312 results about "Cinnamaldehyde" patented technology

The invention provides a gamma-cyclodextrin-based metal organic framework composite material as well as preparation and application thereof. The metal organic framework composite material based on gamma-cyclodextrin comprises chitosan, gamma-CD-MOFs (Metal Organic Frameworks) and an active substance. The preparation method comprises the following steps: by taking chitosan as a film material base material, synthesizing gamma-CD-MOFs by utilizing a hydrothermal method, and then loading cinnamyl aldehyde with antibacterial property, 2-methoxycinnamyl aldehyde with ultraviolet light resistance and curcumin with an antioxidant effect into the gamma-CD-MOFs. And finally, mixing with chitosan with better film-forming property, and spraying on glass or the surfaces of fresh fruits. The gamma-CD-MOFs has the characteristic of slowly releasing bioactive substances, is non-toxic and is a material capable of being applied to food packaging.

The invention discloses a Pickering emulsion with cinnamyl aldehyde as an oil phase and a preparation method of the Pickering emulsion. The Pickering emulsion is prepared by the following steps: carrying out a cross-linking reaction on anions released by sodium tripolyphosphate and protonated cations of chitosan to prepare chitosan nanoparticles as a water phase, and then taking cinnamyl aldehyde as an oil phase. The Pickering emulsion delivery system disclosed by the invention can effectively release cinnamyl aldehyde, shows the remarkable antibacterial property of cinnamyl aldehyde on a wound surface, promotes wound surface healing, and shows good treatment potential.

The invention relates to the field of film materials, and discloses a degradable antibacterial film material and a preparation method thereof.The film material comprises degradable matrix resin, a modified additive, a plasticizer and a lubricant; the modified additive is prepared by loading a natural antibacterial agent on a modified flame-retardant composite filler; the modified flame-retardant composite filler is prepared by reacting cinnamyl aldehyde with a flame-retardant composite filler and forming a complex with zinc acetate dihydrate; the flame-retardant composite filler is prepared by reacting epoxidized composite filler with 1, 5-naphthalene diamine and then further reacting with phytic acid; according to the invention, the natural antibacterial agent is loaded in the modified flame-retardant composite filler through a vacuum impregnation method, and the mechanical property, antibacterial property and flame-retardant property of the material are enhanced by adding the modifying additive, so that the flame-retardant and antibacterial composite material has the advantages that the flame-retardant and antibacterial properties of the material are improved, and the service life of the material is prolonged. Meanwhile, diffusion / permeation of gas and water molecules in the film is adjusted.

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 relates to an o / w type high-content composite essential oil nanoemulsion and a preparation method and application thereof.The median particle size of the composite essential oil nanoemulsion is not larger than 45 nm, and the composite essential oil nanoemulsion comprises plant essential oil, polyethylene glycol glycerol ricinoleate with the HLB value being 10-14, a cosolvent, water, vitamin E acetate and ethylene diamine tetraacetic acid disodium salt. The plant essential oil is selected from two or more of carvacrol, cinnamyl aldehyde, capsicum oleoresin and thymol. The compound essential oil nanoemulsion solves the key technical problem of high-content load compound nanoemulsion of various plant essential oils, is beneficial to exerting the synergistic effect of different essential oils, and reduces the addition amount of the essential oils while achieving the same physiological function. Besides, the particle size of the composite essential oil nanoemulsion reaches the nanoscale, the composite essential oil nanoemulsion can form homogeneous-phase clear liquid, can be quickly diffused in a waterline or a water environment, is more beneficial to absorption, has the advantages of good stability and long storage life, and is more competitive in practical application.

The invention discloses cinnamyl aldehyde at nano calcium carbonate / chitosan hydrogel. The hydrogel comprises a hydrogel matrix formed by cross-linking nano calcium carbonate and chitosan, and cinnamyl aldehyde loaded on the hydrogel matrix. The hydrogel system which is loaded with traditional Chinese medicine components and intelligently controls effective release of the traditional Chinese medicine components is prepared by utilizing the mutual adsorption effect of cinnamyl aldehyde and nano calcium carbonate. The hydrogel has excellent antibacterial activity and a function of accelerating wound healing, and the effect of the hydrogel is obviously superior to that of common calcium carbonate / chitosan hydrogel. A new direction is provided for application of the cinnamyl aldehyde and nano calcium carbonate / chitosan nano system, and a new strategy is provided for designing advanced functional materials modified by traditional Chinese medicine ingredients.

The invention belongs to the technical field of cinnamyl aldehyde nanoemulsion detection, and particularly relates to a cinnamyl aldehyde nanoemulsion stability detection method and system. According to the method, the stability of the cinnamyl aldehyde nanoemulsion sample can be effectively evaluated by accurately controlling and monitoring the particle size and Zeta potential value change of the cinnamyl aldehyde nanoemulsion sample in the aging treatment process, and the aging abnormity of the sample can be found in time by setting a reasonable fluctuation threshold value and a reasonable fluctuation node, so that corresponding treatment measures are taken, and the quality of the cinnamyl aldehyde nanoemulsion sample is improved. In addition, the detection system can automatically adjust the monitoring frequency according to the detection result, samples under disordered distribution characteristics are monitored more frequently so as to ensure that potential stability problems can be found in time, and the detection accuracy of the cinnamyl aldehyde nanoemulsion sample is improved. And the loss risk caused by instability of the sample is reduced.

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.

To provide an alcoholic beverage featuring an enhanced alcohol sensation, along with added or improved freshness and aftertaste richness.SOLUTION: An alcoholic beverage contains eugenol in an amount of 0.1 mg / L or more and 7.0 mg / L or less and cinnamaldehyde in an amount of 0.01 mg / L or more and 1.0 mg / L or less.SELECTED DRAWING: None

The present application relates to the technical field of bacteriostatic impregnated paper preparation, and discloses a bacteriostatic impregnated paper and a preparation method thereof, wherein a melamine impregnated paper substrate is impregnated with an impregnating solution; a rate regulating coating is coated on the surface of the substrate, so that the release rate of the bacteriostatic component is regulated according to the change of environmental pH value; wherein the surface of the rate regulating coating is further coated with a nano-silver particle layer, and the components of the impregnating solution include the following raw materials in percentage by weight: tea tree oil 0.5-2%, cinnamaldehyde 1-3%, lemon essential oil 0.5-1%, ethanol 70-80% and water; the present application provides a multi-layer protection mechanism, which can not only effectively kill various bacteria and fungi, but also prolong the duration of the bacteriostatic effect; the presence of the nano-silver particle layer enhances the long-term bacteriostatic effect, and even after long-term use, the high-efficiency antibacterial performance can be maintained; the introduction of the pH-sensitive polymer coating enables the release rate of the bacteriostatic component to be automatically regulated according to the change of environmental pH value.

The invention belongs to the technical field of food fresh-keeping packaging materials, and discloses a green chitosan-based antibacterial film as well as a preparation method and application thereof. The green chitosan-based antibacterial film comprises a film with chitosan as a matrix and shellac nanoparticles loaded in the matrix, and the shellac nanoparticles encapsulate cinnamyl aldehyde and citral. The green chitosan-based antibacterial film disclosed by the invention has good mechanical property, barrier property, antibacterial property and biodegradability, the preparation process is simple, the raw materials are green and safe, and the environment-friendly effect is realized. And the shelf life of the bread can be obviously prolonged to the eighth day when the bread is stored at 25 DEG C in the preservation process of the bread.

The invention relates to the field of insoles, and particularly discloses a macromolecular mildew-proof antibacterial micro-foaming breathable shoe material and a preparation method thereof.The shoe material comprises a foaming macromolecular matrix, and the foaming macromolecular matrix is mixed with an antibacterial plant extract, a mildew inhibitor, a functional additive and a volatile aromatic component; the antibacterial plant extract comprises at least one of mugwort plant extract and wula sedge extract, the mildew preventive is cinnamyl aldehyde, the functional additive comprises at least one of nano TiO2, chitosan, tea polyphenol, zinc oxide or graphene oxide, and the volatile aromatic component is volatile natural essential oil or perfume component. And the foaming polymer matrix is a bio-based polymer material. According to the invention, sustainable bio-based manufacturing and multifunctional integration can be taken into consideration, and efficient, simple, convenient and high-quality micro-foaming breathable shoe material preparation is realized.

The invention discloses a preparation method of a high-toughness transparent plastic cup, and belongs to the technical field of plastic preparation, and the preparation method comprises the following steps: 1, preparing a modified elastomer toughening agent from 16.4-21.9% of an isosorbide-based plasticizer, 2.2-2.6% of polydimethylsiloxane, 1.5-2.2% of citric acid and the balance of polycaprolactone; 2, preparing a cinnamyl aldehyde bamboo pulp antibacterial reinforcing agent from 4.8 to 8.2 percent of cinnamyl aldehyde, 22 to 36 percent of bamboo pulp, 7.5 to 10.6 percent of bio-based 1, 3-propylene glycol (PO3G) and the balance of water; 3, weighing the cinnamyl aldehyde bamboo pulp antibacterial reinforcing agent, the modified elastomer toughening agent and polylactic acid to prepare high-toughness polylactic acid; and 4, preparing the high-toughness transparent plastic cup from the high-toughness polylactic acid. The high-toughness transparent plastic cup is prepared by compounding the modified elastomer flexibilizer, the cinnamyl aldehyde bamboo pulp antibacterial enhancer and the polylactic acid, and has the advantages of high strength, excellent toughness, good staphylococcus aureus inhibition effect, biodegradability and the like.

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 invention relates to a preservative film loaded with antibacterial nanoparticles and a preparation method and application thereof, the preservative film comprises a film substrate and a load loaded on the film substrate, the load is perfume nanoparticles coated with alizarin-copper metal polyquinone, and the film substrate is a carboxymethyl cellulose-gelatin mixed film. The preparation method of the preservative film comprises the following steps: adding a cinnamyl aldehyde ethanol solution and a copper chloride aqueous solution into an alizarin-F127 mixed solution to prepare the alizarin-copper metal polyquinone coated perfume nanoparticles, mixing the perfume nanoparticles into a carboxymethyl cellulose-gelatin mixed film solution, pouring the mixture into a mold, drying, and demolding to obtain the preservative film. Compared with the prior art, the spice nano-particles prepared by the method disclosed by the invention can release the antibacterial spices under the acidic condition and change the color at the same time, so that the purposes of prolonging the shelf life of food and monitoring the environmental change in a package are achieved. The invention opens up a new path for the application of the multifunctional intelligent preservative film.

The invention discloses a quenching type fluorescent probe for detecting gold ions as well as a preparation method and application of the quenching type fluorescent probe. The fluorescent probe is 2-(3-(4-(dimethylamino) phenyl) alkenyl)-6-hydroxybenzofuran-3 (2H)-ketone. The structural formula of the fluorescent probe is shown in the description. 4-(dimethylamino) cinnamyl aldehyde is used as a raw material and is subjected to aldol condensation reaction with 6-hydroxy-2H-benzofuran-3-ketone to obtain a compound 2-(3-(4-(dimethylamino) phenyl) alkenyl)-6-hydroxybenzofuran-3 (2H)-ketone, and a compound solution can emit strong near-infrared fluorescence under excitation of laser with the wavelength of 365 nm, so that the near-infrared fluorescence can be used for detecting the near-infrared fluorescence. Near-infrared fluorescence of the solution can be rapidly quenched after gold ions are added into the solution, and the near-infrared fluorescence of the solution cannot be obviously changed after other metal ions are added into the solution. Therefore, the compound can be used as a near-infrared quenching type fluorescent probe for specifically detecting gold ions, has the advantages of low detection limit (8.47 * 10 <-8 > mol / L), short response time (less than 6s) and the like, and has a very good application prospect.

The invention relates to the technical field of polymer gel materials, in particular to silk fibroin hyaluronic acid double-network gel for filling nasolabial grooves and a preparation process of the silk fibroin hyaluronic acid double-network gel. According to the invention, the tannic acid, the cinnamyl aldehyde, the lidocaine and the mesoporous polydopamine nanoparticles are added, so that the composite antibacterial material is prepared. The preparation method comprises the following steps: adding hyaluronic acid, sodium periodate, propylated chitosan and a photoinitiator 2959 to obtain a solution A; adding silk and sodium alginate to obtain a solution B; mixing the solution A and the solution B, fully stirring, adding a composite antibacterial material, and continuously stirring to obtain a mixed cross-linking solution; sequentially carrying out ultrasonic defoaming, freezing overnight and freeze drying on the mixed cross-linking solution to obtain aerogel; and dipping the aerogel in a calcium chloride solution, and carrying out ultraviolet crosslinking, water washing and freeze drying to obtain a finished product. The finished product prepared by the invention has excellent antibacterial property and high crosslinking degree, so that the finished product has wide application prospects in the technical field of polymer gel materials.

The invention relates to the technical field of traditional Chinese medicine detection, in particular to a characteristic spectrum construction method, a characteristic spectrum and a detection method of traditional Chinese medicine granules. The traditional Chinese medicine granules comprise protocatechuic aldehyde, hydroxysafflor yellow A, salvianolic acid B, cinnamic acid and cinnamaldehyde; the construction method comprises the following steps: taking protocatechuic aldehyde, hydroxysafflor yellow A, salvianolic acid B, cinnamic acid and cinnamaldehyde reference substances, and preparing a mixed reference substance solution; preparing a test solution from the traditional Chinese medicine granules; and respectively carrying out liquid chromatographic analysis on the mixed reference substance solution and the test solution to obtain the characteristic chromatogram of the traditional Chinese medicine granules. Wherein the liquid chromatographic analysis conditions comprise that a phosphoric acid solution is used as a mobile phase A, acetonitrile is used as a mobile phase B, and gradient elution is carried out. The problem that the quality of traditional Chinese medicine particles is difficult to control is solved.

The invention discloses a mildewproof and flame-retardant soybean protein adhesive and a preparation method thereof. The preparation method comprises the following steps: firstly, grafting phytic acid and cinnamyl aldehyde through catalytic esterification reaction, mixing soybean protein isolate and distilled water according to a ratio of 1: 9, mechanically stirring at room temperature for 30 minutes, regulating the pH value to 9-10 by adopting a sodium hydroxide solution in the stirring process, and then adding phytic acid cinnamyl aldehyde with different addition amounts to prepare the modified soybean protein adhesive. According to the invention, cinnamyl aldehyde derived from natural plant cinnamon is used as a modifier, so that the modifier is green, environment-friendly and renewable. The adhesive is high in wet shear strength, good in mildew resistance and flame retardance and simple in production process, and can be used in the field of artificial board manufacturing.

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.

The invention relates to cinnamyl aldehyde oleogel and a preparation method thereof. The preparation method comprises the following steps: weighing a certain amount of linseed oil, putting the linseed oil into a beaker, and carrying out magnetic heating and stirring; adding the 12-hydroxystearic acid into the linseed oil, and stirring until the 12-hydroxystearic acid is completely dissolved; after the temperature is reduced, adding cinnamyl aldehyde, and stirring to obtain a clear and transparent solution; and after uniformly stirring, stopping heating and stirring, and naturally cooling to room temperature to obtain the cinnamyl aldehyde oleogel. According to the invention, 12-hydroxystearic acid is adopted as a gel agent, and cinnamyl aldehyde is encapsulated by an oleogel system, so that cinnamyl aldehyde is slowly released, and the antibacterial activity of cinnamyl aldehyde is prolonged. The invention further relates to cinnamyl aldehyde oil gel particles and application thereof. The cinnamyl aldehyde oil gel particles are used for preventing fruits from mildewing and rotting in the long-term storage or long-distance transportation process.

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 invention relates to an application of cinnamyl aldehyde oxime ester in prevention and treatment of bacterial wilt, the structure of the cinnamyl aldehyde oxime ester is shown as a formula I, and the cinnamyl aldehyde oxime ester comprises cinnamyl aldehyde phenylpropyl oxime ester, cinnamyl aldehyde pepper oxime ester and cinnamyl aldehyde p-chloro cinnamyl aldehyde oxime ester. The invention provides application of the three compounds in prevention and treatment of mulberry bacterial wilt, the semi-inhibitory concentrations of the three compounds are 0.05 g / L, 0.14 g / L and 0.03 g / L respectively, and the three compounds have a remarkable bacteriostatic effect on ralstonia solanacearum at low concentration and are suitable for being used as a ralstonia solanacearum bacteriostatic agent. # imgabs0 #

The invention discloses resorcinol-cinnamyl aldehyde resin, a preparation method of the resorcinol-cinnamyl aldehyde resin, a modified vulcanized rubber composition and application of the modified vulcanized rubber composition, and relates to novel phenolic resin, in particular to environment-friendly phenolic resin with alkyl resorcinol and hydroxyl cinnamyl aldehyde as raw materials. The preparation method disclosed by the invention is simple in process, cinnamyl aldehyde extracted from bio-based is used in the process, the sustainable development concept is met, the environment-friendly characteristic of cinnamyl aldehyde is utilized, and the influence of formaldehyde on human bodies in the traditional resin production process is avoided. The invention also relates to application of the rubber composition in the rubber industry, and the prepared rubber product has excellent mechanical properties.

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 discloses a cinnamyl aldehyde derivative-based 1-hydroxy-1-sodium sulfonate structural compound as well as a preparation method and application thereof, and belongs to the technical field of preparation of agricultural chemicals. The structural general formula of the compound is shown as a formula (I). The preparation method of the compound comprises the following steps: dropwise adding a homogeneous phase B system consisting of sodium hydrogen sulfite, a quaternary phosphonium salt phase transfer catalyst and water into a homogeneous phase A system consisting of a compound shown in a formula (II) and an organic solvent, and carrying out nucleophilic addition reaction to obtain the compound shown in the formula (I). The preparation method is simple, reaction conditions are mild, and the obtained compound is good in environmental compatibility, has high biological activity on soil pathogens (bacteria, fungi, root-knot nematode and the like), can be widely applied to prevention and treatment of soil-borne diseases, and provides material guarantee for safe production of crops.

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 present invention provides a biodegradable chitosan-polylipoic acid composite film, a preparation method, and applications, belonging to the technical field of food preservation materials. The chitosan-polylipoic acid composite film is obtained by electrospinning an emulsion containing a chitosan-polylipoic acid complex, a plasticizer, a spinning aid, and cinnamaldehyde. The chitosan-polylipoic acid composite film is biodegradable, has a uniform and controllable structure, and is multifunctional. It has a high encapsulation efficiency, a tight coordination, good antibacterial and antioxidant activity, excellent mechanical properties and gas barrier properties, and can control the release of cinnamaldehyde by responding to changes in pH and humidity in the environment. It has good application prospects in the field of fruit and vegetable preservation.