4770 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 full-biodegradable paper diaper breathable bottom film, and relates to the technical field of paper diaper production, and the full-biodegradable paper diaper breathable bottom film comprises the following components by weight: 45-55 parts of polylactic acid, 35-45 parts of a starch-based polymer, 10-12 parts of plant short fiber, 8-10 parts of bamboo fiber, 2-4 parts of a photosensitizer, 5-10 parts of polyvinyl alcohol, and 1-3 parts of lavender essential oil. According to the present invention, the starch-based polymer can enhance the biodegradability and the flexibility, the bamboo fiber can improve the water absorption and the natural antibacterial property, and can accelerate the degradation; the photosensitizer accelerates the degradation speed of the material under illumination, and the biodegradable material is adopted, so that the pollution to the environment is reduced, and the requirement of sustainable development is met.

The invention provides acorus tatarinowii, cinnamon and cinnamon odor-absorbing traditional Chinese medicine compound essential oil for treating or improving depression, and relates to the technical field of traditional Chinese medicine essential oil, the traditional Chinese medicine compound essential oil is prepared from acorus tatarinowii essential oil, cinnamon essential oil, ginger essential oil, radix curcumae essential oil, pericarpium citri reticulatae essential oil and mint essential oil; the traditional Chinese medicine compound essential oil provided by the invention can obviously or obviously improve apparent symptoms of depression model mice; the sweet water preference rate is remarkably or obviously increased, the movement time of the mouse is prolonged, and the activity of the mouse is improved; according to the traditional Chinese medicine compound essential oil disclosed by the invention, the expression level of IL-1beta and TNF-alpha in serum indexes is reduced, the expression level of DA, 5-HT, NE, BDNF, cAMP and P-CREB in brain tissue homogenate is improved, the traditional Chinese medicine compound essential oil has a remarkable improvement effect on depression, and the traditional Chinese medicine compound essential oil is administered in a sniffing manner, so that the anti-depression effect of the traditional Chinese medicine compound essential oil is equivalent to that of oral fluoxetine hydrochloride and is superior to that of oral capsules for soothing liver and relieving depression. The calamus-osmanthus fragrans odor-absorbing traditional Chinese medicine compound essential oil provided by the invention provides a new treatment thought and method for treating or improving depression.

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 relates to the field of hot compress devices, in particular to an essential oil hot compress device for acupuncture assistance, which comprises a hot compress strap and a control device, the hot compress strap comprises an elastic base layer, a plurality of hot compress areas are arranged on the elastic base layer, electric heating belts are arranged in the hot compress areas in a penetrating manner, and the electric heating belts are laid in the plurality of hot compress areas; a plurality of mounting grooves are formed in the hot compress area, liquid separation rows are mounted in the mounting grooves, a plurality of oil applying cloth belts are detachably mounted on the liquid separation rows, the oil applying cloth belts are in hollow strip shapes, a plurality of mounting holes are formed in the liquid separation rows, and one-way spray pipes matched with the mounting holes are mounted on the oil applying cloth belts; a breathable skin-friendly layer is connected between the multiple oil applying cloth belts, and an elastic filling layer wrapping the oil applying cloth belts is arranged between the breathable skin-friendly layer and the elastic base layer. Acupuncture therapy and aromatherapy are combined, essential oil hot compress is carried out on specified acupuncture points corresponding to acupuncture therapy, and essential oil is controllably added in the hot compress process.

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 invention belongs to the technical field of essential oil extraction, and discloses a tea essential oil extraction method which comprises a support, a distillation retort is fixedly mounted in the support through bolts, an air inlet pipe is welded to one end of the distillation retort, a condenser is connected to the top end of the distillation retort through a pipeline, and a collecting tank is mounted at one end of the condenser; a stir-frying mechanism is fixedly mounted in the distillation tank and comprises a screen for placing tea leaves, so that each part of the tea leaves can be uniformly heated in the distillation process, and the phenomenon of local overheating or insufficient heating is avoided, so that the quality and extraction efficiency of essential oil are ensured; compared with standing tea leaves, the stir-fried tea leaves can release more essential oil components in a short time, can promote air circulation, help molecules of the essential oil to be in better contact with steam and increase the volatility of the essential oil, so that the yield and the extraction efficiency of the essential oil are improved.

The invention discloses a separation and extraction system for torreya grandis aril essential oil and an essential oil production line, and the system comprises a squeezing mechanism which comprises a mesh bag for containing torreya grandis aril and a squeezing disc; the distillation mechanism comprises a distillation retort and a steam guide assembly, the distillation retort is connected with a feeding pipe and a steam conveying pipe, the feeding pipe is communicated with the liquid outlet channel, and the steam guide assembly is used for guiding steam introduced into the distillation retort; the condensation mechanism is connected with the distillation retort through a condensation guide pipe, and distilled volatile oil is guided into the condensation mechanism together with steam to be condensed; the oil-water separation mechanism is connected with the condensation mechanism through a separation guide pipe, and the oil-water mixture output by the condensation mechanism is guided into the oil-water separation mechanism for oil-water separation and extraction. The essential oil separation and extraction system and the essential oil production line are suitable for torreya grandis planting fields with limited yield to extract essential oil, and the situation that torreya grandis aril is discarded as waste, and resources are wasted is avoided.

The invention discloses a zanthoxylum bungeanum essential oil Pickering emulsion starch-based active composite membrane and a preparation method thereof. The preparation method specifically comprises the following steps: preparing nano cellulose; preparing a Chinese prickly ash essential oil Pickering emulsion by utilizing the nano cellulose; corn starch, deionized water and glycerin are mixed and stirred, and gelatinized starch liquid is obtained; adding the pepper essential oil Pickering emulsion into the gelatinized starch liquid, stirring, and standing in a vacuum state to remove bubbles, so as to obtain a film forming liquid; and pouring the film forming liquid into a polytetrafluoroethylene mold, and standing to obtain the active composite film. According to the composite membrane disclosed by the invention, due to the introduction of the Pickering emulsion, the transmission path of water molecules in the membrane is increased, and the content of a hydrophobic part in the membrane is increased, so that the barrier effect of the composite membrane is improved.

The invention relates to the technical field of cosmetics, and particularly discloses repairing essence oil and a preparation method thereof. The essence oil comprises a humectant, a conditioning and repairing agent, an emollient, an antioxidant, a preservative, an aromatic and an auxiliary agent. The skin moisturizer, the conditioning and repairing agent, the emollient and other active ingredients in the formula all adopt natural plant extracts as main ingredients, and are supplemented with common, safe, non-toxic and small-irritation auxiliaries, so that the essence oil product with obvious advantages in the aspect of repairing is prepared, and meanwhile, the moisturizing property is good.

1. The name of the product of this design: Aromatherapy bottle (017). 2. Purpose of the product of this design: used for containing essential oils, flavors and spices, etc. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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 essential oil extraction and analysis, in particular to a vitex trifolia leaf essential oil extraction and component analysis and identification method which comprises the following steps: S1, pretreatment of vitex trifolia leaves: flushing the vitex trifolia leaves with clear water for 10-15 minutes, drying moisture on the surfaces of the vitex trifolia leaves, preparing an extraction device, setting the extraction device to be in an initial state, and extracting the vitex trifolia leaves; putting vitex trifolia leaves into an extraction device; s2, squeezing the vitex trifolia leaves: squeezing the vitex trifolia leaves of which the surface moisture is dried by an extraction device for 5-10 minutes to obtain squeezed vitex trifolia leaves and a vitex trifolia leaf oil-water mixture; s3, grinding the vitex trifolia leaves: grinding the squeezed vitex trifolia leaves for 10-15 minutes through an extraction device to obtain ground vitex trifolia leaves and a vitex trifolia leaf oil-water mixture; s4, filtering vitex trifolia leaf essential oil: filtering vitex trifolia leaves and the vitex trifolia leaf oil-water mixture through an extraction device to obtain a vitex trifolia leaf oil-water mixture; s4, extracting vitex trifolia leaf essential oil; the device has comprehensive functions and can effectively improve the extraction efficiency.

The invention relates to the technical field of wormwood essential oil, in particular to a wormwood essential oil extraction method which comprises the following steps: S1, preparing materials, namely preparing fresh wormwood and water, purifying the water by using water treatment equipment, preparing the water into purified water, cleaning the wormwood by using the purified water, removing dust on the surface of the wormwood, and separating leaves and stems of the wormwood; s2, smashing, wherein wormwood leaves and wormwood stems are separated and cut up; s5, separation: disinfecting the wormwood essential oil through high-temperature and high-pressure equipment, then separating volatile oil and water, and then separating the essential oil from other impurities by adopting an extraction method. The method has the advantages that the purity of the wormwood essential oil is improved, and the quality of the wormwood essential oil is facilitated.

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 present application relates to the technical field of deodorant preparation, and specifically to a method for preparing a plant-based bactericidal deodorant based on optimization of preparation parameters, the method comprising: mixing plant extract raw materials, extracting and purifying to obtain a mixed plant extract; washing wintersweet petals, drying and grinding to obtain wintersweet petal powder, adding ethanol solution for heating and reflux, centrifuging, taking the supernatant and chitosan, glacial acetic acid, water, and silver nitrate solution for stirring, and adaptively adjusting the temperature of the solution heated and refluxed after stirring to obtain a bactericidal composite material; mixing clove essential oil, lavender essential oil, and green tea essential oil evenly to obtain a mixed deodorant essential oil; mixing the mixed plant extract, the mixed deodorant essential oil, cyclodextrin, and the bactericidal composite material, and stirring evenly to obtain a plant-based bactericidal deodorant. The present application aims to adaptively adjust the reflux temperature considering the historical heating and reflux conditions to improve the quality of the preparation of the plant-based bactericidal deodorant.

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 photo-thermal and thermal response release antibacterial film as well as a preparation method and application thereof, and belongs to the technical field of functional packaging. The photo-thermal and thermal response release antibacterial film is prepared by compounding a substance with photo-thermal conversion performance and a natural plant essential oil clathrate compound into a film forming base material, so that the combination of contact type sterilization and release type sterilization is realized; according to the antibacterial film, light with specific wavelength can be adopted to irradiate the film in the early storage stage of food, so that the film is rapidly heated, most microorganisms on the food are killed at proper temperature, meanwhile, the speed of diffusion of essential oil from an inclusion compound is increased under the driving of thermal power, and the release rate is greatly increased; therefore, the effect of double sterilization is achieved through release type and contact type synergistic sterilization; the advantages of the two sterilization modes are fully utilized, the problems existing in the two sterilization modes are solved, and the antibacterial efficiency of the film is greatly 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 relates to the technical field of household articles, and discloses a memory foam pillow with a sleep aiding effect, which comprises a body, wherein the interior of the body comprises a layer of bio-based memory foam and a layer of pressure regulating silica gel layer; the bio-based memory foam is prepared by reacting polylactic acid and vegetable oil-based polyurethane under the action of a catalyst tin octanoic acid, wherein the mass ratio of the catalyst is 0.1%; the pressure-regulating silica gel layer is formed by mixing silicone oil and a cross-linking agent according to a volume ratio of 1: 0.05 and then reacting at 60 DEG C for 24 hours; the memory foam pillow further comprises microencapsulated lavender essential oil and a phase change material, wherein the loading amount of the lavender essential oil is 5% of the total mass of the foam. By combining the memory foam and the pressure regulating silica gel layer, the shape and hardness of the pillow can be automatically adjusted according to the sleeping posture of a user, muscle tension and pain are avoided, deeper rest is promoted, the number of times of waking up at night is reduced, and the sleeping quality is remarkably improved.