231 results about "Cinnamic acid" patented technology

The invention belongs to the technical field of forest chemical industry and natural perfume extraction and separation, and particularly discloses a superheated steam distillation separation and recovery method for perfume components in cinnamon oil rectifying still residues. The method comprises the following steps: processing the cinnamon oil rectifying still residues by adopting a steam distillation method taking normal-pressure superheated steam as a desorption medium, carrying out condensation cooling and phase separation on distilled oil-water mixed gas, and collecting oily liquid or crystalline solid containing cinnamon spice components, and carrying out one or more physical isolation methods such as freezing crystallization, vacuum fractionation or rectification, recrystallization and the like to obtain natural cinnamon monomer spices such as o-methoxycinnamaldehyde, o-methoxycinnamic acid, phenethyl alcohol and the like. The method has the advantages of low equipment investment, simple and feasible operation, low production cost, clean and pollution-free process, good operation safety, high industrial application feasibility and the like.

The invention belongs to the technical field of industrial silane preparation, and provides a natural silane rotor and a preparation method and application thereof.The preparation method comprises the steps that a pyridoxal phosphate solution and a 4-amino ethyl cinnamate solution are mixed and then react to obtain pyridoxal phosphate cinnamyl ester; and mixing the pyridoxal phosphate cinnamyl ester solution and the amino silane solution, and reacting to obtain the natural silane rotor. The silane rotor has a good conjugated structure, is stable in chemical structure, can be stored for a long time, is good in light stability, and is not liable to cause a photobleaching phenomenon. Besides, conjugated single and double bonds capable of freely rotating exist in the molecular structure, a typical flexible intramolecular rotation characteristic is presented, the conjugated structure can freely rotate in a dilute solution, a surface sightseeing signal is weak, the free rotation phenomenon is limited in a thick solution, the surface sightseeing signal is strong, and the surface sightseeing signal is strong. Therefore, the device can be used as a molecular tool for monitoring the change of the thin consistency of the silane, and can provide real-time, lossless and visual detection support for the development of a silane modulation process.

The invention discloses a preparation method of ethyl 4-chloroacetoacetate, and belongs to the technical field of compound synthesis. The method comprises the following steps: by taking diketene as a raw material, adding a polymethylsilsesquioxane polymerization inhibitor into a dichloromethane solvent, introducing chlorine at low temperature, carrying out chlorination reaction to generate 4-chloroacetoacetic acid, then esterifying the 4-chloroacetoacetic acid with absolute ethyl alcohol to obtain a crude product, and finally distilling and purifying to obtain the product. The preparation method is characterized in that a polymethylsilsesquioxane polymerization inhibitor is added before chlorination reaction, the polymerization inhibitor is prepared by grafting a functional monomer containing a 3, 5-di-tert-butyl-4-hydroxycinnamic acid structure onto surface-ethenylated polymethylsilsesquioxane microspheres, and the polymethylsilsesquioxane polymerization inhibitor has both steric hindrance and free radical capture capability. The method can effectively inhibit the self-polymerization and copolymerization tendency of diketene, intermediates and products in a reaction system, obviously reduces the generation of by-products such as dichloro and polychloro, enables the product to be high in yield and good in purity, and meets the quality requirements of high-end medical intermediates.

The present relates to compounds of formula (I) as defined herein. The compounds are suitable for protection against ultraviolet (UV) radiation. Further, the present invention is concerned with compositions comprising at least one compound of formula (I) and uses of said compounds as UV filters and light stabilizing agents.

The invention discloses a thin-layer chromatography identification method for cinnamon and ginger in vitality-preserving granules, and belongs to the technical field of pharmaceutical analysis. Aiming at the problems of step-by-step detection, serious cinnamic acid tailing and dependence on toxic solvents in the existing method, the method comprises the following steps: dissolving vitality-preserving particles in water, carrying out ultrasonic treatment, extracting filtrate by using absolute ether, merging extract liquor, evaporating to dryness, and dissolving by adding ethyl acetate to obtain a test solution; preparing a cinnamon reference medicinal material solution and a cinnamic acid and 6-gingerol reference substance solution; a silica gel GF254 thin-layer plate is adopted, petroleum ether-normal hexane-ethyl formate-formic acid is used as a developing solvent for developing, and inspection is conducted under the ultraviolet light of 254 nm and the ultraviolet light of 365 nm respectively. Cinnamon and ginger can be synchronously identified, spots are clear and free of trailing, no toxic solvent exists, durability is high, cost is low, and an accurate and reliable basis can be provided for quality control of the vitality-preserving granules.

The application discloses application of 2-amino isophthalic acid (2-AIA) as a MALDI matrix in characterization of oligosaccharide additives in food. The skeleton structure of 2-AIA has a strong ultraviolet absorption group and a protonation site, which is beneficial to laser energy transmission and desorption ionization process of the measured object. Meanwhile, 2-AIA has multiple polar functional groups, which can effectively enhance the directional combination of the hydroxyl group of 2-AIA and oligosaccharide, and improve the anti-interference ability of impurities in a complex system. In addition, 2-AIA and a traditional organic matrix alpha-cyano-4-hydroxycinnamic acid (CHCA) are combined as a binary matrix (CHCA / 2-AIA), which can play a synergistic role of the double matrix, significantly improve the detection sensitivity of oligosaccharide. On the other hand, the combination of CHCA and 2-AIA with different pH values can significantly improve the uniformity of the co-crystallization, and improve the accuracy and reproducibility of quantitative detection.

The invention belongs to the technical field of biological enzymes, and particularly relates to olefine acid reductase and application thereof in synthesis of indole-3-propionic acid. The invention relates to a clostridium sporogenes source cinnamic acid reductase, which is characterized in that the amino acid sequence of the clostridium sporogenes source cinnamic acid reductase is as shown in SEQ ID NO: 1. The clostridium sporogenes source cinnamate reductase is obtained by screening different enzyme sources, and compared with the previously reported acrylate reductase, the clostridium sporogenes source cinnamate reductase does not need the assistance of electron transfer protein, can reduce the energy load of an engineering bacterium host and promote the generation efficiency of a target product, and has a good industrial application prospect.

The invention relates to a process for the manufacturing of biobased 3-methyl-delta-valerolactone (3MdVL) and 3-methyl-1,5-pentanediol (3MPD) via one- pot hydrogenation of anhydromevalonolactone (aMVL) in the presence of a Raney- Nickel catalyst. The hydrogenation occurs without solvent at a temperature from 120ºC-180ºC, preferably at 130ºC-170ºC and a pressure between 15-30 bar, preferably at a pressure between 18 and 22 bar. The hydrogenation time may vary between 3 and 25 hours, preferably between 6 and 24 hours.

The invention discloses a corrosion-resistant polypropylene insulated cable and a preparation process thereof, and belongs to the technical field of cables. The corrosion-resistant polypropylene insulated cable sequentially comprises a cable core, a wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer from inside to outside, the inner sheath layer and the outer sheath layer are both made of a corrosion-resistant polypropylene cable material; the corrosion-resistant polypropylene cable material is prepared from the following raw material components: polypropylene, POE (Polyolefin Elastomer), a plasticizer, a composite flame retardant, a heat-conducting filler, a lubricant, an ultraviolet light absorber and a nucleating agent, the composite flame retardant is prepared from the following raw materials: cyanuric chloride, 4-hydroxymethyl-1-oxo-1-phospha-2, 6, 7-trioxabicyclo [2.2. 2] octane, hydroxyl N-alkoxy hindered amine, ethidene diamine and N-(2-aminoethyl) maleimide; the heat-conducting filler is prepared from the following raw materials: graphene oxide, a silane coupling agent, boron nitride and 3, 5-di-tert-butyl-4-hydroxycinnamic acid; the corrosion-resistant polypropylene insulated cable prepared by the invention is relatively good in corrosion resistance, heat dissipation performance, flame retardance, thermo-oxidative aging resistance and mechanical property.

To provide a rubber composition to be a raw material of a vulcanized rubber excellent in steering stability and wet grip performance when used as a rubber part of a pneumatic tire, especially a pneumatic tire for motor sports.SOLUTION: A rubber composition comprising 100 parts by mass of a rubber ingredient containing at least a diene rubber, 0.1 to 10 parts by mass of a cinnamic acid compound having a hydroxyl or methoxy group-substituted aromatic ring, and 40 to 140 parts by mass of carbon black having a nitrogen-adsorption specific surface area of 140 to 250m2 / g. The cinnamic acid compound is a naturally occurring compound and is preferably at least one of 3, 4-dihydroxycinnamic acid and 3, 4-dimethoxycinnamic acid.SELECTED DRAWING: None

The invention relates to the technical field of preparation of composite packing materials, and particularly discloses a carbon-based stone-plastic composite packing material based on industrial solid waste as well as a preparation method and application of the carbon-based stone-plastic composite packing material. Comprising the following steps: S1, preparing the following raw materials in parts by weight: 90-96 parts of polyvinyl chloride, 5-10 parts of functionalized core-shell particles, 8-10 parts of sulfhydrylated bamboo fibers, 0.8-1.2 parts of a lubricant, 1.5-3.5 parts of a heat stabilizer, 0.2-0.4 part of a photoinitiator and 10-12 parts of an organic solvent; s2, preparing a mixed material; functionalized core-shell particles and sulfhydrylated bamboo fibers are added, outer layers of the functionalized core-shell particles are prepared by modifying titanium dioxide structures through KH-560 and then chemically bonding the modified titanium dioxide structures with alpha-methylcinnamic acid, cores are pretreated coal gangue, and the pretreated coal gangue not only has high specific surface area and active hydroxyl, but also can be chemically bonded with the sulfhydrylated bamboo fibers, so that the specific surface area of the core-shell particles is increased, and the specific surface area of the core-shell particles is increased. Heavy metal ions in the composite packing material can be effectively adsorbed, and the mechanical property is improved.

The invention relates to an aroma-carrying multifunctional paper-based material and application thereof, and the aroma-carrying multifunctional paper-based material is prepared by a method comprising the following steps: reacting a carboxylic acid aroma substance with a chlorination reagent to prepare an acyl chloride derivative; the carboxylic acid flavor substance is p-methoxycinnamic acid or a combination of cinnamic acid and p-methoxycinnamic acid; mixing the obtained acyl chloride derivative with plant pulp and a catalyst, and carrying out esterification reaction to obtain carboxylic acid flavor substance grafted plant pulp; and making paper by taking the obtained carboxylic acid aroma substance grafted plant pulp as a raw material to obtain the aroma-carrying paper-based material. Specific carboxylic acid flavor substances are firmly connected to a plant fiber skeleton in a covalent bonding manner, so that long-acting slow release of fragrance can be realized, and the problems of easiness in volatilization, short fragrance retention time and the like in a traditional physical adding manner are effectively solved; meanwhile, the physical characteristics and combustion characteristics of the paper-based material prepared from the chemically modified cellulose are also optimized and improved, so that an idea is provided for developing a novel functional paper-based material.

[Problem] To provide a matsutake primordium having a high methyl cinnamate content and a method capable of obtaining such a matsutake primordium having a high methyl cinnamate content at an artificially high yield. [Solution] Cells having the ability to form a primordium that have been isolated from matsutake fruiting bodies are cultured in a medium containing a protein degradation product and having a specific phenylalanine concentration.

This invention discloses a multi-effect sunscreen agent and its preparation method, relating to the field of cosmetic technology. This invention adds vetiver root extract, winged fruit oil, and rice bran oil extract to existing conventional chemical sunscreen ingredients, which not only reduces the amount of isoamyl methoxycinnamate, ethylhexyl triazine ketone, methylene bis-benzotriazolyl tetramethylbutylphenol, and bis-ethylhexyloxyphenol methoxyphenyl triazine used in existing chemical sunscreens, but also synergistically increases the sun protection effect. The active ingredients of this multi-effect sunscreen agent are plant-derived substances, making the ingredients safe and mild. Furthermore, the preparation method is simple, the ingredients are readily available, and it has broad market application prospects.

The purpose of the present invention is to: use a relatively simple preparation method to provide a hollow particle of which the decomposition product is a component contained in a plant or a derivative thereof; and provide a method for producing said hollow particle. This purpose can be achieved by means of, inter alia, a hollow particle containing a plurality of (poly)glycerol ester compounds which are reaction products of a cinnamic acid and / or cinnamic acid derivative represented by general formula (1) (wherein each among R1-R5 independently represents any of a hydrogen atom, a C1-6 alkyl group, a C1-6 alkoxy group, a nitro group, an amino group, an alkylamino group, or a hydroxyl group, and X represents any of a hydroxyl group, fluorine, chlorine, bromine, or iodine) and a (poly)glycerol having an average degree of polymerization of 1-40, wherein at least some of the cinnamoyl groups that are included in (poly)glycerol ester compounds and derived from the cinnamic acid or from the cinnamic acid derivative are photodimerized.

The present invention provides a biomass-derived polyester compound useful as a rubber material or an adhesive material, the compound including a multiple bond in the molecule. By synthesizing an ester compound composed of a hydroxycinnamic acid and a fatty acid, and carrying out polycondensation reaction using the ester compound as a monomer, a polyester compound containing cinnamic acid and a ricinoleic acid derivative that are alternately linked to each other can be efficiently obtained. For example, an ester compound of General Formula (1) is produced. (In the formula, the substituents R1 and R2 each represent a hydrogen atom or a methoxy group; the substituent R3 represents an alkyl group or an alkenyl group; and n represents an integer of 10 to 100).

The application provides a construction method for HPLC content determination of Kaempferia galanga medicinal material decoction pieces, standard decoction and formula granules, comprising the following steps: A) dissolving and extracting raw materials of the test sample by using a solvent to obtain a test solution; B) determining the test solution by using high performance liquid chromatography to obtain HPLC characteristic chromatograms of the Kaempferia galanga medicinal material decoction pieces, the standard decoction and the formula granules; and the high performance liquid chromatography chromatographic conditions are as follows: a C 18 column is used as the chromatographic column; a mobile phase A is acetonitrile solution; a mobile phase B is 0.1% phosphoric acid aqueous solution; and gradient elution is adopted. The application adopts the high performance liquid chromatography, selects acetonitrile-0.1% phosphoric acid solution as the mobile phase for gradient elution, takes cinnamic acid, 4-methoxycinnamic acid and ethyl p-methoxycinnamate as reference substances, establishes an HPLC content determination method for the Kaempferia galanga medicinal material decoction pieces, the standard decoction and the formula granules, and provides more scientific technical means for controlling the medicinal quality of the Kaempferia galanga medicinal material decoction pieces, the standard decoction and the formula granules.

The present relates to compounds of formula (I) as defined herein. The compounds are suitable for protection against ultraviolet (UV) radiation. Further, the present invention is concerned with compositions comprising at least one compound of formula (I) and uses of said compounds as UV filters and light stabilizing agents.

The present application provides a kind of compound composition for preventing and treating plant wilt, the composition composition includes 4-hydroxy cinnamic acid and thymol, mass ratio is 1:1~1:2;The mass ratio of the composition is 1:1, the concentration of the composition is 60~300 μg / mL;The mass ratio of the composition is 1:2, the concentration of the composition is 50~200 μg / mL;The present application can inhibit the growth of pepper fusarium oxysporum f.sp.cubense mycelium, spore germination and sporulation, and can play a synergistic effect.The composition in the present application can significantly reduce the incidence of wilt in pot experiment.Compared with the prior art, the present application aims to reduce the use of chemical pesticides by low-cost, safe and efficient plant-derived antibacterial compounds.

This invention provides a quality testing method for Linggui Zhugan preparations, including methods for testing the quality of Linggui Zhugan granules and mixed powders of Linggui Zhugan granules. The method includes constructing characteristic chromatograms and determining the content of cinnamic acid and glycyrrhizic acid using liquid chromatography. The liquid chromatography uses acetonitrile as mobile phase A and 0.1% formic acid solution as mobile phase B, and performs gradient elution according to regulations. This method detects the quality of Linggui Zhugan preparations through multiple indicators, establishes quality standards for Linggui Zhugan preparations, and achieves effective quality control, laying a solid foundation for stable quality.

The application discloses a kind of phenylacrylamide derivatives and preparation method and purposes thereof, belong to organic synthesis chemistry and pesticide technical field.Phenylacrylamide derivatives are prepared by condensation reaction from cinnamic acid or its derivatives and benzimidazole derivatives.Biological activity test shows that the compounds exhibit different degrees of inhibitory activity on rice sheath blight pathogen, barley root rot pathogen, wheat scab pathogen and brassica rapa sclerotinia pathogen, and can be used for preparing fungicide for preventing and treating agricultural plant diseases.

The invention relates to the technical field of PET plastic, in particular to an ultraviolet absorbent and PET plastic. The ultraviolet absorbent is prepared by the following method: in a protective gas atmosphere, dissolving alpha-cyano-4-hydroxy-3-alkoxy alkyl cinnamate, inorganic alkali and an epoxy chain extender in a polar aprotic solvent, stirring and reacting at 100-120 DEG C for 2-8 hours, and after the reaction is finished, sequentially performing acidification, suction filtration, washing and drying treatment. According to the scheme provided by the invention, the dispersion stability of the ultraviolet absorbent in a PET matrix can be effectively improved, the migration and precipitation risk is reduced, and meanwhile, the advantage of high transparency of the material is kept.

An adhesive, and / or a biopolymer that contains Cinnamon and / or cinnamic acid, Tee Tree Oil. Rosemary or other natural essential oil or essence. In at least one embodiment the wt % of Cinnamon is 0.4%. In at least one embodiment the wt % of cinnamic acid is at least 5%. In at least one embodiment the wt % of cinnamic acid is 7%. In at least one embodiment the wt % of cinnamic acid is at least 10%. In addition, there is a process for applying a natural biocide. The adhesive can be combined with paper products, corrugated cardboard or building materials such as wood panels.

The invention provides a targeted broad-spectrum corrosion and scale inhibitor for oilfield produced water as well as a preparation method and application of the targeted broad-spectrum corrosion and scale inhibitor. The targeted broad-spectrum corrosion and scale inhibitor is prepared from the following components in parts by weight: 30 to 40 parts of thioureido imidazoline grafted multipolymer mixed solution, 5 to 10 parts of diethyl triamine pentaacetic acid, 1 to 2 parts of NaOH, 2 to 4 parts of sodium ethylene diamine tetra (methylene phosphonate), 2 to 3 parts of oxalic acid, 1 to 2 parts of salicylic acid, 2 to 5 parts of cinnamic acid, 1 to 4 parts of citric acid and 40 to 50 parts of water. The corrosion and scale inhibitor has amide groups and a large number of N and O groups with high polarity, and the adsorption capacity of the corrosion inhibitor is remarkably improved; by designing the molecular structure of the multipolymer scale inhibitor, the content of carboxylate ions is increased, a sodium allysulfonate monomer is introduced, a scale inhibitor group containing multiple ligands is synthesized, the calcium tolerance of the components of the copolymer scale inhibitor under high salinity is improved, and a solubilizer and a synergist are compounded, so that the scale inhibitor has a good scale inhibition effect on calcium, barium and strontium.

The invention provides an improved engineered phenylalanine ammonia lyase which can be used for preparing a chiral amine compound, in particular for asymmetrically synthesizing L-2-chloro-phenylalanine. Compared with a wild-type enzyme corresponding to SEQ ID NO: 2, the engineered phenylalanine ammonia lyase polypeptide has better activity and / or stability, can be used for asymmetrically preparing chiral amine compounds with extremely high stereoselectivity, particularly can be used for more efficiently catalyzing o-chloro-cinnamic acid to prepare L-2-chloro-phenylalanine, can accept various ammonia donors, and can be used for preparing the chiral amine compounds. Such as ammonium carbonate, ammonia water and ammonium chloride.

The invention discloses a nano composition of pterostilbene, a preparation method of the nano composition, and application of the pterostilbene in preparation of an anti-hair loss product. Comprising the following components in percentage by mass: 0.1-25% of pterostilbene, 0.1-30% of polyol ether, 0.1-8% of terpene essential oil, 0.5-30% of a flexible agent, 0.1-20% of phospholipid and / or phospholipid derivative, 0-2% of honokiol, 0-3% of cinnamic acid, 0-35% of an additive and the balance of water. The invention proves that the pterostilbene has an excellent anti-hair loss effect and has relatively strong 5 alpha-reductase inhibitory activity, and the nano composition containing the pterostilbene, honokiol and cinnamic acid can synergistically enhance the 5 alpha-reductase inhibitory and anti-hair loss effects of the pterostilbene, and meanwhile, the nano composition enhances the solubility and stability of the pterostilbene, so that the anti-hair loss effect of the pterostilbene is improved, and the anti-hair loss effect of the pterostilbene is improved. The application of the pterostilbene is expanded.

The invention provides a herbicide for preventing and treating cyperus rotundus in cooperation with glyphosate. The herbicide is prepared from bacillus velezensis fermentation liquor, phenolic acid and glyphosate. The phenolic acid comprises any one or a combination of more of p-coumaric acid, cinnamic acid, p-hydroxybenzoic acid and caffeic acid. The bacillus velezensis fermentation liquor and phenolic acid components are introduced and form a synergistic effect with the glyphosate, so that the dosage of a single dosage of the glyphosate is reduced, the control effect is guaranteed, meanwhile, the potential pressure of chemical pesticide input on the ecological environment is reduced, and the environmental compatibility of a weeding system is improved.

The application discloses a compound flower and fruit fragrance type latent fragrance compound, a preparation method and application and an application method, and has the following general formula: wherein R represents or. In the technical scheme, 2-amino methyl benzoate is used as raw material, and two acylated derivatives are prepared through acylation reaction. The two compounds are stable in chemical properties, and can release 2-amino methyl benzoate and phenylacetic acid (cinnamic acid) when pyrolyzed at high temperature, and can be applied to cigarettes as stable fragrance precursors to improve smoke and highlight product characteristics.

The invention discloses a preparation method and application of a novel benzyl cinnamate-vinyl toluene (PVT) mixed matrix neutron / gamma discrimination plastic scintillator. The plastic scintillator is composed of a polymer matrix, a main fluorescent dye, a secondary fluorescent dye, a cross-linking agent and an initiator, the polymer matrix is benzyl cinnamate (RG) and vinyl toluene, the main fluorescent dye is 2, 5-diphenyloxazole (PPO), the secondary fluorescent dye is 7-diethylamino-4-methylcoumarin (MDAC), and the initiator is an initiator. The crosslinking agent is divinyl benzene (DVB), and the initiator is azodiisobutyronitrile (AIBN). The prepared plastic scintillator is polymerized based on a novel organic polymer matrix, and has good transparency. Compared with a plastic scintillator of the same type, the preparation time is greatly shortened by using the substrate, and the preparation efficiency is improved.

This application relates to the field of PET plastics technology, and more particularly to a UV absorber and PET plastic. The UV absorber is prepared by the following method: under a protective gas atmosphere, alkyl α-cyano-4-hydroxy-3-alkoxycinnamic acid, an inorganic base, and an epoxy chain extender are dissolved in a polar aprotic solvent, and the mixture is stirred and reacted at 100°C~120°C for 2~8 hours. After the reaction, acidification, filtration, washing, and drying are performed sequentially. The solution provided in this application can effectively improve the dispersion stability of the UV absorber in the PET matrix, reduce the risk of migration and precipitation, and maintain the advantage of high material transparency.