CN115025021A - Whitening emulsion containing natural plant extracts - Google Patents

Whitening emulsion containing natural plant extracts Download PDF

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Publication number
CN115025021A
CN115025021A CN202210786491.1A CN202210786491A CN115025021A CN 115025021 A CN115025021 A CN 115025021A CN 202210786491 A CN202210786491 A CN 202210786491A CN 115025021 A CN115025021 A CN 115025021A
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extract
whitening
parts
emulsion containing
natural plant
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CN115025021B (en
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朱永闯
郑丹阳
龚盛昭
岑水斌
梁冰
陈杰生
黄兰
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Guangzhou Fanzhirong Cosmetics Co ltd
Guangzhou Qingnong Biotechnology Co ltd
Zhiyueyun Guangzhou Digital Information Technology Co ltd
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Guangdong Industry Technical College
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/97Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
    • A61K8/9783Angiosperms [Magnoliophyta]
    • A61K8/9789Magnoliopsida [dicotyledons]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36Carboxylic acids; Salts or anhydrides thereof
    • A61K8/368Carboxylic acids; Salts or anhydrides thereof with carboxyl groups directly bound to carbon atoms of aromatic rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37Esters of carboxylic acids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/41Amines
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/64Proteins; Peptides; Derivatives or degradation products thereof
    • A61K8/66Enzymes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73Polysaccharides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/97Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
    • A61K8/9728Fungi, e.g. yeasts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/02Preparations for care of the skin for chemically bleaching or whitening the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/08Anti-ageing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59Mixtures
    • A61K2800/592Mixtures of compounds complementing their respective functions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59Mixtures
    • A61K2800/592Mixtures of compounds complementing their respective functions
    • A61K2800/5922At least two compounds being classified in the same subclass of A61K8/18
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/74Biological properties of particular ingredients
    • A61K2800/78Enzyme modulators, e.g. Enzyme agonists
    • A61K2800/782Enzyme inhibitors; Enzyme antagonists
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Abstract

The invention discloses a whitening emulsion containing natural plant extracts, which consists of the following components: ginseng extract, hibiscus syriacus leaf extract, salicornia bigelovii seed extract, agaric extract, whitening agent, glycerin, humectant and water; the whitening agent is prepared by carrying out a series of reactions on p-hydroxy cinnamic acid and vinyl acetate. Compared with the prior art, the whitening emulsion containing the natural plant extract can effectively penetrate into the horny layer to inhibit tyrosinase activity, reduce the occurrence of anaphylactic reaction, obviously reduce the generation of melanin, improve the whitening effect, reduce the reduction amount of elastase, increase the skin elasticity, improve the anti-wrinkle level and improve the skin state.

Description

Whitening emulsion containing natural plant extracts
Technical Field
The invention relates to the technical field of cosmetics, and particularly relates to a whitening emulsion containing natural plant extracts.
Background
The processing of fine chemicals such as medicines, health products, cosmetics, etc. is rapidly expanding on an industrial level. Tyrosinase is a copper-containing enzyme and plays a key role in the production of melanin, the tyrosinase catalyzes tyrosine into L-3, 4-dihydroxyphenylalanine through hydroxylation and then is oxidized into dopaquinone to produce melanin, the melanin can protect human skin from excessive solar ultraviolet irradiation, and the melanin is a main substance for blackening the skin. Tyrosinase inhibitors of the prior art are currently used for treating epidermal pigmentation, however, the potential adverse effects and low stability of tyrosinase inhibitors remain a serious problem. Moreover, the usual chemical processes for preparing these cosmetics generally require harsh reaction environments and generate large amounts of waste.
The invention patent CN107648131A discloses a whitening skin care product containing natural plant extracts, which consists of a whitening effect component, a matrix component and deionized water, wherein the whitening effect component consists of the following raw materials in parts by weight: 3-10 parts of normal hexane extract of narcissus flower petals, 3-10 parts of chloroform extract of astragalus, 3-10 parts of chloroform extract of salvia miltiorrhiza leaves and 3-10 parts of chloroform extract of medlar. The skin care product has remarkable whitening effect, and has obvious synergistic effect on the aspect of inhibiting the activity of tyrosinase by combining the normal hexane extract of narcissus petals, the chloroform extract of astragalus, the chloroform extract of salvia miltiorrhiza leaves and the chloroform extract of medlar according to a specific proportion, thereby achieving the unexpected whitening effect. The skin care product completely meets indexes in technical specifications for cosmetic safety (2015 edition) issued by the nation, has no irritation to skin, and is safe and reliable. However, the functional substance of the invention adopts plant extract, has the defects of poor stability and low whitening effect, and has the problem of low skin absorption effect.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an emulsion with reduced allergy, natural ingredients, whitening and anti-wrinkle effects.
The plants are good natural sources, have the characteristics of low toxicity and large stock, the functional components of the plants of ginseng, hibiscus syriacus leaves, salicornia bigelovii and agaric are extracted, p-hydroxycinnamic acid and vinyl acetate are added into tetrahydrofuran to react in a packed bed reactor, and the mixture is obtained through reduced pressure evaporation and column chromatography; and then adding the mixture, N-dimethylbenzylamine, agarose, glucose oxidase and gellan gum into toluene, stirring for reaction, dialyzing, and evaporating the solvent to obtain the whitening agent, which can remarkably reduce the generation of melanin, improve the whitening effect, reduce the reduction amount of elastase, increase the skin elasticity and improve the anti-wrinkle level.
In order to achieve the purpose, the invention provides a whitening emulsion containing natural plant extracts, which adopts the following technical scheme:
a whitening emulsion containing natural plant extracts comprises the following components: ginseng extract, hibiscus syriacus leaf extract, salicornia bigelovii seed extract, agaric extract, whitening agent, glycerin, humectant and water.
Preferably, the whitening emulsion containing the natural plant extracts is prepared from the following components in parts by weight: 2-5 parts of black ginseng extract, 4-6 parts of hibiscus syriacus leaf extract, 1-3 parts of salicornia bigelovii extract, 5-8 parts of agaric extract, 5-8 parts of whitening agent, 5-15 parts of glycerin, 6-10 parts of humectant and 60-150 parts of water.
The invention also discloses a preparation method of the whitening emulsion containing the natural plant extract, which comprises the following specific preparation steps:
step 1, mixing water and a ginseng extract, a hibiscus syriacus leaf extract, a salicornia bigelovii extract and an agaric extract, and heating to 70-80 ℃ to obtain a mixed extract;
and 2, cooling the mixed extract prepared in the step 1 to 30-40 ℃, adding a whitening agent, glycerol and a humectant, mixing, homogenizing, and cooling to room temperature to obtain the whitening emulsion containing the natural plant extract.
Preferably, the ginseng extract is prepared by the following method: steaming and boiling the dried ginseng at 90-100 ℃ for 2-5 h, drying at 40-60 ℃ for 20-40 h, and repeating the operation for 5-10 times; and then adding the dried ginseng into 70-85 wt% methanol water solution, adjusting the temperature to 70-90 ℃, grinding for 2-4 h, then evaporating the methanol, recovering the solvent, and freeze-drying to prepare the ginseng extract.
Preferably, the hibiscus cannabinus leaf extract is prepared by the following method: washing the hibiscus cannabinus leaves with water, drying, and then storing overnight at-70 to-90 ℃; and then vacuum drying for 40-60 h, wherein the vacuum degree is 0.0001-0.01 MPa, grinding, and mixing the hibiscus syriacus leaf powder: hexane is 1: 3-6, extracting at 50-70 ℃ for 2-5 h, evaporating to remove hexane, flushing with nitrogen, and freezing for storage to obtain the hibiscus cannabinus leaf extract.
Preferably, the salicornia extract is prepared by the following method: washing Salicornia herbacea with water, and freeze drying; grinding into powder, and mixing the powder with water according to a mass ratio of 1: 20-40, heating at 90-100 ℃ for 0.5-2 h, cooling at room temperature, centrifuging at 8000-12000 rpm for 10-20 min, separating supernatant, and freeze-drying to obtain the salicornia extract.
Preferably, the agaric extract is prepared by the following method: the agaric is washed by water, then dried in the shade at the temperature of 20-35 ℃ for 4-8 days, ground into powder, extracted by 60-80 wt% of ethanol water solution, and the extracting solution is evaporated and dried to obtain the agaric extract.
Preferably, the humectant is a mixture of 1: 1.8-2.5: 0.3-0.8 of glyceryl monostearate, butanediol and triethanolamine.
The p-hydroxycinnamic acid is a potential natural cosmetic, has the capacity of inhibiting melanin generation, has low cytotoxicity and can be well applied to whitening agents. The invention has better biological catalysis efficiency on reactants by carrying out enzymatic reaction in toluene, reduces the influence on the environment and the discharge of wastes in the whole reaction process, and the prepared whitening agent can reduce anaphylactic reaction and has whitening and anti-wrinkle effects.
The preparation steps of the whitening agent are as follows, and the parts are all parts by weight:
s1, dissolving 0.05-0.2 part of p-hydroxy cinnamic acid and 1-2 parts of vinyl acetate in 5-20 parts of tetrahydrofuran, and adding 0.1-0.5 part of 5-15 wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 20-50 min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 5-20 min; evaporating under reduced pressure, and performing column chromatography on a stationary phase to obtain a mixture;
s2, adding 0.1-0.5 part of N, N-dimethylbenzylamine, 0.01-0.2 part of agarose, 0.01-0.05 part of glucose oxidase and 0.2-1 part of gellan gum into 1-5 parts of toluene, adding the mixture prepared in the step S1, dripping 0.4-1 part of 2-8 wt% sodium hydroxide aqueous solution at a dripping speed of 0.05-0.2 mL/min, stirring and reacting at 20-30 ℃ for 20-40 min, then adding 20-35 wt% hydrochloric acid to adjust the pH value to be neutral, dialyzing and evaporating the solvent to obtain the whitening agent.
Preferably, the stationary phase of the step S1 column chromatography is n-hexane: the mass ratio of ethyl acetate is 7-10: 1 is configured.
In order to improve the stability to hydroxycinnamic acid, the present inventors have conducted intensive immobilization studies and have selected acetaldehyde-agarose as the best immobilizing agent, which we immobilized on acetaldehyde-agarose. The fixing agent not only can obtain higher catalytic efficiency under the condition of low biological catalyst load, but also can be easily mixed with the catalyst in a packed bed reactor, thereby ensuring controllable fluid dynamics and reaction time. Vinyl acetate is a more efficient acyl donor than other ethyl esters in a packed bed reactor mediated catalytic reaction, and thus can be efficiently converted to vinyl cinnamate by first mixing p-hydroxycinnamic acid and vinyl acetate in aqueous tetrahydrofuran and sulfuric acid, and then reacting in a packed bed reactor of lead acetate. By the "trap-release" function of the ion-exchanged polypropylene resin, the unreacted sulfuric acid is recovered, and then the catalyst is easily recovered by column chromatography and can be reused in the system. Because the mixture has poor water solubility, the reaction is carried out in the environment of pure toluene, and because the biocatalyst is efficiently mixed, functional substances are generated by the reaction, and the whitening agent is obtained by dialysis.
Tyrosinase is considered to be a key enzyme in mammalian melanin biosynthesis, and thus inhibition of tyrosinase activity can reduce melanin synthesis. Tyrosinase inhibitors are of various types, such as reducing agents, dopaquinone scavengers, specific tyrosinase inactivators and specific tyrosinase inhibitors. Tyrosinase catalyzes the hydroxylation of tyrosine to generate L-3, 4-dihydroxyphenylalanine, and then the L-3, 4-dihydroxyphenylalanine is oxidized to generate dopaquinone. Melanin is formed by oxidative polymerization of several dopaquinone derivatives. Elastase is primarily associated with the degradation of elastin, a connective tissue component. During the natural aging process or under ultraviolet light conditions, increased elastase activity results in a decrease in elastin, a decrease in skin elasticity, and the appearance of wrinkles. Therefore, inhibition of elastase activity is considered to be an effective measure to prevent skin wrinkling. The whitening agent prepared by the invention acts on skin, can obviously inhibit the activity of tyrosinase, reduces the generation of melanin, and has the whitening effect. But also can act on elastase, reduce the activity of elastase, reduce the reduction amount of elastase, and increase the skin elasticity.
Ginseng is a useful herb for the prevention and treatment of a range of diseases. There are three main types of ginseng: white ginseng, red ginseng and black ginseng. The white ginseng is usually air-dried raw ginseng, and the red ginseng is prepared by steaming raw ginseng at 95-100 ℃ for a period of time. The black ginseng can be extracted from white ginseng, steamed at 95-100 deg.C for 3 hr, circulated for several times, and then dried. The main organic compounds in ginseng include ginsenosides, polysaccharides, sesquiterpenes, polyacetylene, phenolic compounds and others, of which ginsenosides are considered the most important bioactive compounds. Ginsenosides not present in white ginseng. Compared with red ginseng and white ginseng, the biological activity of the black ginseng is obviously improved. During the steaming process, ginsenoside is converted into a less polar component through hydrolysis, isomerization and dehydration. And the ginsenoside has the biological activities of resisting tumor, inflammation, platelet aggregation and the like.
Hibiscus cannabinus is an annual or perennial herb of the genus Hibiscus of the family Malvaceae. Up to 3 m, upright stem, no hair, and sharp prick; leaf allotypes, leaves are rich in bioactive compounds, such as: chlorogenic acid, coffee adjuvant, kaempferol and catechin hydrate. The method is widely applied in the fields of dietary fiber and animal feed. The hibiscus cannabinus leaf extract contains a large amount of polyphenol compounds, has good antioxidant and anti-tyrosinase properties, and has potential to be used as an additional value component for development of cosmetics.
Salicornia herbacea is a whole plant of Salicornia herbacea of Salicornia of Chenopodiaceae, is a green plant growing on beach and saline-alkali beach sand land with stems and leaves, and has a growth period of about 220 days, wherein the green, tender and fresh green stems can be maintained for 50-60 days. Is rich in vitamin C and 18 kinds of amino acids, and is a green health food beneficial to human body. After the seeds are mature, oil can be extracted, and the oil is rich in linoleic acid and is a high-grade raw material for edible and medicinal chemical industry. The medicine has effects of suppressing hyperactive liver, promoting urination, lowering blood pressure, etc.
Auricularia auricula, also called as black fungus and mulberry, is an important edible fungus in China and has wide natural distribution and artificial cultivation. The agaric has soft texture, tender mouthfeel, delicious taste and special flavor, is rich in protein, fat, saccharide, a plurality of vitamins and mineral substances, and has high nutritional value, and each 100 g of the agaric contains 11 g of water, 10.6 g of protein, 0.2 g of fat, 65 g of carbohydrate, 7 g of cellulose, 185 mg of iron, 375 mg of calcium and 201 mg of phosphorus. In addition, it also contains vitamin B, vitamin C, carotene, etc. Therefore, the agaric is a subsidiary food with rich nutrition and delicious taste and has good medical and pharmaceutical effects.
Most of the commonly used skin whitening agents contain harmful chemicals, such as mercury amide or mercury chloride, as active ingredients, and long-term use of such whitening products results in severe systemic reactions, such as allergy, muscle weakness, neuropathy, and nephrotoxicity. On the basis, the functional substance extracted from the plants has the advantages of low allergy and good curative effect.
Compared with the prior art, the invention has the beneficial effects that:
(1) the whitening emulsion containing the natural plant extract can effectively penetrate into the horny layer to inhibit the activity of tyrosinase, reduce the occurrence of anaphylactic reaction and improve the skin state by the synergistic interaction of the components of the black ginseng extract, the hibiscus syriacus leaf extract, the salicornia bigelovii extract and the agaric extract;
(2) adding hydroxycinnamic acid and vinyl acetate into tetrahydrofuran, reacting in a packed bed reactor, decompressing, evaporating, and performing column chromatography to obtain a mixture; and adding the mixture, N-dimethylbenzylamine, agarose, glucose oxidase and gellan gum into toluene, stirring for reaction, and dialyzing to obtain the whitening agent.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples. The procedures, conditions, experimental methods and the like for carrying out the present invention are common knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.
For the sake of brevity, the articles used in the following examples are all commercially available products unless otherwise specified, and the methods used are conventional methods unless otherwise specified.
The invention uses part of raw materials with the following sources:
ginseng, derived from Jilin Changbai mountain.
Folium Hibisci, Salicornia bigelovii, derived from Liaoning seed of Viburnum strigosum.
Auricularia auricula from Yunnan Wenshan.
Example 1
A preparation method of whitening emulsion containing natural plant extracts comprises the following components: 3kg of ginseng extract, 5kg of hibiscus syriacus leaf extract, 3kg of salicornia bigelovii extract, 6kg of agaric extract, 7kg of whitening agent, 10kg of glycerin, 8kg of humectant and 100kg of water.
The preparation method of the whitening emulsion containing the natural plant extracts comprises the following steps:
step 1, mixing water and ginseng extract, hibiscus syriacus leaf extract, salicornia bigelovii seed extract and agaric extract, and heating to 75 ℃ to obtain a mixed extract;
and 2, cooling the mixed extract prepared in the step 1 to 35 ℃, adding a whitening agent, glycerol and a humectant, mixing, homogenizing and cooling to room temperature to obtain the whitening emulsion containing the natural plant extract.
The ginseng extract is prepared by the following method: steaming dried Ginseng radix at 95 deg.C for 3 hr, drying at 50 deg.C for 30 hr, and repeating the above steps for 9 times; then adding the dried ginseng into 80wt% methanol water solution, adjusting the temperature to 80 ℃, grinding for 3h, then evaporating the methanol, recovering the solvent, and freeze-drying to prepare the ginseng extract.
The hibiscus cannabinus leaf extract is prepared by the following method: washing folium Hibisci with water, drying, and storing at-80 deg.C overnight; then, the sample is dried in a freeze dryer for 48 hours in vacuum with the vacuum degree of 0.001MPa, and ground, and the weight ratio of the hibiscus syriacus leaf powder: hexane is 1: 5, extracting at 60 deg.C for 3h, evaporating to remove hexane, flushing with nitrogen, and freezing to obtain folium Hibisci extract.
The salicornia extract is prepared by the following method: washing Salicornia herbacea with water, and freeze drying; grinding the dried salicornia into powder by using an electric grinder, and mixing the powder with water according to a mass ratio of 1: 30 mixing, heating at 100 deg.C for 1h, cooling at room temperature, centrifuging at 10000rpm for 15min, separating supernatant, and lyophilizing with lyophilizer to obtain Salicornia Herbacea extract.
The agaric extract is prepared by the following method: washing Auricularia with water, air drying at 30 deg.C in shade for 6 days, grinding into powder, extracting the powder with 70wt% ethanol water solution, and evaporating the extractive solution to obtain Auricularia extract.
The humectant is prepared from the following components in percentage by mass of 1: 2: 0.5 of glyceryl monostearate, butanediol and triethanolamine.
The preparation steps of the whitening agent are as follows:
s1, dissolving 0.1kg of p-hydroxycinnamic acid and 1.6kg of vinyl acetate in 10kg of tetrahydrofuran, and adding 0.2kg of 10wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 30min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 10 min; evaporated under reduced pressure, purified by n-hexane: the mass ratio of ethyl acetate is 9: 1, carrying out column chromatography on the prepared stationary phase to obtain a mixture;
s2, adding 0.2kg of N, N-dimethylbenzylamine, 0.1kg of agarose, 0.03kg of glucose oxidase and 0.4kg of gellan gum into 2kg of toluene, adding the mixture prepared in the step S1, dropwise adding 0.6kg of 5wt% sodium hydroxide aqueous solution at a dropping speed of 0.1mL/min, stirring and reacting at 28 ℃ for 30min, then adding 30wt% hydrochloric acid to adjust the pH to be neutral, dialyzing, and evaporating to remove the solvent to obtain the whitening agent.
Example 2
A whitening emulsion containing natural plant extracts was prepared in substantially the same manner as in example 1, with the only difference that: the preparation methods of the whitening agents are inconsistent.
The preparation method of the whitening agent comprises the following steps:
s1, dissolving 1.6kg of vinyl acetate in 10kg of tetrahydrofuran, and adding 0.2kg of 10wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 30min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 10 min; evaporated under reduced pressure, purified by n-hexane: the mass ratio of ethyl acetate is 9: 1, carrying out column chromatography on the prepared stationary phase to obtain a mixture;
s2, adding 0.2kg of N, N-dimethylbenzylamine, 0.1kg of agarose, 0.03kg of glucose oxidase and 0.4kg of gellan gum into 2kg of toluene, adding the mixture prepared in the step S1, dropwise adding 0.6kg of 5wt% sodium hydroxide aqueous solution at a dropping speed of 0.1mL/min, stirring and reacting at 28 ℃ for 30min, then adding 30wt% hydrochloric acid to adjust the pH to be neutral, dialyzing, and evaporating to remove the solvent to obtain the whitening agent.
Example 3
A whitening emulsion containing natural plant extracts was prepared in substantially the same manner as in example 1, with the only difference that: the preparation methods of the whitening agents are inconsistent.
The preparation method of the whitening agent comprises the following steps:
s1, dissolving 0.1kg of p-hydroxycinnamic acid in 10kg of tetrahydrofuran, and adding 0.2kg of 10wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 30min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 10 min; evaporated under reduced pressure, purified by n-hexane: the mass ratio of ethyl acetate is 9: 1, carrying out column chromatography on the prepared stationary phase to obtain a mixture;
s2, adding 0.2kg of N, N-dimethylbenzylamine, 0.1kg of agarose, 0.03kg of glucose oxidase and 0.4kg of gellan gum into 2kg of toluene, adding the mixture prepared in the step S1, dropwise adding 0.6kg of 5wt% sodium hydroxide aqueous solution at a dropping speed of 0.1mL/min, stirring and reacting at 28 ℃ for 30min, then adding 30wt% hydrochloric acid to adjust the pH to be neutral, dialyzing, and evaporating to remove the solvent to obtain the whitening agent.
Example 4
A whitening emulsion containing natural plant extracts was prepared in substantially the same manner as in example 1, with the only difference that: the preparation methods of the whitening agents are inconsistent.
The preparation method of the whitening agent comprises the following steps:
s1, dissolving 0.1kg of p-hydroxycinnamic acid and 1.6kg of vinyl acetate in 10kg of tetrahydrofuran, and adding 0.2kg of 10wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 30min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 10 min; evaporated under reduced pressure, purified by n-hexane: the mass ratio of ethyl acetate is 9: 1, carrying out column chromatography on the prepared stationary phase to obtain a mixture;
s2, adding 0.2kg of N, N-dimethylbenzylamine, 0.03kg of glucose oxidase and 0.4kg of gellan gum into 2kg of toluene, adding the mixture prepared in the step S1, dripping 0.6kg of 5wt% sodium hydroxide aqueous solution at a dripping speed of 0.1mL/min, stirring and reacting at 28 ℃ for 30min, adding 30wt% hydrochloric acid to adjust the pH value to be neutral, dialyzing, and evaporating to remove the solvent to obtain the whitening agent.
Comparative example 1
A whitening emulsion containing natural plant extracts was prepared in substantially the same manner as in example 1, with the only difference that: the preparation methods of the whitening agents are inconsistent.
The preparation method of the whitening agent comprises the following steps:
s1, adding 0.2kg of 10wt% sulfuric acid aqueous solution into 10kg of tetrahydrofuran to prepare a reactant; reacting for 30min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 10 min; evaporated under reduced pressure, purified by n-hexane: the mass ratio of ethyl acetate is 9: 1, carrying out column chromatography on the prepared stationary phase to obtain a mixture;
s2, adding 0.2kg of N, N-dimethylbenzylamine, 0.03kg of glucose oxidase and 0.4kg of gellan gum into 2kg of toluene, adding the mixture prepared in the step S1, dripping 0.6kg of 5wt% sodium hydroxide aqueous solution at a dripping speed of 0.1mL/min, stirring and reacting at 28 ℃ for 30min, adding 30wt% hydrochloric acid to adjust the pH value to be neutral, dialyzing, and evaporating to remove the solvent to obtain the whitening agent.
Comparative example 2
A whitening emulsion containing natural plant extracts was prepared in substantially the same manner as in example 1, with the only difference that: replacing the whitening agent with ascorbic acid.
Ascorbic acid, which can affect melanogenesis by reducing reactive oxygen levels in melanocytes, is a commonly used whitening agent.
Test example 1
Melanin synthesis inhibition test:
cultured melanoma cells of passage 4 at 1X 10 4 The seeds are inoculated on a 6-well plate at a density of one/mL, and the solution is changed after 24 hours. The samples prepared in examples and comparative examples were added, and each sample was added to 3 wellsThe sample concentration was 100. mu.L per well. The control was added with 0.9% aqueous sodium chloride solution instead of the sample. At 37 deg.C, 5% CO 2 After 72h incubation at concentration, the supernatant was discarded. 1mL of 2.5g/L pancreatin was added to each well and digested at room temperature for 5 min. Digestion was stopped by adding 4mL of culture medium and pipetting to a single cell suspension. Taking 0.5mL as cell count, centrifuging the rest cell suspension at 1500r/min for 10min, discarding the supernatant, adding 1mL of 1mol/L sodium hydroxide aqueous solution, incubating in 90 ℃ water bath for 2h, and measuring the absorbance value at 490nm of an enzyme labeling instrument. The melanin synthesis amount and the inhibition rate of the drug on the melanin synthesis are calculated according to the following formulas.
Melanin synthesis inhibition ═ 1- (sample well absorbance value/sample well cell density)/(control well absorbance value/control well cell density)) × 100%
The results are shown in table 1:
Figure 228695DEST_PATH_IMAGE001
the basic structure of the melanoma cell line, particularly the melanin synthesis function, is basically consistent with that of normal skin melanocytes of human beings, and it can be seen from table 1 that the sample of example 1 has the highest melanin synthesis inhibition rate, probably because the acetaldehyde-agarose is used as the best fixing agent in the invention, and p-hydroxycinnamic acid is fixed on the acetaldehyde-agarose, and the fixing agent not only can obtain higher catalytic efficiency under the condition of low biocatalyst loading, but also can be easily doped with a catalyst in a packed bed reactor, thereby ensuring controllable fluid dynamics and reaction time. Vinyl acetate is a more efficient acyl donor than other ethyl esters in a packed bed reactor mediated catalytic reaction, and thus can be efficiently converted to vinyl cinnamate by first mixing p-hydroxycinnamic acid and vinyl acetate in aqueous tetrahydrofuran and sulfuric acid, and then reacting in a packed bed reactor of lead acetate. By the "trap-release" function of the ion-exchanged polypropylene resin, the unreacted sulfuric acid is recovered, and then the catalyst is easily recovered by column chromatography and can be reused in the system. Because the mixture has poor water solubility, the reaction is carried out in the environment of pure toluene, and because the biocatalyst is efficiently mixed, functional substances are generated by the reaction, and the whitening agent is obtained by dialysis. The whitening agent acts on skin, can obviously inhibit the activity of tyrosinase, reduces the generation of melanin, and has whitening effect.
Test example 2
Free radical clearance test:
weighing 20mg of 2, 2-biphenyl-1-picrylhydrazino, and using 95wt% of absolute ethyl alcohol to fix the volume to 250mL for later use; 20mg of the samples prepared in examples and comparative examples were made up to 250mL with 99.9wt% ethanol aqueous solution for further use.
The testing step comprises the steps of taking 2mL of prepared sample and 2mL of 2, 2-biphenyl-1-picrylhydrazino solution, placing the sample and the 2, 2-biphenyl-1-picrylhydrazino solution in a test tube with a plug, placing the test tube in a thermostat, keeping the temperature for 1h at 37 ℃, taking 99.9wt% ethanol water solution as a blank control, and measuring the absorbance A of each sample to be tested at the wavelength of 517nm in an ultraviolet spectrophotometer i And the clearance is calculated as follows: clearance = [1- (a) i -A j )/A c ]×100%
A c The absorbance is 2mL of 99.9wt% ethanol aqueous solution added with 2mL of 2, 2-biphenyl-1-picrylhydrazino solution;
A i adding 2mL of 2, 2-biphenyl-1-picrylhydrazino solution into 2mL of prepared sample to obtain absorbance;
A j the absorbance of 2mL of a prepared sample added with 2mL of 99.9wt% ethanol aqueous solution;
three groups were tested for each sample, and the tests were averaged and the results are shown in table 2:
Figure 739311DEST_PATH_IMAGE002
in general, collagen in the skin reacts by the action of free radicals, so that the skin does not receive sufficient nutrition supply, thus causing the skin tissue to lose its vitality, lose its elasticity, generate wrinkles, dull skin color, etc., and the free radical scavenging ability reflects the antioxidant ability of the sample, and as can be seen from the experimental data of table 2, the sample prepared in example 1 has the best free radical scavenging ability, probably because elastase is mainly involved in the degradation of elastin, which is a connective tissue component. During the natural aging process or under ultraviolet light conditions, increased elastase activity results in a decrease in elastin, a decrease in skin elasticity, and the appearance of wrinkles. Therefore, inhibition of elastase activity is considered to be an effective measure to prevent skin wrinkling. The complete whitening agent prepared in embodiment 1 of the invention has good oxidation resistance, can act on elastase, reduces the activity of elastase, reduces the reduction amount of elastase, and increases skin elasticity.

Claims (10)

1. A whitening emulsion containing natural plant extracts is characterized by comprising the following components: ginseng extract, hibiscus syriacus leaf extract, salicornia bigelovii seed extract, agaric extract, whitening agent, glycerin, humectant and water.
2. The whitening emulsion containing natural plant extracts as claimed in claim 1, which is composed of the following components in parts by weight: 2-5 parts of black ginseng extract, 4-6 parts of hibiscus syriacus leaf extract, 1-3 parts of salicornia bigelovii extract, 5-8 parts of agaric extract, 5-8 parts of whitening agent, 5-15 parts of glycerin, 6-10 parts of humectant and 60-150 parts of water.
3. The whitening emulsion containing natural plant extracts according to claim 1 or 2, wherein the ginseng extract is prepared by the following method: steaming and boiling the dried ginseng at 90-100 ℃ for 2-5 h, drying at 40-60 ℃ for 20-40 h, and repeating the operation for 5-10 times; and then adding the dried ginseng into 70-85 wt% methanol water solution, adjusting the temperature to 70-90 ℃, grinding for 2-4 h, then evaporating the methanol, recovering the solvent, and freeze-drying to prepare the ginseng extract.
4. The whitening emulsion containing natural plant extracts of claim 1 or 2, wherein the hibiscus cannabinus leaf extract is prepared by the following method: washing the hibiscus cannabinus leaves with water, drying, and then, preserving overnight at the temperature of minus 70 to minus 90 ℃; and then vacuum drying for 40-60 h, wherein the vacuum degree is 0.0001-0.01 MPa, grinding, and mixing the hibiscus syriacus leaf powder: hexane is 1: 3-6, extracting at 50-70 ℃ for 2-5 h, evaporating to remove hexane, flushing with nitrogen, and freezing for storage to obtain the hibiscus cannabinus leaf extract.
5. The whitening emulsion containing natural plant extracts according to claim 1 or 2, wherein the salicornia extract is prepared by the following method: washing Salicornia bigelovii Torr with water, and freeze drying; grinding into powder, and mixing the powder with water according to a mass ratio of 1: 20-40, heating at 90-100 ℃ for 0.5-2 h, cooling at room temperature, centrifuging at 8000-12000 rpm for 10-20 min, separating supernatant, and freeze-drying to obtain the salicornia extract.
6. The whitening emulsion containing natural plant extracts according to claim 1 or 2, wherein the agaric extract is prepared by the following method: the agaric is washed by water, then dried in the shade at the temperature of 20-35 ℃ for 4-8 days, ground into powder, extracted by 60-80 wt% of ethanol water solution, and the extracting solution is evaporated and dried to obtain the agaric extract.
7. The whitening emulsion containing natural plant extracts of claim 1 or 2, wherein the humectant is selected from the group consisting of 1: 1.8-2.5: 0.3-0.8 of glyceryl monostearate, butanediol and triethanolamine.
8. The whitening emulsion containing natural plant extracts as claimed in claim 1 or 2, wherein the preparation steps of the whitening agent are as follows, the parts are all parts by weight:
s1, dissolving 0.05-0.2 part of p-hydroxycinnamic acid and 1-2 parts of vinyl acetate in 5-20 parts of tetrahydrofuran, and adding 0.1-0.5 part of 5-15 wt% sulfuric acid aqueous solution to prepare a reactant; reacting for 20-50 min in a packed bed reactor filled with lead acetate, and then transferring to a packed bed reactor filled with polypropylene resin for reacting for 5-20 min; evaporating under reduced pressure, and performing column chromatography on a stationary phase to obtain a mixture;
s2, adding 0.1-0.5 part of N, N-dimethylbenzylamine, 0.01-0.2 part of agarose, 0.01-0.05 part of glucose oxidase and 0.2-1 part of gellan gum into 1-5 parts of toluene, adding the mixture prepared in the step S1, dripping 0.4-1 part of 2-8 wt% sodium hydroxide aqueous solution at a dripping speed of 0.05-0.2 mL/min, stirring and reacting at 20-30 ℃ for 20-40 min, adding 20-35 wt% hydrochloric acid to adjust the pH value to be neutral, and dialyzing; evaporating under reduced pressure to remove solvent to obtain whitening agent.
9. The whitening emulsion containing natural plant extracts of claim 7, wherein: the stationary phase of the column chromatography in the step S1 is normal hexane and ethyl acetate according to the mass ratio of 7-10: 1 is configured.
10. The whitening emulsion containing natural plant extracts as claimed in claim 1 or 2, which is prepared by the following steps:
step 1, mixing water and a ginseng extract, a hibiscus syriacus leaf extract, a salicornia bigelovii extract and an agaric extract, and heating to 70-80 ℃ to obtain a mixed extract;
and 2, cooling the mixed extract prepared in the step 1 to 30-40 ℃, adding a whitening agent, glycerol and a humectant, mixing, homogenizing and cooling to room temperature to obtain the whitening emulsion containing the natural plant extract.
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