160 results about "Carvacrol" patented technology

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 a polyurethane coating and a preparation method thereof, and belongs to the technical field of antibacterial coatings. The preparation method of the polyurethane coating comprises the following steps: carrying out acyl chloride substitution reaction on a phenolic substance and a chlorine donor to obtain an intermediate reactant, and carrying out conjugate addition reaction on the intermediate reactant and an amine substance with hydroxyl groups at two ends to obtain antibacterial diol; reacting the antibacterial diol with isocyanate to obtain a polyurethane coating; the phenolic substance is selected from at least one of thymol, carvacrol, paeonol, catechol and theaflavin. The antibacterial coating is applied to the aspect of an antibacterial coating of a food contact part, the problem that the antibacterial property of an existing antibacterial coating is difficult to last is solved, and the antibacterial coating has the synergistic antibacterial effect of killing and defending bacteria.

The present application discloses a feed additive and preparation method for promoting intestinal health of livestock and poultry, which comprises the following steps: S1, adding water to montmorillonite and sodium chloride, stirring evenly to form a suspension slurry with a concentration of 10% to 20%, sodiumizing at room temperature, and re-forming the slurry with water to a concentration of 15% to 40%; S2, slowly adding cetylpyridinium chloride to the slurry of step S1 under stirring, and continuously stirring at room temperature for a certain time; S3, slowly adding carvacrol to the slurry of step S2 under stirring, and continuously stirring at room temperature for a certain time; S4, dehydrating the reaction solution of step S3, and drying the obtained filter cake; the dried filter cake needs to be inspected to see if it is completely dried; S5, crushing to obtain a feed additive for promoting intestinal health of livestock and poultry. Adding 0.1% of the feed additive for promoting intestinal health of livestock and poultry to the diet of laying hens can increase the egg production rate of laying hens by 1.5 percentage points, effectively control spotted eggs, and increase the qualified egg rate by 2 percentage points.

The invention discloses a diaphorina citri adult repellent composition and application thereof. The repellent composition is prepared from the following components in parts by weight: 0.1 to 1.2 parts of nootkatone, 0.05 to 1.0 part of carvacrol, 4.0 to 6.5 parts of thymol and 3.0 to 5.0 parts of sophocarpidine. The repelling effect of the repellent composition on diaphorina citri adults is better than that of a single component, and the synergistic diaphorina citri adults repelling effect is achieved among the components. The components of the repellent composition are low in price, the cost for manufacturing the lure can be reduced, and the repellent composition is suitable for popularization and promotion.

The invention provides a method for improving typhoon disaster resistance stress capability of Hainan meat pigeons, which comprises the following steps: step (1), feeding salt water and composite multivitamins to the meat pigeons, injecting vaccines, disinfecting a pigeonry, and adjusting the temperature and humidity of the pigeonry; (2) feeding the meat pigeons with feed for 2-3 times every day, wherein the feeding amount of the feed is 40-50g / pigeon; (3) feeding the meat pigeons with health-care sand for 1-2 times every day, wherein the feeding amount of the health-care sand is 1%-1.5% of the weight of the meat pigeons. After typhoon, matched carvacrol, pepper extract, betel nut extract and the like are used as disinfectant raw materials to disinfect the pigeonry, so that spreading and infection of pathogenic bacteria after typhoon can be reduced, the proper environment temperature of the pigeonry is adjusted, and the stress reaction of meat pigeons is reduced; by adjusting and optimizing the feed formula and the health-care sand formula of the meat pigeons, the immunity of the meat pigeons can be improved, digestion and absorption of the meat pigeons on feed nutrient substances are promoted, the resistance of pathogenic bacteria is enhanced, the growth efficiency is improved, and the typhoon resistance of the meat pigeons is improved.

The invention discloses a degradable preservative film and a preparation method thereof. The film takes nano chitosan / agarose in a ratio of 1: 1 as a matrix, contains 0.5-5wt% of PVA (Polyvinyl Alcohol), 1-4wt% of protein powder or starch, 0.2-3wt% of tea polyphenol / carvacrol, 5-20wt% of glycerol and optional 5-15wt% of polylactic acid, and is cross-linked with sodium alginate. And carrying out tape casting at 55-65 DEG C, and carrying out gradient drying at 40-50 DEG C, thereby obtaining the product. The film is compact and flexible, the breaking strength is larger than or equal to 69 MPa, the oxygen permeability is low, the inhibition zone on six germs is enlarged by 3-4 mm, 98% of natural soil is degraded 20 days later, and no toxic smoke is generated during incineration. The biodegradable film is solvent-free in preparation, can be produced by existing equipment, is lower than a traditional biodegradable film in cost, can be in direct contact with food, remarkably prolongs the fresh-keeping period of fruits and vegetables, replaces PE and PVC, and solves white pollution.

The invention discloses a strawberry and grape fresh-keeping composite coating film, a preparation method and application, the fresh-keeping composite coating film mainly comprises chitosan, oxidized starch, phytic acid and carvacrol, the rotting rate of strawberries and grapes is reduced, the chromaticity and hardness of the strawberries and the grapes are maintained, the aging of the strawberries and the grapes is delayed, and the fresh-keeping effect of the strawberries and the grapes is improved. The growth of rot-causing fungi alternaria alternata and Penicillium Orsenii in strawberries and grapes is inhibited, the quality of strawberry and grape fruits can be maintained, and the storage period of the strawberries and the grapes can be prolonged.

The invention belongs to the technical field of external pharmaceutical compositions, and particularly relates to a temperature phase change microsphere antibacterial gel and a preparation method thereof. The gel is composed of three core components: temperature phase change microspheres, a composite antibacterial component and a carbomer matrix solution. The antibacterial component comprises carvacrol, oregano oil, cinnamyl aldehyde, citral, gallic acid and nano-silver, and aims to realize a broad-spectrum and efficient antibacterial effect. Hydrogel is prepared into microspheres (the phase change temperature is 33 DEG C) by utilizing a micro-fluidic chip technology, antibacterial components are wrapped in the microspheres, and then the temperature phase change microsphere antibacterial gel is compounded. When the gel is daily stored, the microspheres can realize long-time activity maintenance of antibacterial components and play a role in protecting the active components. When the gel is smeared on the skin surface, the human body temperature (36-37 DEG C) is higher than the phase change temperature (33 DEG C), the gel microspheres are subjected to phase change, sustained and controlled release of antibacterial components is achieved, and the better antibacterial effect is achieved.

Methods of making bioactive compound-loaded nanoparticles are provided. The methods harness naturally-occurring biopolymers to produce nanoparticles from raw plant materials. Methods include contacting plant-derived materials with alkaline solution with agitation to deprotonate the bioactive materials and biopolymers to form nanoparticles. In some forms, the methods contact the nanoparticle with an acid to re-protonate the components and more stable nanoparticles. The bioactive compounds can be extracted from raw plants and / or plant parts, including turmeric, ginger, clove, thyme, pepper, and rosemary. The bioactive compounds include curcumin, gingerols, shogaols, eugenol, thymol, carvacrol, capsaicin, and rosmarinic acid. Compositions and formulations containing bioactive-compound loaded nanoparticles are also provided.

The invention relates to the technical field of packaging materials, and discloses a preparation method of an antibacterial and antiseptic food packaging material, and the antibacterial and antiseptic food packaging material comprises 100 parts by weight of polyvinyl alcohol, 2-15 parts by weight of cross-linked beta-cyclodextrin included thyme oil, and 1-1.5 parts by weight of glycerol. The hyperbranched polymer cross-linked beta-cyclodextrin contains a three-dimensional hyperbranched dendritic molecular chain and has a higher inclusion amount for thyme oil, so that more active antibacterial components such as thymol and carvacrol are included, and the antibacterial and anticorrosive properties of the packaging material are remarkably improved after the hyperbranched polymer cross-linked beta-cyclodextrin is added into the polyvinyl alcohol film packaging material. The hyperbranched polymer cross-linked beta-cyclodextrin contains a flexible polyether hyperbranched molecular chain, has a certain toughening effect on polyvinyl alcohol, and is beneficial to improving the elongation at break and toughness of the polyvinyl alcohol film packaging material.

The present invention discloses a method for preparing porous fibers with a wool-like curly structure, belonging to the technical field of synthetic fibers. The method comprises the following steps: a) mixing polyester chips with carvacrol, a silicone additive, and a toughening agent to obtain a core premix; and b) mixing the polyester chips with nano-calcium carbonate, carvacrol, a silicone additive, and a toughening agent to obtain a skin premix; and c) melting the core premix and the skin premix separately, and then injecting them into a composite spinning assembly for spinning to obtain a hollow core-skin composite spun yarn. b) subjecting the hollow core-skin composite spun yarn to side-blowing cooling, preliminary drafting, citric acid impregnation, water washing, and drying to obtain a surface porous fiber. c) subjecting the surface porous fiber to directional hot blowing, cooling and shaping, oiling, web-interlacing, re-drafting, and winding to obtain a porous fiber with a wool-like curly structure. The fiber obtained by the present invention has high warmth retention, high flexibility, and anti-pilling effects, and can meet higher usage requirements.

The invention provides a nano-emulsion for preventing and treating porcine respiratory diseases and a preparation method of the nano-emulsion, and belongs to the field of preparation of nano-emulsion preparations. The nano-emulsion comprises an outer water phase, and a first water-in-oil emulsion core, a second water-in-oil emulsion core, a third water-in-oil emulsion core and a fourth water-in-oil emulsion core which are dispersed in the outer water phase, wherein oil phases of the first water-in-oil emulsion core and the second water-in-oil emulsion core comprise eucalyptus globulus oil and peppermint oil; the D90 particle size of the inner water phase of the first water-in-oil emulsion core is between 100nm and 150nm; the D90 particle size of the inner water phase of the second water-in-oil emulsion core is between 250 nm and 300 nm; oil phases of the third water-in-oil emulsion core and the fourth water-in-oil emulsion core comprise carvacrol and thymol; the D90 particle size of the inner water phase of the third water-in-oil emulsion core is 200-300 nm; and the D90 particle size of the inner water phase of the fourth water-in-oil emulsion core is 500-700nm. The nano-emulsion has long drug effect and long-term stability.

The invention relates to the field of daily chemicals, in particular to a natural anti-dandruff agent and application thereof. The natural anti-dandruff agent is prepared from the following components in parts by weight: 0.01 to 5 parts of carvacrol, 0.01 to 10 parts of radix astragali seu hedysari extract and 0.01 to 10 parts of hamamelis virginiana extract. The natural anti-dandruff agent provided by the invention contains the carvacrol, the alpine astragalus extract and the hamamelis virginiana extract, and the three natural components have a synergistic effect, so that the composition has mild, antibacterial and anti-inflammatory effects, not only can effectively remove dandruff, but also can promote scalp health and recover natural balance.

The invention discloses an edible fish collagen-based antibacterial active membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing silver carp skin collagen; the preparation method comprises the following steps: preparing an epsilon-polylysine / sulfobutyl-beta-cyclodextrin / carvacrol inclusion compound; the preparation method comprises the following steps: dissolving an epsilon-PL / SBE-beta-CD / CAR inclusion compound and silver carp skin collagen in ultrapure water, carrying out a stirring reaction at a certain temperature, adding glycerin, and carrying out stirring so as to obtain a membrane casting solution; and performing ultrasonic degassing on the membrane casting solution, injecting the membrane casting solution into a mold, storing the mold in a constant-temperature and constant-humidity box with the temperature of 26 DEG C and the relative humidity of 50% for 48 hours, and uncovering the membrane to obtain the edible fish collagen-based antibacterial active membrane. The preparation method is simple in technological process, and the prepared edible fish collagen-based antibacterial active film is high in antibacterial performance and good in mechanical performance. The invention provides an effective prevention and treatment strategy for the problem of microbial pollution.

The present invention discloses a recombinant bacterium for synthesizing key components of plant essential oil, a construction method thereof and applications. The recombinant bacterium contains exogenous genes; the exogenous genes include genes of terpene synthase, cytochrome P450 and short-chain dehydrogenase; the key components of the plant essential oil include thymol and carvacrol. By introducing the genes of terpene synthase, cytochrome P450 and short-chain dehydrogenase, the present invention successfully constructs a recombinant bacterium capable of synthesizing thymol and carvacrol, realizing the heterologous synthesis of thymol derivatives. Moreover, by using the recombinant bacterium of the present invention to transform and produce thymol and carvacrol, the production efficiency is high, it is green and environmentally friendly, and the cost is low, having good industrial application prospects.

The invention provides a preparation method of a degradable composite food film based on a bacteriostatic emulsion and a food film, and belongs to the field of food packaging, and the preparation method comprises the following steps: preparing a bacteriostatic agent carvacrol oil-in-water system emulsion; adding glycerol into the biodegradable polymer and the biological polysaccharide, and fully and uniformly mixing; adding the bacteriostatic agent emulsion into the mixture; according to the polysaccharide / bacteriostatic agent emulsion composite food film and the preparation method thereof, a modern production process is adopted, the defect that a hydrophobic bacteriostatic agent needs to be dissolved in an organic solvent and then added into a polymer matrix is overcome, the influence of the organic solvent on food and human health and safety is reduced, and the polysaccharide / bacteriostatic agent emulsion composite food film is prepared. The produced food film is environment-friendly and non-toxic, can be completely biodegraded, is low in water absorption and water vapor permeability and strong in antibacterial performance, can effectively prevent food from being polluted and deteriorated, and provides a novel packaging material for the food industry.

The present invention relates to the technical field of packaging materials, and discloses a preparation method of an antibacterial and antiseptic food packaging material, the antibacterial and antiseptic food packaging material includes 100 parts by weight of polyvinyl alcohol, 2-15 parts by weight of cross-linked β-cyclodextrin inclusion thyme oil, and 1-1.5 parts by weight of propylene glycol. The hyperbranched polymer cross-linked β-cyclodextrin of the present invention contains a three-dimensional hyperbranched dendritic molecular chain, has a higher inclusion amount for thyme oil, thereby including more active ingredients such as thymol and carvacrol, and is added to the polyvinyl alcohol film packaging material, significantly improving the antibacterial and antiseptic properties of the packaging material. The hyperbranched polymer cross-linked β-cyclodextrin contains a flexible polyether hyperbranched molecular chain, which has a certain toughening effect on polyvinyl alcohol, and is conducive to improving the elongation at break and the toughness of the polyvinyl alcohol film packaging material.

Provided are a cosurfactant-free microemulsion encapsulating glycyrrhetinic acid, a preparation method therefor, and use thereof. The cosurfactant-free microemulsion comprises carvacrol / thymol, a fatty acid, a nonionic surfactant, and water. Based on the mass percentage of the raw materials, the glycyrrhetinic acid accounts for 0.1-5%, the carvacrol / thymol accounts for 0.1-5%, the fatty acid accounts for 0.1-10%, the nonionic surfactant accounts for 1-30%, and the balance is made up to 100% with water. Carvacrol / thymol not only increases the solubility of glycyrrhetinic acid, but also promotes the transdermal absorption of glycyrrhetinic acid, and is a cosmetic composite efficacy composition having antioxidant, anti-inflammatory, and antibacterial effects.

The invention provides a breeding method for improving disease resistance of carassius auratus var pengze myxosporidium. The breeding method comprises the following steps of S1, breeding environment treatment, S2, healthy fry selection and purchase, S3, fry disinfection, S4, fry putting, S5, feeding management, S6, water quality management, S7, disease prevention and detection and S8, emergency treatment. In the fry disinfection link, a biological disinfectant composed of tea saponin, a photosensitive component, carvacrol, artesunate and choline-lactic acid ionic liquid is used for soaking carassius auratus var pengze fry, meanwhile, LED light irradiation is used for assistance, the disinfection components can jointly play a role after penetrating into myxosporidium, growth and reproduction of the myxosporidium are inhibited, and therefore the carassius auratus var pengze fry can be prevented from being damaged by the carassius auratus var pengze. Therefore, the effect of effectively killing myxosporidia is achieved. In the emergency treatment link, an insect-resistant agent composed of a glycan-mercaptosuccinic acid conjugate, antibacterial peptide, artesunate, nano-zinc oxide, triptolide and carvacrol is used, and through the synergistic effect of the components, multi-target efficient killing of myxosporidium is achieved.

The invention belongs to the technical field of pesticides, and particularly relates to a bactericidal composition for preventing and treating bitter gourd wilt. The invention relates to a bactericidal composition for preventing and treating bitter gourd wilt. The active ingredients of the bactericidal composition are compounded from fluindazole amine and carvacrol or oxathiapiprolin. A compounding strategy is adopted, the fluindazole amine and the carvacrol or the oxathiapiprolin are compounded, an indoor biological activity test shows that the compounded combination has a synergistic effect on bitter gourd wilt germs, compared with a single component, the prevention and control effect on bitter gourd wilt can be improved, then the bitter gourd wilt is effectively prevented and controlled, and the pesticide composition has a good application prospect. A support can be provided for developing a novel medicament for preventing and treating bitter gourd fusarium wilt.

The present application belongs to the technical field of pesticides, and particularly relates to a fungicidal composition for preventing and treating fusarium wilt of bitter gourd. The fungicidal composition for preventing and treating fusarium wilt of bitter gourd comprises fluazinam and carvacol or flutianil as active ingredients. The fluazinam is compounded with carvacol or flutianil by using the compounding strategy. The indoor bioactivity test shows that the compound combination has a synergistic effect on fusarium wilt of bitter gourd. Compared with single components, the compound combination can improve the prevention and treatment effect on fusarium wilt of bitter gourd, thereby effectively preventing and treating fusarium wilt of bitter gourd and providing support for developing new pesticides for preventing and treating fusarium wilt of bitter gourd.

The invention provides an MCM-41 composite cinnamyl aldehyde-carvacrol essential oil nano edible film and a preparation method thereof. The preparation method comprises the following steps: preparing modified MCM-41, constructing MCM-41 composite cinnamyl aldehyde-carvacrol essential oil nano particles, and preparing a multifunctional composite edible film formula. According to the invention, cinnamyl aldehyde-carvacrol essential oil is wrapped with lecithin and selenoprotein, and MCM-41 is subjected to carboxyl modification. The modified MCM-41 can improve the compatibility with hydrophilic phospholipid and protein, and increase the loading capacity for essential oil nanoparticles. The loaded MCM-41 is compounded with gelatin, dextran and D-selenomethionine to form a film, and the D-selenomethionine has oxidation resistance, so that the edible film is endowed with excellent antibacterial and oxidation resistance, and the problems of single performance, poor stability of active ingredients and the like of a traditional edible film are solved.

The invention provides a compound composition of carvacrol and hinokitiol, a bactericide and application. The mass ratio of the carvacrol to the hinokitiol is (1-8): (6-1). The carvacrol and the natural product hinokitiol are compounded, so that the tomato fusarium wilt can be prevented and treated, and powdery mildew, gray mold and the like of various crops can be prevented and treated. The binary compound agent has a remarkable synergistic effect on preventing and treating the diseases, the use amount of a single agent can be remarkably reduced, and the compound agent is expected to be developed into a new generation of green agricultural botanical fungicide.

The invention belongs to the technical field of organic synthesis, and particularly discloses a dehydrogenation catalyst and a preparation method and application thereof in carvacrol synthesis, the dehydrogenation catalyst takes a gamma-aluminum oxide-molecular sieve composite product as a carrier, takes Pd as a main active component, takes Ni and Mn as auxiliaries, and comprises the following components in percentage by mass: 3-6% of Pd, 0.3-1.0% of Ni and the balance of Mn. The mass percent of Mn is 1-3%, and the balance is the gamma-aluminum oxide-molecular sieve composite carrier. The catalyst has a good dehydrogenation effect in carvacrol preparation through carvacrol dehydrogenation, continuous reaction is adopted in the reaction, safety, controllability and no pollution are achieved, 99.5% of finished products can be obtained through simple rectification of carvacrol flowing out of a reactor outlet, the reaction efficiency is greatly improved, no waste water is generated in the reaction, and the method is suitable for industrial production. And new social benefits and economic benefits are created while the environmental protection problem in production is solved.

The invention belongs to the technical field of food attractants, and particularly relates to a armyworm food attractant and application thereof. The invention relates to a armyworm food attractant, which is prepared from the following components in percentage by mass: 6 to 12 percent of food attractant component, 3 to 8 percent of smell attractant component, 2 to 4 percent of absolute ethyl alcohol, 2 to 4 percent of distilled water and the balance of slow-release carrier, wherein the food attractant component is prepared from D-fructose and L-alanine; the olfactory attraction component is prepared from thymol, carvacrol and decalactone or modified decalactone. According to the present invention, the olfaction attraction component composed of thymol, carvacrol and gamma-decalactone or modified decalactone is added to the food attraction component composed of D-fructose and L-alanine, such that the attraction effect on the adult armyworms can be significantly improved, and the important meaning is provided for insect pest monitoring and green prevention and control of armyworms.

The aim is to provide a beer-flavored beverage in which the potato and bean-like odors derived from malt are suppressed, while also providing the dry and smooth characteristics typical of beer-flavored beverages. [Solution] The above problem is solved by providing a beer-flavored beverage that uses malt as a raw material and contains carvacrol and linalool, wherein the ratio of the carvacrol content to the linalool content (carvacrol content / linalool content) is less than 0.40.

The present application relates to the technical field of plant essential oil, and particularly discloses an essential oil composition and application thereof.The essential oil composition comprises the following components: carvacrol, thymol, lemon oil, peppermint oil, bay leaf oil, patchouli oil, geranium oil, perilla oil, cinnamon oil, clove oil and boldo oil.The essential oil composition provided by the present application is natural, environment-friendly, has good sterilization effect, comfortable smell, no obvious skin irritation, harmless to human body, and friendly to the environment, and can be applied to the preparation of antimicrobial products.

The present application provides a carvacrol tertiary amine derivative, a preparation method and an application in preparing a plant source fungicide, the carvacrol tertiary amine derivative contains a cyclic secondary amine substituent, the preparation method of the derivative is that an intermediate II is dissolved in ethanol, then a cyclic secondary amine is added, heating and stirring are carried out, reflux is kept, after TLC detection reaction is completed, ethanol is removed under reduced pressure, then extraction, water washing and purification are carried out, and the carvacrol tertiary amine derivative is prepared. The carvacrol tertiary amine derivative prepared by the present application exhibits obvious bacteriostatic activity on cucumber anthracnose fungus, tomato botrytis blight fungus, wheat scab fungus and wheat take-all fungus. The preliminary bacteriostatic activity of carvacrol tertiary amine derivatives 1, 3, 10 and 14 on wheat take-all fungus is 60.8%-83.2%, which is significantly better than that of positive control hymexazol (48.6%) and reference control carvacrol (45.0%).

The invention discloses an antibacterial packaging material as well as a preparation method and application thereof. The antibacterial packaging material is prepared from pineapple leaf fiber carboxymethyl cellulose, carboxymethyl cellulose, cationic starch, 3-hydroxyl octoate, alpha-tocopherol, dimethylbiguanide hydrochloride, a plasticizer, nitrogen-doped carbon quantum dots, plant essential oil, nano zeolite powder, carvacrol and citric acid. The preparation method comprises the following steps: dispersing the cationic starch in the deionized water, dispersing the pineapple leaf fiber carboxymethyl cellulose and carboxymethyl cellulose in the deionized water, completely dissolving, adding into a starch solution, sequentially adding the rest components, uniformly mixing, heating, reacting, forming a film, and drying to obtain the packaging material. According to the antibacterial packaging material, the cationic starch, the carbon quantum dots, the plant essential oil and other related components are combined for the first time to form a novel antibacterial packaging material, the antibacterial performance is remarkably improved and kept for a long time through the synergistic effect of all the components, and the antibacterial packaging material is high in material stability, simple and convenient in preparation process, low in cost and high in application and popularization value.

The invention provides application of carvacrol in preparation of a feed additive and / or feed for repairing intestinal injury of piglets, and belongs to the technical field of animal feed. The invention discloses application of carvacrol in preparation of a feed additive and / or feed for repairing intestinal injury of piglets. Experiments show that weaning stress causes piglet growth performance reduction and intestinal barrier injury; the feed added with CAR can effectively repair intestinal injuries of piglets, maintain the integrity of intestinal barriers and regulate the intestinal microbial structure, and carvacrol also has the activity of resisting the characteristics of porcine epidemic diarrhea virus and porcine delta coronavirus. The invention provides a reasonable feeding strategy and theoretical support for piglet intestinal injury caused by weaning stress.