88 results about "Octadecenoic Acid" patented technology

The invention discloses a gamma-Fe2O3 / SiO2 nano-grade composite material preparation method, and nano-grade composite material particles. The method comprises the steps that: a mixed liquid of octadecenoic acid and octyl ether with a volume ratio of 1:6-15 is heated; a Fe(CO)5 octyl ether solution is added, wherein a molar ratio of Fe(CO)5 to octadecenoic acid is 0.03-0.3:1; the mixture is heated, and a reaction is carried out, such that Fe2O3 nano-grade particles are obtained; the particles are dispersed in cyclohexane; gamma-Fe2O3 nano-grade particles dispersed in cyclohexane are mixed with a sodium dodecyl sulfate water solution and cyclohexane; an ultrasonic treatment is carried out, such that gamma-Fe2O3 clusters are assembled; the clusters are dispersed in a water phase; the dispersed gamma-Fe2O3 clusters are dissolved in a mixed solution of deionized water, ammonia water, and anhydrous ethanol; and tetraethyl orthosilicate is added, such that the gamma-Fe2O3 / SiO2 nano-grade composite material is obtained. A molar ratio of tetraethyl orthosilicate to Fe(CO)5 is 3-10:1. The gamma-Fe2O3 / SiO2 nano-grade composite material particles provided by the invention have kiwi shapes, and have strong magnetism response and fast solid-liquid separation effect. Therefore, a magnetic separation material can be provided in fields such as water treatment, catalytic oxidation, and the like.

The invention provides a low-temperature fast-dry amino automobile chassis paint and a production method thereof, wherein, the paint consists of B-12 resin, medium pigment carbon black, compound ferrotitanium powder, ultra-fine mica powder, an auxiliary agent, sealed paratoluenesulfonic acid BYK-450 and BR-167 amino resin; B-12 resin is prepared by octadecenoic acid, benzoic acid, pentaerythritol, phthalic anhydride, dimethylol propionic acid, and trimethyl benzene. The automobile chassis paint adopts special B-12 resin synthetic route to lead the polymer chain to have more active functional groups simultaneously to be matched with the blocked paratoluenesulfonic acid, reduces the baking temperature of the existing amino paint from 130 DEG C to 90 DEG C and reduces the curing film-forming time from 1 hour to half an hour. As the paint film has high crosslinking density, compound ferrotitanium powder and squamous anti-rust pigment are matched for use, and the polyaniline is used for improving the anticorrosive potentials, thus leading the salt spray resistance of the paint to achieve 150 hours and improving the protection performance and the coating efficiency.

The invention discloses a cow feed for increasing healthcare fatty acid and reducing stearic acid in milk and a feeding method, relating to a functional animal-source feed and a feeding method, and aiming at solving the technical problems that the existing method of adding flaxseeds to the cow feed has a bad effect on increasing (omega)3 polyunsaturated fatty acid in milk, and the average intake of daily ration of the cow is reduced by excessive addition of the flaxseeds. The cow milk is obtained by adding fish oil into the daily ration of cow and mixing uniformly. By feeding the cow with the feed, the content of cis-9 and trans-11 conjugated linoleic acid in the produced milk is 1.07-1.42%, the content of eicosapentaenoic acid is 0.05-0.07%, the content of docosahexaenoic acid is 0.04-0.06%, the content of trans-11 octadecenoic acid is 6.75-11.77%, and the content of stearic acid is 8.56-12.03%. The cow feed can be used for producing functional milk.

The invention discloses a mixed fatty acid modified smell eliminating matt alkyd resin and a preparation method thereof. The mixed fatty acid modified smell eliminating matt alkyd resin comprises 6-10wt% of isocaprylic acid, 3-5wt% of isononanoic acid, 9-15wt% of oleic acid, 20-30wt% of polybasic acid anhydride, 18-25wt% of polyol, 25-33wt% of a solvent and 0.01-0.5wt% of an assistant. Low smell oleic acid with the oleic acid content of 50% or more is reasonably matched with isocaprylic acid or isononanoic acid in the above formula. Polyester produced in the invention has a high vitrification point, very good hardness, certain flexibility, good levelability and scratch resistance; and the dryness becomes better with the rising of the vitrification point, and a matt coating prepared by using the polyester as a base material can be coated multiple times to form a coat with extremely good transparency, good delustring effect and extremely good solvent release property, can be used as high grade smell eliminating matt alkyd resin with excellent performances, and can be widely used in the production of high grade furniture.

The embodiment of the invention discloses a quantum dot and a preparation method thereof. The method comprises the following steps of: adding sulfur powder into 1-octadecenoic acid, and mixing to obtain sulfur precursor solution; adding a Zn salt, an M salt, an In salt and an organic encapsulant into 1-octadecenoic acid, and heating to obtain transparent solution, wherein the M salt is a Cu salt or an Ag salt; and heating the transparent solution in the presence of a protective gas, and mixing the heated transparent solution and the sulfur precursor solution to react to obtain the ZnxMyInS1.5<+>x<+>0.5y quantum dot. In the preparation method provided by the invention, the synthesis condition is simple. The quantum dot prepared by the invention does not contain highlytoxic elements, such as Cd, Pb, Hg, As and the like, and has relatively high biocompatibility. In addition, the quantum dot prepared by the method has high fluorescence intensity, so that the quantum dot can serve as a fluorescent probe which is combined with biomolecules, can be applied to living cell image formation, tracking and monitoring of protein, viruses or enzymes, DNA analysis, DNA biologic sensing, disease diagnosis and the like.

A medicine for treating various diseases such as women's climacteric syndrome, osteoporosis, mental depression, premature ovarian failure, premenstrual tension syndrome, hyperthyroidism, male and female infertility, hair loss and white hair, and is characterized in that it It is composed of fatty acids in the following weight percent range: hexadecanoic acid 8-32%, hexadecenoic acid 11-35%, octadecenoic acid 13-33%, octadecanoic acid 0.3-2.5%, octadecanoic acid Carbadienoic acid 11-33%, octadecatrienoic acid 3-15%. Compared with other drugs, the drug composition is simple, belongs to the target organ agonist, and has an independent reversible regulation function on the second messenger of the body. It is a medicine with high curative effect, safety and simplification.

The invention discloses a method for encapsulating an optoelectronic device. The prepared device is encapsulated by a thin film encapsulation method. The optoelectronic device is covered by a thin film encapsulation layer, and the thin film encapsulation layer consists of thin layers of inorganic thin film encapsulation material and thin layers of ultraviolet curable resin alternately. Overlapping composition, the ultraviolet curable resin includes the following components: epoxidized octadecyl-conjugated triene-9,11,13-acid triglyceride, reaction diluent and triarylsulfur hexafluoroantimony salt. The encapsulation method can effectively block oxygen and water in the surrounding environment, which is beneficial to improving the stability of the device and prolonging the service life of the device; at the same time, the encapsulation method has the characteristics of simple preparation process and low cost.

The invention discloses a multifunctional lubrication additive comprising the following components in parts by weight: 30-40 parts of extreme pressure antiwear agent and PN-containing additives, 10-25 parts of sulfurized isobutene, 10-20 parts of amine sulfuric-phosphoric diester, 50-60 parts of oleic acid epoxy ester as an oiliness additive, 1-5 parts of 9-octadecenoic acid (Z)-, [(2-hydroxyethyl) imino]di-2,1-ethanediyl ester as an antirust additive and a corrosion inhibitor and 5-10 parts of thiadiazole derivative and benzotriazole derivative mixture as a metal deactivator. The invention has the advantages that a plurality of industrial gear oil complex additives with different specifications can be compounded due to the addition of a plurality of components in the extreme pressure antiwear agent.

The invention discloses cis-12 hydroxy octadecenoic acid-3-methyl-imidazole hexafluorophosphate ionic liquid and a four-stroke engine lubricating oil composition containing the same, and belongs to the field of lubricating oil production. The lubricating oil composition is mainly mixed by the following raw materials according to the weight ratio: lubricating oil base oil, cis-12 hydroxy octadecenoic acid-3-methyl-imidazole hexafluorophosphate, a viscosity index improver, a dispersing agent, a clearing agent, an oxidation and corrosion inhibitor, a base number reserving agent and an antifoaming agent. Compared with the prior art, the cis-12 hydroxy octadecenoic acid-3-methyl-imidazole hexafluorophosphate ionic liquid solves the problem that various annexing agents are easy to separate out when lubricating oil is placed for a long time, has the characteristics of good usability, environmental protection, energy saving and the like, and has a good application and dissemination valve, and abrasion of an engine can be obviously reduced.

The invention relates to a health product, which is characterized in that: the health product comprises timnodonic acid, docosahexaenoic acid, hexadecenoic acid, octadecenoic acid, octadecadienoic acid, octadecatrienoic acid, eicosatetraenoic acid and docosapentaenoic acid, wherein the mass summation of the timnodonic acid and the docosahexaenoic acid accounts for 35 to 40 percent of the total mass, and the mass summation of the hexadecenoic acid, the octadecenoic acid, the octadecadienoic acid, the octadecatrienoic acid, the eicosatetraenoic acid and the docosapentaenoic acid accounts for 60 to 75 percent of the total mass. The contents of fish oil extracts EPA and DHA prepared by the method are between 35 and 40 percent; and the deep sea fish oil prepared from the extracts taken as main raw materials has the advantages of having an obvious lipid-reducing effect, diversifying active ingredients, and achieving the effects of inhibiting platelet aggregation, lowering neutral lipid in blood, lowering cholesterol of low density lipoprotein and low density lipoprotein, increasing high density cholesterol, lowering blood viscosity, lowering cholesterol, preventing heart cerebrovascular diseases, reducing arterial pressure, alleviating gout and rheumatoid arthritis, improving the development of the brain and eyes and the like, so that the health product is the best choice of middle and old-aged people.

The invention discloses a KSc2F7:Yb, Er up-conversion nanorod. The nanorod is prepared by using ScCl3, NH4F and KOH for thermal decomposition reaction, using oleic acid as a surfactant and using octadecenoic acid as a high-boiling point organic solvent, and the nano rod is co-doped by Yb<3+> / Er<3+>, can be dissolved in a non-polar organic solvent and can emit strong red up-conversion fluorescent light. The cyclohexane solution of the KSc2F7:Yb, Er provided by the invention respectively emits three different fluorescent lights including blue, green and red when being treated by up-conversion fluorescence detection. But the intensity of the red fluorescent light is greatly higher than that of other two colors, finally, the cyclohexane solution displays strong red fluorescent light under the stimulation of a 980nm light source, and the cyclohexane solution can be used for preparing a fluorescence sensitive material. The invention also discloses a preparation method of the KSc2F7:Yb, Er up-conversion nanorod.

An inductive production-increase agent for the honeybee pollination on flowering plants comprises (E)-9-Oxodec-2-enoic acid (9-ODA), R (-)-9-hydroxy-(E)-2-decenoic acid (R(-)-9HDA), S(+)-9-hydroxy-(E)-2-decenoic acid (S (+) -9HDA), Methyl 4-hydroxybenzoate (HOB), 4-hydroxy-3-methoxyphenylacetic (HVA), 9-Octadecenoic acid methyl ester (methyl oleate), (E)-4-(4-Hydroxy-3-methoxypheny)-3-2-propen-1-ol (coniferyl alcohol), hexadecanol and (Z9, Z12, Z15)-9, 12, 15-octadecatrienoic acid (linolenic acid); the invention can effectively induce a honeybee to pollinate on flowering plants. The inductive production-increase agent has a positive effect on the production increase of honeybee pollination on blueberries and cherries; it effectively extrudes the application of the queen bee flowing element in the inductive production increase in the pollination on blueberries and cherries.

The present invention relates to a composition for treatment of obesity using a wheat bran extract or a tachioside or 9,12,13-trihydroxy-10(E)-octadecenoic acid, an active ingredient isolated therefrom. The wheat bran extract or the active ingredients inhibit the expression of PPARγ, C / EBRα and ADD1 / SREBP1c, transcription factors which inhibit the differentiation of adipocyte progenitor cells to adipocytes, promoted by insulin, inhibit the accumulation of fats, and are centrally involved in the differentiation of adipocytes.

The invention provides a additive combination with synergism function of pesticide, the combination comprises the following components by weight percentage: 10 to 20 percent of methyl hexadecanoate, 5 to 10 percent of methyl stearate, 20-40 percent of 9-cis-octadecenoic acid methyl ester, 20 to 40 percent of 9, 12-cis-octadecadienoic acid methyl ester, 10 to 20 percent of 9-cis-11-trans-13-trans-jecoric acid methyl ester, 10 to 20 percent of benzene ethylphenol polyoxyethylene ether, 1 to 5 percent of calcium alkyl benzene sulfonate. The additive combination with synergism function of pesticide has the advantages of convenient raw material source, no pollution to environment, convenient preparation and application, and herbicidal efficacy of herbicide can be improved significantly.

The invention discloses an in vitro culture system kit for raising human sperm motility and an application thereof and belongs to the field of XX technology. The kit comprises 9mL of mHTF, 25 microliters of Hexadecanoic Acid, 25 microliters of Trans-13-Octadecenoic Acid, 20 microliters of 9,12-Octadecenoic, 30 microliters of Arachidonic Acid and 50 microliters of Docosahexaenoate Acid. The reagents in the kit are mixed and balanced at 37 DEG C for 2-3 h so as to obtain 10.15 ml of a sperm culture system; and sperm with the concentration of 10 millon / mL that is separated by a sperm split liquid is resuspended by the use of the above sperm culture system, blending is lightly carried out, and the product is put in a thermotank of 37 DEG C for 90-120 min, so as to achieve the effect of raising sperm motility. By the use of the kit, sperm progressive motility can be remarkably raised. When the kit is used in the technologies of artificial insemination and in vitro fertilization, pregnancy outcome can be improved, and rate of fertilization can be raised. Meanwhile, a new method is provided for treatment of patients with severe asthenospermia.

The invention provides a freeze drying method for improving the survival rate of lactobacillus plantarum and belongs to the field of freeze drying. The method provided by the invention comprises the following steps: step 1, performing strain activating to obtain a single colony; step 2, inoculating and culturing the single colony to obtain a seed liquid; step 3, transferring the seed liquid to anMRS liquid culture medium containing 0.5-2 g / L octadecenoic acid for expanding culture to obtain an expanded culture solution; step 4, centrifuging the expanded culture solution to obtain thallus precipitate; and step 5, washing the thallus precipitate with a PBS buffer solution, re-suspending the thallus precipitate in a PBS solution or a protective agent solution, transferring the thallus precipitate into a container, and freeze-drying the thallus precipitate. The octadecenoic acid is preferably oleic acid. The octadecenoic acid is used in the expanding culture step, so that the survival rate of the rehydrated lactobacillus plantarum after freeze drying is obviously improved, and unexpected technical effects are brought.

The invention discloses environment-friendly efficient lubricating type ultrathin aluminum foil rolling oil. The rolling oil is prepared from, by weight, 91-98% of base oil D140, 0.1-0.2% of grapheneoxide-based nanometer titanium dioxide, 0.1-0.3% of graphene oxide-based nanometer zinc oxide, 0.3-0.5% of octadecenoic acid, 0.5-1.5% of triethanolamine borate, 0.3-1.5% of dodecanol, 0.3-3.0% of isooctyl stearate, 0.6-1.5% of dodecanoic acid and 0.1-0.5% of T508. The lubricating oil has efficient lubricating performance and a certain surface repairing function, the surface quality of the rolledaluminum foil can be remarkably improved, and meanwhile the annealing performance of rolling oil can be improved.

The invention relates to a nicosulfuron weedicide composite which contains effective adjuvant for farm insecticides and is prepared by the components by volume proportion of 100 portions of nicosulfuron suspending agent diluents and 0.05-0.5 portion of effective adjuvant, wherein, the nicosulfuron suspending agent diluents are formed by diluting nicosulfuron weedicide the mass content of which is 4% in water into 300-1500 times of volume; the effective adjuvant contains the following components by weight percentage: 10-20% of methyl hexadecanoate, 5-10% of methyl stearate, 20-40% of 9-cis-octadecenoic acid methyl ester, 20-40% of 9-cis, 12-cis-octadecadienoic acid methyl ester, 10-20% of 9-cis-11-trans-13-trans-ecoric acid methyl ester, 10-20% of benzene ethylphenol polyoxyethylene ether and 1-5% of calcium alkylbenzene sulfonate. The composite has the advantages of available raw materials, no environmental pollution, convenient preparation and easy application, can obviously enhance the efficacy of the nicosulfuron weedicide, and has great application value.

The invention discloses a method for encapsulating an optoelectronic device. The prepared device is encapsulated by a thin film encapsulation method. The optoelectronic device is covered by a thin film encapsulation layer, and the thin film encapsulation layer consists of thin layers of inorganic thin film encapsulation material and thin layers of ultraviolet curable resin alternately. Overlapping composition, the UV curable resin includes the following components: epoxidized octadecyl-conjugated triene-9,11,13-acid triglyceride, glycerol, lead oxide, toluene diisocyanate, trimethylol Propane, hydroquinone, tetrahydrofuran, 2-hydroxyethyl methacrylate, dibutyltin dilaurate, 2,2-dimethoxy-phenylmethanone, and trimethylolpropane triacrylate. The encapsulation method can effectively block oxygen and water in the surrounding environment, which is beneficial to improving the stability of the device and prolonging the service life of the device; at the same time, the encapsulation method has the characteristics of simple preparation process and low cost.

The invention discloses normal-temperature phosphorite flotation collector and a preparation method thereof and belongs to the technical field of phosphorite flotation collector. The collector is made from, by weight, 0.50-0.60 part of octadecenoic acid, 0.15-0.20 part of ricinoleic acid, 0.05-0.10 part of citric acid, and 0.10-0.30 part of higher alcohol of the level above C12. The preparation method of the collector includes: heating the ricinoleic acid, adding alkali liquor, mixing well, adding the octadecenoic acid and the citric acid, mixing, heating for melting and saponification, adding the higher alcohol, and mixing well to obtain the normal-temperature phosphorite flotation collector. The cost of the normal-temperature phosphorite flotation collector is low, the materials of the normal-temperature phosphorite flotation collector are widely sourced, and recovery of illegal cooking oil can be promoted. The preparation method has the advantages that efficient normal-temperature phosphorite flotation can be achieved, beneficiation cost is reduced, and flotation froth is good and non-sticky and weak in capacity of collecting carbonate.

The invention relates to the technical field of engineering plastics, in particular to a polycarbonate / polyester alloy composition resistant to long-term thermo-oxidative aging and a preparation method thereof. The polycarbonate / polyester alloy composition comprises the following components: polycarbonate, polyester, a flexibilizer, an octadecenoate stabilizer, a transesterification inhibitor and an antioxidant. By simultaneously adding the octadecenoate stabilizer and the transesterification inhibitor, the active molecular chain ends of polycarbonate and polyester can be passivated, the transesterification reaction of the polycarbonate / polyester alloy is inhibited, and the thermo-oxidative aging of the polycarbonate / polyester alloy is slowed down, so that the prepared polycarbonate / polyester alloy composition has good mechanical properties and obviously improved long-term thermo-oxidative aging resistance. According to the preparation method of the polycarbonate / polyester alloy composition resistant to long-term thermo-oxidative aging, the polycarbonate / polyester alloy composition is prepared through premixing and extrusion granulation, and the preparation method has the characteristics of being simple in preparation step, low in production cost and easy to produce on a large scale.

The invention relates to a stain removal and antistatic spray for the surface of leather clothing, which comprises the following components in mass part: 0.2-8 parts of sodium dodecyl-benzenesulfonate, 3-10 parts of alkylphenol ethoxylates, 1-1.8 parts of alkaline phosphate, 1.5-2.3 parts of glyceryl stearate, 0.7-1.5 parts of sorbitol, 5-25 parts of alkyl silicone oil, 5-20 parts of cis-9-octadecenoic acid, 0.05-0.5 part of essence and 69-83 parts of water. The stain removal and antistatic spray for the surface of the leather clothing, provided by the invention, can effectively remove stubborn stains such as greasy dirt and coffee stains and enables the leather clothing to have the antistatic effect; the treated leather clothing has a bright and soft surface; meanwhile, the spray further can be used for treatment of leather products such as leather bags and leather shoes.

The invention discloses a method for encapsulating an optoelectronic device. The prepared device is encapsulated by a thin film encapsulation method. The thin film encapsulation layer covers the optoelectronic device. Overlapping composition, the UV-curable resin includes the following components: epoxidized octadecyl conjugated triene-9,11,13-acid triglyceride, glycerol, lead oxide, toluene diisocyanate, trimethyl alcohol Propane, hydroquinone, tetrahydrofuran, 2-hydroxyethyl methacrylate, dibutyltin dilaurate, 2,2-dimethoxy-phenyl ketone and methyl methacrylate. The packaging method can effectively block oxygen and water in the surrounding environment, which is beneficial to improve the stability of the device and prolong the life of the device; meanwhile, the packaging method has the characteristics of simple preparation process and low cost.

The invention belongs to the technical field of fuel additives and particularly relates to an efficient fuel combustion-increasing agent. The efficient fuel combustion-increasing agent is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of butyl octadecenoate, 10-14 parts of polyether alcohol, 18-20 parts of isooctanol, 14-16 parts of fatty acid amide, 8-10 parts of triethylamine, 3-5 parts of di-iso-octyldiphenylamine, 1-3 parts of alkyl sodium sulfonate and 6-8 parts of methyl tertiary butyl ether. The efficient fuel combustion-increasing agent provided by the invention is prepared by the following steps: selecting the raw materials; then mixing according to a sequence of a formula; and quickly stirring for 3-6 minutes once one raw material is added. The efficient fuel combustion-increasing agent has the effects of saving energy, reducing emission, cleaning and increasing combustion.

The invention discloses dihydroxyoleic acid, a preparation method and application thereof, which relate to a novel octadecenoic acid derivative, namely the dihydroxyoleic acid, the preparation method and the application thereof. The compound is the dihydroxyoleic acid obtained by the following steps: stirring conjugated linoleic acid and selenium dioxide for 0.5 to 2h at a temperature of between 25 and 60 DEG C; continuing stirring to react for 12 to 48 hour; adding water to wash the obtained product; and collecting an organic solvent layer and recovering a solvent, wherein a molecular formula is C18H34O4, and the morphology is yellowish oily matter. The dihydroxyoleic acid can be used for preparing medicaments or food for treating obesity, reducing blood fat, reducing blood sugar and improving the immunity, and preparing antioxidative and whitening skin nursing preparations for external application. L-carnitine can also be added into the dihydroxyoleic acid to prepare medicaments or food for treating obesity, reducing blood fat and reducing blood sugar or serve as a feed additive, and the weight ratio of the dihydroxyoleic acid to the L-carnitine in a product is 4:1-8.

The embodiment of the invention discloses a quantum dot and a preparation method thereof. The method comprises the following steps of: adding sulfur powder into 1-octadecenoic acid, and mixing to obtain sulfur precursor solution; adding a Zn salt, an M salt, an In salt and an organic encapsulant into 1-octadecenoic acid, and heating to obtain transparent solution, wherein the M salt is a Cu salt or an Ag salt; and heating the transparent solution in the presence of a protective gas, and mixing the heated transparent solution and the sulfur precursor solution to react to obtain the ZnxMyInS1.5<+>x<+>0.5y quantum dot. In the preparation method provided by the invention, the synthesis condition is simple. The quantum dot prepared by the invention does not contain highlytoxic elements, such as Cd, Pb, Hg, As and the like, and has relatively high biocompatibility. In addition, the quantum dot prepared by the method has high fluorescence intensity, so that the quantum dot can serve as a fluorescent probe which is combined with biomolecules, can be applied to living cell image formation, tracking and monitoring of protein, viruses or enzymes, DNA analysis, DNA biologic sensing, disease diagnosis and the like.

The invention provides a low-temperature fast-dry amino automobile chassis paint and a production method thereof, wherein, the paint consists of B-12 resin, medium pigment carbon black, compound ferrotitanium powder, ultra-fine mica powder, an auxiliary agent, sealed paratoluenesulfonic acid BYK-450 and BR-167 amino resin; B-12 resin is prepared by octadecenoic acid, benzoic acid, pentaerythritol, phthalic anhydride, dimethylol propionic acid, and trimethyl benzene. The automobile chassis paint adopts special B-12 resin synthetic route to lead the polymer chain to have more active functional groups simultaneously to be matched with the blocked paratoluenesulfonic acid, reduces the baking temperature of the existing amino paint from 130 DEG C to 90 DEG C and reduces the curing film-formingtime from 1 hour to half an hour. As the paint film has high crosslinking density, compound ferrotitanium powder and squamous anti-rust pigment are matched for use, and the polyaniline is used for improving the anticorrosive potentials, thus leading the salt spray resistance of the paint to achieve 150 hours and improving the protection performance and the coating efficiency.

The invention discloses a preparation method of a bongkrekic acid high-selectivity enrichment solid-phase micro-extraction probe. The preparation method comprises the following steps of: providing a solid substrate; carrying out surface modification on the solid substrate to enable the surface of the solid substrate to be rich in methacryloyloxy so as to obtain a surface modified solid substrate; and carrying out a molecular imprinting polymerization reaction on the surface modified solid substrate through a molecular imprinting technology by taking methacryloyloxyethyl trimethyl ammonium chloride and octadecyl methacrylate as functional monomers and vitamin A acid and (R)-12-hydroxy-cis-9-octadecenoic acid as template molecules to enable a molecularly imprinted coating with high selective adsorption capacity on bongkrekic acid to be attached to the surface of the solid substrate. The solid-phase micro-extraction probe disclosed by the invention can be used for efficiently extracting and enriching bongkrekic acid in complex food, the enrichment coefficient can reach thousands of times, and the detection limit can reach the level of [mu]g / L. The probe is simple to manufacture, low in price, disposable, capable of effectively preventing cross contamination and memory effect, and especially suitable for rapid analysis and detection of food safety.

The invention discloses an agricultural synergist with combination of multiple vegetable oils. The agricultural synergist is prepared from the following components: octadecenoic acid vegetable oil, vegetable oil containing terpene, alkene and alcohol, diglycerol sodium laurate and polyoxyethylene ether castor oil. The invention also discloses a preparation method of the agricultural synergist withthe combination of the multiple vegetable oils. The prepared agricultural synergist with the combination of the multiple vegetable oils has the beneficial effects that the formula is totally sourcedfrom plants, the agricultural synergist is environmentally friendly, cannot cause secondary pollution and can be used as a pollution-free prevention and control preferred synergist; the synergistic effect is obvious, the use amount of a pesticide can be reduced by 30% or more, and the nationally-advocated policy of zero increase of chemical fertilizer and pesticide can be met; the agricultural synergist also has physically closed insecticidal and sterilizing characteristics, has low influence on natural enemies, has no environmental residues, is safe to human and livestock, and can be promotedand used on organic agriculture.

The invention provides a HYA derivative having superior physiological functions intrinsic to HYA and permitting easy ingestion and easy handling, and use thereof. In particular, the invention relates to a triglyceride in which at least one fatty acid forming an ester bond with a hydroxy group of glycerol is 10-hydroxy-cis-12-octadecenoic acid, or an optical isomer thereof, and a composition (edible fat or oil, food, medicament, cosmetic etc.) containing same.