135 results about "Cinnamaldehyde" patented technology

The invention discloses a zinc-bromine flow battery multifunctional negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: uniformly stirring and mixing a solvent, deionized water and a cosolvent, adding an electrolyte, stirring until the electrolyte is completely dissolved, then adding a supporting electrolyte and a negative electrode additive, stirring until the supporting electrolyte and the negative electrode additive are completely dissolved, and obtaining the zinc-bromine flow battery multifunctional negative electrode electrolyte. The multifunctional negative electrode electrolyte of the zinc-bromine flow battery is obtained; the negative electrode cosolvent is dimethylformamide; and the negative electrode additive is at least one of saponin and cinnamyl aldehyde. Saponin molecules are adsorbed on the surface of the zinc electrode, and electronegative carboxyl groups of the saponin molecules form an electrostatic repulsion net in an electric double layer, so that zinc ions are forced to be uniformly dispersed, local ion concentration hot spots are eliminated, and dendritic crystal nucleation is inhibited from the source. In cinnamyl aldehyde, the strong electronegativity of oxygen atoms and the electronegativity of aldehyde oxygen are far higher than those of hydrogen, so that electrons are strongly attracted, adjacent carbon atoms are positively charged, polar adsorption sites are formed, the hydrogen evolution reaction is effectively inhibited, and the stability and the cycle life of the battery are greatly improved.

The invention belongs to the technical field of food packaging and fresh-keeping materials, and discloses an ethylene adsorption and pH / pectinase double-response intelligent antibacterial composite film as well as a preparation method and application thereof. The composite film comprises a base film and a functional carrier distributed in the base film, the functional carrier is a material ZIF-8-cinnamyl aldehyde-pectin capable of adsorbing ethylene and responding to pH and pectin, and the base film comprises a film-forming polymer and a natural antibacterial agent. According to the composite film, efficient adsorption of ethylene released in the storage period of fruits and vegetables is achieved through a porous structure of ZIF-8, meanwhile, a synergistic effect is formed by an acid environment naturally generated in the fruit and vegetable ripening and rotting process and pectinase, and intelligent slow release of cinnamyl aldehyde loaded on ZIF-8 is accurately triggered; cinnamyl aldehyde can form a double-channel intelligent antibacterial system with the natural antibacterial property of chitosan in a film base material and the metal ion antibacterial property of ZIF-8, maturation and aging of typical respiratory climacteric fruits and vegetables can be remarkably delayed, and the antibacterial film has extremely high industrial application potential.

The invention relates to the technical field of high polymer materials, in particular to a degradable PHA tableware material and a preparation method thereof. The degradable PHA tableware material overcomes the problem that the degradable PHA tableware material is poor in mechanical property and antibacterial property. The preparation method comprises the following steps: drying polyhydroxyalkanoate, poly (butylene succinate), acetylated lignin, nano-zinc oxide, chitosan oligosaccharide and hexagonal boron nitride, carrying out melt extrusion on the dried materials, maleic anhydride grafted PHA, acetyl tributyl citrate and cinnamyl aldehyde in a double-screw extruder, carrying out injection molding, and carrying out plasma treatment activation. Polyurethane antibacterial slurry containing silver-loaded zeolite is sprayed, the tableware material with the body-surface synergistic enhancement function is finally obtained, and the impact strength, rigidity and antibacterial rate of the material are improved.

The invention relates to the technical field of pharmaceutical analysis, in particular to a thin-layer chromatography identification method of vitality-preserving decoction and a preparation thereof. Comprising the following steps: S1, extracting a sample to be detected by using diethyl ether, and preparing a test solution; s2, preparing a cinnamaldehyde reference substance solution and a 6-gingerol reference substance solution; the method further comprises at least one of the steps S3 and S4; s3, dripping the test solution and the cinnamaldehyde reference solution on the same thin-layer plate, developing with a first developing solvent, and identifying the cinnamon; the first developing solvent comprises petroleum ether and ethyl acetate in a volume ratio of (15-20): 3; s4, dripping the test solution and the 6-gingerol reference substance solution on the same thin-layer plate, developing with a second developing solvent, and identifying the ginger; the second developing solvent is prepared from petroleum ether, trichloromethane and ethyl acetate according to the volume ratio of (2-4): (1-2): (1-3). The method is good in overall separation effect, clear in spots, good in specificity and durability, and capable of identifying the medicine flavors of cinnamon and ginger in the vitality-preserving decoction and the preparation thereof.

The present application relates to a kind of pharmaceutical composition for treating type 2 diabetes and its application.The pharmaceutical composition includes icariin, hydroxymethyl coumarin and cinnamaldehyde, by three-component synergistic effect, simultaneously act on insulin resistance, pancreatic beta cell apoptosis and systemic metabolic inflammation three type 2 diabetes core pathological links, auxiliary reduce serum lipid level, and reduce drug-related liver injury risk, good safety.Animal experiment results show that three-drug combination group can effectively reduce blood sugar (decrease about 50%), significantly improve islet structure atrophy, restore hepatocyte index arrangement, reduce glomerular hypertrophy, significantly reduce serum TG and CHOL level (P<0.05) and inflammatory factor IL-6 and TNF-alpha level (P<0.05), and avoid the hepatotoxicity risk (ALT / AST restores to close to normal level) of hydroxymethyl coumarin.The present application is composed of three kinds of natural monomers with clear structure, and has clear components and controllable quality, which provides a more optimal comprehensive treatment strategy for the treatment of type 2 diabetes and its complications.

This invention discloses a quantitative detection kit for arginine peptidase, a qualitative detection kit for arginine peptidase, and their usage methods. The quantitative detection kit utilizes the specific substrate Nα-benzoyl-DL-arginine-4-ylbenzamide hydrochloride, which can be hydrolyzed by arginine peptidase to 4-ylbenzamide. 4-ylbenzamide has a maximum absorption peak at 405 nm, and the specific arginine peptidase activity can be rapidly detected at room temperature using spectrophotometry. The qualitative kit utilizes the specific substrate Nα-benzoyl-DL-arginine-β-naphthamide hydrochloride, which can be hydrolyzed by arginine peptidase to p-β-naphthamide. β-naphthamide combines with 4-(dimethylamino)cinnamaldehyde to form a compound that is visible to the naked eye as a pink color. The disulfide bond cleaving agent cuts the mucus disulfide bonds, exposing bacterial enzyme sites, and the synergistic effect of the enzyme activator enhances the reaction rate of arginine peptidase hydrolysis of the substrate, significantly improving the detection sensitivity of arginine peptidase in tongue coating samples.

The application belongs to the technical field of antibacterial medicine, and particularly relates to a cinnamaldehyde-modified polypyridine ruthenium complex for inhibiting hemolysis, a preparation method and application thereof. The cinnamaldehyde-modified polypyridine ruthenium complex has a structure as shown in formula I. 1 , formula I 2 or formula I 3 The cinnamaldehyde-modified polypyridine ruthenium complex can effectively reduce the hemolysis of red blood cells caused by toxins released by Staphylococcus aureus, and the ruthenium complex does not induce the drug resistance of bacteria, and can significantly increase the sensitivity of Staphylococcus aureus to aminoglycoside antibiotics.

The invention provides a micro-nano porous multi-principal element alloy material, a preparation method thereof and application of the micro-nano porous multi-principal element alloy material in electro-catalysis cinnamyl aldehyde hydrogenation. The preparation method of the micro-nano porous multi-principal element alloy material comprises the following steps: uniformly mixing three or more than four element raw materials of Co, Cr, Fe, Ni and Cu, and carrying out smelting, suction casting, cutting and annealing to obtain an alloy sheet; carrying out vacuum tube sealing on the alloy sheet and zinc particles, and carrying out a heating reaction to obtain a zincized principal element alloy; carrying out a metal Zn removal reaction in an argon-hydrogen mixed gas atmosphere to obtain a porous multi-principal-element alloy; and the porous multi-principal-element alloy is subjected to cyclic voltammetry treatment in a mixed solution of isopropanol and an acetic acid buffer solution, and the micro-nano porous multi-principal-element alloy material is obtained through washing and drying. The method is easy and convenient to operate, the production period is greatly shortened, and batch production capacity is achieved. The prepared porous multi-principal element alloy material shows excellent catalytic activity and stability in electro-catalysis cinnamyl aldehyde hydrogenation.

The invention discloses a cinnamyl aldehyde microcapsule packaging bag and application thereof, and belongs to the technical field of food packaging and corrosion prevention. According to the invention, the essential oil microcapsules containing cinnamyl aldehyde are packaged by non-woven fabric packaging so as to ensure the normal volatilization and antibacterial and antiseptic effects of the product; through further vacuum packaging, the cinnamyl aldehyde-containing microcapsules are packaged to create a closed and oxygen-free environment, so that the essential oil is prevented from freely volatilizing and being oxidized by air; and finally, the sealing property of the cinnamyl aldehyde-containing microcapsule and the use convenience of the product are further ensured through the self-sealing bag packaging. According to the packaging bag, safe storage of the volatile preservative containing microcapsules can be achieved, and the packaging bag has the effects of being convenient to use, achieving slow-release bacteriostasis and enhancing food preservation.

The invention discloses a salmonella virulent bacteriophage vBSalPNW15 and application thereof, the bacteriophage is separated from farm sewage, belongs to a long-tail bacteriophage family, has a regular icosahedron head and a long-tail structure, and keeps stable under the conditions that the pH is 4-13 and the temperature is 40-60 DEG C. Genomic analysis shows that the kit does not contain virulence genes and drug-resistant genes and is good in safety. The bacteriophage and cinnamyl aldehyde are combined to be used for preventing and treating salmonella infection, both the bacteriophage and cinnamyl aldehyde show a remarkable synergistic bacteriostatic effect (FICI = 0.5) in vitro and in vivo, and the bacteriophage and cinnamyl aldehyde can effectively inhibit growth of multi-drug-resistant salmonella, remove biological membranes, relieve tissue pathological damage and remarkably improve the survival rate of chicks. The invention provides a safe and efficient antibiotic replacement scheme for preventing and treating salmonella infection, and is suitable for the fields of livestock and poultry breeding and food safety.

The invention provides a preparation process of (2E)-(3-hydroxy-4-methoxyl) cinnamyl aldehyde. The preparation process comprises the following steps: (1) adding 3-hydroxy-4-methoxyl benzaldehyde into an alkaline aqueous solution, and dissolving the 3-hydroxy-4-methoxyl benzaldehyde for later use; (2) introducing the solution obtained in the step (1) into a first inlet of a continuous flow reactor, wherein the flow velocity is 150.0-220mL / min; a vinyl acetate or acetaldehyde solution is introduced into a second inlet of the continuous flow reactor, the flow velocity is 10-30 mL / min, the retention time of the reaction solution in the continuous flow reactor is 5-10 min, and the reaction temperature is 50-100 DEG C; (3) adding reaction liquid of the continuous flow reactor into a reaction kettle for quenching under stirring; (4) after reaction quenching, filtering and collecting a precipitated solid crude product; (5) refluxing the obtained crude product in methanol, cooling, filtering and collecting the separated solid; and drying in vacuum until the weight is constant to obtain the (2E)-(3-hydroxy-4-methoxyl) cinnamyl aldehyde. According to the process, generation of dark impurities is avoided, the appearance quality and yield of the product are improved, continuous flow reaction is adopted, amplification is easy, and the amplification effect is avoided.

The invention discloses low-melting-point copolyester and a preparation method thereof, and belongs to the technical field of hot-melt polyester. The low-melting-point copolyester prepared by the invention comprises the following raw material components in parts by mass: 90-97 parts of a low-melting-point copolyester base material and 3-10 parts of a toughening agent, wherein the low-melting-point copolyester is obtained by melt polycondensation of terephthalic acid, 1, 4-butanediol, a flame-retardant monomer and lactic acid; the flame-retardant monomer is obtained by reacting amino acid diethyl ester with cinnamyl aldehyde and then reacting with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the toughening agent is obtained by copolymerizing glycidyl methacrylate, potassium 3-sulfopropyl methacrylate, hydroxyethyl methylacrylate and glyceryl trihydroxypropyl ether triacrylate; the low-melting-point copolyester prepared by the invention is low in melting point, good in flame retardance and excellent in mechanical property.

The invention provides a composite antibiotic-replacing microcapsule preparation as well as a preparation method and application thereof. The composite antibiotic-replacing microcapsule preparation comprises a core material as well as an inner-layer wall material and an outer-layer wall material which are sequentially coated outside the core material, wherein the core material comprises a Chinese herbal medicine extract, plant essential oil and probiotics, the Chinese herbal medicine extract comprises forsythin, astragalus polysaccharide and atractylenolide III, the plant essential oil comprises origanum oil and cinnamyl aldehyde, and the probiotics comprise bacillus subtilis; the inner-layer wall material is prepared by crosslinking sodium alginate and calcium chloride, and the outer-layer wall material comprises chitosan. The traditional Chinese medicine composition has the characteristics of synergistic interaction, high stability and good intestinal tract targeting property, and can improve the resistance replacement effect.

The invention relates to the technical field of fabric weaving, and discloses a functional spandex fabric which is formed by weaving spandex fibers on a machine after twisting, twist setting, warping and drafting. Wherein the spandex fiber is prepared by fully mixing a high-barrier polyvinyl alcohol modified polyurethane emulsion and a functional compound to form a spinning solution and then carrying out wet spinning; the high-barrier polyurethane emulsion is a polyurethane emulsion with organic fluorine in the structure; the functional compound is a compound with hindered amine groups and cinnamyl Schiff base in the structure. The high-barrier polyvinyl alcohol is prepared to enhance the hydrophobic antifouling performance of the spandex fabric, so that the fabric is not prone to being contaminated by oil stains, the purpose of easy cleaning is achieved, the light fastness and antibacterial performance of the fabric are improved by preparing the functional compound, the fabric is prevented from yellowing due to long-time illumination and physiological activities of bacteria, and the fabric has a good anti-fouling effect. The service life of the fabric is greatly prolonged.

The invention relates to a preparation method of an animal anti-diarrhea feed additive containing delinted moxa powder and essential oil. The preparation method of the animal anti-diarrhea feed additive containing the delinted moxa powder and the essential oil comprises the following steps: mixing essential oil components thymol and cinnamyl aldehyde, and stirring at 35-65 DEG C until the essential oil components are dissolved to obtain an essential oil solution; the preparation method comprises the following steps: mixing antioxidants BHA and PG, citric acid and ethanol, and stirring until dissolving to obtain an ethanol solution; mixing the ethanol solution with stone powder, and drying to remove ethanol to obtain a solid mixture; mixing the solid mixture with the essential oil solution, adding delinted moxa powder, and stirring uniformly; according to the preparation method of the animal anti-diarrhea feed additive containing the delinted moxa powder and the essential oil, stable combination of the essential oil and the delinted moxa powder is achieved, the diarrhea morbidity and mortality are remarkably reduced in animal experiments, and the effect is better than that of independent use of the essential oil.

The present application belongs to the technical field of livestock feed additives, and discloses a compound plant extract additive for resisting and promoting growth of feed and a preparation method thereof. The additive is composed of not less than 40% of the compound plant extract and not less than 5% of the compound essential oil. The plant extract is selected from the group consisting of Rhizoma Coptidis, Radix Aucklandiae, Radix Scrophulariae, roasted foxtail millet, leaves of Alchornea trewioides, moxa licorice and Amomum kravanh as raw materials; the essential oil part includes cinnamaldehyde, cassia oil, cinnamon oil, thymol and oregano oil to form a synergistic antibacterial aromatic system. The starch-arabic gum protein composite wall material is used for microencapsulation to realize slow release and adapt to the feed granulation condition. The bitterness and irritating odor are covered by the flavoring technology to improve the animal feed intake and palatability. The additive has multiple functions of resisting and preventing diarrhea, enhancing immunity, promoting growth and improving meat quality, is natural in origin, free of antibiotics, and has no residue and no drug resistance, and is suitable for long-term feeding.

This invention relates to the field of feed additive technology, specifically to a Bacillus subtilis composition for improving animal intestinal health and its preparation method. It comprises the following raw materials: Bacillus subtilis engineered bacterial powder, cinnamaldehyde microcapsules, proanthocyanidins B2, selenium-enriched yeast culture, glycoterpenes, trehalose, and a carrier. The core of this invention lies in using Bacillus subtilis EhrBS-9 (CGMCC No. 24947) as the strain, constructing a dual-function engineered bacterium with tolerance and transformation through gradient cinnamaldehyde domestication and cad gene integration. This, combined with the intestinal-targeted delivery of cinnamaldehyde microcapsules, barrier strengthening of proanthocyanidins B2, and the construction of a multidimensional anti-stress network of selenium-enriched yeast, glycoterpenes, and trehalose, forms a synergistic mechanism of gut microbiota regulation, immune enhancement, and stress buffering. This addresses the industry pain point of insufficient synergistic effects of existing feed additives in terms of high-efficiency antibacterial activity, safe immune regulation, root-cause anti-stress, and ecological safety.

The invention discloses a multi-core green active microcapsule oil-displacing agent and a preparation method and application thereof, the preparation method comprises the following steps: adding myristic acid and cinnamyl aldehyde into absolute ethyl alcohol, stirring at room temperature until the myristic acid and the cinnamyl aldehyde are dissolved to obtain a composite core material solution, and standing for later use; adding sodium alginate into deionized water, stirring at 30-60 DEG C until no floccules exist to obtain a wall material solution, and standing for later use; mixing the composite core material solution with the wall material solution, adding lauryl sodium sulfate, stirring at 75-85 DEG C for 1-3 hours to form a composite electrostatic spraying solution, and standing for later use; performing electrostatic spraying on the composite electrostatic spraying solution to prepare primary microcapsules, curing with a calcium chloride solution, washing with water, and freeze-drying to obtain the microcapsule oil-displacing agent. The microcapsule has a multi-core structure, is high in load rate, is matched with a targeted release characteristic, can enhance the residual oil stripping efficiency and the crude oil recovery efficiency when being used in the field of oil displacement, and can also be used in the field of agriculture.

The application discloses a preparation method of electrochemically modified sweet potato residue pectin, and products and applications of the electrochemically modified sweet potato residue pectin. The sweet potato residue pectin is modified by using an electrochemical method, and the process is simple, green and efficient, and an anode modified pectin with high antibacterial activity and a cathode modified pectin with excellent wide-pH gel performance can be simultaneously prepared. Application researches show that the cathode modified pectin is combined with cinnamaldehyde to form stable milk gels, and the evaporation of water and the volatility of cinnamaldehyde can effectively delay strawberry spoilage; the anode modified pectin coating can significantly prolong the shelf life of refrigerated beef by 2 days, inhibit the growth of microorganisms and maintain the meat color and quality. The application provides a new idea for green modification of the sweet potato residue pectin and expands the application potential of the sweet potato residue pectin in food preservation and functional materials.

The invention discloses a preparation method and application of cinnamyl aldehyde nanoparticles, and the preparation method is characterized in that cinnamyl aldehyde is used as a functional component, zein is used as a carrier, sodium caseinate is used as a stabilizer, and pectin is used as a stabilizer and an adhesive to prepare the cinnamyl aldehyde nanoparticles. Experiments prove that the cinnamyl aldehyde nano-particles prepared by the invention can significantly improve the stability of cinnamyl aldehyde, enhance the antibacterial activity of cinnamyl aldehyde to staphylococcus aureus, and provide more choices for development and utilization of cinnamyl aldehyde.

This invention relates to the field of grain storage technology, and in particular to a natural plant essential oil insecticide composition, its preparation method, and its application. The natural plant essential oil insecticide composition comprises a main active ingredient and co-active ingredients. The main active ingredient includes cinnamaldehyde, allyl isothiocyanate, and cuminaldehyde. The co-active ingredients include 1,8-cineole, β-phellandrene, γ-terpinene, p-cymene, eugenol, α-pinene, linalool, and limonene. By volume percentage, the insecticide composition contains: cinnamaldehyde 15-40%, allyl isothiocyanate 20-40%, and cuminaldehyde 0.5-16.5%. The insecticide composition provided by this invention is made from natural plant essential oils, is stable, safe, environmentally friendly, does not pollute grains, and has an aromatic odor. It has a strong insecticidal effect on pests such as rice weevils in grains and has good application prospects in the field of grain storage.

The invention discloses a cinnamyl aldehyde modified montmorillonite nanosheet capable of inhibiting bacterial quorum sensing as well as a preparation method and application of the cinnamyl aldehyde modified montmorillonite nanosheet. According to the modified nanosheet, a two-dimensional montmorillonite nanosheet is taken as a carrier, and cinnamyl aldehyde is intercalated into an interlayer region of the two-dimensional montmorillonite nanosheet. The modified montmorillonite nanosheet can achieve the effect of inhibiting inflammation by inhibiting bacterial quorum sensing and adjusting the abundance of intestinal microorganisms, effectively relieves symptoms induced by IBD, has good stability, biocompatibility and biodegradability, and can be used for treating inflammatory bowel diseases.

The invention relates to the field of catalysts, and discloses a cinnamyl aldehyde selective hydrogenation catalyst and a preparation method and application thereof. The catalyst comprises a carrier and an active component loaded on the carrier, the carrier is macroporous alumina, the specific surface area of the carrier is 95-195 cm < 2 > / g, the average mesopore diameter of the carrier is 20-90 nm, the water absorption rate of the carrier is 205-300%, and the active component is selected from at least one of Ru, Rh, Pt and Pd. The catalyst provided by the invention has good catalytic activity and cinnamyl aldehyde selective hydrogenation performance, by adopting the preparation method of the catalyst provided by the invention, the catalyst with good active component dispersity can be obtained, and the use cost of the catalyst can be reduced while the service life of the noble metal catalyst can be greatly prolonged. In addition, the preparation method of the catalyst is simple and controllable.

The application discloses a battery pack fireproof and heat-insulating coating and a preparation method thereof, and relates to the technical field of fireproof coatings. The battery pack fireproof and heat-insulating coating prepared by the application comprises a composite flame-retardant charring agent, modified phenolic resin, fillers, a silane coupling agent and a defoaming agent. The modified phenolic resin is prepared by the reaction of double-end hydroxyl polyphenyl ether, amino-phenolic resin and polythioacetal. The double-end hydroxyl polyphenyl ether is prepared by the reaction of 2,6-dimethylphenol and tetramethyl bisphenol A. The polythioacetal is prepared by the polymerization of 1,3-dimercapto-2-propanol and cinnamaldehyde. The thermal stability is improved, and the coating has the ability of self-repairing. The composite flame-retardant charring agent is prepared by the reaction of a sulfonamide piperazine compound, 4,4'-dimercaptodiphenyl sulfide and diamino diphenyl methane modified ammonium polyphosphate. The sulfonamide piperazine compound is prepared by the reaction of chlorosulfonyl isocyanate and piperazine, and then the reaction with chloroacetyl chloride. The carbonization property and thermal stability of the coating are improved.

This invention discloses a method for preparing high-purity benzoic acid from cinnamon oil, belonging to the field of organic synthesis and natural product transformation technology. The steps are as follows: Cinnamon oil purification: Cinnamon oil is separated and purified using molecular distillation to obtain cinnamaldehyde with a purity ≥88.5%; The cinnamaldehyde obtained in step S1 is dissolved in an alkaline solution, a catalyst is added, and the mixture is heated under reflux. After the reaction is complete, a reaction solution containing benzoic acid is obtained; Product separation and purification: An organic solvent is added to the reaction solution for extraction, and the organic phase is distilled under reduced pressure to recover the solvent, yielding the final product benzoic acid. The organic reagents used in this method are all non-toxic and harmless or do not pollute the environment after decomposition. The reaction conditions are simple, the reaction is complete, and there are few or no byproducts, resulting in a high-purity final product.

The application relates to the technical field of new biological medical materials, in particular to a cinnamaldehyde modified high-molecular nucleic acid carrier and a preparation method and application thereof, wherein the cinnamaldehyde modified high-molecular nucleic acid carrier is a cinnamaldehyde modified polyethylene imine polymer. The high-molecular nucleic acid carrier provided by the application can significantly improve the DNA and RNA transfection efficiency in different cells, and can effectively improve the biocompatibility of the high-molecular carrier. The preparation steps of the high-molecular nucleic acid carrier are simple, the biocompatibility is good, the repeatability of batches is strong, and the high-molecular nucleic acid carrier has a wide application prospect in the development of nucleic acid carriers, gene transfection and nucleic acid treatment and the like.

The application belongs to the technical field of molecular biology, and particularly relates to a SNP molecular marker for identifying cinnamyl aldehyde type cortex cinnamomi, a primer thereof and application. The SNP molecular marker is located at 9 sites between the 6th and 7th exons of a gene Cbur03G002680, including the 11th site, the 146th site, the 157th site, the 176th site, the 197th site, the 206th site, the 236th site, the 238th site and the 242nd site; the nucleic acid sequence of the gene between the 6th and 7th exons is shown as SEQ ID NO. 4, the accuracy of the SNP molecular marker for identifying cinnamyl aldehyde type cortex cinnamomi is more than 98.5%, the accurate prediction rate is 84.5%, the detection level accuracy is high, and the SNP molecular marker is easy to repeat.

The invention provides a thermal expansion material, a resin liquid bridge plug and a deep shale gas shaft pressure-bearing plugging method. The thermal expansion material comprises a combination of any two or three of oxidative polymerization grafted 3-alkylthiophene modified thermal expansion microspheres, glycidyl methacrylate grafted modified thermal expansion microspheres and cinnamyl nitrile and diethyl fumarate cross-linked thermal expansion core-shell microspheres; by taking the total weight of the thermal expansion material as 100%, when the thermal expansion material comprises an oxidative polymerization grafted 3-alkylthiophene modified thermal expansion microsphere, a glycidyl methacrylate grafted modified thermal expansion microsphere and a cinnamyl nitrile and diethyl fumarate cross-linked thermal expansion core-shell microsphere, the contents of the three are respectively 15-55%, 25-75% and 30-65%. The thermal expansion material has good compatibility with resin liquid bridge plugs, can be uniformly dispersed in resin, does not agglomerate or settle, and can effectively inhibit the shrinkage of the resin through heat release expansion after solidification.

According to the preparation method of the benvimod, the trans-cinnamyl aldehyde is used as a raw material, reaction conditions are mild, used reagents are low in toxicity and high in safety, the production process is easy and convenient to operate, the product yield is high, and the preparation method is suitable for large-scale industrial production.