38 results about "Ethyl myristate" patented technology

The present invention relates to an injectable, pharmaceutical composition comprising a C1-6 alkyl ester of a C10-20 fatty acid. In an embodiment, the fatty acid is ethyl oleate, isopropyl oleate, ethyl myristate, or isopropyl myristate. These compositions are useful for the delivery of anti-psychotic drugs.

The invention discloses an application of ethyl myristate as a sex attractant for luring loxostege sticticalis. Furthermore, the invention provides a sex attractant for luring loxostege sticticalis, wherein loxostege sticticalis is taken as an active component of the sex attractant. The sex attractant, combined with a gas chromatography-mass spectrometer (GC-MS), a gas chromatography-electroantennogram measuring system (GC-EAD) and series behavior tests, carries out a chemical identification for sex pheromones of loxostege sticticalis population in China, and implements a field luring test for male moths. Research results show that by taking the ethyl myristate as a sex attractant for luring the release of female moths of loxostege sticticalis, the female moths, in a dark period of the 3rd day after eclosion, are under a calling state, and sexual glands stretch out of tail ends of the abdomens to release sex pheromones so as to attract the male moths to mate. The research achievement will provide a theoretical basis for the application of sex pheromone in insects monitor, prevention and control of loxostege sticticalis in China, so as to effectively prevent disaster caused by loxostege sticticalis on the husbandry in Northern China.

The invention provides a saccharomyces cerevisiae strain with high yield of flavor ethyl ester and a construction method of the saccharomyces cerevisiae strain. An encoding gene FAS1 of a strong promoter PGK1 over-expressed fatty acid synthetase beta subunit is selected, an inositol-mediated controlling gene OPI1 is knocked out, and the saccharomyces cerevisiae strain with high yield of flavor ethyl ester is obtained. Compared with original strains, the strain has the following advantages under the condition that other fermentation performance of the strain is basically not affected: the content of ethyl acetate reaches 52.49 mg / L and is increased by 2.61 times than that of the original strains after 5 days of simulated liquid-state liquor fermentation of a corn material; the content of medium-chain fatty acid ethyl ester ethyl caproate, the content of ethyl caprylate, the content of ethyl caprate and the content of ethyl laurate are increased by 1.21 times, 2.66 times, 2.53 times and 1.27 times respectively than those of the original strains; the content of long-chain fatty acid ethyl ester ethyl myristate and the content of ethyl palmitate are increased by 1 time and 56.7% respectively.

The present invention provides a perfume composition for mental control, the composition containing one or more components acknowledged as having a psycho-sedative effect selected from the group consisting of terpinyl butyrate, gamma -nonalactone, acetyl isoeugenol, methyl anisate, terpineol, nerol, chrysanthenone, lyral, lilial, beta -phenylethyl alcohol, gamma -methyl ionone, Iso E Super, Z-3-hexenyl salicylate, p-methylphenylacetaldehyde, limonene, ocimene, helional, linalyl acetate, geranyl acetate, geraniol, hedione, linalool, citronellol, and gamma -hexalactone and / or one or more components acknowledged as having a psycho-stimulative effect selected from the group consisting of piperitone, isoamyl angelate, phenylethyl angelate, cuminyl alcohol, menthalactone, ethyl myristate, and perilla aldehyde. The invention also provides an external composition and daily-use goods, containing the perfume composition for mental control.

The invention discloses purple yam essence, and a preparation method and application thereof. The purple yam essence is prepared from 2,3,5-trimethyl pyrazine, 2,3-dimethylpyrazine, dimethyl sulfide, butanedione, 3-hydroxy-2-butanone, 3-methylthiopropanal, 2-acetylpyrazine, 3-methylthio-propanol, butyryl butyl lactate, gamma-heptalactone, gamma-caprylolactone, ethyl maltol, maltol, anisic aldehyde, gamma-nonalactone, ethyl myristate, gamma-decalactone, delta-decalactone, mercaptan, delta-dodecalactone, ethyl vanillin, vanillin, trans-2-ethoxy-5-phenol and vanilla bean tincture are used as the main raw materials. the purple yam essence is prepared by adding all the raw materials into a container and uniformly agitating and mixing to obtain the purple yam essence. According to the purple yam essence, the raw materials are rich in source, so that the purple yam essence is coordinated and soft in aroma, has the natural featured aroma of prepared henry steudnera, and is rich in aroma, long in lasting time and stable. The purple yam essence can be used for adding the aroma of cakes, ice cream, milk products, drink and other products.

The invention relates to essence with the fragrance of thick broad-bean sauce and a preparation method of the essence. The essence is prepared from furanone, methyl cyclopentenolone, ethyl vanillin, ethyl maltol, propanediol, 2-acetyl pyrrole, butyric acid, anisic aldehyde, 4-methyl-5-ethoxyl-thiazole, 4-methyl-5-acetoxy ethyl thiazole, ethyl myristate, phenylethyl phenylacetate, 4-guaethol, 2-acetyl furan, 3-methylmercapto-propanol, lactic acid, 2-methylpyrazine, 2,3,5-trimethylpyrazine, 2-acetyl thiazole, 3-methylmercapto-propanal, ethyl butyrate and glacial acetic acid. According to the essence, the specific property of the fragrance of the thick broad-bean sauce is ensured, and the essence has the joyful sour and sweet sauce fragrance, is lasting, comfortable, strong and stable in fragrance, and has the note which is the same as that of the characteristic fragrance of the thick broad-bean sauce. In addition, the heat resistance of the essence is higher than that of the fragrance of the thick broad-bean sauce, and the fragrance retention period is also longer than that of the fragrance of the thick broad-bean sauce. The method for preparing the essence is simple and is suitable for large-scale production, and the essence is easy to produce in a large scale.

The invention discloses an attractant for a carpomya-vesuviana-costa adult and application thereof. The attractant is prepped from one or more of myristic acid, ethyl myristate, ethyl laurate, ethyl palmitate, a mixture, ethyl linoleate and ethyl oleate. When the attractant is applied, different formulas of the attractant are provided aiming at carpomya-vesuviana-costa male adult and female adult; a jujube-fruit volatile matter is adopted as the attractant and used by matching with a yellow insect sticky trap; the attractant has the characteristics of being good in attraction effect and high in specificity and having no adverse influences on an environment; the attraction activity, to carpomya vesuviana costa, of six substances in the formulas are tested respectively with a four-arm olfactometer; shown by results, the female carpomya vesuviana costa has higher selection rates, which are all 30 percent or above, to the ethyl palmitate, the ethyl laurate and the myristic acid; the male carpomya vesuviana costa has higher selection rates, which are all 25 percent or above, to the ethyl linoleate and the ethyl oleate. Through continuous 8d monitoring in field, the attraction effect of the volatile matter myristic acid is better; the maximum trapping quantity is up to 23 carpomya-vesuviana-costa adults per trapper and the average trapping quantity is 18.2 carpomya-vesuviana-costa adults per trapper.

The invention discloses a reed leaf essence and a preparation method thereof. The reed leaf essence is prepared by mixing and then uniformly stirring the following components by mass percent: isophorone, 1% cis-4-hepen-1-al, vanillin, 10% ethyl myristate, 1% ethyl laurate, 2,4-dimethyl-5-acetyl thiazole, 1% 2,5-dimethyl pyrazine, 1% methyl cyclopentenolone, 1% 2-acetyl pyridine, mercaptan, leaf alcohol, sulfurol acetate, nonanal, 1% oxoisophorone, 20% furanone, ethyl maltol, maltol, vanilla bean tincture and a solvent. The raw materials used by the reed leaf essence are readily available, and the obtained reed leaf essence has a fresh, harmonious and soft fragrance, and a typical aroma of natural reed leaves, and is rich, lasting and stable in fragrance. The reed leaf essence can be used for flavoring rice dumplings, ice cream, cake and other foods.

The present invention provides a perfume composition for mental control, the composition containing one or more components acknowledged as having a psycho-sedative effect selected from the group consisting of terpinyl butyrate, γ-nonalactone, acetyl isoeugenol, methyl anisate, terpineol, nerol, chrysanthenone, lyral, lilial, β-phenylethyl alcohol, γ-methyl ionone, Iso E Super, Z-3-hexenyl salicylate, p-methylphenylacetaldehyde, limonene, ocimene, helional, linalyl acetate, geranyl acetate, geraniol, hedione, linalool, citronellol, and γ-hexalactone and / or one or more components acknowledged as having a psycho-stimulative effect selected from the group consisting of piperitone, isoamyl angelate, phenylethyl angelate, cuminyl alcohol, menthalactone, ethyl myristate, and perilla aldehyde. The invention also provides an external composition and daily-use goods, containing the perfume composition for mental control.

The invention discloses a crab essence and its preparation method and application. The crab essence contains dodecanoic acid, thiothiazole, thioacetate, ethyl octanoate, ethyl myristate, edible glacial acetic acid, dimethyl sulfide, Distilled ginger oil, trimethylamine, capric acid, caprylic acid, caprylic acid thioester, 3-methylthiopropanal, 2,3,5-trimethylpyrazine, propylene glycol and glyceryl triacetate, the present invention has developed a specific formula Crab flavor, just a small amount, has the effect of strong crab meat, good fresh and sweet taste, and high fidelity, and is loved by a wide range of consumers; and even after high-temperature roasting, frying, and steaming, it will not affect the effect of crab flavor. It shows that the crab essence of the present invention has the properties of high temperature resistance and stable flavor. The crab essence of the invention can well supplement the flavor loss of the recombined crab meat due to thermal processing, enhance the sweetness and authenticity of the crab meat-flavored meatballs, and improve consumers' liking.

The present invention relates to an injectable, pharmaceutical composition comprising a C1-6 alkyl ester of a C10-20 fatty acid. In an embodiment, the fatty acid is ethyl oleate, isopropyl oleate, ethyl myristate, or isopropyl myristate. These compositions are useful for the delivery of anti-psychotic drugs.

The present invention features a novel, low side-effect pharmaceutical compound complex, comprising the pharmaceutically effective dose of isoniazid (INH) and pharmaceutically effective dose of one of the following compounds. Said compound was selected from the following groups of compounds: Nordihydroguaiaretic acid, Trans-Cinnamaldehyde, Daidzein, Isovitexin, Kaempferol, disulfuram, β-Myrcene, Quercetin, (−)-Epigallocatechin-3-gallate, (+)-Limonene, Myricetin, Quercitrin, Luteolin-7-Glucoside, Morin, Neohesperidin, Hesperidin, Capillarisin, (−)-Epigallocatechin, Luteolin, Hyperoside, Ethyl Myristate, Tamarixetin, Phloretin, Baicalein, Rutin, Baicalin, Apigenin, Naringenin, Hesperetin, (+)-Epicatechin, (−)-Epicatechin-3-gallat, Isoliquritigenin, Silybin, Vitexin, Genistein, Isorhamnetin, gallic acid, Diosmin, 6-Gingerol, (+)-Taxifolin, Wongonin, Protocatechuic acid, (+)-Catechin, β-naphthoflavone, Embelin, Trans-Cinnamic acid, (−)-Epicatechin, Phloridzin, Puerarin, Umbelliferone, Brij 58, Brij 76, Brij 35, Tween 20, Tween 80, Tween 40, PEG 2000, PEG 400, Pluornic F68, and PEG 4000. The novel, low side-effect compound complex which contains pharmaceutically effective doses of isoniazid (INH), disulfuram (DSF) and / or a third compound, bis-nitrophenyl phosphate (BNPP) can reduce isoniazid (INH)-induced side effects, e.g. hepatotoxicity, etc.

The invention relates to a water treatment agent for removing an organic pesticide in wastewater. The water treatment agent is prepared by compounding the following raw materials: alpha-humulene, calcium carboxymethylcellulose, 5,5-dimethylimidazolidine-2,4-diketone, 3,5,7-trihydroxy-4`-methoxyflavone, (3beta)-8,24-lanostadiene-3-alcohol, 4-(2,6,6-trimethyl-2-cyclooctene-1-yl)-3-butene-2-ketone, crosslinked polyvinyl pyrrolidone, alpha-furfural, alpha-methyl-4-(1-methyl ethyl)benzenepropanal, 1,2-dyhydroxyl-1,2,3-propanetriformic acid, ethyl myristate, distarch glycerol, and 7-hydroxyl-3,7-dimethyl-octanal. The water treatment agent is strong in complexing power with the organic pesticide, is fast in sedimentation speed of formed complex, has the removal rate up to 99 percent, is low in toxicity, is small in dosage, does not generate harm to a water body, is small in occupation area, and is low in treatment cost.

The invention discloses a novel method for producing biodiesel from rice straw. The novel method includes steps of mixing trichoderma, aspergillus oryzae and phanerochaete chrysosporium with one another according to a proportion of 90:8:2 and carrying out solid-state fermentation; carrying out uncontrolled wet closed static fermentation for 4 days and converting the rice straw into diversified small-molecule carbohydrates; producing polyunsaturated fatty acid from straw hydrolysate by means of fermentation by the aid of fermentation trichosporon asahii at the temperatures of 25-28 DEG C; preparing the biodiesel from prepared rice straw hydrolysate and prepared unsaturated fatty acid by the aid of constructed Escherichia coli homologous recombinant bacteria with fatty acid ethyl ester (namely, biodiesel) synthesis ability. The straw hydrolysate is used as a raw material for the polyunsaturated fatty acid. The rice straw hydrolysate is used as sugar liquor for the biodiesel, and the unsaturated fatty acid is used as a raw material for the biodiesel. The novel method has the advantages that as shown by gas chromatographic analysis, the biodiesel prepared by means of fermentation mainly comprises ethyl oleate, ethyl myristate, ethyl palmitate and ethyl 9-hexadecenoate; various indexes of the biodiesel produced by the aid of the novel method conform to international biodiesel standards.

The invention discloses rice dumpling essence. The rice dumpling essence comprises reed leaf aroma, wherein the reed leaf aroma is expressed by the following raw materials in parts by weight of 70-90parts of an indocalamus leaf extract, 0.0005-0.002 part of cis-4-heptenal, 0.1-0.3 part of ethyl myristate, 0.1-0.5 part of ethyl dodecanoate, and 0.1-1 part of palmic acid. According to the rice dumpling essence provided by the invention, the cis-4-heptenal, the ethyl myristate, the ethyl dodecanoate and the palmic acid are compounded to express the fragrance of reed leaves, and cooperate with raw materials expressing rice fragrance, so that complete rice dumpling fragrance is expressed, the rice dumpling essence is rich in eating flavor, and sweet, mellow and fluent in fragrance, stimulatesthe appetite, improves the feel of water from mouth, is durable in fragrance holding time and stable in nature. The invention further provides a preparation method of the rice dumpling essence, and the preparation method is simple in process, convenient to operate, and suitable for industrial and batch production.

The invention provides cumin-flavored essence for a dripping pill for a cigarette as well as a preparation method and application thereof. Fennel-flavored essence is prepared from 94.5% to 97.9% of cumin extract, 0.1% to 0.5% of cumaldehyde and 2.0% to 5.0% of ethyl myristate, wherein the cumin extract is obtained by using a cumin seed as a raw material, crushing the cumin seed, then adding into octyl and decyl glycerate with an amount which is 6 to 8 times the weight ratio of the cumin seed, thermally refluxing for 1h to 1.5h in a condition that a temperature of an oil bath is 120 DEG C to 150 DEG C, subsequently, carrying out ultrasonic treatment on an obtained mixture for 10min to 30min, and next, centrifuging, and taking supernatant liquid to filter. The cumin-flavored essence for thedripping pill for the cigarette, which is provided by the invention, has higher process adaptability; the production efficiency and finished-product rate of the dripping pill for a cumin-flavored cigarette are improved; the production cost of the dripping pill is decreased; the essence is easy to apply to the cigarette; the fragrance of the cigarette is enriched; the characteristic flavor is givento the cigarette; and the essence has quite high practicability and application value.

The invention discloses a Carpomya vesuviana Costa adult attractant and an application thereof. The attractant comprises myristic acid, ethyl myristate, ethyl laurate, ethyl palmitate, ethyl linoleateand ethyl oleate. When the attractant is applied, different attractant formulas are provided for male adults and female adults of the Carpomya vesuviana Costa; a jujube fruit volatile matter is usedas an attractant to be matched with the yellow sticky trap for use; the attractant has the characteristics of good attraction effect, strong specificity and no adverse effect on the environment, the attraction activity of the six substances in the formula on the Carpomya vesuviana Costa is respectively tested by a four-armed olfactometer, and the result shows that the selection rate of female insects on ethyl palmitate, ethyl laurate and myristic acid are high, and are respectively 30%; and the selection rates of male insects on ethyl linoleate and ethyl oleate are high and are respectively 25% or above. Through continuous 8d monitoring in the field, the trapping effect of volatile myristic acid is strong, the maximum trapping amount is 23 / piece, and the average trapping amount is 18.2 / piece.

The invention discloses a cheese type edible essence containing ethyl vanillin propylene glycol acetal. The cheese type edible essence comprises butanedione, acetoin, butyric acid, 2-methylbutyric acid, 3-methylthiopropionaldehyde, butyl butyrate, ethyl levulinate, diethyl malonate, ethyl maltol, mercaptan, butyl butyryl lactate, coconut aldehyde, thioacetate, delta-decalactone, peach aldehyde, vanillin malondiacetal, delta-undecalactone, ethyl vanillin malondiacetal, ethyl myristate and propylene glycol. According to the invention, the formula and the proportion are optimized, and ethyl vanillin propylene glycol acetal and other components are added, so that the fragrance is thick, the mouthfeel is thick and full, mellow cheese flavor and taste are achieved in food.

The invention discloses a condensed milk base. The formula comprises the following components in parts by weight: 20 to 40 parts of vanillin, 20 to 35 parts of ethyl vanillin, 50 to 80 parts of ethylmaltol, 10 to 20 parts of capric acid, 20 to 30 parts of lauric acid, 7 to 14 parts of decalactone, 10 to 20 parts of oleic acid, 10 to 15 parts of butyl decanolate, 15 to 22 parts of cconut aldehyde,30 to 50 parts of dodecalactone, 15 to 20 parts of butyl butyl lactate, 20 to 30 parts of milk fat, 3 to 6 parts of 3-methylthiopropanal, 15 to 25 parts of butanedione, 2 to 10 parts of 3-methylthiopropanol, 10 to 20 parts of sulfurol, 20 to 30 parts of ethyl myristate, 500 to 600 parts of digestion butter and 1 to 2 parts of tert-butyl hydroquinone. The invention discloses condensed milk essenceprepared from the condensed milk base.

The present invention features a novel, low side-effect pharmaceutical compound complex, comprising the pharmaceutically effective dose of isoniazid (INH) and pharmaceutically effective dose of one of the following compounds. Said compound was selected from the following groups of compounds: Nordihydroguaiaretic acid, Trans-Cinnamaldehyde, Daidzein, Isovitexin, Kaempferol, disulfuram, β-Myrcene, Quercetin, (−)-Epigallocatechin-3-gallate, (+)-Limonene, Myricetin, Quercitrin, Luteolin-7-Glucoside, Morin, Neohesperidin, Hesperidin, Capillarisin, (−)-Epigallocatechin, Luteolin, Hyperoside, Ethyl Myristate, Tamarixetin, Phloretin, Baicalein, Rutin, Baicalin, Apigenin, Naringenin, Hesperetin, (+)-Epicatechin, (−)-Epicatechin-3-gallat, Isoliquritigenin, Silybin, Vitexin, Genistein, Isorhamnetin, gallic acid, Diosmin, 6-Gingerol, (+)-Taxifolin, Wongonin, Protocatechuic acid, (+)-Catechin, β-naphthoflavone, Embelin, Trans-Cinnamic acid, (−)-Epicatechin, Phloridzin, Puerarin, Umbelliferone, Brij 58, Brij 76, Brij 35, Tween 20, Tween 80, Tween 40, PEG 2000, PEG 400, Pluornic F68, and PEG 4000. The novel, low side-effect compound complex which contains pharmaceutically effective doses of isoniazid (INH), disulfuram (DSF) and / or a third compound, bis-nitrophenyl phosphate (BNPP) can reduce isoniazid (INH)-induced side effects, e.g. hepatotoxicity, etc.

The invention discloses an application of ethyl myristate in preparation of a Varroa destructor attractant. The invention finds that the ethyl myristate can obviously attract the Varroa destructor, and the ethyl myristate can be used for preparing the Varroa destructor attractant. The ethyl myristate as the Varroa destructor attractant has the following advantages: 1, high safety: the ethyl myristate is a natural substance of bee larvae, so that the substance cannot pollute bee products and the natural environment, and the drug resistance of the bee mites is not easy to generate; 2, high efficiency: tests prove that the ethyl myristate has a very strong attracting effect on the Varroa destructor mites; 3, the ethyl myristate is commercially produced, is low in cost and is generally available; compared with the prior art, pollution risks to the environment, bees and bee product production are avoided. In addition, the Varroa destructor can be efficiently attracted, so that the Varroa destructor is prevented and treated, and the harm of the Varroa destructor to bee colonies is reduced.

The invention relates to lactobacillus paracasei subsp.paracasei RP38. A strain has been preserved in the China Center for Type Culture Collection at May 5, 2019, and the preservation number is CCTCCNO:M2019322; the Lactobacillus paracasei subsp.paracasei RP38 has the following characteristics that (1) volatile flavor substances can be generated in the environment lacking a nitrogen source through sugar-charcoal-source metabolism, the lactobacillus paracasei subsp.paracasei RP38 adapts to the physical property of raw materials such as grapes and tremella fuciformis and longan composite juice,the fermentation aroma generated by metabolism is strong and is coordinated with the raw material aroma, and the lactobacillus paracasei subsp.paracasei RP38 is an ideal fermentation agent for lacticacid fermentation fruit juice products; (2) the lactobacillus paracasei subsp.paracasei RP38 can be applied to biological fishy smell elimination treatment of laminaria japonica products, fishy substances such as 1,3-octadiene, E,Z-3-ethylidenecyclohexene, n-nonyl alcohol, n-heptaldehyde and iodooctane are biologically transformed to be obviously reduced, and secondary metabolites, such as beta-phenethyl alcohol, peach aldehyde, ethyl myristate, lauraldehyde and E-2-nonylene-1-alcohol, with good flavors such as fruital are generated; and (3) the lactobacillus paracasei subsp.paracasei RP38 has the characteristic of strong resistance, for example, the lactobacillus paracasei subsp.paracasei RP38 can tolerate high-osmotic-pressure environmental stress with the pH of peracid being 2.0 and the glucose concentration being 30%.

The invention discloses a preparation method and application of water-soluble sweet milk essence suitable for drinking water, porridge and liquid feed of mammals. The preparation method comprises the following steps: adding propylene glycol, butanedione, ethyl levulinate, bornyl isovalerate, ethyl dodecanoate, ethyl maltol, coconut aldehyde, ethyl myristate, glycerol triacetate, delta-decalactone, peach aldehyde, thiothiazole, delta-dodecalactone, dodecanoic acid, vanillin, myristic acid and palmitic acid according to a formula proportion, and then fully stirring and dissolving; performing closed curing in a container to obtain a sweet milk flavor essence core material; adding an emulsifier into the obtained sweet milk essence core material for emulsification; adding a stabilizer, and continuously emulsifying to obtain a liquid product; and spraying and adsorbing by adopting a carrier to obtain the solid water-soluble sweet milk essence. The formula design and emulsification process disclosed by the invention are simple, and the obtained sweet milk essence is good in water-soluble effect, low in cost, capable of promoting ingestion of weaned mammals and beneficial to popularization and application.

The present invention relates to a composition comprising non-water soluble dissacharides and oil, a solvent and at least one pharmaceutical ingredient, wherein the composition contains at least two compounds selected from saccharides and lipid oils such as lactose octabenzoate Methyl hepta-O-isobutyryl-α,β-lactoside, α,β-Lactose octa para-iodobenzoate, 3-iodobenzyl hepta-O-isobutyryl-α,β-lactoside, lactose octapropionate, lactose octaisobutyrate, sucrose octabenzoate, glycerol trihexanoate, Glycerol trioctanoate, Glycerol tridecanoate, Lipiodol, ethyl myristate, ethyl palmitate, ethyl oleoate and wherein the composition is a liquid before administration into the human or animal body and increases in viscosity by more than 2,000 centipoise (cP) after administration.

The invention discloses a carpomya vesuviana costa adult trapping method. According to the invention, a yellow sticky board with wave band of 560nm-600nm is adopted, the yellow sticky board faces thesunny side and is arranged with a distance of 1.5m-1.7m from the ground, an attractant is uniformly smeared to the yellow sticky board, and the attractant contains 50-60 parts of myristic acid, 40-60parts of ethyl myristate, 45-55 parts of ethyl laurate, 35-45 parts of ethyl palmitate, 30-40 parts of ethyl linoleate, 12-20 parts of ethyl oleate. In application, different attractant formulae are provided aiming at carpomya vesuviana costa male adults and female adults, have an obvious unique attractive effect for carpomya vesuviana costa adult, and have wide applicability in the field of pestcontrol.

The invention discloses purple yam essence, and a preparation method and application thereof. The purple yam essence is prepared from 2,3,5-trimethyl pyrazine, 2,3-dimethylpyrazine, dimethyl sulfide, butanedione, 3-hydroxy-2-butanone, 3-methylthiopropanal, 2-acetylpyrazine, 3-methylthio-propanol, butyryl butyl lactate, gamma-heptalactone, gamma-caprylolactone, ethyl maltol, maltol, anisic aldehyde, gamma-nonalactone, ethyl myristate, gamma-decalactone, delta-decalactone, mercaptan, delta-dodecalactone, ethyl vanillin, vanillin, trans-2-ethoxy-5-phenol and vanilla bean tincture are used as the main raw materials. the purple yam essence is prepared by adding all the raw materials into a container and uniformly agitating and mixing to obtain the purple yam essence. According to the purple yam essence, the raw materials are rich in source, so that the purple yam essence is coordinated and soft in aroma, has the natural featured aroma of prepared henry steudnera, and is rich in aroma, long in lasting time and stable. The purple yam essence can be used for adding the aroma of cakes, ice cream, milk products, drink and other products.

The invention relates to a method for simple and rapid determination of six fatty acid ethyl esters in human whole blood, belonging to the technical fields of drug detection and forensic identification, wherein the six fatty acid ethyl esters include ethyl myristate, ethyl palmitate, ethyl stearate, ethyl oleate, ethyl linoleate and ethyl arachidonate. The method is low in the usage amount of samples, and as few as 200 [mu]L of samples are examined. The process of pretreatment is simple and fast. A HP-5MS capillary gas chromatographic column and a mass spectrometric detector are employed for determination of the contents of the six fatty acid ethyl esters in human whole blood. The method has the advantages of high sensitivity, good specificity, a wide linear range, simple and fast operation and low usage amount of extraction solvents, and is capable of satisfying high requirements of urgent forensic identification tasks on detection time and easy to operate and promote.

The invention relates to a method for simple and rapid determination of six fatty acid ethyl esters in human whole blood, belonging to the technical fields of drug detection and forensic identification, wherein the six fatty acid ethyl esters include ethyl myristate, ethyl palmitate, ethyl stearate, ethyl oleate, ethyl linoleate and ethyl arachidonate. The method is low in the usage amount of samples, and as few as 200 [mu]L of samples are examined. The process of pretreatment is simple and fast. A HP-5MS capillary gas chromatographic column and a mass spectrometric detector are employed for determination of the contents of the six fatty acid ethyl esters in human whole blood. The method has the advantages of high sensitivity, good specificity, a wide linear range, simple and fast operation and low usage amount of extraction solvents, and is capable of satisfying high requirements of urgent forensic identification tasks on detection time and easy to operate and promote.

The invention discloses an application of ethyl myristate as a sex attractant for luring loxostege sticticalis. Furthermore, the invention provides a sex attractant for luring loxostege sticticalis, wherein loxostege sticticalis is taken as an active component of the sex attractant. The sex attractant, combined with a gas chromatography-mass spectrometer (GC-MS), a gas chromatography-electroantennogram measuring system (GC-EAD) and series behavior tests, carries out a chemical identification for sex pheromones of loxostege sticticalis population in China, and implements a field luring test for male moths. Research results show that by taking the ethyl myristate as a sex attractant for luring the release of female moths of loxostege sticticalis, the female moths, in a dark period of the 3rd day after eclosion, are under a calling state, and sexual glands stretch out of tail ends of the abdomens to release sex pheromones so as to attract the male moths to mate. The research achievement will provide a theoretical basis for the application of sex pheromone in insects monitor, prevention and control of loxostege sticticalis in China, so as to effectively prevent disaster caused by loxostege sticticalis on the husbandry in Northern China.