51 results about "Eugenol" patented technology

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.

A pest control composition includes from about 4 wt % to about 10 wt % of sodium lauryl sulfate; one or more C5 to C9 hydrotropic salt; from about 1 wt % to about 10 wt % of one or more active ingredients selected from the group consisting of corn mint oil, peppermint oil, spearmint oil, rosemary oil, thyme oil, citronella oil, clove oil, cedarwood oil, cinnamon oil, geranium oil, eugenol, 2-phenylethyl propionate, menthol, menthone, thymol, carvone, camphor, methyl salicylate, p-cymene, linalool, geraniol, cinnamyl acetate, cinnamic alcohol, cinnamaldehyde, citronellol, eucalyptol / 1,8-cineole, alpha-pinene, bornyl acetate, gamma-terpinene, and combinations thereof; and from about 60 wt % to about 95 wt % of water. The pest control composition exhibits a water peak in a 2H spectrum having a width encompassing 90% of the area of the entire water signal of about 50 Hz or more, as determined by the 2H NMR Method.

This invention discloses a multi-component refined compound of clove obtained by dry distillation, its preparation method, and its application. The preparation method involves: placing clove powder in a high-temperature dry distillation reactor for localized puffing reaction to obtain eugenol; mixing the puffed clove powder with a composite solvent and then repeatedly heating and extracting the mixture to obtain a precursor of the refined compound; centrifuging the precursor and collecting the supernatant to obtain the final product. This method, through localized puffing reaction, significantly increases the bulkiness of the clove powder, effectively enhancing the release of aroma compounds such as eugenol, acetyleugenol, and caryophyllene from the clove; using this refined compound as a flavoring agent in heated non-combustible cigarettes effectively improves the richness and fullness of the smoke.

The invention relates to the technical field of building energy conservation, heat preservation and heat insulation materials, and discloses a flame-retardant phase-change heat preservation and heat insulation building material and a preparation method thereof.The preparation method of the flame-retardant phase-change heat preservation and heat insulation building material comprises the following steps that paraffin is loaded in ZnO / CuO hollow microspheres to obtain phase-change microspheres; modifying the phase change microspheres with polydopamine and acryloyl chloride to obtain functionalized phase change microspheres; the preparation method comprises the following steps: carrying out graft polymerization on a phosphorus-containing eugenol compound and 1-amino-5-hexene-2-alcohol on the functionalized phase change microspheres to obtain multifunctional phase change microspheres; polyether polyol, functionalized polyol, myricetin, multifunctional phase-change microspheres and the like are used as raw materials, foaming is performed, and the flame-retardant phase-change heat-preservation and heat-insulation building material is obtained. The flame-retardant phase-change heat-preservation and heat-insulation building material is excellent in heat-preservation and heat-insulation performance, flame-retardant performance and mechanical performance, has anti-ultraviolet performance and antibacterial and mildew-proof performance, can reduce erosion damage caused by external conditions, and prolongs the service life.

The application discloses application of eugenol in preparation of a bacteriostatic agent for enhancing symbiotic nitrogen fixation efficiency of legume-rhizobium, and relates to the field of agricultural microorganisms. ‑1 The application is safe and non-inhibiting to seed germination of Medicago polymorpha and target rhizobium LL2 in a concentration range of 500-1000 muL / L ‑1 of eugenol, can significantly reshape rhizosphere microbial community structure by selectively inhibiting competitive microorganisms such as bacillus and streptomyces in soil, and is environment-friendly and free of antibiotic residue risk, thereby providing a green and efficient new approach for improving symbiotic nitrogen fixation efficiency of legume-rhizobium.

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

The invention relates to the technical field of membrane material preparation, and particularly discloses a composite membrane loaded with a metal organic framework material and a preparation method and application thereof.Co2 + doping is conducted on a ZIF-8 framework, the electronic structure of the ZIF-8 framework is changed through introduction of Co2 +, the overall polarity is reduced, and therefore the interaction force between the ZIF-8 framework and eugenol molecules is enhanced; the adsorption capacity of the ZIF-8 material on the clove essential oil is improved, so that the antibacterial property and the oxidation resistance of the composite membrane material are improved; then a copolymerization reaction is initiated through free radicals, a layer of functional polymer is grafted on the surface of the double-bond modified MOF, the surface of the organically modified MOF has higher affinity to eugenol molecules, diffusion and adsorption processes of clove essential oil molecules to internal pore channels of the MOF are promoted, and the loading capacity of the clove essential oil is improved; the antibacterial property and the oxidation resistance of the composite membrane material are further improved.

A pest control composition having from about 4 wt % to about 10 wt % of sodium lauryl sulfate, one or more C5 to C9 hydrotropic salt, from about 1 wt % to about 10 wt % of an active ingredient selected from the group consisting of corn mint oil, peppermint oil, spearmint oil, rosemary oil, thyme oil, citronella oil, clove oil, cedarwood oil, cinnamon oil, geranium oil, eugenol, 2-phenylethyl propionate, menthol, menthone, thymol, carvone, camphor, methyl salicylate, p-cymene, linalool, geraniol, cinnamyl acetate, cinnamic alcohol, cinnamaldehyde, citronellol, eucalyptol / 1,8-cineole, alpha-pinene, bornyl acetate, gamma-terpinene, and combinations thereof, and from about 60 wt % to about 95 wt % water. The pest control composition can exhibit a tan delta-1 value at a frequency of 1 Hz of from about 0.1 to about 2.

The invention discloses a theaflavin nano-composite with whitening and moisturizing effects, which is mainly prepared from theaflavin as an active component, an encapsulation carrier and a synergistic component, and has a core-shell structure with theaflavin as a core and a three-dimensional network formed by the encapsulation carrier as a shell, the purity of the theaflavin is not lower than 80%, and the mass ratio of the theaflavin-3-gallate to the theaflavin-3 '-gallate is 1: (0.8-1.2); the encapsulation carrier comprises modified silk fibroin, activated tamarind seed polysaccharide and self-assembly oligopeptide with pH responsiveness, and a three-dimensional network is formed through reaction; the synergistic interaction components are 2-o-ethyl ascorbic acid and eugenol. The invention also discloses a preparation method and application of the compound. The theaflavin nano-composite prepared by the invention has the advantages of high stability, good bioavailability, capability of quickly releasing active matters on the surface of skin in a weakly acidic environment, and realization of whitening and moisturizing effects.

The invention relates to a cyclodextrin grafted polyquaternary phosphonium salt eugenol ester antibacterial material, which has the following structure: m is the number of structural units of cyclodextrin, namely m = 1, m = 2 or m = 3; r1 is-CN or-CH3; r2 is phenyl or butyl; the anion X is one of Br <->, F <->, Cl <->, I <->, OH <->, CN <->, SCN <->, BF4 <->, PF6 <->, SO4 < 2->, CO3 < 2-> or AlCl4 <->, and X refers to the type of the anion; p is 0 or 2; x is 0 or 2; n is the grafting degree; y is the number of structural units of the quaternary phosphonium salt eugenol ester monomer; the product of y and n is the degree of polymerization, and P in-P-(R2) 3 refers to phosphorus element and is positive charge of quaternary phosphonium salt. Meanwhile, the invention further discloses a synthesis method of the antibacterial material. The cyclodextrin grafted polyquaternary phosphonium salt eugenol ester prepared by the invention has excellent antibacterial performance and good biocompatibility, can be applied to antibacterial coatings, medical devices or surface bacteriostasis of daily necessities and the like, and is a novel antibacterial material with potential application prospects.

The invention discloses a syringate compound capable of preventing and treating barn pests as well as a preparation method and application of the syringate compound. The syringate compound has the following molecular structure expression, and according to the design, the light stability is enhanced by utilizing a rigid cyclic structure of chrysanthemic acid, and the CarE activity can be inhibited through a propenyl side chain of eugenol, so that self metabolism inactivation of pyrethrin is blocked; .

The invention discloses an antibacterial antioxidant degradable composite film for litchi preservation and a preparation method thereof, and mainly relates to the field of fruit and vegetable preservation. The adhesive is prepared by mixing polyvinyl alcohol (PVA), fumed silica (FS), polyethylene glycol 400 (PEG 400), melatonin (MT) and eugenol (EG). The method further comprises the following steps: S1, preparing a PVA solution; s2, adding PEG (Polyethylene Glycol) 400 into S1, and uniformly stirring; s3, weighing a certain amount of FS, MT and EG, and dissolving the FS, MT and EG in absolute ethyl alcohol; s4, adding the mixed solution in the step S3 into the mixed solution in the step S2, and homogenizing; and S5, carrying out defoaming, curtain coating and drying treatment on the solution treated in the step S4 to finally obtain the PVA / FS / MT / EG composite film. The method has the advantages that the method can be used as a physical barrier, color deterioration, browning and rotting of the Feizixiao litchis can be actively and effectively inhibited under normal-temperature and low-temperature conditions through the synergistic effect of active ingredients in the film, and the shelf life of the collected Feizixiao litchis can be well prolonged.

The invention relates to the technical field of soil remediation, in particular to a soil remediation agent containing traditional Chinese medicine residue leavening and a preparation method of the soil remediation agent. By adding rice bran, peanut meal, dried orange peel residue powder, cortex phellodendri residue powder, radix isatidis residue powder and eugenol residue powder, a bacterial liquid culture solution is prepared. And inoculating the microbial bacterial liquid into the culture solution, and culturing and fermenting to obtain the traditional Chinese medicine residue fermented product. Straw powder, urea, the fermented traditional Chinese medicine residue, the magnetic composite material, a magnetic loading material and a forming aid are mixed and stirred, granulation and drying are performed after uniform stirring, and the soil remediation agent containing the fermented traditional Chinese medicine residue is obtained. The soil remediation agent prepared by the invention has excellent bacteriostasis and sterilization performance and heavy metal passivation effect, so that the soil remediation agent has a wide application prospect in the technical field of soil remediation.

The present disclosure relates to compositions and related apparatuses that provide effective microbial inhibiting headspace concentrations of allyl isothiocyanate, citral, thymol, linalool, terpineol, eugenol, or a combination of any two or more thereof.

The present application relates to the technical field of separation and purification, and particularly relates to a method for preparing eugenol from syringa oil plants, comprising the following steps: (a) mixing syringa flower buds or leaves with perlite at a mass ratio of 1:1.5-2 to obtain a mixture; (b) adding an antioxidant composite liquid to the mixture, stirring uniformly, and then standing to obtain pretreated material, wherein the antioxidant composite liquid comprises ascorbic acid, citric acid and glycerol; (c) loading the pretreated material into a distillation device, performing gradient heating water vapor distillation, and collecting a condensate; (d) performing low-temperature vacuum concentration on the condensate to obtain crude eugenol; and (e) mixing the crude eugenol with molecular sieves at a mass ratio of 1:3-5, adsorbing and then filtering to obtain refined eugenol. The present application provides an efficient, stable and environmentally-friendly eugenol purification method, by introducing a novel protective agent system and a staged temperature control rectification technology, the occurrence rate of thermal decomposition and oxidation reaction is significantly reduced, and the product purity and production efficiency are improved.

This invention relates to the encapsulation and delivery of active ingredients in traditional Chinese medicine and the preparation of Pickering emulsion. It discloses a method for preparing a Pickering emulsion that effectively improves the bioavailability of eugenol, comprising the following steps: dissolving chitosan in a 1% aqueous acetic acid solution under magnetic stirring to prepare a chitosan CS solution; dissolving sodium alginate in deionized water to prepare a sodium alginate SA solution; slowly adding 4M NaOH solution to adjust the pH of the chitosan solution to 6.8, and then slowly adding sodium alginate solution to obtain a CS-SA mixed solution. All of the above processes are carried out under magnetic stirring; mixing the CS-SA mixed solution with clove essential oil in a certain proportion, stirring to obtain a crude emulsion, and then homogenizing it ultrasonically for a certain time to obtain a Pickering emulsion stabilized by chitosan and sodium alginate particles, with clove essential oil as the oil phase. Compared with the prior art, the main advantage of this invention is that it effectively improves the bioavailability of eugenol, the active ingredient in clove essential oil.

The application discloses a preparation method of a eugenol-based aromatic dibasic acid and application thereof. The preparation method comprises the following steps: heating and refluxing reaction of chloroacetic acid and eugenol in an alkaline solution, acidification to obtain a crude product after the reaction is completed, and obtaining the eugenol-based aromatic dibasic acid after post-treatment of the crude product. The eugenol-based aromatic dibasic acid synthesized by using the widely-sourced eugenol as a raw material is green and environment-friendly, can be used for synthesizing a bio-based polyamide, and has excellent mechanical properties and good dissolving and processing capacity, and the bio-based polyamide has high economy. The whole preparation process is simple in operation and easy to popularize.

A composition for managing, controlling, neutralizing, killing, or repelling an amphibian or reptile comprises at least one active ingredient comprising an effective amount of thymol or a derivative thereof and an effective amount of eugenol or a derivative thereof. The composition is also useful for protecting, guarding, or repelling a pet.

The application relates to the technical field of daily chemicals, and particularly discloses a bacteriostatic and deodorizing fragrance composition as well as a preparation method and application thereof. The bacteriostatic and deodorizing fragrance composition is made of raw materials and comprises the following components: a chemical reaction type deodorizing fragrance base, a sensory modification and receptor blocking fragrance base and a bacteriostatic synergistic fragrance base. The chemical reaction type deodorizing fragrance base is a combination of one or more of citral, citronellal, decanal, damascone, ionone and methyl dihydrojasmonate; the sensory modification and receptor blocking fragrance base is a combination of one or more of menthol and its derivatives, linalyl acetate, dihydromyrcenol and eucalyptol; and the bacteriostatic synergistic fragrance base is a combination of one or more of farnesol, eugenol, thymol, tea tree oil and rosemary extract. The bacteriostatic and deodorizing fragrance composition can keep a better balance and coordination of the sensory modification, chemical deodorization and bacteriostatic components in the fragrance, and thus can exert excellent deodorization and bacteriostatic effects.

The invention provides a plant essential oil synergistic bactericide and application thereof, and belongs to the technical field of bactericides. The plant essential oil synergistic bactericide provided by the invention comprises eugenol and a bactericide, and the bactericide comprises at least one of pyraclostrobin, trifloxystrobin and tebuconazole. According to the plant essential oil synergistic bactericide provided by the invention, the eugenol, the pyraclostrobin, the trifloxystrobin and / or the tebuconazole are compounded for use, so that the plant essential oil synergistic bactericide has a synergistic effect and can be used for remarkably inhibiting the activity of the kidney bean fusarium.

The invention discloses sweet plum essence and a preparation method thereof. The sweet plum essence is prepared from the following components in parts by mass: 0.01 to 0.05 part of eugenol, 0.02 to 0.10 part of alpha damascenone, 0.05 to 0.20 part of beta damascenone, 0.20 to 1.00 part of guaiacol, 0.20 to 1.00 part of myricetin, 0.30 to 1.50 part of ethyl maltol, 5 to 20 parts of dark plum tincture, 5 to 20 parts of jujube tincture and 50 to 90 parts of propylene glycol. The preparation method comprises the following steps: carrying out clarification pretreatment on dark plum tincture and jujube tincture, dissolving ethyl maltol, eugenol, guaiacol, alpha-damascenone and beta-damascenone in propylene glycol at 35-45 DEG C, cooling to not higher than 30 DEG C, adding myricetin, uniformly mixing, adding a clarified tincture, curing for 12-72 hours, and carrying out 0.22-0.45 mu m microfiltration to obtain a finished product. The obtained essence is clear and stable, good in batch consistency, harmonious in sweet plum style level and lasting in aftertaste, and is suitable for aroma enhancement of foods or beverages.

The invention relates to a preparation method of a cigarette phenol extract as well as a product and application of the cigarette phenol extract. The preparation method comprises the following steps: mixing cigarette raw materials with biological enzyme for enzymolysis, adding an extraction solvent into enzyme-deactivated enzymolysis reaction liquid after enzymolysis is completed, performing pulsed ultrasonic extraction, filtering and collecting filtrate, and purifying by macroporous resin to obtain the cigarette phenol extract. And collecting the eluent, and drying to obtain the butyl cigarette phenol extract. According to the method, specific phenolic components in the cigarette are purified by adopting a specific process of'enzymolysis + pulsed ultrasonic extraction + macroporous resin purification ', so that the dissolution efficiency of the phenolic components is greatly improved, residues are reduced, the defect of incomplete extraction of an impregnation method is overcome, and finally the cigarette with outstanding effects and high quality is prepared. The purity of the cigarette phenol extract product is high.

The invention relates to the technical field of genetic breeding of aquatic animals, in particular to a low-loss litopenaeus vannamei growth phenotype determination method. The preparation method comprises the following steps: performing anesthesia treatment on a prawn sample to be measured to enable the prawn to enter an anesthetic state, then transferring the prawn into a normal seawater environment, measuring the growth phenotype of the prawn in a window period, and then recovering the normal state of the prawn. According to the method disclosed by the invention, through short-time eugenol anesthesia, mechanical injury and stress reaction caused by jumping and struggling of the prawns in the phenotype determination process are effectively inhibited, and the loss rate of the prawns is obviously reduced. Compared with the prior art, the method has the advantages of simplicity and convenience in operation, extremely low prawn loss, high growth phenotype determination efficiency and the like, is suitable for growth character evaluation in a large-scale genetic breeding process of prawns, and has a wide application prospect.

This invention belongs to the field of plant protection, specifically relating to the application of eugenol in the control of wheat aphid. The research of this invention demonstrates the repellent, contact-killing, and fumigation effects of eugenol on the agricultural pest wheat aphid. The effects of eugenol on the growth and development of the agricultural pest wheat aphid were assessed using sex life table software, evaluating key parameters of wheat aphid growth and development and population changes at sublethal concentrations. The results showed that eugenol treatment can adversely affect the growth and development of wheat aphids, such as reducing survival and reproductive rates, and decreasing population size. Furthermore, eugenol has a certain synergistic effect with commonly used insecticides. Therefore, this invention has application value in the control of wheat aphids.

A pest control composition includes (i) from about 4 wt% to about 10 wt% of sodium lauryl sulfate; (ii) one or more C5 to C9 hydrotropic salt; (iii) from about 1 wt% to about 10 wt% of one or more active ingredients selected from the group consisting of corn mint oil, peppermint oil, spearmint oil, rosemary oil, thyme oil, citronella oil, clove oil, cedarwood oil, cinnamon oil, geranium oil, eugenol, 2-phenylethyl propionate, menthol, menthone, thymol, carvone, camphor, methyl salicylate, p-cymene, linalool, geraniol, cinnamyl acetate, cinnamic alcohol, cinnamaldehyde, citronellol, eucalyptol / 1,8- cineole, alpha-pinene, bornyl acetate, gamma-terpinene, and combinations thereof; (iv) from 1% to 5% by weight of a solvent, wherein the solvent is a C1-C4 alcohol, and (v) 60 wt% to about 95 wt % of water. The pest control composition exhibits a water peak in a H spectrum having a width encompassing 90% of the area of the entire water signal of about 50 Hz or more, as determined by the H NMR Method. A method of controlling one or more weeds by contacting the said weeds with the pest control composition.

The invention relates to the technical field of tick repelling, in particular to a plant essential oil mixture, a preparation method and application of the plant essential oil mixture in medicine for repelling and killing tephros asiaticum, the plant essential oil mixture comprises core components and functional auxiliaries, the core components comprise cinnamon essential oil, folium eucalypti essential oil and eugenol, and the functional auxiliaries comprise a penetration enhancer and an enzyme inhibitor; the mass ratio of the cinnamon essential oil to the folium eucalypti essential oil to the eugenol is (1-3): (1-2): (2-1); the penetration enhancer accounts for 0.1-0.6% of the total mass of the core component, and the enzyme inhibitor accounts for 0.1-0.3% of the total mass of the core component. According to the plant essential oil mixture as well as the preparation method and the application of the plant essential oil mixture in the medicine for expelling and killing the European eyebrow ticks, the plant essential oil mixture is precisely matched aiming at different development stages of the European eyebrow ticks, the expelling and killing effect is obvious, the lasting period is long, the drug resistance is not easy to generate, and the plant essential oil mixture is environment-friendly and safe.

The application relates to a distiller's grains extract with anti-aging efficacy, a preparation method thereof and a cosmetic. The method comprises the following steps: extracting the fat-soluble components from distiller's grains powder to obtain a first extract and first distiller's grains; extracting the alcohol-soluble components from the first distiller's grains to obtain a second extract and second distiller's grains; and extracting the water-soluble components from the second distiller's grains to obtain a third extract. In the technical scheme, the fat-soluble components in the distiller's grains are extracted first, and then the alcohol extraction and water extraction are sequentially adopted, so that various active substances in the distiller's grains are greatly extracted, the characteristic components of the distiller's grains extract are enriched, and the resource utilization of the distiller's grains is greatly expanded. The distiller's grains extract contains the characteristic components of the distiller's grains extract, such as linoleic acid, oleic acid, maltol, eugenol, alpha-caryophyllene, alpha-terpineol, gamma-aminobutyric acid, goose myo-peptide, plant sphingosine, dihydrosphingosine, lactic acid and glycolic acid, so that the efficacy of the distiller's grains extract is greatly enriched.

A pest control composition includes from about 4 wt % to about 10 wt % of sodium lauryl sulfate; a C5 to C9 hydrotropic salt; from about 1 wt % to about 12 wt % of one or more active ingredients chosen from corn mint oil, peppermint oil, spearmint oil, rosemary oil, thyme oil, citronella oil, clove oil, cedarwood oil, cinnamon oil, geranium oil, eugenol, 2-phenylethyl propionate, menthol, menthone, thymol, carvone, camphor, methyl salicylate, p-cymene, linalool, geraniol, cinnamyl acetate, cinnamic alcohol, cinnamaldehyde, citronellol, eucalyptol / 1,8-cineole, alpha-pinene, bornyl acetate, gamma-terpinene, or combinations thereof; and from about 60 wt % to about 95 wt % of water. The ratio of hydrotropic salt to sodium lauryl sulfate of from about 0.15 to about 0.9. The pest control composition exhibits a receding contact angle of less than 21 degrees.

The utility model provides a kind of environmental protection supervises moxa device, it is related to the technical field of moxa, including bed body, eugenol mechanism;Bed body is equipped with air hole one;Eugenol mechanism includes box, pull-out box one, pull-out box two and multiple fixed components, wherein, box top and one side are set to open mouth, box is fixedly installed in the bottom of bed body;Slidingly installed in box, its top is set to open mouth, bottom is equipped with air hole two, inside is paved with gauze, gauze is used to pave ginger powder;Slidingly installed in box, below pull-out box two, its top is set to open mouth;Multiple fixed components slidingly installed in pull-out box two, for fixed eucalyptus stick;The utility model pull-out box one and pull-out box two slidingly installed in box, by pulling mode, it is convenient to operate;Fixed component slidingly installed in pull-out box two by being set, corresponding jack on fixed component is used for inserting eucalyptus stick, by moving the position of fixed component, eucalyptus stick position can be adjusted, and heat distribution is optimized.

The present application relates to the technical field of breeding, in particular to an indoor breeding of the formula feed of the chemi-smithia brycei and the breeding method of the chemi-smithia brycei, the formula feed is added with the compound essential oil of eugenol, citral and cinnamic acid (mass ratio 0.8:0.5:0.3), the formula feed is low in mouldy rate and zero in formaldehyde residue. The breeding method comprises the following steps: directly feeding the fermented feed to the newly hatched larvae (without the transition of rice stems), feeding the low-density 3rd instar larvae in different pipes (10 larvae per dish), and replacing the feed only once in the whole process. The application of the present application completely eliminates the reproductive toxicity of chemical preservatives and is suitable for large-scale year-round breeding of standard insect sources.