1383 results about "Food grade" patented technology

The invention discloses a food-grade high-temperature-resistant coating and a preparation method thereof. The high-temperature-resistant coating is prepared from 60-75% of matrix resin, 18-28% of surface hydrophobic modified nano functional filler and 10-20% of auxiliaries, and the nano functional filler is prepared from 10-15% of nano silicon dioxide, 5-8% of nano aluminum oxide and 3-5% of nano titanium dioxide. According to the food-grade high-temperature-resistant coating and the preparation method thereof, surface hydrophobic modification is carried out on nano particles through a silane coupling agent, the compatibility and dispersion stability of the nano particles in a resin matrix are remarkably improved, coating defects caused by agglomeration at high temperature are avoided, a hydrophobic barrier is formed by the modified nano filler, the moisture permeability is reduced, and the high-temperature-resistant performance of the food-grade high-temperature-resistant coating is improved. And the damp-heat aging resistance of the coating is enhanced.

The utility model discloses an intelligent straw which is characterized in that an induction electrode is coated and attached in the pipe wall of a hollow pipe along the length direction of the hollow pipe to collect the data of the amount of liquid passing through the hollow pipe, the hollow pipe can be made of food-grade materials such as silica gel and food-grade plastics, and the intelligent straw has the function of digitizing drinking water. The system can transmit data to a mobile phone or a cloud end, carries out health analysis through the data, achieves recording reminding, affects healthy diet of young people from behaviors, serves as an intelligent terminal of the Internet of Things, builds a digital connection between a merchant and a user, and further optimizes customer services better.

The invention discloses an edible and medicinal composition for dispelling effects of alcohol and protecting liver as well as a preparation method and application thereof, and belongs to the technical field of functional foods. The composition consists of the following raw materials in parts by weight: 1-8 parts of ampelopsis grossedentata extract freeze-dried powder, 1-8 parts of astragalus membranaceus extract freeze-dried powder, 1-5 parts of kudzu vine root extract freeze-dried powder, 1-8 parts of hawthorn extract freeze-dried powder and 1-5 parts of cassia seed extract freeze-dried powder. The composition is designed according to a multi-component synergistic interaction principle, and the functions of protecting the liver and dispelling the effects of alcohol are enhanced through targeted interaction of active ingredients such as ampelopsis grossedentata flavone, puerarin and astragaloside; the compound preparation has the compound effects of protecting the liver, dispelling the effects of alcohol, resolving dampness, resisting oxidative stress, regulating lipid metabolism and the like, can remarkably relieve the problems of acute and chronic liver injury and metabolic disorder caused by alcohol intake, and meets the food-grade safety standard and the medicinal activity requirement; the important application prospect is realized in the aspect of preparing a preparation for relieving alcoholic liver injury and improving the liver detoxification function.

The invention discloses a stainless steel material for a food-grade straw and a preparation process of the stainless steel material, and relates to the technical field of stainless steel material plating. The silver coating and the antibacterial coating are arranged on the surface of the stainless steel material, and the stainless steel material has good wear resistance and antibacterial performance through the action of the double protective layers. Sulfonated polyphenylene sulfide is added into a silver plating solution, a plating layer is formed after electroplating, the surface of a stainless steel material is not prone to being scratched, the wear resistance of stainless steel is improved, quaternary ammonium salt modified tea polyphenol-nano-silver composite particles are added into the antibacterial coating, and through the synergistic antibacterial effect of quaternary ammonium salt, tea polyphenol and nano-silver, the wear resistance of the stainless steel material is improved. The broad-spectrum antibacterial property is realized, and the efficient antibacterial effect is achieved.

The invention relates to the technical field of flour waterproof packaging bags, in particular to a wear-resistant waterproof packaging bag for flour processing and production. An outer layer material of the packaging bag comprises the following raw materials in parts by mass: 75-85 parts of polyamide, 15-25 parts of a thermoplastic elastomer, 2-5 parts of nano calcium carbonate, 0.2-0.25 part of an antioxidant, 1-3 parts of a nucleating agent and 5-10 parts of a citrate plasticizer; the middle layer material of the packaging bag comprises the following raw materials in parts by mass: 55-65 parts of a polyamide monomer, 35-45 parts of a polyether monomer and 0.5-1.5 parts of a catalyst; the inner layer of the packaging bag is made of 100 parts of food-grade low-density polyethylene. According to the flour packaging bag, by optimizing the material formula and the preparation technology, balance of flexibility and rigidity is achieved, abrasion resistance and water resistance are remarkably enhanced, aging resistance stability is improved, accurate technology guarantee performance is achieved, efficient bonding and antistatic design are achieved, flour quality and transportation safety are guaranteed, and potential risks are reduced.

The invention belongs to the technical field of saccharomyces cerevisiae beta-glucan, and relates to a preparation method of saccharomyces cerevisiae-sourced yeast beta-glucan. The invention relates to a preparation method of saccharomyces cerevisiae-sourced yeast beta-glucan, which comprises the following steps: uniformly mixing a yeast raw material with a first solvent, and carrying out high-pressure homogenization to obtain a homogenized feed liquid; adding food-grade alkali into the homogenized feed liquid to carry out extraction reaction, centrifuging the obtained reaction extracting solution, and separating a heavy phase to obtain a heavy-phase insoluble cell wall extract; and continuously adding a second solvent for resuspension, adding a compound enzyme preparation, adjusting the pH value of the reaction system by using an acidic reagent, carrying out an enzymatic hydrolysis reaction, centrifuging after the reaction is finished, recovering a heavy phase, and drying to obtain the insoluble yeast beta-glucan dry powder. According to the preparation method of the yeast glucan, provided by the invention, the conventional preparation process flow is shortened, the environmental protection treatment pressure is greatly relieved, the production cost is effectively reduced, and the prepared yeast glucan is higher in purity and has a better industrial application prospect.

The present invention provides a betahistine antioxidant tablet and a preparation method thereof, the betahistine antioxidant tablet comprises: a first zone comprising anhydrous citric acid, microcrystalline cellulose and hydroxypropyl methylcellulose; the middle buffer area is a sodium alginate aqueous solution coating; a second zone including calcium carbonate, betahistine, and microcrystalline cellulose; the first zone is located at the top of the tablet, the second zone is located at the bottom, and the buffer zone physically isolates the first zone from the second zone. The first zone, the buffer zone and the second zone are designed to form a sandwich structure, oxidation resistance is realized through dual mechanisms of physical isolation and chemical neutralization, and CO2 generated by reaction of food-grade citric acid and calcium carbonate is used for physically replacing oxygen.

The invention relates to the technical field of pharmaceutical preparations, in particular to a preparation process of carbon dots for killing helicobacter pylori and application of the carbon dots in oral pharmaceutical preparations. The preparation method comprises the following steps: mixing microcrystalline cellulose and glycerol, freezing and crushing at an ultralow temperature, and selectively hydrolyzing by combining citric acid-malic acid mixed acid liquor to efficiently prepare a high-crystallinity cellulose nanocrystal template; the controllable synthesis of the carbon dots is realized by utilizing the hydrogen-bond interaction of hydroxyl / carboxyl on the surface of the cellulose nanocrystal and the nitrogen doping effect in the polymerization and carbonization process of citric acid and urea. Besides, when a sodium alginate-chitosan double-layer structure is constructed, carbon dots are introduced into the inner layer to endow the inner layer with special performance, a protein-polysaccharide network is formed on the outer layer through transglutaminase enzymatic crosslinking, and the oxidation resistance and mechanical strength are enhanced through secondary curing of tea polyphenol. According to the invention, food-grade raw materials are used for realizing high-efficiency antibiosis, the oral preparation safety specification is met, and the clinical transformation potential is realized.

The invention relates to the technical field of production of dipotassium phosphate, discloses a process method for continuously producing food-grade anhydrous dipotassium phosphate, aims to obtain a food-grade anhydrous dipotassium phosphate product through a drying reaction in a rotary polymerization furnace by a one-step method, and effectively solves the problems of multiple control procedures, complicated process control and high production cost. The coke content is greatly reduced under the condition of ensuring the dipotassium phosphate content.

The invention relates to the technical field of PET (polyethylene terephthalate) bottle preparation, and discloses an anti-light-transmission PET bottle preparation method based on a two-way stretching process, raw material pretreatment: compounding a food-grade PETG (polyethylene terephthalate glycol) resin base material, a titanium dioxide or carbon black opacifying agent and auxiliaries containing a dispersing agent and the like, premixing for 5-10 minutes in a high-speed mixer at the speed of 800-1200 rpm, and carrying out vacuum drying for 4 hours at the temperature of 120 DEG C to obtain a premix with the water content of less than or equal to 30 ppm; melting and injection molding: plasticizing the premix through a twin-screw extruder, and carrying out injection molding to obtain a tubular preform with the wall thickness of 2-3mm; and cooling and heating: cooling the preformed blank in a water bath at 25 DEG C, and heating the surface layer to 90-00 DEG C and the core to 60-70 DEG C by using an infrared heating furnace. Stretching and blow molding are conducted, axial stretching is conducted at 50-80 mm / s, radial high-pressure air blow molding is conducted at 2.5-3.5 MPa, the temperature of a mold is 80-100 DEG C, and pressure maintaining is conducted for 5-8 seconds. And post-treatment: cooling in three sections, cutting off excess materials, and carrying out UV treatment to improve weather resistance. By optimizing dispersion of the opacifying agent and selecting a proper opacifying agent, light is effectively blocked, and the light transmittance is controlled at an extremely low level.

The invention provides sustained-release granules containing gamma-aminobutyric acid as well as a preparation method and application of the sustained-release granules, and relates to the technical field of sustained release. The invention discloses a GABA sustained-release particle prepared by compounding glyceride and vegetable wax with gamma-aminobutyric acid for the first time, particularly provides a structure of the GABA sustained-release particle, and provides a preparation method of the GABA sustained-release particle by taking glyceride, vegetable wax and gamma-aminobutyric acid as a core material and taking glyceride and vegetable wax as a coating to wrap the core material. The GABA sustained-release granules are simple in components and production process, and large-scale industrial production can be realized. Use of hazardous chemicals and chemical reactions are not involved, and no pollution is caused to the environment; the product has small particle size, can meet the use requirements of various medicines, health care products, foods or cosmetics, and has guiding significance for development of GABA food-grade sustained-release products and other sustained-release products.

The invention discloses a cryoprotectant which comprises glycerol, skimmed milk powder, mannitol, trehalose, vitamin C, fructo-oligosaccharide, inulin and sterile water. By optimizing the components of the cryoprotectant, the activity of the coprophilous fungi can be effectively protected, the survival rate of the intestinal coprophilous fungi in the freezing process is remarkably increased, all the used components are food-grade edible components and have a wide application range and economic effects, the invention further discloses a coprophilous fungi freezing preservation method adopting the cryoprotectant, and the cryoprotectant has good application prospects. The method is simple, easy to operate and suitable for large-scale production and application.

The invention discloses a biodegradable flexible conductive high-hydrophobicity sensor substrate and a preparation method and application thereof.The preparation method comprises the steps that a polylactic acid electrostatic spinning solution and a chitosan / polyethylene oxide mixed electrostatic spinning solution are prepared on the basis of a safe and non-toxic food-grade material; the preparation method comprises the following steps: sequentially spinning by adopting an electrostatic spinning technology to form a sandwich structure flexible substrate, transferring a carbon nano tube conductive film, and tightly attaching the carbon nano tube conductive film to the surface of a polylactic acid layer of the sandwich structure substrate, thereby finally obtaining the flexible conductive high-hydrophobicity composite substrate. According to the invention, a hydrophobic-hydrophilic-hydrophobic sandwich structure is constructed through multi-layer electrostatic spinning, and a surface carbon nanotube conductive layer is cooperated, so that the substrate has high hydrophobicity, excellent conductivity and flexible tensile property. The preparation method has the characteristics of controllable process, low cost and environmental friendliness, and the obtained substrate is expected to have wide application prospects in the fields of food packaging, sensor substrates, intelligent wearing, health monitoring and the like.

Improvements in batter coating machines for automatic food process lines include improvements at least in connection with (1) a variable height adjustment system for the submerging conveyor, (2) a batter mixing tank for mixing fresh batter, (3) a viscosity management system, (4) a batter pool leveling system, a (5) a dual batter pump and three-way valve system for pumping fresh batter or for recirculation, (6) a ‘waste’ conveyor for removing ‘waste’ material (albeit still food grade) from the main batter pool, (7) an auxiliary accurate feed machine of dry ingredients and wet ingredients (presumably water, but other things like milk or egg whites and so on are not excluded), and the like.

The invention is applicable to the technical field of toothpaste preparation, and particularly relates to mild stain-removing and whitening toothpaste containing diatomite and coconut shell carbon and a preparation method of the mild stain-removing and whitening toothpaste. The mild stain-removing and whitening toothpaste comprises 9-30% of Changbai Mountain diatomite abrasive, 32-38% of sorbitol, 2-4% of sodium lauroyl silicate, 2-3% of polyethylene glycol 400 and 0.5-2% of coconut shell carbon. The toothpaste is prepared from the following components in percentage by weight: 0.6 to 1 percent of polyvinylpyrrolidone, 0.5 to 0.8 percent of honeysuckle flower extract, 0.5 to 0.7 percent of pseudo-ginseng extract, 0.5 to 0.8 percent of xanthan gum, 0.1 to 0.2 percent of 1, 2-hexanediol, 0.5 to 0.8 percent of essence and water. The diatomite and coconut shell carbon used in the invention are refined natural food-grade raw materials, do not contain chemical components, have low hardness, are suitable for children and sensitive people, and do not damage enamel; the selected Changbai Mountain diatomite and coconut shell carbon with the iodine value of 1500-3000 have a synergistic effect, and the Chinese herbal medicine extract is added to assist in degerming; the adsorption, whitening and deodorizing capabilities of the toothpaste are greatly improved, and the toothpaste can quickly remove stains, whiten and remove bad breath.

The invention provides application of beta-1, 3 / alpha-1, 3-glucan in preparation of functional food with a sleep improving effect, and belongs to the field of health-care food. The food-grade beta-1, 3 / alpha-1, 3-glucan aims to assist in solving the problems that in the prior art, a sleep improvement scheme is limited in effect, prone to dependence, obvious in discomfort after use and large in effect individual difference, is used for improving sleep-related symptoms, is high in safety and wide in applicability, and can cover people with different sleep troubles.

The invention discloses a natural clinoptilolite processing method for food and medicine industries. According to the method disclosed by the invention, heavy metals and radioactive impurities in zeolite pore channels can be accurately and directionally desorbed through a super-medium freezing and microwave-infrared coupling technology, and the purity of a final product is ensured to reach a food-grade standard. The supercritical CO2 gradient extraction further strengthens the capability of removing residual pollutants and effectively eliminates harmful substances such as organochlorine pesticides, so that the zeolite micro-powder meets the high cleanliness requirement of a medical carrier material, the natural microporous structure of zeolite is protected, deep decontamination is realized, a safe and reliable base material is provided for subsequent application, and the application range of the zeolite micro-powder is widened. Through low-temperature environment and supersonic airflow crushing, the agglomeration phenomenon of particles caused by mechanical friction is avoided, and meanwhile, the dispersion stability of the powder is enhanced through application of the surface modifier. The modular design of the integrated device is matched with an intelligent dynamic regulation and control system, and efficient connection and energy consumption optimization of the technological process are achieved.

The invention particularly relates to hierarchical porous conductive gel, a preparation method thereof and a friction nano-generator. Aiming at the defects of mechanical property and electric conductivity of the existing conductive gel material, the invention provides the conductive gel with a multi-stage pore structure, food-grade raw materials are adopted, and the multi-stage pore structure is realized through a freeze-drying method and an interactive embedding mode of gel with different densities; the moist environment of an internal ion solution can be kept for a long time, and good stability and flexibility are achieved. The invention also provides a friction nano-generator using the gel material as a conductive medium, and the friction nano-generator has good electrical properties and good application prospects when applied to wearable electronic equipment.

To provide a food quality preservative enabling further reduction of acetaldehyde concentration in a food packaging body.SOLUTION: A food quality preservative is used, the preservative comprising at least an ethanol vapor-releasing body, an oxygen absorber, and an aminooxyalkyl group-containing polysiloxane having a structural unit represented by the following general formula (1). [In the formula, R independently represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a hydroxyl group. The alkyl group may have an amino group (-NH2) at any position. Q independently represents a divalent organic group having 1 to 20 carbon atoms. n represents a real number of 0 to 100].SELECTED DRAWING: None

The invention discloses a smokeless electronic cigarette liquid capable of inhibiting generation of visible aerosol and a preparation method thereof, the smokeless electronic cigarette liquid is composed of a matrix component and an essence component, the matrix component comprises food-grade propylene glycol, absolute ethyl alcohol and purified water, and the essence component comprises essence, nicotine salt, a cooling agent, food-grade propylene glycol and a sweetening agent. According to the smokeless electronic cigarette liquid, by canceling traditional atomized matrix glycerol, the electronic cigarette liquid hardly generates aerosol in the heating and using process, namely hardly generates obvious smoke which is lower than an alarm threshold value of a smoke alarm, does not trigger the smoke alarm, avoids environmental residues, and is safe and reliable. According to the present invention, the use requirements of users in public places or no-smoking areas can be met, the trouble to surrounding people is effectively avoided, the harm to the human respiratory system is reduced, the environmental protection and health are provided, the transmission efficiency and the taste of nicotine are retained, and the preparation method has characteristics of simple processing, simple process requirement and low cost, and is suitable for large-scale production.

The invention belongs to the technical field of aquatic product preservation, and particularly relates to a protein-based intelligent gel label with aquatic product freshness indication and mechanical properties as well as a preparation method and application of the protein-based intelligent gel label. The preparation method comprises the following steps: mixing an ovalbumin solution with a chitosan-anthocyanin compound solution, and incubating under the action of a Ca < 2 + > ion slow release system of calcium sulfate. The intelligent gel label for indicating the freshness of the aquatic products is applied to monitoring of the freshness of the shrimps, the color of the intelligent gel label changes along with the decay degree of the shrimps, the intelligent gel label correspondingly shows different color changes under different trimethylamine concentrations, TVC values, pH values and TVB-N values, and the intelligent gel label has the advantages of being high in sensitivity, good in mechanical performance and high in stability; the food-grade safe and reliable visual monitoring of the freshness of the aquatic products is realized.

The invention discloses food-grade metal surface blackening liquid as well as a blackening process and application. The blackening liquid comprises a basic blackening component and a modified graphene solution, wherein the basic blackening liquid comprises 15-25 g / L of sodium pyrophosphate, 8-12 g / L of sodium molybdate, 20-30 g / L of sodium gluconate, 2-5 g / L of sodium erythorbate, a citric acid / sodium citrate buffer solution, 10-15 ml / L of polyethylene glycol and 0.5-1 ml / L of polysorbate 80; the modified graphene is PEI modified graphene oxide. According to the method, stubborn dirt is cleaned and peeled off through ultrasonic waves, and grease is degraded through photocatalysis of nano TiO2, so that the surface hydrophilicity is improved, and the adsorption uniformity of blackening liquid is enhanced; according to the method, Si-O-Si network crosslinking is optimized through staged heating (80 DEG C to 120 DEG C to 140 DEG C), the hardness and the adhesive force are improved, thermal stress concentration in a traditional process is avoided, meanwhile, raw material decomposition can be avoided at the temperature, and the safety of blackening liquid is further guaranteed.

The invention relates to the technical field of pet cat litter, in particular to edible bean dreg cat litter. In particular to edible bean dreg cat litter. The cat litter is prepared from the following raw materials in parts by weight: 600 to 650 parts of bean dregs with the water content of 10 to 12 percent, 300 to 320 parts of corn starch, 18 to 22 parts of guar gum, 8 to 12 parts of vital gluten, 30 to 35 parts of food-grade calcium carbonate, 1 to 2 parts of nisin, 1 to 2 parts of skim milk powder, 0.8 to 1.2 parts of vitamin E, 0.4 to 0.6 part of lactobacillus acidophilus, 0.4 to 0.6 part of saccharomyces cerevisiae, 0.4 to 0.6 part of bacillus amyloliquefaciens and 0.4 to 0.6 part of rhizopus. The cat litter further comprises 1-2 parts of a natural PH indicator. The cat litter aims at solving the problem that kittens or heterotriophagia cats eat the cat litter by mistake, so that intestinal diseases are caused.

The utility model discloses a combined paper lunch box in the field of lunch boxes, which comprises an outer hard box body and an inner partition box body arranged in the outer hard box body, and the middle of the inner partition box body is provided with a middle grating for dividing the inner partition box body into a plurality of partition cavities. According to the utility model, the lunch box is arranged into two layers, and the inner layer is provided with the partition cavity and the outer layer is not provided with the partition cavity to form a new lunch box, so that the lunch box not only has a heat insulation effect, but also is more environment-friendly compared with an existing lunch box processed by paper pulp or made of a molding material; the first sealing glue layer and the second sealing glue layer which are made of food-grade hot sealing glue or cold sealing glue are arranged, it can be guaranteed that the first sealing glue layer and the second sealing glue layer can be rapidly pasted together, press-fit combination operation is facilitated, and efficiency is improved.

The invention discloses a coarse cereal food processing method based on biological enzyme-physical field coupling, and belongs to the technical field of coarse cereal food processing and utilization. The preparation method comprises the following steps: firstly, mixing pure coarse cereal powder with a compound modified material, and premixing to obtain a premix; adding deionized water, a compound flavourzyme solution and carboxymethyl chitosan into the premix for enzymolysis, performing ultrasonic and pulsed electric field cooperative treatment after enzymolysis is finished, performing vacuum concentration after treatment, adding trehalose and modified diatomite, and uniformly mixing to obtain a coupling modified material; then kneading dough, adding food-grade glycerol during dough kneading, rolling, and cutting into strips to obtain noodle blanks; and finally, carrying out gradient drying on the noodle blanks, introducing nitrogen in the drying process, and obtaining the brewing instant coarse cereal noodles after the drying is finished. The method effectively solves the problems of non-uniform rehydration, unstable forming, high storage embrittlement rate, turbid soup and the like of the brewing instant coarse cereal noodles, and meets the industrial production requirements of the brewing instant coarse cereal noodles.

The invention relates to the technical field of laser cutting, in particular to a laser pipe cutting machine for food-grade circular pipes, which comprises a table body, a cleaning assembly is fixedly mounted on the upper surface of the table body through a supporting rod, and the cleaning assembly comprises a conical cover, a scraping ring fixedly mounted at the rear end of the conical cover and a mounting ring fixedly mounted at the front end of the conical cover; the scraping ring is fixedly connected with the supporting rod, an annular cavity is formed in the mounting ring, a plurality of water passing pipes communicating with the annular cavity are fixedly mounted on the inner ring wall of the mounting ring in a circumferential shape, and nozzles are fixedly mounted at the ends of the water passing pipes; and a laser cutting mechanism is arranged on the surface of the table body. According to the equipment, the cleaning assembly on the table body is cooperatively matched with the laser cutting mechanism, when the round pipe to be machined is driven by the driving assembly to move, impurities are washed away through high-pressure cleaning water of the water passing pipe in the mounting ring and the spray head, then impurities and water stains on the outer wall are physically scraped through the scraping ring, and finally cutting is completed through the rear laser cutting mechanism.

The utility model discloses an automatic feeding device in food-grade calcium carbonate production, which comprises a storage box shell and a movable support which is arranged at the bottom end of the storage box shell and is used for the movement of the storage box shell, the bottom end of the storage box shell is provided with a discharge port, and the bottom end of the movable support is connected with a movable plate through a driving mechanism. The top end of the movable plate is connected with a closing plate through a telescopic mechanism, and a sealing layer corresponding to the discharging opening is fixed to the top end of the closing plate. According to the automatic feeding device in food-grade calcium carbonate production, the telescopic mechanism, the driving mechanism, the closing plate and the sealing layer are combined for use, the telescopic mechanism can enable the closing plate and the sealing layer to stably correspond upwards and close the discharging opening, the driving mechanism can automatically drive the sealing layer to correspond to the discharging opening, the discharging path of the device is saved, and the production efficiency is improved. And therefore, the problem of raw material waste is avoided, and the discharging efficiency of the device is improved.

The invention relates to the technical field of functional nutritious food, in particular to multi-layer skin nutrition powder with a whole-spectrum skin growth and repair promoting effect and a preparation method and application thereof, the core of the multi-layer skin nutrition powder is composed of a collagen peptide system (60-62%), a proteoglycan system (20-22%) and the like, collagen peptide is compounded with three sources of cattle, fish and chicken, and the multi-layer skin nutrition powder has the advantages that the multi-layer skin nutrition powder is prepared; according to the present invention, with the combination of the following components, the skin structure and activity are jointly promoted by using the synergistic effect of the functional polypeptide compound (2.5-3.5%) and the plant active component (3.5-4.5%) rich in asiaticoside and procyanidine, and the nutrition enhancers (4-5%) such as L-ascorbic acid and amino acid chelated zinc and the food-grade auxiliary materials (8-10%) such as microcrystalline cellulose are integrated in the formula, such that the various systems achieve the synergistic effect so as to achieve the effect of nourishing the skin; through the synergistic compatibility of the three-source collagen peptide, the comprehensive supplement of various types of collagen in skin tissues is realized.

The invention relates to the technical field of colloid and interface chemistry, in particular to an oil-in-water-in-oil double emulsion, a one-step preparation method of the oil-in-water-in-oil double emulsion and application of the oil-in-water-in-oil double emulsion. A water phase and an oil phase are sheared and stirred at a high speed of 6000-12000 r / min through a one-step process to form an emulsion with a droplet diameter of 1-100 [mu] m. According to the invention, the tedious process of respectively stabilizing the inner and outer oil-water interfaces of the double emulsion through two emulsifiers with different hydrophilic and oleophylic properties in a traditional two-step method is effectively improved, and the O / W / O double emulsion is directly obtained through a one-step process, so that the purpose of simultaneously stabilizing the inner and outer emulsion interfaces of the double emulsion through a single emulsifier is achieved; the method has a huge potential application prospect in the fields of food packaging, drug sustained release and the like.

The invention discloses a hawthorn, hippophae rhamnoides fruit and red date compound beverage with an anti-caries function and a preparation method thereof, and relates to the technical field of compound beverages. The preparation method comprises the following steps: crushing dried hawthorn for later use without specific particle size limitation so as to meet the contact requirement of subsequent extraction), sea-buckthorn primary pulp (without additional pretreatment requirement so as to ensure no spoilage) and red date primary pulp (with the quality requirement of the sea-buckthorn primary pulp); the specifications of the auxiliary materials and the solvent are as follows: stevioside (food grade, the purity meets the industrial standard), erythritol (food grade, white crystalline), distilled water (meeting the standard of pure water for food processing) and absolute ethyl alcohol (analytically pure and used for polysaccharide alcohol precipitation); according to the process, ultrasonic-assisted heat extraction, alcohol precipitation and freeze drying are taken as a core process, and the polysaccharide extraction rate of more than or equal to 15.5% is realized by optimizing extraction parameters.