3388 results about "Essence oil" patented technology

The present invention relates to the technical field of hydrogel preparation. Disclosed is a preparation method for a hydrogel loaded with plant essential oil. Said preparation method is implemented by means of a hydrogel preparation device. The hydrogel preparation device comprises a reaction mechanism; the inside of the reaction mechanism is provided with a drive mechanism; the outer side of the drive mechanism is sequentially provided, from top to bottom, with a blocking mechanism, an inner stirring mechanism and an outer stirring mechanism; and the outer sides of the blocking mechanism and the inner stirring mechanism are jointly provided with a sealing mechanism. The present invention can reduce the time required for inputting deionized water, so as to improve the efficiency of preparing polymer aqueous solutions, and also uses vacuumizing to eliminate bubbles, so as to avoid bubbles without the need for heating mixed liquids, thus reducing the energy consumption while further improving the efficiency of preparing the polymer aqueous solutions.

An atomization mechanism of an aroma diffuser includes an atomization shell and an essential oil bottle. The essential oil bottle is provided with a first cavity, and the atomization shell is provided with a second cavity. When the atomization mechanism is placed normally, pressure exerted by a ball on a spring can compress the spring, making a second communication hole of a leakage-proof cover open. When the atomization mechanism is tilted, pressure exerted by the ball on the spring is not sufficient to compress the spring, and the spring stretches to make the ball abut against at least a portion of the leakage-proof cover, so that the second communication hole of the leakage-proof cover is closed.

The invention discloses a sandalwood SaERF33 protein and / or a SaERF33 gene and application of the sandalwood SaERF33 protein and / or the SaERF33 gene in promoting synthesis of sandalwood essential oil. The amino acid sequence of the sandalwood SaERF33 protein is as shown in SEQ ID NO. 2. According to the invention, the SaERF33 gene is obtained from sandalwood for the first time, the synthesis of sandalwood essential oil can be obviously promoted by overexpressing the SaERF33 gene in sandalwood, and the normal growth of plants is not influenced. The invention provides a new genetic resource for cultivating a new sandalwood variety with high essential oil synthesis efficiency, and has important popularization and application values in the aspects of sandalwood variety cultivation and sandalwood essential oil production.

The invention relates to the field of industrial monitoring scheduling, in particular to an intelligent temperature control method for supercritical extraction of plant essential oil, which comprises the following steps of: clustering historical temperature monitoring time sequence data windows in an extraction kettle in the extraction process of the plant essential oil to obtain a hidden state corresponding to historical temperature monitoring time sequence data; establishing a hidden Markov prediction model according to the hidden state of the historical temperature monitoring time sequence data of the extraction kettle, predicting the real-time temperature monitoring time sequence data of the extraction kettle according to the hidden Markov prediction model, and obtaining a state transition probability matrix of the real-time temperature monitoring data; obtaining a parameter optimization factor of the real-time temperature monitoring data according to the state transition probability matrix of the real-time temperature monitoring data; according to the parameter optimization factor, a PID control model for real-time temperature control of the extraction kettle is obtained, more accurate extraction kettle temperature control model parameters can be obtained, and the precision of the temperature control model in the plant essential oil extraction process is improved.

The invention discloses a dynamic optimization system and method for a compound essential oil ratio, and aims to solve the problems that the traditional technology depends on artificial experience, the optimization efficiency is low and the quality tracing is insufficient. According to the method, raw material molecular fingerprint data are collected in real time through a high-precision spectrum sensor array and a micro-fluidic chip, a production environment field domain is constructed in combination with a computational fluid mechanics model, a formula optimization problem is encoded into an Ising model by using a quantum annealing algorithm, and global search is realized through a quantum tunneling effect. The system integrates digital twin bodies, covers molecular dynamics simulation, phase equilibrium prediction and olfactory receptor activation probability simulation, and accurately maps a physical system state; a multi-modal data fusion network and a reinforcement learning framework are adopted to dynamically adjust formula parameters, and an NSGA-III algorithm is combined to optimize efficacy collaboration degree, cost and stability indexes. And the execution control module realizes nanoscale flow regulation through the piezoelectric micro-injection valve array, and realizes non-tampering evidence storage of formula parameters and quality data based on a block chain technology. Dynamic closed-loop optimization of the compound essential oil ratio is achieved, the production efficiency, the product consistency and the supply chain transparency are remarkably improved, and the method is suitable for the field of intelligent manufacturing of high-end essential oil.

The invention provides a coating preservation material as well as a preparation method and application thereof, and belongs to the technical field of chemical modification of biomass organic polymer materials. The structural formula of the chitosan / polyphenol / quaternary phosphonium salt derivative disclosed by the invention is as shown in # imgabs0 #. The preparation method comprises the following steps: modifying chitosan by using natural phenolic acid and quaternary phosphonium salt to prepare an amphiphilic chitosan derivative; then preparing a plant essential oil microcapsule by taking the amphiphilic chitosan derivative as a wall material and plant essential oil as a core material; and finally, compounding the plant essential oil microcapsules with a film-forming material to construct a film-coating fresh-keeping material, and applying the film-coating fresh-keeping material to fresh keeping of fruits and vegetables.

The invention relates to the field of essential oil slow release, and discloses a mildew-proof tablet containing plant essential oil and a preparation method and application thereof.The mildew-proof tablet containing the plant essential oil comprises two epidermal layers and an essential oil slow-release layer arranged between the two epidermal layers, the preparation method comprises the following steps: grafting sodium abietate and aminated mesoporous silica to prepare functionalized mesoporous silica, loading plant essential oil on the functionalized mesoporous silica to obtain a core material, introducing dihydroxyl polyhedral oligomeric silsesquioxane into a polyurethane main chain, wrapping the core material to prepare an essential oil slow-release agent, taking lignin as a base material, taking the essential oil slow-release agent as an effective component, and preparing the essential oil slow-release agent. And preparing to obtain the essential oil slow-release layer. The prepared essential oil slow-release layer can achieve the effects of essential oil slow release and antibiosis and mildew prevention, the slow-release effect is remarkable under the normal-temperature and high-temperature conditions, the good slow-release effect is still kept in the humid environment, and the efficacy period of the material is greatly prolonged.

The invention relates to the technical field of film material preparation, and discloses a polylactic acid antibacterial packaging film and a preparation method thereof, the polylactic acid antibacterial packaging film comprises the following raw material components by weight: 60-80 parts of polylactic acid, 10-20 parts of polyvinyl alcohol, 10-20 parts of nano zinc oxide, 0.5-1.5 parts of nano cellulose, 1-3 parts of an antibacterial agent, and 10-15 parts of corn starch; the antibacterial agent is prepared from the following components in parts by weight: 5-10 parts of carboxymethylated chitosan and 0.5-2 parts of a dynamic disulfide bond cross-linking agent, the substitution degree of the carboxymethylated chitosan is greater than or equal to 80%, the antibacterial agent is prepared from tea tree essential oil and eugenol, and the dynamic disulfide bond cross-linking agent is bis (3-aminopropyl) disulfide. By adopting a composite system of carboxymethylated chitosan and a dynamic disulfide bond cross-linking agent, the technical effects of humidity-triggered self-repairing and mechanical property synergistic improvement are achieved, and compared with a packaging film with a single polymer base material in the prior art, the problem of antibacterial failure caused by mechanical damage is solved.

Formulations of pesticides are disclosed, specifically pesticidal blends of essential oils and other ingredients, that have been found to enhance the activity of the active pesticidal ingredients. The formulations may be, for example, emulsions or dust formulations. For example, a composition for controlling a target pest is disclosed that comprises at least one active agent and a formulation agent, wherein: the active agent is capable of interacting with a receptor in the target pest; the active agent has a first activity against the target pest when applied without the formulation agent and the composition has a second activity against the target pest; and the second activity is greater than the first activity.

The invention belongs to the field of biological organic fertilizers, and discloses a special organic selenium-rich fertilizer for grapes as well as a preparation method and application thereof. The fertilizer is prepared from the following raw materials in percentage by mass: 0.05-0.2% of a selenium complex, 2-15% of a stabilizer, 15-25% of a microbial fermentation product, 0.5-2.0% of a natural plant extract and the balance of auxiliary materials, totaling 100%. The microbial fermentation product is microbial fermentation liquid obtained by fermenting bacillus tequilensis and cyanobacteria; the auxiliary material is obtained by mixing sodium alginate and maltodextrin; the natural plant extract is obtained by mixing azadirachtin, sophocarpidine, tea tree essential oil and cnidium lactone. Through the synergistic effect of the microbial fermentation product, the natural plant extract and the auxiliary materials, the industrial problem that in the prior art, a selenium fertilizer can only improve the selenium content of grapes, but cannot effectively improve the disease resistance and insect pest resistance of the grapes and slow down selenium element loss is solved, and the double improvement of the grape quality and the selenium content is achieved.

The utility model relates to the technical field of rose essential oil preparation, in particular to a distiller for rose essential oil preparation, which improves the distillation efficiency, can clean the inside, ensures normal use, is convenient to move integrally and is beneficial to wide popularization. Comprising a distillation cylinder, a heating sleeve and a condensation mechanism, the outer wall of the distillation cylinder is sleeved with the heating sleeve, and the input end of the condensation mechanism is connected with the top output end of the distillation cylinder; the bottom end of the distillation cylinder is installed at the top end of the base, the base is installed at the top end of the moving mechanism, the water tank is installed at the left end of the top of the moving mechanism, the water tank is provided with the water adding opening and communicated with the distillation cylinder, and a supporting assembly is installed on the lower portion of the moving mechanism. The stirring mechanism is mounted in the distillation cylinder, a feeding hole is formed in the right end of the top of the distillation cylinder, and the feeding mechanism is mounted at the feeding hole.

The invention belongs to the technical field of biological medicine, and particularly relates to a luliconazole composition containing essential oil, cream and a preparation method and application of the luliconazole composition. The present application provides a composition containing tea tree essential oil that promotes the skin permeability of luliconazole and has an antibacterial function, the tea tree essential oil and luliconazole form a synergistic antifungal effect, the transdermal absorption is enhanced by a natural terpene component, and the irritation to the skin is significantly reduced.

The invention relates to the technical field of plant cultivation, in particular to a phoebe bournei compound management method for cultivating long phoebe bournei with short phoebe bournei, which comprises the following steps: removing all plants on a forest land, and marking a management mode of a planting belt as follows: at least one line of phoebe bournei and one line of melaleuca alternifolia are interplanted, the line spacing of phoebe bournei is 2-3m * 3-7m, and the plant line spacing of melaleuca alternifolia is 1-3m * 1-3m; after phoebe bournei seedlings are subjected to seedling strengthening treatment, the phoebe bournei seedlings and melaleuca alternifolia are subjected to afforestation together, the melaleuca alternifolia are subjected to stubble cutting from January to February of the second year of afforestation and field planting, the stubble height is 10-35 cm, branches and leaves are taken to extract melaleuca alternifolia essential oil, waste generated through extraction and animal waste are mixed according to the ratio of 1: (1-2) for composting, organic fertilizer is obtained, and the organic fertilizer is applied in winter. Compared with the prior art, after the phoebe bournei is subjected to seedling strengthening treatment, the phoebe bournei is interplanted with the melaleuca alternifolia, the plant height, the ground diameter and the maximum crown breadth of the phoebe bournei are increased, and the economic benefit of a man-made forest is increased by means of short cultivation and long cultivation.

The invention discloses a sleep-aiding control method for controlling fragrance emission based on a sleep posture, which is used in a system in which a pressure sensor module, a processor and a fragrance emission module cooperate with each other, and the pressure sensor module and the fragrance emission module are both connected with the processor; the fragrance emitting module at least comprises more than two preset traditional Chinese medicine compound essential oils; the method comprises the following steps: S1, detecting and recording user pressure input data according to a preset time interval through a pressure sensor module; s2, comparing the latest recorded user pressure input data with the previous recorded user pressure input data through a processor to obtain user sleeping posture change information; s3, according to the sleeping posture change information of the user, controlling a fragrance emitting module to change a fragrance emitting mode through a processor, and releasing preset traditional Chinese medicine compound essential oil to help sleep. The invention also discloses a sleep-aiding pillow and a sleep-aiding cushion for the method of the invention.

The invention discloses a plant composition with skin anti-aging activity and a preparation thereof. The plant composition is prepared from the following active ingredients in percentage by weight: 84.0 to 89.0 percent of haematococcus pluvialis extract, 8.0 to 12.0 percent of lithospermum oil, 0.5 to 0.8 percent of melaleuca alternifolia leaf oil, 0.5 to 1.0 percent of hydrolyzed olive leaf extract, 0.1 to 0.5 percent of rhodiola rosea root extract and 1.2 to 2.5 percent of bitter orange leaf oil. The plant composition with the skin anti-aging activity is used as an effective component, other auxiliaries are added, and emulsion, cream or essence oil is prepared. According to the plant composition and the preparation, the fermented camelina seed oil, the fermented safflower seed oil, the fermented meadowfoam seed oil and the like are used as solvents for extracting active components in haematococcus pluvialis and are also used as functional components and matrixes of the preparation, and compared with application of original plant oil, the plant composition and the preparation have better skin feeling and biological activity; the extraction rate of active ingredients in haematococcus pluvialis is higher, and transdermal absorption of the active ingredients is facilitated.

The invention belongs to the field of sweet osmanthus essential oil extraction, and discloses an anti-oxidation continuous extraction device and method for sweet osmanthus essential oil. The extraction device comprises a steam box, a vent hole placement plate and a heating pipe, sliding grooves are symmetrically formed in the steam box, lifting assemblies are arranged in the sliding grooves and comprise sliding plates, and squeezing assemblies used for squeezing the upper surface of the vent hole placement plate are arranged on the upper surfaces of the sliding plates. After extrusion is completed, a hydraulic cylinder is started to enable the telescopic end of the hydraulic cylinder to drive a pressing plate to move upwards till a carding brush makes contact with the surface of an air hole containing plate, a cleaning plate is driven by a moving assembly to transversely move in the direction of a moving groove, and therefore a brush on the upper surface of the cleaning plate is driven to clean sweet osmanthus raw materials attached to the lower surface of the pressing plate; meanwhile, ventilation hole osmanthus fragrans raw materials attached to the surface of the ventilation hole placing plate are dredged and pushed aside through a carding brush to prevent the ventilation holes from being blocked to affect the distillation efficiency, extraction does not need to be interrupted during cleaning, and the extraction efficiency is improved.

The invention discloses a preparation method of ocimum gratissimum carbon dots and application of the ocimum gratissimum carbon dots in antibacterial drugs and food preservation. The preparation method of the ocimum gratissimum carbon dots comprises the following steps: performing steam distillation on ocimum gratissimum leaves to remove essential oil, drying in the shade, and crushing; adding an alcohol solvent into the powder, extracting, filtering, concentrating and drying to obtain an alcohol extract; dispersing the alcohol extract in distilled water, and stirring and pyrolyzing on a heating table; and diluting the pyrolysis product with distilled water, centrifuging, taking supernate, filtering with a filter membrane, dialyzing, and freeze-drying to obtain the carbon dots. The obtained carbon dots have a carbon dot-vesicle coexisting structure, and the average particle size is 5.732 + / -0.5 nm. The prepared ocimum gratissimum carbon dots can be applied to preparation of antibacterial drugs, especially drugs for inhibiting the activity of bacillus cereus and listeria, and the field of food preservation, and have the advantages of being wide in raw material source, simple in preparation method, low in cost, environmentally friendly and the like.

The invention provides an insecticidal pesticide synergistic additive containing plant essential oil and a preparation method thereof, and belongs to the technical field of pesticide synergists. The insecticidal pesticide synergistic aid containing the plant essential oil comprises a synergist matrix, a penetrating agent, an emulsifying agent, a thickening agent, an anti-freezing agent and the plant essential oil. The main component of the synergistic additive is esterified vegetable oil or fatty acid alkyl ester, and the synergistic additive has the advantages of low toxicity, difficult generation of drug resistance of target organisms, environmental friendliness and the like, and can be mixed with a penetrant, an emulsifier and a thickener for use, so that the wetting and infiltration capacity of pesticide liquid can be remarkably enhanced, a wax layer structure can be destroyed, the permeability of the pesticide liquid can be improved, and the pesticide effect can be improved. The added plant essential oil belongs to a natural active substance, has the characteristics of being green and environment-friendly, and can be matched with different pesticide formulations such as insecticides, bactericides, herbicides and the like for use.

The invention belongs to the technical field of hair dyes, and particularly relates to an ammonia-free low-sensitivity essential oil composition for hair dyeing as well as a preparation method and application of the ammonia-free low-sensitivity essential oil composition. The ammonia-free low-sensitivity essential oil composition for hair dyeing is prepared from the following components: coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, simmondsia chinensis seed oil and squalane. The ammonia-free low-sensitivity essential oil composition provided by the invention can simultaneously meet the effects of low irritation, high coloring effect and high dyeing durability.

The invention belongs to the technical field of hair dyes, and particularly relates to a high-grease repairing ammonia-free low-sensitivity essential oil hair dye cream and a preparation method thereof. The ammonia-free low-sensitivity hair dye comprises the following raw materials in percentage by mass: 32-40% of ammonia-free low-sensitivity essential oil, 5-12% of an emulsifier, 5-10% of a thickener, 3-6% of a hair dye, 3-5% of a pH regulator, 1-3% of a humectant, 0.4-0.8% of an antioxidant, 0.1-0.5% of essence, 0.1-0.3% of a chelating agent, 0.05-0.15% of keratin and the balance of water. The ammonia-free low-sensitivity essential oil is a mixture of coconut oil, camellia seed oil, grape seed oil, macadamia nut seed oil, simmondsia chinensis seed oil and squalane. The high-grease repair ammonia-free low-sensitivity essential oil hair dyeing cream provided by the invention can simultaneously meet the effects of lasting color fixation, repair performance and stable storage.

The present invention describes capsule compositions consisting of crosslinked chitosan, beta-glucan or alginate, and encapsulates an environmentally compatible insecticide, especially larvicidal agents such as essential oils or essential oil components or other ingestible larvicides such as Bacillus thuringiensis which are lethal to the larvae and adults of pest insects, especially mosquito larvae.

The invention relates to the technical field of preparation of viscose fibers, in particular to a preparation method of viscose fibers based on wormwood essential oil / paraffin double-layer microcapsules, which comprises the following preparation steps: S1, preparing the wormwood essential oil / paraffin double-layer microcapsules; s2, preparing a microcapsule spinning solution; s3, spinning and forming. According to the invention, the wormwood essential oil is coated in the double-layer microcapsule, so that the natural antibacterial property of the wormwood essential oil is fully exerted. Main active components (such as eucalyptol and flavonoid compounds) of the wormwood essential oil are continuously released through a microcapsule slow release mechanism, and growth of common pathogenic bacteria such as escherichia coli and staphylococcus aureus is remarkably inhibited. Meanwhile, due to the double-layer structure (the polyurethane inner shell and the polyurea outer shell) of the microcapsule, volatilization and oxidation of the wormwood essential oil in the spinning process are effectively avoided, and the long-acting antibacterial effect is ensured.

The invention belongs to the technical field of emulsion preparation, and particularly relates to cinnamon essential oil emulsion as well as a preparation method and application thereof. The cassia bark essential oil emulsion is prepared by jointly emulsifying cassia bark essential oil by utilizing a Chinese honeylocust fruit water extract and soybean protein isolate. The production process is simple, the production cost is low, large-scale production is facilitated, and the prepared cinnamon essential oil emulsion has good storage stability at the temperature of 4 DEG C and also shows excellent electrolyte, pH value, temperature and freeze-thaw stability. The method is suitable for the fields of food, packaging materials, medicines and the like, and the preservation capacity of the prepared cinnamon essential oil emulsion can be comparable with that of a commercial food preservative potassium sorbate.

The present invention provides an anti-fatigue essential oil composition and a preparation method thereof, belonging to the technical field of compound essential oils. The essential oil composition comprises a compound essential oil and a eutectic composition; the compound essential oil comprises 1 to 25 parts of Torreya grandis aril essential oil, 1 to 20 parts of cinnamon leaf essential oil, 1 to 20 parts of lemon essential oil, and 1 to 15 parts of ginger essential oil; the eutectic composition comprises 1 to 3 parts of borneol and 1 to 10.5 parts of menthol. A potassium citrate solution is added to Torreya grandis arils, a sodium acetate solution is added to cinnamon leaves, a potassium citrate solution is added to fresh lemons, and purified water is added to ginger. The juices are squeezed separately and then distilled to obtain Torreya grandis aril essential oil, cinnamon leaf essential oil, lemon essential oil, and ginger essential oil. The present invention combines the four essential oils in a proportioned mixture to produce a compound essential oil, and adds the eutectic composition to produce an essential oil composition. The essential oil composition has significant fatigue-relieving and mentally refreshing effects, and is not easily tolerated.

The invention provides a banana scab control method, and relates to the technical field of banana planting. The prevention and treatment method mainly comprises the following steps: preparing an antibacterial agent from an alocasia macrorrhiza fermentation extract, an okra low-temperature extract, peppermint essential oil, ethanol and the like, and spraying the antibacterial agent to banana plants, wherein the alocasia macrorrhiza fermentation extract is prepared by preparing alocasia macrorrhiza into slurry, mixing the slurry with bacillus subtilis and lactic acid bacteria, fermenting, boiling, sterilizing and carrying out ultrasonic alcohol extraction. The low-temperature okra extract is prepared by mixing fresh okra with ice water, crushing, performing ultrasonic extraction and freeze-drying. According to the invention, the defects in the prior art are overcome, the banana scab is prevented and controlled by taking plant extracted components as main functional substances, the environmental pollution caused by chemical drugs is reduced on the basis of effectively playing a prevention and control effect, and the safety of banana planting is comprehensively improved.

The invention discloses an acne-removing essence and a preparation method thereof, and particularly relates to the technical field of skin care products, the acne-removing essence comprises the following components by mass: 0.5-5% of salicylic acid; 1%-5% of tartaric acid; 2%-6% of nicotinamide; 0.5%-2% of colloidal sulfur; 1.5%-3% of tea tree essential oil; 1%-2% of hyaluronic acid; 0.5%-1% of ceramide; 1%-3% of glycerol; 1%-2% of trehalose; the salicylic acid is used for penetrating into skin, helping to relieve dead skin cells, reducing inflammation and accelerating skin renewal; the tartaric acid is used for realizing a stripping effect, can remove aged cuticles on the surface of the skin and promote the generation of new cells, so that the problem of acnes is helped to be improved. The acne-removing essence prepared by the invention has a relatively good moisturizing effect, so that skin barrier can be well maintained, keratin metabolism is promoted, grease secretion is inhibited, acne is effectively prevented, inflammatory response of the acne is relieved, and the actual use effect of the acne-removing essence is relatively good.

The invention discloses a lasting aromatic lyocell fiber of a biological enzyme immobilized temperature-sensitive microcapsule and a preparation method of the lasting aromatic lyocell fiber, and relates to the technical field of polyester fabrics. The method comprises the steps that firstly, a temperature-sensitive microcapsule of a three-layer structure is prepared, an inner core contains aromatic substances of lavender essential oil, ambrota ether and rosin glycerin ester, a middle layer enables N-isopropylacrylamide monomers to be polymerized to form PNIPAM temperature-sensitive hydrogel, and a shell is a nanocellulose crystal-polydopamine compound; then spinning by taking the NMMO aqueous solution containing the microcapsules as an inner layer solution and taking the NMMO aqueous solution containing the eucalyptus pulp as an outer layer solution by adopting a coaxial micro-fluidic spinning technology; and finally carrying out crosslinking treatment through a biological enzyme coagulating bath, wherein the coagulating bath contains an NMMO aqueous solution, horse radish peroxidase and a hydrogen peroxide solution with gradient concentration. The aromatic lyocell fiber prepared by the invention has excellent temperature-sensitive aroma release performance and washing fastness, and solves the technical problems that microcapsules in traditional aromatic textiles are easy to break and fall off and aromatic substances are easy to volatilize.

The invention discloses a preparation process of a pure plant essential oil disinfectant, and relates to the technical field of disinfectants. The problems that plant essential oil is poor in solubility in a water phase, low in stability and the like are solved. The method specifically comprises the following steps: preparing raw materials; preparing a nano emulsion; preparing a solvent and mixing; constructing a natural stable system to obtain a primary product; filtering and sterilizing; and carrying out sterile filling on the disinfectant finished product. The invention provides a pure plant essential oil disinfectant prepared by dissolving type 1 and 8 melaleuca alternifolia essential oil in water, efficient dispersion is realized through a nano-emulsification and natural stabilization technology so as to form a stable aqueous solution, an amphiphilic structure of soapbark saponin is utilized, aglycone and essential oil terpene form a supramolecular compound, and the stable aqueous solution can be used for sterilizing the melaleuca alternifolia essential oil and the melaleuca alternifolia essential oil and the melaleuca alternifolia essential oil. The technical problems of poor dissolvability and low stability of plant essential oil in a water phase are solved, and the plant essential oil has broad-spectrum antibacterial and antiviral characteristics and can meet the disinfection requirements in multiple fields such as medical treatment, object surface treatment, home furnishing and personal care.

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 relates to the technical field of plant essential oil products, and discloses a refreshing composition based on plant essential oil and a preparation method thereof.The method comprises the steps that an essential oil composition containing menthol, borneol, lime oil, patchouli oil, lavender oil, basil, pelargonium graveolens oil, clove oil and eucalyptus globulus leaf oil is prepared; constructing an ionic gel slow-release base layer; forming a plant source emulsifier composite two-phase system; and adding a light protection and anti-oxidation protection layer. According to the invention, the stability of the essential oil composition in an environment with change of illumination, temperature and humidity is remarkably improved, precise controlled release of essential oil components is realized, and the technical problems that a traditional essential oil product is easy to volatilize and poor in stability and different hydrophilic essential oil components are difficult to effectively load and release at the same time are solved.