43 results about "Cinnamyl acetate" patented technology

The invention provides electronic cigarette tar which comprises the following components by mass percentage: 90-99% of atomized liquid and 1-10% of coca cola essence, wherein the coca cola essence comprises the following components in parts by weight: 0.1-2 parts of alpha pinene, 0.1-2 parts of beta pinene, 1-30 parts of limonene, 1-10 parts of sweet orange oil, 1-20 parts of lemon oil, 0.1-0.5 parts of myrcene, 0.1-2 parts of cinnamic aldehyde, 0.1-5 parts of cinnamon oil, 0.1-10 parts of citral, 0.1-5 parts of geranial, 1-10 parts of geranyl acetate, 0.1-5 parts of sinensal, 1-10 parts of citronellol, 1-10 parts of geranyl propionate, 0.1-5 parts of eugenol allylguajacol, 0.1-2 parts of ethyl maltol, 0.1-3 parts of furanone, 0.1-5 parts of raspberry ketone, 1-25 parts of cinnamyl alcohol, 1-10 parts of cinnamyl acetate, 1-15 parts of vanillin, 1-15 parts of ethyl vanillin and 0.1-2 parts of coffee extract. The electronic cigarette tar with a coca cola taste is rich and plump in fragrance, and can achieve an effect similar to a pleasant feeling brought by drinking coca cola. The invention further provides a preparation method of the electronic cigarette tar. The method is simple and easy to operate, and is suitable for industrial production.

The invention discloses a pineapple flavor essence. The raw materials of the pineapple flavor essence comprise 300.0 weight permillage of allyl caproate, 200.0 weight permillage of cyclohexyl allyl propionate, 30.0 weight permillage of ethyl acetate, 50.0 weight permillage of cyclohexyl allyl acetate, 30.0 weight permillage of geranyl hexanoate, 10.0 weight permillage of benzyl propionate, 5.0 weight permillage of petit grain oil, 2.0 weight permillage of acetic leaf alcohol ester, 10.0 weight permillage of vanillic aldehyde, 3.5 weight permillage of cinnamyl acetate, 100.0 weight permillage of ethyl butyrate, 20.0 weight permillage of ethyl oenanthate, 30.0 weight permillage of pentyl acetate, 30.0 weight permillage of cyclohexyl allyl butyrate,10.0 weight permillage of geranyl butyrate, 10.0 weight permillage of linalool, 10.0 weight permillage of citral dimethyl acetal, 0.5 weight permillage of dimethyl hydroxyl furanone, and 150.0 weight permillage of diethyl phthalate. The pineapple flavor essence of the invention is fit for perfuming products such as grease, emulsion, shampoo, and the like, and has the advantages of pure flavor, strong endurance, less dosage, and the like.

The invention relates to a preparation containing: (i) a composition containing (a) one, two or a plurality of compounds selected from the group consisting of (a1) alcohol monoterpenes of formula (I) in which R1 is H or methyl, R2 is H or C2-alkenyl, and R3 is a linear or branched, saturated or unsaturated hydrocarbon radical with 4 to 10 carbon atoms, and the enantiomers, diastereomers, racemates, solvates and physiologically compatible salts thereof, and / or (a2) bicyclic epoxy-monoterpenes, (b) at least two lactones of formula (II) in which R4 is H or methyl, R5 is a linear or branched, saturated or unsaturated hydrocarbon radical with 2 to 10 hydrocarbon atoms and n is the number 1 or 2, and the enantiomers, diastereomers and racemates thereof, (c) one, two or a plurality of solvents selected from the group consisting of ethanol, water, dipropylene glycol (DPG), diethyl phtalate (DEP), propylene glycol (PG), isopropyl myristate (IPM), isopropyl palmitate (IPP), triethyl citrate (TEC), triacetin (TRI), 1,2-Propanediol, 1,3-Propanediol, Propanethiol, Pentanediol, Hexanediol, Octanediol, Decanediol (SymClariol®), Dodecanol, 4-hydroxy-acetophenone (SymSave® H), glycerine, butylene glycol, pentylene glycol, hexylene glycol, decylene glycol, propylene carbonate, butylene carbonate, glycerine carbonate, 2-5 benzyl heptanol, lauryl alcohol, trimethyl-hydroxypentyl-isobutyrate, glyceryl-caprylate, ethylhexyl glycerine, benzyl benzoate (BB), and optionally (d) other flavouring agents or aromatic substances selected from the group consisting of 3-phenylbutanal (Trifernal), acetyl methyl carbinol, anethole, anisyl acetate, dihydroeugenol, linalyl formate, 2-methyldecanal, 2-benzyl-2-methylbut-3-ene nitrile (Ci-trowanil® B), 3-hexenyl acetate, styrallyl acetate, belanis, citronellal, cinnamyl acetate, rhubafuran, beta-ions, anther, prenyl acetate, 2-phenyl propanal, 4-(4-hydroxyphenyl)butan-2-one (Frambinon®), ethyl phenoxyacetate, isoralderine, gamma-terpinene, limonene, neocyclocitral, methyl lavender ketone, styrallyl propionate, phenyl ethyl propionate, limonenal, 4-isopentylcyclohexanol (Symrose®), 4-methyl-2-phenyl-3,6-dihydro-2H-pyran / 4-methylene-2-phenyl-tetrahydropyrane (Rosyrane super), hydrocitronitril, phenoxanol, isoamyl phenylacetate, damascone, silvial, nectaryl, ambroxide, acetyl pyrazine, trimethyl pyrazine, isoamyl acetate, para-cresyl methyl ether, filbertone, cyclohexyl acetate, heliotropin, acetophenone, anisaldehyde, para-methyl acetophenone, veratraldehyde, methyl anisate and vertoprenal; (ii) aldehydes of formula (III) in which R6 is a saturated or non-saturated, linear hydrocarbon radical; and / or (iii) free fatty acids of formula (IV), in which R7 is a linear or branched, saturated hydrocarbon radical.

The present invention discloses a method and an apparatus for separating benzaldehyde, phenylpropyl aldehyde, cinnamaldehyde, cinnamyl acetate and o-methoxycinnamaldehyde from cinnamon oil. The method comprises: (1) dewatering cinnamon oil, wherein vapor distillation is performed to obtain cinnamon oil, and anhydrous sodium sulfate is added, wherein a weight ratio of anhydrous sodium sulfate to cinnamon oil is 1:10-1:12; and (2) adding the treated cinnamon oil to a material tank, and controlling the rectification column temperature, the evaporation temperature, the reflux ratio and the vacuum degree so as to respectively obtain benzaldehyde having the purity of more than or equal to 60% and the yield of more than or equal to 50%, phenylpropyl aldehyde having the purity of more than or equal to 50% and the yield of more than or equal to 40%, cinnamaldehyde having the purity of more than or equal to 99% and the yield of more than or equal to 85%, cinnamyl acetate having the purity of more than or equal to 30% and the yield of more than or equal to 80%, and o-methoxycinnamaldehyde having the purity of more than or equal to 30% and the yield of more than or equal to 85%. The apparatus combines advantages of molecular distillation and rectification, such that the concentrations of benzaldehyde and other components are significantly increased, the product yield is significantly increased, the production cost is substantially reduced, and the low energy consumption and efficient separation of a plurality of heat-sensitive materials can be achieved at a low temperature.

The invention relates to strawberry essence for oil-based ink. The strawberry essence consists of strawberry essence, maltodextrin and starch sodium octenylsuccinate, wherein the strawberry essence consists of ethyl acetate, isoamyl acetate, ethyl caproate, ethyl butyrate, allyl hexanoate, leaf alcohol, cis-3-hexenyl acetate, decalactone, peach aldehyde, ethyl benzoate, geranyl acetate, citronellyl acetate, dihydrojasmonic acid methyl ester, hexyl salicylate, linalool oxide, trans-2-hexenol, eugenol, cinnamyl alcohol, cinnamyl acetate, beta-Ionone, vanillin, methyl cyclopentenolone, furanone, raspberry ketone, ethyl methylphenylglycidate, ethyl palmitate, benzyl benzoate and glycerol triacetate. The invention also provides a preparation method of the strawberry essence for the oil-based ink. The strawberry essence, the maltodextrin, the starch sodium octenylsuccinate and water are mixed; homogenizing and emulsification are performed; then, spray drying is carried out; particular strawberry essence is formed, so that the aroma retaining effect and the oil solubility of the essence are improved; the strawberry essence is applicable to perfuming of the oil-based ink.

The invention discloses a cultivation method for pleurotus eryngii and belongs to the cultivation field of pleurotus eryngii. The method comprises the following parts: straw, bean dregs, coal ashes, lime, ammonium ferrous sulfate, cottonseed casing, wood chips, cinnamyl acetate, orange peel powders, biogas residues and water. The method comprises the following preparation steps: A, adding straw, bean dregs, wood chips, orange peel powders and biogas residues into water, stirring and standing the mixture to obtain a mixed solution; B, adding coal ashes, lime, cottonseed casing, cinnamyl acetate and ammonium ferrous sulfate into the mixed solution obtained in the step A, and stirring the solution to make the solution to be pasty; C, machining the pasty solution into a cylinder and drying the cylinder at the temperature of 100-120 DEG C to obtain a pleurotus eryngii medium. According to the technical scheme of the invention, the compositions of the medium are extensive in source, low in cost and easily obtained. Cultivated pleurotus eryngii is good in growth vigor and obviously shortened in cultivation period. Therefore, the method is suitable for large-scale production.

The invention discloses a method for separating high-purity cinnamyl aldehyde and cinnamyl acetate from cinnamon oil. The method comprises the following steps of: (1) performing pre-treatment, specifically, taking the cinnamon oil obtained by extracting cinnamon branches and leaves via steam distillation as a raw material, and adding water-absorbed salt substances in the cinnamon oil to remove water; and (2) pouring the cinnamon oil after the pre-treatment is finished in the tower kettle of a rectification tower, controlling the temperature of the tower kettle, a reflux ratio and a vacuum degree, performing low-temperature and high-vacuum rapid rectification, and separating simultaneously to obtain two products, namely, high-purity cinnamyl aldehyde and cinnamyl acetate, wherein the purity of cinnamyl aldehyde is not less than 99%, and the yield thereof is not less than 80%; and the purity of cinnamyl acetate is not less than 95%, and the yield thereof is not less than 60%. With the adoption of the method disclosed by the invention, cinnamyl aldehyde can be prevented from being oxidized at a high temperature, thus increasing the yield and increasing the separation efficiency.

The present invention discloses perfume compositions that having a fragrance like that of Japanese apricot flowers. More specifically, disclosed is a perfume composition having a fragrance like that of white Japanese apricot flowers, which contains artificial synthetic substance florol, in addition to the main fragrant components of white Japanese apricot flowers, including benzaldehyde, benzyl acetate and benzyl alcohol, analyzed by an SPME method. Also disclosed is a perfume composition having a fragrance like that of red Japanese apricot flowers, which contains artificial synthetic substance phenylisohexanol, in addition to the main fragrant components of red Japanese apricot flowers, including benzaldehyde, benzyl acetate, benzyl alcohol, cinnamaldehyde, cinnamyl alcohol and cinnamyl acetate, analyzed by the SPME method. The perfume compositions emit a fragrance like the characteristic fragrance of natural Japanese apricot flowers and, at the same time, has high preference.

The invention discloses a method for carrying out isosynthesis on geraniol by adopting linalool, belonging to the technical field of turpentine deep processing. The method comprises the steps of adding linalool, cinnamyl acetate, an organic tin catalyst and a vanadium compound catalyst to a reaction kettle, heating the materials to 170-190 DEG C, stirring the materials for 8-12 hours and then carrying out hydrolysis, rectification at reduced pressure and discharging. The method has the advantages of simple process, small auxiliary material utilization amount and low cost, and reactions are easy to control.

This invention pertains to an anti-microbial, in particular anti-bacterial and / or anti-fungal composition comprising cinnamaldehyde, trans-2-methoxy cinnamaldehyde, cinnamyl acetate and linalool. In particular this composition is intended for preventing and / or treating microbial infection in an animal.

The invention discloses a preparation method for cinnamyl acetate. The steps of the method are as follows: A) cinnamic alcohols and acetic anhydrides are mixed for reaction according to a certain mol ratio; catalysts are taken to dissolve in the acetic anhydrides, and the temperature is preserved, and the cinnamic alcohols are dropwise added; B) after the addition of the cinnamic alcohols, the temperature is kept in the range of from 40 to 50 DEG C for reaction; C) after the heat preservation, the cinnamyl acetate products are obtained by the water washing and neutralization; D) the cinnamyl acetate products obtained undergo the fraction collection under the vacuum of negative 0.096 to negative 0.1Mpa, obtaining the cinnamyl acetate finished products; the invention has the advantages of simple method, convenient operation, low material costs, high yield and no environmental pollution, and is quite suitable for the industrialized production; moreover, the yield of the production of the cinnamyl acetate is as high as 88.6 percent.

The invention provides an essence with a tree moss extract function and a preparation technology thereof .The essence is prepared from, by mass, 10-30% of molecular distillation first-stage fraction of tree moss extract, 15-50% of molecular distillation second-stage fraction of tree moss extract, 10-40% of molecular distillation third-stage fraction of tree moss extract, 0.2-2% of geranyl acetate, 0.5-2.5% of cis-3-hexenyl acetate, 0.4-2% of menthyl acetate, 0.6-2.2% of cinnamyl acetate, 0.1-1.5% of 1% bread ketone, 0.8-5% of 1% damascenone, 0.2-1.5% of 1% 2,3,5-trimethyl pyrazine, 0.9-3% of 1% geranium oil, 15-40% of propylene glycol and 10-40% of edible alcohol .The fractions for essence compounding are derived from the tree moss extract and obtained through a molecular distillation technology, no waste liquid or waste gas is produced in the whole process, preparation is safe and environmentally friendly, and industrial batch production is easy to achieved; the natural property of the essence is ensured to the greatest possible, and the natural fragrance feature is provided for the product .

The invention provides application of plant essential oil in inhibiting mycete in the air. The plant essential oil is characterized in that cinnamon essential oil is mainly prepared from cinnamyl aldehyde, cinnamyl acetate, coumarin and benzaldehyde; oregano essential oil is mainly prepared from carvacrol, 5-methyl-2,4-diisopropyl phenol, thymol and 3-methyl-4-isopropyl phenol; clove essential oilis mainly prepared from eugenol, caryophyllene, humulene and caryophyllenol. In order to fully investigate the effect of the plant essential oil on the inhibition of the mycete in the air in a museum, the three kinds of plant essential oil are used for performing inhibition tests on penicillium oxalicum, penicillium herquei and aspergillus aculeatus respectively, and the three kinds of plant essential oil are compounded to perform synergistic effect inhibition tests on the penicillium oxalicum, penicillium herquei and aspergillus aculeatus respectively. Tests show that the three kinds of plant essential oil have obvious antibacterial effects on the three kinds of mycete either alone or in combination and have good application potential as an antifungal agent in the air.

The invention relates to the field of pharmaceutical synthesis and particularly, relates to processes for producing 3-amino crotonic acid cinnamyl ester and cilnidipine in a large scale. The process for producing 3-amino crotonic acid cinnamyl ester in a large scale comprises the following steps of: dropwise adding diketene in batches at a rate of dropwise adding 10kg of diketene in 30 to 40 minutes, wherein the amount of diketene added in each batch is not greater than 10kg; after detecting online that content of cinnamyl acetoacetate obtained by the reaction in each batch accords with the requirement, directly performing an amination reaction. Safety of a production workshop is ensured by adding diketene in batches; meanwhile, the reaction is guaranteed to be sufficiently performed by controlling the adding rate of diketene so as to ensure purity and yield of prepared 3-amino crotonic acid cinnamyl ester; moreover, by detecting purity of cinnamyl acetoacetate on line, use of distillation is avoided, so that industrial cost is further reduced.

The invention relates to an allylation method for catalyzing aromatic hydrocarbon by FeCl3. 6H2O, belonging to a synthesis method of allyl aromatic hydrocarbon. The method takes various aromatic hydrocarbons as raw material, the FeCl3. 6H2O as catalyst as well as cinnamyl acetate and cinnamyl alcohol as allylation reagent, and the finished product can be obtained by further reaction, concentration and purification, so that the allylation reaction can be realized. The allylation method has the characteristics of being simple in method, simple and convenient to operate, low in production cost, convenient to popularize and apply and the like. By the allylation of the aromatic hydrocarbon, the method leads functional group to be introduced, so that the complicated product molecule is further constructed, and the demand of synthesis pharmaceutical industry can be met.

The invention discloses a Pleurotus eryngii medium and a preparation method thereof, and belongs to the field of mushroom cultivation. The medium comprises, by mass, stalks, bean dregs, coal ash, lime, ammonium ferrous sulfate, cottonseed shells, sawdust, cinnamyl acetate, orange peel powder, biogas residues and water. The preparation method comprises the following steps: 1, selecting the stalks, the bean dregs, the sawdust, the orange peel powder and the biogas residues, adding the stalks, the bean dregs, the sawdust, the orange peel powder and the biogas residues to water, stirring obtained water, and standing the obtained water to obtain a mixed solution; 2, adding the coal ash, the cottonseed shells, cinnamyl acetate and ammonium ferrous sulfate to the mixed solution obtained in step 1, and stirring the obtained solution to form a paste; and 3, processing the paste obtained in step 2 to form cylinders, and drying the cylinders at 100-120DEG C to obtain the Pleurotus eryngii medium. Composition components of the Pleurotus eryngii medium have wide sources, and are cheap and easily available, and Pleurotus eryngii cultured by using the medium has good growth vigor and obviously shortened cultivation period, so the medium is suitable for large-scale production.

The invention provides a cassia flavor cigarette paper essence and a preparation method and an application. The cassia flavor cigarette paper essence is produced by mixing 20-40 parts of cinnamyl acetate, 5-15 parts of cinnamic acid, 90-100 parts of benzyl alcohol, 700-800 parts of cinnamic aldehyde, 2-4 parts of 10% cuminaldehyde, 1-3 parts of 10% salicylaldehyde, 4-6 parts of 1% acetyl, 4-6 parts of 1% 2,3-pentanedione, 10-30 parts of clove oil, and 50-200 parts of 95% alcohol. In the cigarette paper coating process, the essence is added to a coating liquid in a proportion of 3-6wt% of the coating liquid, and then the mixture is coated to the cigarette paper. The essence has a stratified fragrance, and the fragrance is in coordination with the cigarette flavor, giving the cigarette unique style; the essence is added to the cigarette paper, bringing the cigarette a prominent and lasting fragrance, and making up fragrance loss caused by reducing cigarette tar. In this way, cigarette quality is improved.

This invention pertains to an anti-microbial, in particular anti-bacterial and / or anti-fungal composition comprising cinnamaldehyde, trans-2-methoxy cinnamaldehyde, cinnamyl acetate and linalool. In particular this composition is intended for preventing and / or treating microbial infection in an animal.

The invention discloses an abalone mushroom liquid strain culture medium based on rhizoma polygoni cuspidate dreg. The culture medium is prepared from, by weight, rhizoma polygoni cuspidate dreg, abalone protein powder, soybean enzymolysis small molecule peptides, maltose, ribose, cinnamyl acetate, cuttlebone, nanoscale tourmaline powder, bacteria nanometer cellulose and the like. With maltose and ribose as the carbon sources and the soybean enzymolysis small molecule peptides and abalone protein powder as the nitrogen sources, through the combination of processed superfine-expansion rhizoma polygoni cuspidate dreg and rhizoma polygoni cuspidate dreg extracts, the abalone mushroom liquid strain culture medium is prepared; the culture medium is rich in nutrient, the medicinal functions of abalone mushroom can be enhanced, and rich raw materials of the abalone mushroom liquid strain culture medium are provided; in addition, due to the addition of bacteria nanometer cellulose and the high pressure homogenization treatment, the stability and uniformity of the liquid strain culture medium and the existence of micro-spaces in the culture medium are ensured, the effect of improving the quality of mycelium pellets can be achieved, and the quality of abalone mushroom liquid strain fruiting bodies is improved.

The invention discloses lipase L-1 and a coding gene and application thereof. The lipase gene l-1 is obtained from Streptomyces sp. SCSIO 13580 in a cloned mode, the nucleotide sequence of the lipase gene l-1 is shown as SEQ ID NO.1, the overall length of the lipase gene l-1 is 1005 bp, and the amino acid sequence of the coded lipase L-1 is shown as SEQ ID NO.2 and contains 334 amino acids in all. The lipase gene l-1 is cloned and connected with an expression vector pET-28a(+), then conversion is performed to obtain escherichia coli BL21 (DE3), and after culture and induced expression, the recombinant expression lipase L-1 is obtained. The lipase L-1 serving as a catalyst catalyzes a reaction between cinnamyl alcohol and an acyl donor, and cinnamyl acetate is prepared, wherein the yield of the obtained cinnamyl acetate can reach 48.3%. The lipase L-1 has the advantages of being high in stability and catalysis efficiency and can be applied to the fields of biological medicine, cosmetics, fine chemical engineering and the like.

The invention belongs to the technical field of spice preparation, and particularly relates to a spice composition with plum blossom fragrance. The invention provides a spice composition with a jade butterfly plum blossom fragrance. The spice composition comprises basic fragrance components including benzaldehyde, benzyl alcohol, benzyl acetate and eugenol, and a characteristic component benzyl benzoate. The invention further discloses a spice composition with the fragrance of Armeniaca mume f.alphandii (Carr.) Rehd. The spice composition comprises basic fragrance components including benzaldehyde, benzyl alcohol, benzyl acetate, cinnamyl alcohol and cinnamyl acetate, and a characteristic component eugenol. The invention also discloses a spice composition with the fragrance of Armeniaca mume var. mume f. purpurea. The spice composition comprises basic fragrance components including benzaldehyde, benzyl alcohol and eugenol, and characteristic components including methyl chavicol and methyl eugenol. The spice composition is high in smell identification degree, closer to natural plum blossom characteristic fragrance and fewer in formula component variety, the spice manufacturing costis greatly reduced, and the spice composition is more easily accepted by consumers.

The invention provides an additive used for quick-frozen pastries. According to the additive, L-cysteine hydrochloride, starch acetate, fumaric acid, sodium alginate, and xanthan gum are capable of improving pastry mouthfeel and reducing quick-frozen pastry secondary steaming cracking rate, but the effect is limited; and specific combination of catechinic acid, paeonol, cinnamyl acetate, and liriopesides B is capable of improving the mouthfeel of quick-frozen pastry after secondary steaming, and the mouthfeel is more close to that before quick freezing; and combination with a special production method disclosed in the invention is capable of reducing quick-frozen pastry secondary steaming cracking rate and improving product quality.

The present invention discloses a method and an apparatus for separating benzaldehyde, phenylpropyl aldehyde, cinnamaldehyde, cinnamyl acetate and o-methoxycinnamaldehyde from cinnamon oil. The method comprises: (1) dewatering cinnamon oil, wherein vapor distillation is performed to obtain cinnamon oil, and anhydrous sodium sulfate is added, wherein a weight ratio of anhydrous sodium sulfate to cinnamon oil is 1:10-1:12; and (2) adding the treated cinnamon oil to a material tank, and controlling the rectification column temperature, the evaporation temperature, the reflux ratio and the vacuum degree so as to respectively obtain benzaldehyde having the purity of more than or equal to 60% and the yield of more than or equal to 50%, phenylpropyl aldehyde having the purity of more than or equal to 50% and the yield of more than or equal to 40%, cinnamaldehyde having the purity of more than or equal to 99% and the yield of more than or equal to 85%, cinnamyl acetate having the purity of more than or equal to 30% and the yield of more than or equal to 80%, and o-methoxycinnamaldehyde having the purity of more than or equal to 30% and the yield of more than or equal to 85%. The apparatus combines advantages of molecular distillation and rectification, such that the concentrations of benzaldehyde and other components are significantly increased, the product yield is significantly increased, the production cost is substantially reduced, and the low energy consumption and efficient separation of a plurality of heat-sensitive materials can be achieved at a low temperature.

The invention discloses a special seasoning bag for traditional barbecue products. The special seasoning bag for traditional barbecue products includes in percent by mass: 10%-21% of an aldehyde compound, 7%-15% of organic acid compounds, 6%-14% of phenolic compounds, 3%-8% of cinnamyl acetate, 5%-13% of dihydrocoumarin, 0.2%-1% of 2-methyl-5,7-dihydrothieno[3,4-d]pyrimidine and the balance water.The invention discloses a preparation method and application method of the special seasoning bag for traditional barbecue products. The special seasoning bag has the advantages of maintaining the unique flavor of traditional barbecue products and reducing the content of processed hazardous matter at the same time.

The invention discloses lipase L-1 and a coding gene and application thereof. The lipase gene l-1 is obtained from Streptomyces sp. SCSIO 13580 in a cloned mode, the nucleotide sequence of the lipase gene l-1 is shown as SEQ ID NO.1, the overall length of the lipase gene l-1 is 1005 bp, and the amino acid sequence of the coded lipase L-1 is shown as SEQ ID NO.2 and contains 334 amino acids in all. The lipase gene l-1 is cloned and connected with an expression vector pET-28a(+), then conversion is performed to obtain escherichia coli BL21 (DE3), and after culture and induced expression, the recombinant expression lipase L-1 is obtained. The lipase L-1 serving as a catalyst catalyzes a reaction between cinnamyl alcohol and an acyl donor, and cinnamyl acetate is prepared, wherein the yield of the obtained cinnamyl acetate can reach 48.3%. The lipase L-1 has the advantages of being high in stability and catalysis efficiency and can be applied to the fields of biological medicine, cosmetics, fine chemical engineering and the like.

The invention discloses an insect repellent for solenopsis invicta, which is characterized by comprising the following raw materials in percentage by mass: 0.01-10% of mixed cinnamon essential oil, 1-10% of an emulsifier and the balance of water, wherein the mixed cinnamon essential oil is a mixture composed of Vietnamese cinnamon bark essential oil and cinnamyl acetate in a mass ratio of (5-45):4. A preparation method comprises the following steps: (1) weighing the raw materials; (2) adding cinnamyl acetate into Vietnamese cinnamon bark essential oil, and magnetically stirring to obtain mixed cinnamon essential oil for later use; (3) adding an emulsifier into water, and magnetically stirring to obtain an emulsifier aqueous solution; and (4) adding the mixed cinnamon essential oil into the emulsifier aqueous solution, and magnetically stirring to obtain the insect repellent.

The invention relates to a preparation method of cilnidipine. The invention provides a preparation method of cinnamyl 3-aminobut-2-enoate, which comprises the following step: carrying out amination reaction on cinnamyl acetoacetate and ammonium carbonate to obtain the cinnamyl 3-aminobut-2-enoate. On the basis, the invention further provides a method for preparing cilnidipine by taking the cinnamyl 3-aminobut-2-enoate as a raw material. The method provided by the invention is relatively low in reaction temperature, relatively short in reaction time, relatively high in product yield and purity,and simple in aftertreatment.

The application of plant essential oils to inhibit mold in the air in museums. The plant essential oils are cinnamon essential oils containing cinnamaldehyde, cinnamyl acetate, coumarin, and benzaldehyde; oregano essential oils mainly contain carvacrol, 5‑methyl ‑2,4‑Diisopropylphenol, Thymol, 3‑Methyl‑4‑Propylphenol; the main components of clove essential oil contain eugenol, caryophyllene, humulene, caryophyllene alcohol. In order to fully investigate the effect of the plant essential oils in inhibiting mold in the air in the museum, the three plant essential oils were used alone to conduct inhibition tests on Penicillium oxalicum, Penicillium hockii and Aspergillus aculeatus and the combination of three plant essential oils Synergistic inhibition tests were carried out on Penicillium oxalicum, Penicillium hockii and Aspergillus aculeatus. The test showed that the three kinds of plant essential oils used alone or in combination showed obvious antibacterial effects on the three molds, and had good application potential as an antifungal agent in the air.