129 results about "Cinnamic aldehyde" patented technology

The invention relates to the field of textile materials, and provides an antibacterial breathable yarn obtained by blended spinning of polyester fibers, polyamide fibers, cotton fibers and elastic fibers. The polyester fiber is prepared through melt blending and spinning processes and comprises polyethylene glycol terephthalate slices, modified chitosan zinc oxide, an antioxidant 1010, a POE elastomer, polyether modified silicone oil and polyethylene glycol 200, and the modified chitosan zinc oxide is prepared by compounding chitosan cinnamyl aldehyde Schiff base and silane modified zinc oxide. The chitosan cinnamyl aldehyde Schiff base is prepared through a Schiff base condensation reaction of chitosan and cinnamyl aldehyde, and the silane modified zinc oxide is prepared from nano rod-shaped zinc oxide particles modified by isocyanate propyl triethoxy silane. The yarn has excellent antibacterial property, air permeability and flexibility and is further used for knitting antibacterial breathable socks, the knitting density of the sock bottom part is reduced to enhance the air permeability, the knitting density of the sock opening part is improved to improve the elasticity and the fitting degree, and the yarn has wide application value.

The invention provides a cinnamyl aldehyde drug-loaded self-microemulsion as well as a preparation method and application thereof, and belongs to the technical field of biological pharmacy. The cinnamyl aldehyde drug-loaded self-microemulsion disclosed by the invention is prepared from the following raw materials in parts by weight: 0.5 to 5.5 parts of cinnamyl aldehyde, 0 to 5.5 parts of oil phase, 0.5 to 5.5 parts of emulsifier and 0.01 to 0.045 part of insoluble drug. By adopting the self-microemulsion drug delivery system, the drug effect of the cinnamyl aldehyde and the combination of the cinnamyl aldehyde and other traditional Chinese medicine components is improved, the drug loading capacity is high, dispersion is easy, the stability is high, the drug effect is remarkable after the cinnamyl aldehyde and other traditional Chinese medicine components are combined, and the curative effect is good. The traditional Chinese medicine composition has an improvement effect on hepatic fibrosis, has a remarkable treatment effect on non-alcoholic steatohepatitis, and has certain application and development values.

The invention discloses a bletilla striata polysaccharide hydrogel dressing and a preparation method and application thereof.The preparation method of the bletilla striata polysaccharide hydrogel dressing comprises the following steps that a carboxymethyl chitosan solution, a bletilla striata polysaccharide solution and cinnamyl aldehyde are mixed and stirred to be uniform at the temperature of 20-30 DEG C, a mixed solution system is prepared, and then standing is conducted to form gel; wherein the volume ratio of the carboxymethyl chitosan solution to the bletilla striata polysaccharide solution is (1-5): 1, and the concentration of the cinnamyl aldehyde in the mixed solution system is 0.05-5 wt%. The preparation process is simple, the raw materials are all green and natural sources, and the prepared hydrogel is good in biocompatibility, has good antibacterial, anti-inflammatory and angiogenesis promoting effects and can accelerate diabetic wound repair.

The invention relates to a preparation method of oxygen vacancy-containing bismuth vanadate BiVO4-OVs or metal bismuth-loaded bismuth vanadate xBi0 / BiVO4. The preparation method comprises the following steps: weighing bismuth nitrate pentahydrate and ammonium metavanadate according to a molar ratio of bismuth nitrate pentahydrate to ammonium metavanadate of 1: 1 + x; the preparation method comprises the following steps: respectively dissolving bismuth nitrate pentahydrate and ammonium metavanadate in a solvent, fully mixing the bismuth nitrate pentahydrate and the ammonium metavanadate, adjusting the pH value of the solution, placing a reaction system in an environment of 140-180 DEG C for reaction, washing and drying a product, and roasting under the protection of argon to obtain the product. In addition, the invention also discloses an application of the bismuth vanadate BiVO4-OVs containing oxygen vacancies or the bismuth vanadate xBi0 / BiVO4 loaded with metal bismuth as a catalyst in preparation of benzaldehyde by photocatalytic oxygen oxidation of cinnamyl aldehyde. According to the method, the utilization rate of cinnamyl aldehyde can be increased, efficient oxidation can be achieved in the initial stage of reaction, good benzaldehyde selectivity can be achieved, and the adopted catalyst is efficient and non-toxic and has no influence on the naturalness of benzaldehyde.

The invention discloses a mildew-proof green-keeping agent for bamboo wood, a preparation method and application. The preparation method of the bamboo wood mildew-proof green-keeping agent comprises the following steps: S1, adding chitosan into an acetic acid aqueous solution, and stirring until the chitosan is dissolved to obtain a mixed solution A; s2, adding copper salt into deionized water, and stirring until the copper salt is dissolved to obtain a mixed solution B; s3, adding cinnamyl aldehyde into an ethanol water solution, and stirring until cinnamyl aldehyde is dissolved to obtain a mixed solution C; and S4, the mixed solution A, the mixed solution B and the mixed solution C are mixed at the same time, stirring is conducted again under the water bath condition till the cinnamyl aldehyde chitosan copper is obtained through a reaction, and the cinnamyl aldehyde chitosan copper serves as the mildew-proof and green-keeping agent for the bamboo wood. Bamboo obtained through the treatment method is better in green-keeping and mildew-proof effects, bamboo green of the bamboo treated through the mildew-proof green-keeping agent is dark green, the bamboo can be kept green indoors and outdoors for a long time, the efficient mildew-proof performance is achieved, the treatment method is simple, and the mildew-proof green-keeping agent is non-toxic and harmless.

The invention discloses bio-based antibacterial polyester and a preparation method thereof, and belongs to the technical field of preparation of polyester materials, according to the preparation method, furandicarboxylic acid is used as a first monomer, dihydric alcohol is used as a second monomer, antibacterial amino acid Schiff base is used as a third monomer, and the bio-based antibacterial polyester is prepared through a melt polycondensation method; the high-barrier antibacterial material is obtained by introducing cinnamyl aldehyde-amino acid Schiff base with broad-spectrum antibacterial activity into a PEF material with high barrier property, and the problems that an added antibacterial agent has poor compatibility with the material and is easy to migrate into food to influence the taste are solved.

The invention provides an essence with a jasmine tea flavor. Comprising leaf alcohol, linalool, phenethyl alcohol, alpha-amyl cinnamic aldehyde, hexanal, benzyl acetate, jasmine absolute oil, neroli oil, leaf alcohol acetate, indole, geraniol, geranyl acetate, linalyl acetate, methyl dihydrojasmonate, farnerol, alpha terpilenol, damascenone B, ionone B, benzyl acetate, benzyl alcohol, leaf alcohol benzoate and ethyl maltol. The compound is one or more of methyl anthranilate, methyl benzoate and methyl salicylate. The jasmine tea beverage food added with the jasmine tea flavor essence disclosed by the invention can effectively modify and improve the flavor of the jasmine tea beverage, increase the tea fragrance and flower fragrance of the jasmine tea beverage, and enable the fragrance and taste to be richer and fuller.

The invention relates to the technical field of polyester fibers, in particular to a preparation method of antibacterial modified polyester fibers, the prepared antibacterial modified polyester fibers have excellent antibacterial performance, a multi-layer antibacterial system is formed by introducing a nano-zinc oxide and Schiff base compound antibacterial agent into the polyester fibers, and the antibacterial performance of the polyester fibers is improved. Nano zinc oxide and copper / zinc oxide particles have broad-spectrum antibacterial property and can destroy cell walls and cell membranes of bacteria so as to achieve the antibacterial effect, and Schiff base as an organic antibacterial agent can be combined with receptors on the cell membranes of the bacteria to enhance the antibacterial effect; chitosan and cinnamyl aldehyde are adopted as raw materials for preparation of the Schiff base, and the two substances have good biocompatibility and degradability, so that the Schiff base compound antibacterial agent is safer and more environmentally friendly in the fiber; the nano zinc oxide, the copper / zinc oxide particles, the chitosan, the cinnamyl aldehyde and the like in the raw materials are all environment-friendly materials and are good in degradability, and environmental pollution and ecological damage can be reduced.

The present invention relates to the technical field of heated cigarettes, and in particular to a spicy-flavored tobacco flavor for heated cigarettes and heated cigarettes. The tobacco flavor includes, by mass, 0.1-1.5 parts of main aroma components, including Chinese cinnamon bark oil, cinnamic acid, cinnamaldehyde, piperonal, benzyl cinnamate and isoamyl cinnamate; 5.0-14.0 parts of modified components, including plum extract, ethyl acetate, furfural, methylcyclopentenolone, benzaldehyde, phenylacetic acid, vanillin and ethyl vanillin; fixative: 2.0-5.0 parts, the fixative components include Peruvian extract and triacetin; solvent 75.0-93.0 parts. The tobacco flavor can overcome the problems of large taste irritation and obvious spiciness of existing spicy-flavored raw material flavors, and effectively improve and enrich the quality of the suction aroma while giving the heated cigarette a spicy style, and improve the consistency and persistence of aroma release.

The invention discloses a method for detecting homocysteine by a nano-pore sensor based on silver-sulfur polymerization, which comprises the following steps: pretreating a solution containing the homocysteine by 4-dimethylamino cinnamyl aldehyde, and then putting a sensor with a cylindrical nano-pore structure into the solution containing the homocysteine to carry out polymerization reaction; establishing a linear equation of the ratio of the conductivity before and after the polymerization reaction and the concentration of the homocysteine, and calculating the concentration of the homocysteine in the liquid to be detected through the linear equation. The liquid to be detected contains homocysteine and cysteine, and is pretreated by 4-dimethyl amino cinnamyl aldehyde before detection; and an Ag (I) probe is modified in a cylindrical nanopore channel of the sensor. According to the method, a special pretreatment method is utilized to cooperate with a constructed functional probe and a special nanopore structure, and current signal change is amplified based on silver-sulfur polymerization reaction, so that rapid and accurate detection of Hcy is realized.

The application discloses a preparation method of superfine nanofiber antibacterial and mosquito-repellent high-efficiency low-resistance air filtration membrane, which comprises the following steps: dissolving cellulose acetate, cinnamyl aldehyde and polyhexamethylene biguanide hydrochloride in a solvent, fully stirring to form a spinning solution, wherein the solvent is a mixed solution of acetone, N, N-dimethylacetamide and water; and performing electrostatic spinning on the spinning solution to obtain the superfine nanofiber antibacterial and mosquito-repellent high-efficiency low-resistance air filtration membrane. The manufacturing steps of the application are simple and not complicated; cellulose acetate has excellent mechanical properties, hydrophobicity and thermal stability, and is an ideal material for air filtration membrane; the liquid property of cinnamyl aldehyde can effectively dilute cellulose acetate, so that the overall binding energy of the mixed solution system is reduced, the diameter of the prepared fiber is reduced, and meanwhile, the mild binding force of cinnamyl aldehyde minimally affects the interaction between cellulose acetate molecules.

The invention relates to the field of silkworm breeding, in particular to a composite disinfection method suitable for a silkworm house and a silkworm rearing instrument. The composite disinfection method comprises the following steps: S1, carrying out physical and chemical combined preliminary disinfection; S11, cleaning and airing a movable instrument, and cleaning and disinfecting the silkworm house by using ultraviolet rays; s12, disinfecting the movable appliance and the silkworm house by using a chemical agent; s2, deep disinfection is conducted, specifically, a cinnamyl aldehyde and potassium permanganate mixed solution is taken to disinfect a silkworm house, then sulfur powder is used for fumigation disinfection, exhaust is conducted till no pungent smell is left, and the cinnamyl aldehyde and potassium permanganate mixed solution is prepared from cinnamyl aldehyde, water and potassium permanganate according to the volume ratio of 3-4: 5: 1-2; s3, disinfection before the silkworm period. Compared with the prior art, the disinfection method has the advantages that after the silkworm room and the silkworm rearing instrument are disinfected, few sedimentation bacteria are detected on the silkworm room and the silkworm rearing instrument, nuclear polyhedrosis viruses are not detected in silkworm bodies, the silkworm death rate is reduced to 0.3-1.1% and is far lower than that of other disinfection methods when the silkworm room or the silkworm rearing instrument is used for trial breeding of silkworm eggs, and the effect is extremely good.

The invention discloses a recycling process for cinnamaldehyde production wastewater. The process comprises the following steps: filtering the cinnamaldehyde production wastewater after cooling treatment to obtain a first aqueous phase and a first solid phase; performing azeotropic distillation on the first aqueous phase to separate the azeotrope of acetaldehyde, benzaldehyde and water to obtain wastewater containing polyacetaldehyde; adding acid to the wastewater containing polyacetaldehyde to perform acidolysis reaction, then distilling and recovering acetaldehyde, and then filtering the mixture left by distillation to obtain acetaldehyde-free wastewater and scraps; dissolving the first solid phase with a first organic solvent, then adding alkali to perform a first neutralization reaction, separating the liquid after the reaction is completed, and then performing a first acidification on the inorganic layer to obtain benzoic acid, and concentrating the organic layer to obtain scraps. The present invention realizes the comprehensive utilization of useful components in wastewater, reduces emissions and reduces the treatment intensity of the final waste, achieves the transformation of waste into treasure, and comprehensive utilization of resources, significantly improves economic benefits, and greatly enhances the market competitiveness of the cinnamaldehyde project.

The invention discloses aztreonam microspheres as well as a preparation method and application thereof. The microsphere is an inhalation preparation and can be effectively deposited in the lung, so that the slow release of the medicine is realized. According to the aztreonam microspheres, aztreonam and cinnamyl aldehyde are synthesized into a small molecule drug, and the small molecule drug is self-assembled into the microspheres. The preparation method comprises the following steps: (1) placing aztreonam AZT and cinnamyl aldehyde CA in a glass bottle according to a molar ratio of 3: 2, adding dimethyl sulfoxide DMSO, stirring and dissolving, and stirring and reacting at room temperature for 5-7 hours; (2) dialyzing the reacted solution in a dialysis bag, removing DMSO and unreacted small molecules, and obtaining dialysate after 48 hours; (3) performing freeze drying to obtain yellow powder of cinnamyl aldehyde-aztreonam CAT; and (4) weighing the CAT powder, dissolving the CAT powder in deionized water, and shaking to dissolve the CAT powder to obtain the aztreonam microspheres. The microspheres are suitable for treatment of pulmonary infections, in particular for local drug delivery and sustained release control.

The invention provides a preservative as well as a preparation method and application thereof, and belongs to the technical field of blueberry preservation. The preservative disclosed by the invention is prepared from 0.03 to 0.06 part of basil essential oil, 0.01 to 0.03 part of citronella essential oil, 0.05 to 0.09 part of purple perilla essential oil, 0.05 to 0.10 part of thymol, 0.01 to 0.05 part of sweet osmanthus essential oil, 0.01 to 0.05 part of origanum vulgare essential oil, 0.02 to 0.04 part of cinnamyl aldehyde, 0.05 to 0.08 part of cysteine and 0.5 to 2.0 parts of ethanol. The preservative disclosed by the invention is used for carrying out preservative and fresh-keeping on blueberries, and can be used for remarkably reducing the rotting rate of the blueberries, delaying the aging of the blueberries and keeping the color and flavor of the blueberries.

The invention belongs to the technical field of traditional Chinese medicine wine preparation, and particularly relates to traditional Chinese medicine compound wine and a preparation method thereof. The traditional Chinese medicine compound wine is prepared from the following raw materials in specific parts by weight: rhizoma polygonati, Chinese yam, raspberry, fructus lycii, cinnamon, astragalus membranaceus and the like through base wine extraction. The preparation method comprises the following steps: pretreating raw materials, mixing the pretreated raw materials with base liquor, sequentially carrying out ultrasonic treatment, composite enzymatic hydrolysis under a weak acid condition and reflux extraction to promote the nucleophilic addition of cinnamyl aldehyde, citral, polygonatum polysaccharide and Chinese yam saponin to form a hemiacetal structure, and cooperating with organic acid and polysaccharide to construct a hydrogen bond network to form a stable compound system; and filtering the extracting solution, carrying out stepped variable-temperature aging, blending and filling to obtain the traditional Chinese medicine compound wine. The dissolution rate and stability of active ingredients are effectively improved, the problems that traditional medicinal liquor is prone to precipitation, low in bioavailability and poor in taste are solved, and meanwhile the traditional Chinese medicinal liquor has the comprehensive effects of improving the immunity, moistening the lung, nourishing yin and tonifying yang.

The invention belongs to the technical field of postharvest preservation of agricultural products, and discloses a preservative-callus difunctional synergistic regulation particle for broken stems of fresh ginger, the regulation particle is prepared from a regulation particle core capsule and loose porous sand-like particles in a mass ratio of 1: 3, and the regulation particle core capsule comprises the following components in parts by mass: hypochlorous acid; ascorbic acid; cinnamyl aldehyde; the carrier is hydroxypropyl-beta-cyclodextrin; the loose porous sand-like particles comprise modified diatomite; modifying vermiculite; initiator: barium chloride solution and sodium sulfate solution; and the binder is sodium carboxymethyl cellulose. According to the preservative-callus dual-function synergistic blending particle for the broken stems of the fresh gingers, the synergistic effect of ClO2-VC-CA and porous sand-like physical protection are combined, the means of directly soaking and spraying the ginger surface with a traditional preservative is replaced, and the preservative-callus dual-function synergistic blending particle is used for callus of the broken stems of the fresh gingers and preservative and fresh-keeping of the fresh gingers. The rotting rate of the fresh ginger in the storage period can be reduced to 1t; and the shelf life is prolonged to more than 6 months.

The invention relates to a novel traditional Chinese medicine preparation for children and adults, in particular to a bacteriostatic foot-protecting emulsifiable paste, which is characterized in that the product only comprises a main medicine and an emulsifier, the main medicine is cinnamon extract and is extracted by adopting a traditional steam distillation method, the concentration of cinnamyl aldehyde and other cinnamon extract of the product is 51.8%, the oral dose of cinnamyl aldehyde can be 50mg / mL for human beings, the oral dose of cinnamyl aldehyde can be 150mg / mL for animals, and the oral dose of cinnamyl aldehyde can be 4mg / mL for animals. The emulsifier soybean soft phosphatide is extracted from pure natural soybeans, the extract can be directly stirred with the soybean soft phosphatide to form cream, the soybean soft phosphatide is widely used and eaten at home and abroad, compared with existing cosmetics, the cosmetic has the advantages of no toxicity, no side effect and safety and reliability in use, the technology is simple, the equipment is low in cost and easy to obtain, the occupied area is small, and the cosmetic is suitable for large-scale popularization and application. The requirements for operators are low, technical training is not needed, timing and quantification can be achieved, residues can be produced into antibacterial footbath liquid through simple alcohol extraction, the residues are free of pollution and easy to clean, and the product is used for foot care at night and does not affect use of other articles in the daytime.

The invention belongs to the field of anti-tumor compounds, and particularly relates to cinnamyl aldehyde / polygonatum polysaccharide-Pickering emulsion which is prepared from the following raw materials in dosage: cinnamyl aldehyde, olive oil, polygonatum polysaccharide and zein. The preparation method of the cinnamyl aldehyde / polygonatum polysaccharide-Pickering emulsion comprises the following steps: S1, dissolving cinnamyl aldehyde in olive oil to serve as an oil phase, and dissolving polygonatum polysaccharide in zein to serve as a water phase; and S2, mixing the water phase and the oil phase, and carrying out ultrasonic treatment on the mixed solution to obtain the cinnamyl aldehyde / polygonatum polysaccharide-Pickering emulsion. The invention further discloses application of the compound in preparation of anti-tumor drugs. The problems that in the prior art, cinnamyl aldehyde is poor in solubility, poor in stability and difficult to prepare medicines can be solved, the solubility of cinnamyl aldehyde and the stability of cinnamyl aldehyde in gastrointestinal tracts can be remarkably improved, and the cinnamyl aldehyde pharmaceutical composition has a good anti-tumor effect and has sensitization and synergistic interaction effects on chemotherapy.

The utility model relates to the technical field of cinnamyl aldehyde extraction, and provides a cinnamyl aldehyde separation and extraction device which comprises a controller and a turnover mechanism. According to the cinnamyl aldehyde separating device, the first grinding roller, the first motor, the second grinding roller and the second motor are arranged, raw materials are preliminarily crushed through the first grinding roller, large particles obtained after crushing are crushed again through the second grinding roller, it is guaranteed that the crushed particles are uniform in size, the cinnamyl aldehyde separating efficiency is improved, the screening plate and the vibrators are arranged, and the vibrators work, so that the separating efficiency of cinnamyl aldehyde is improved. The screening plate is driven to vibrate, raw materials crushed by the first grinding roller are screened, large particles are left above and then enter the second grinding roller along with vibration for secondary crushing, the vibration in the funnel can be counteracted through the arrangement of the flexible connection, the vibration is prevented from influencing the work of the extraction tank, and through the arrangement of the connecting seat, the heater and the protection pipe, the extraction tank is prevented from being damaged. Water enters the extraction tank from the electromagnetic valve, the heater works, heat is transferred into the mixed liquid through the protection pipe, and the interior is heated.

The invention discloses a preparation method of composite meal replacement powder with multi-plant synergistic nutrition, and relates to the technical field of food nutrition and healthy food processing, and the preparation method comprises the processes of raw material pretreatment, drying treatment, crushing treatment and mixing. According to the preparation method of the multi-plant synergetic nutrition composite meal replacement powder, synergetic supply of high-quality protein, low-GI carbohydrate, dietary fiber, unsaturated fatty acid and multiple vitamins and mineral substances is achieved through scientific proportioning, the full-nutrition meal replacement requirement is met, and quinoa and pea protein are complementary to improve the essential amino acid spectrum; rS3 type resistant starch in the Chinese yam and cinnamyl aldehyde jointly participate in blood sugar regulation, and the phyllanthus emblica is rich in natural antioxidant substances, is beneficial to improving immunity, and is suitable for diabetes people, weight control people and lactose intolerant vegetarian diet people.

The invention belongs to the technical field of catalysts, and relates to preparation and application of a supported Pt-based alloy catalyst. The Pt-based alloy is confined in a KIT-6 mesoporous channel through a double-solvent impregnation method, and a metal precursor preferentially enters the channel by utilizing competitive adsorption of a hydrophilic solvent and a hydrophobic solvent, so that uniform distribution of metal particles in the channel is realized, and agglomeration of the metal particles on the outer surface of the carrier is effectively avoided. Rich silicon hydroxyl on the surface of the KIT-6 carrier is used as an anchoring point, so that the interaction between metal and the carrier is enhanced, and the stability of the catalyst is improved. The Pt-based alloy catalyst prepared by the invention shows excellent C = O bond selectivity in the selective hydrogenation reaction of cinnamyl aldehyde, and the preparation process is simple, easy to amplify and good in industrial application prospect.

The invention discloses an emulsion gel type bread butter substitute with natural antibacterial activity and a preparation method of the emulsion gel type bread butter substitute, and belongs to the field of food processing. The preparation method of the emulsion gel comprises the following steps: (1) respectively dissolving cinnamyl aldehyde, tannic acid and zinc acetate, performing mixed ultrasonic treatment, adding a chitosan solution, mixing, and uniformly stirring to obtain a cinnamyl aldehyde-tannic acid-chitosan ternary composite particle suspension as a water phase; (2) dissolving curcumin in soybean oil, and performing ultrasonic treatment to completely dissolve curcumin as an oil phase; (3) mixing the water phase solution with the oil phase and the glycyrrhizic acid solution, and shearing and stirring at a high speed to obtain emulsion gel; (4) using the emulsion gel as a butter substitute for preparing toast bread; the prepared emulsion gel can prolong the shelf life of bread while replacing butter in the bread, and has the application potential of replacing synthetic preservatives.

According to the antibacterial and printable modified transparent packaging film provided by the invention, aminated cinnamyl aldehyde is introduced into a polyurethane coating as an antibacterial and fresh-keeping component, and free cinnamyl aldehyde is released through water vapor in air, so that the function of inhibiting growth of microorganisms on the surface of the coating for a long time is realized. The antibacterial component can effectively reduce the activity of bacteria and molds on the surfaces of the fruits, so that the storage life of the fruits is prolonged, the preservation effect of the fruits is improved, meanwhile, the adhesive force, the mechanical property and the printability of the coating are not affected, all the raw materials are industrial-grade raw materials, and the manufacturing cost and the use cost are reduced.

The invention discloses a preparation method of a high-precision developing antibacterial intelligent film developed based on alizarin. The preparation method of the intelligent film comprises the following steps: dissolving alizarin in an ethanol solution to obtain an alizarin ethanol solution; adding polyvinylpyrrolidone and ethyl cellulose, and uniformly mixing to obtain a shell spinning solution; mixing cinnamyl aldehyde and polyoxyethylene with water and ethanol to obtain a core layer spinning solution; and preparing the film by using a coaxial electrostatic spinning technology. According to the invention, the shell layer is a film with moderate hydrophobicity obtained by mixing a hydrophilic material and a hydrophobic material, and alizarin is added as a color developing substance, so that an obvious color developing effect is realized. Cinnamyl aldehyde is added into a core layer solution, so that the film has antibacterial and antioxidant functions; the fibers with the core-shell structure are prepared through the coaxial electrostatic spinning technology, cinnamyl aldehyde can be wrapped, release of cinnamyl aldehyde is slowed down, and the antibacterial effect of the intelligent film is enhanced.

The invention belongs to the technical field of biological prevention and control, and particularly relates to application of a Tilletia foetida Kuhn bacterial suspension in inhibition of apple black beancurd skin fungi. The Tilletia foetida suspension can be used for directly or indirectly inhibiting the growth of apple black beetle fungi (Valsa mali) and preventing and treating apple tree canker. Results of embodiments show that under the condition of the same medicament concentration, compared with citral and cinnamyl aldehyde, the Tilletia foetida suspension can significantly inhibit the growth of apple black beetle shells and prevent and treat apple tree canker.

According to the method for preparing cinnamyl alcohol through cinnamyl aldehyde hydrogenation, isopropyl alcohol is adopted as a hydrogen source and a solvent of a reaction system, precious metal modified TiO2-CeO2 is adopted as a catalyst, and cinnamyl aldehyde is subjected to selective hydrogenation under visible light and normal temperature and pressure to synthesize cinnamyl alcohol. According to the invention, isopropanol is used as a hydrogen source and a solvent, so that high-pressure hydrogen is avoided, and potential safety hazards in the reaction process are remarkably reduced; the precious metal modified TiO2-CeO2 can be excited under visible light, normal temperature and normal pressure to perform selective hydrogenation on cinnamyl aldehyde to synthesize cinnamyl alcohol; according to the present invention, the use amount of the noble metal in the hydrogenation reaction system is significantly reduced, the conversion rate of the selective hydrogenation is high, the good economy and sustainability are provided, the preparation process is simple, the industrial mass production is easily achieved, and the green chemical development direction is met.

The present application relates to cinnamyl aldehyde selective hydrogenation technical field, specifically to a kind of Pt nanoparticle supported porous SiC catalyst and its application in cinnamyl aldehyde hydrogenation reaction.The selectivity of cinnamyl alcohol is lower in conventional cinnamyl aldehyde selective hydrogenation reaction, it is difficult to reach more than 90%.For the above technical problem, the present application provides a kind of Pt nanoparticle supported porous SiC catalyst, mainly utilizes acid etching method to carry out porous modification to polycrystalline SiC, by adjusting the Si / C ratio of its surface to enhance the hydrogen overflow concentration of the obtained catalyst Pt / SiC surface, Pt nanoparticle in the channel of catalyst can preferentially adsorb C=O bond in reaction and make it active, so as to realize the high activity of the obtained catalyst in cinnamyl aldehyde hydrogenation reaction and the high selectivity of cinnamyl alcohol product.

The invention discloses cherry essence and a preparation method thereof. The cherry essence is prepared from the following raw materials in parts by mass: 8 to 10 parts of benzaldehyde, 4 to 8 parts of hexanal, 1 to 3 parts of 2-hexenal, 0.5 to 2 parts of (E)-2-hexene-1-ol, 3 to 7 parts of ethyl hexanoate, 1.5 to 3.5 parts of geraniol, 2.4 to 4.2 parts of heliotropin, 0.4 to 0.9 part of ionone, 0.8 to 1.2 parts of anisyl acetate, 0.2 to 0.6 part of iris congealed fat, 1.3 to 3.2 parts of rose oil, 3.2 to 5.6 parts of ethyl maltol and 2.3 to 4.8 parts of cinnamyl aldehyde. The cinnamyl aldehyde is added into the cherry essence, so that the problem of bitter apricot kernel taste in the cherry essence is solved.

The invention belongs to the technical field of catalysts, and particularly discloses a quantum dot modified Pt / SiC catalyst as well as a preparation method, an activation method and application thereof. Quantum dot modified SiC serves as a carrier of the catalyst, Pt is loaded on the surface of the carrier through a liquid phase reduction method, the quantum dot modified Pt / SiC catalyst is obtained, and through modification of CeO2 QDs, adsorption of C = O in cinnamyl aldehyde is enhanced. The invention also provides a method for improving the hydrogenation performance by using a hydrogen overflow activated catalyst, and the Pt / CeO2 QDs-SiC catalyst subjected to activation pretreatment further enhances the adsorption of C = O and improves the hydrogenation selectivity, so that the cinnamyl aldehyde can be efficiently and selectively hydrogenated to generate cinnamyl alcohol under milder conditions.