing agents is solved; by adding trimethylolpropane and calcium lignosulphonate, curing effect is enhanced.

The invention discloses a manufacturing method for a chestnut paste healthcare cake, and belongs to the field of food processing. The manufacturing method is characterized in that raw materials of 15 kg of high gluten flour, 3 kg of potato starch, 8 kg of butter, 350 g of egg white, 35 kg of chestnut kernels, 2.5 kg of maltose, 16 kg of saccharose, 2 kg of lard stearin and 3 kg of plum blossoms are adopted, and the processing technology of the chestnut paste healthcare cake includes the steps of raw material processing, pulp grinding, stuffing manufacturing, dough kneading, crisp manufacturing, stuffing wrapping, baking, packaging and finished product forming. The manufacturing method has the advantages that the product is slightly yellow in color, crispy, tasty, fine and smooth in taste and rich in aroma and has the crispy flavor of chestnuts. The product is delicious, tasty, rich in nutrition and beneficial to improving the immunity of the human body, has the special curative effects on preventing osteoporosis, arthralgia and myalgia and has the effects of delaying senescence, prolonging life and preventing cancers. The chestnut paste healthcare cake is convenient to eat and simple in operation and is green food which is delicious, tasty and rich in nutrition.

A cocoa butter improver (CBI) is a specific heat-resistant cocoa butter equivalent (CBE), wherein glycerol-1,3-distearate-2-oleate (SOS) having higher melting point constitutes the main component in the triglyceride composition of the CBI. In the invention, the biosynthesis of the cocoa butter improver comprises the following steps: firstly, carrying out transesterification reaction preferably among SOS with a high content, and glycerol-1,2-distearate-3-oleate (SSO) and tri-stearin (SSS) with a low content in the presence of 1,3-specific lipases as a catalyst under the optimized conditions of the transesterification reaction; carrying out molecular distillation on the product obtained from the optimized transesterification reaction to remove fatty acid from the product, wherein the optimization is carried out by targeting on the heavy-phase yield and acid value; and carrying out wet fractionation on the deacidified product by using acetone, n-hexane and other solvents, wherein the conditions of fractionation are optimized by targeting on the yield of SOS-rich stearin. A large amount of stearic acid (or low-grade alcohol ester thereof) obtained through the removal of fatty acid in the molecular distillation and the palmitic components of SOO and OOO as the main triglyceride composition obtained through the follow-up fractionation are recyclable as the raw materials for the transesterification, thus improving the utilization rate of raw materials. The CBI prepared through the biosynthesis of the invention is applicable as the raw material for the production of heat-resistant chocolate in the food industry.

The invention relates to a feed for laying hens. The feed comprises corn flour, bean pulp, rock flour, snail flour, corn gluten meal, lard stearin, calcium hydrogen phosphate, feather protein powder, a laying hen premix, medical stone and sodium chloride. The feed for laying hens disclosed by the invention can improve laying rate and prolong laying peak of laying hen; and meanwhile, by adding traditional Chinese medicine ingredients to main materials, the feed can take effects of boosting immunity and reducing death and culling rate.

The invention discloses graphene superconducting far infrared heating paste. The graphene superconducting far infrared heating paste is prepared from, by weight, 50-70 parts of graphene, 20-30 parts of graphite, 20-30 parts of organic carrier, 12-16 parts of synthetic resin, 12-16 parts of magnetic rubber, 12-16 parts of metal mixed powder, 5-9 parts of environment-friendly high-temperature-resistant conductive binder, 3-5 parts of anticorrosion agent, 3-5 parts of antistatic agent, 3-5 parts of catalyst and 1-3 parts of dihydroxyethyl dihydroxypropyl stearin ammonium chloride. The graphene serves as the raw material, and the graphite is properly added, so that the heating paste is good in comprehensive performance, the resistance is moderate, the heating power is high, the conductivity ofthe heating paste can be effectively enhanced, and therefore the service life of the paste is guaranteed.

The invention discloses a preparation method of 1-palmitate-2-oleate-3-stearate triglyceride fat, and belongs to the field of oil processing. The preparation method mainly comprises the following steps: uniformly mixing 1,3-palmitate-2-oleate triglyceride (POP) fat and 1,3-stearate-2 oleate triglyceride (StOSt) fat in a solvent; adding 0.1-1.0% of specific lipase; implementing a reaction at 40-80DEG C for 1-6h and recovering the solvent through evaporating; conducting fractionation on a reaction product via a polar solvent, so that stearin is obtained; and recovering the solvent through evaporating, so that the target product, namely the 1-palmitate-2-oleate-3-stearate triglyceride fat (POSt), is obtained. The prepared POSt fat, when used for making chocolate, can obviously improve a frost-resisting performance of the finished product (the chocolate). With the application of the method provided by the invention, problems in lack of POSt and a preparation technology thereof at presentcan be solved; and the preparation method is sufficient in raw material supply and is economic and efficient in follow-up purification technology, and the preparation method has an industrialization prospect.