Plant extract composition and use thereof

Abstract

This invention discloses a plant extract composition and its application. The plant extract composition comprises black goji berry extract, a first brown algae extract, sea buckthorn fruit extract, and a second brown algae extract in a mass ratio of 1:1.2-2.0:0.15-0.35:0.50-0.90. The first brown algae extract contains fucoxanthin extracted using a monohydric alcohol aqueous solution as a solvent, and the second brown algae extract contains polysaccharides extracted using a dihydric alcohol aqueous solution as a solvent. The plant extract composition of this invention is not only low in skin irritation, safe, and environmentally friendly, but also has excellent sun protection enhancement and post-sun repair effects. It can partially or completely replace some existing basic sunscreens in sunscreen products and achieve better sun protection and post-sun repair effects.

Description

Technical Field

[0001] This invention relates to the field of daily chemical products, specifically to a plant extract composition and its application. Background Technology

[0002] Solar radiation includes UVC (100~280nm), UVB (280~320nm), and UVA (320~400nm). UVC is completely broken down and absorbed in the atmosphere. UVB can promote mineral metabolism and vitamin D formation in the body; however, UVB can also cause skin redness and peeling, and may lead to skin DNA damage. UVA, also known as the tanning band, has strong penetrating power and can penetrate deep into the dermis to produce reactive oxygen species. Long-term exposure to UVA will cause sunburn, pigmentation, photoaging, and other skin problems, and long-term exposure to UVA will cause irreversible loss of skin elasticity.

[0003] Traditional sunscreens contain sunscreen agents that can be categorized into physical and chemical sunscreens. Physical sunscreens, primarily composed of titanium dioxide, zinc oxide, and silica, reflect and scatter ultraviolet (UV) rays, providing physical shielding. However, they can feel unpleasant on the skin, leave a white cast, and nano-sized sunscreens are easily absorbed by the skin, leading to the accumulation of tiny particles in the stratum corneum. If not cleaned promptly, these particles can penetrate the subcutaneous circulation, affecting normal skin metabolism and reducing the skin's natural ability to resist UV rays. Furthermore, they can increase the metabolic burden on the liver and kidneys. Common chemical sunscreens include methoxycinnamic acid derivatives, salicylates, para-aminobenzoic acid, and their esters, which effectively absorb UV rays. However, these chemical sunscreens can easily flow into the ocean through seawater, causing continuous accumulation of pollutants. Some chemical sunscreens, such as oxybenzone and octyl methyl cinnamate, can induce large-scale coral bleaching and death, accelerate coral reef degradation, weaken coral resilience, and cause irreversible damage to the marine ecosystem, hindering sustainable marine development. Furthermore, some chemical sunscreens have problems such as skin irritation and photodegradation that urgently need to be addressed. Summary of the Invention

[0004] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a new plant extract composition that is not only less irritating to the skin, safe, and environmentally friendly, but also has excellent sun protection enhancement and post-sun repair effects.

[0005] The present invention also provides an application of the above-mentioned plant extract composition in the preparation of sunscreen products.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A plant extract composition comprising black goji berry extract, a first brown algae extract, sea buckthorn fruit extract, and a second brown algae extract, wherein the mass ratio of the black goji berry extract, the first brown algae extract, the sea buckthorn fruit extract, and the second brown algae extract is 1:1.2-2.0:0.15-0.35:0.50-0.90, wherein the first brown algae extract contains fucoxanthin extracted using a monohydric alcohol aqueous solution as a solvent, and the second brown algae extract contains polysaccharides extracted using a dihydric alcohol aqueous solution as a solvent.

[0007] In some embodiments of the present invention, the mass ratio of the black goji berry extract, the first brown algae extract, the sea buckthorn fruit extract, and the second brown algae extract is 1:1.35-1.65:0.2-0.32:0.60-0.80.

[0008] According to certain specific aspects of the present invention, in the formula "1∶1.2-2.0∶0.15-0.35∶0.50-0.90", the numerical range "1.2-2.0" can be 1.2, 1.22, 1.25, 1.3, 1.32, 1.35, 1.38, 1.4, 1.42, 1.45, 1.48, 1.5, 1.52, 1.55, 1.58, 1.6, 1.65, 1.68, 1.7, 1.8, 1.9, 2.0, etc., and "0.15-0.35" can be 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0, etc. 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, etc.; "0.50-0.90" can be 0.50, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.68, 0.70, 0.72, 0.75, 0.78, 0.80, 0.82, 0.85, 0.88, 0.90, etc.

[0009] Black goji berries belong to the genus *Lycium* of the Solanaceae family. They are perennial shrubs with excellent environmental adaptability, tolerant of various soil conditions, and exhibit outstanding resilience. They also possess ecological value in windbreak and sand fixation, as well as water and soil conservation. Black goji berries are the dried fruit of the black goji berry plant. They are neutral in nature and sweet in taste, entering the liver and kidney meridians, and also the lung meridian. Black goji berries are known as "Qiaonoying-Harmag" in Mongolian and "Pangma" in Tibetan. They were first recorded in the Tibetan medical classic *Four Tantras*, where they are described as "nourishing yin and tonifying the kidneys, generating essence and nourishing blood, improving eyesight and calming the mind, and promoting blood circulation." Long-term consumption is said to "give one a rosy complexion and promote longevity." Black goji berries are rich in anthocyanins and flavonoids. They are hailed as the "King of Anthocyanins," having the highest known anthocyanin content among plants. Anthocyanins are natural water-soluble pigments widely distributed in plant leaves, flowers, and fruits. As an important plant pigment, they can make plants appear pink to blue-purple. They are also the most effective natural water-soluble free radical scavengers discovered to date. Studies suggest that anthocyanins have physiological effects such as anti-oxidation, anti-inflammation, anti-tumor, prevention of human chronic diseases, control of obesity, and relief of diabetes.

[0010] Sea buckthorn is a traditional medicinal and edible herb, traditionally used for its lung-benefiting, blood-activating, stasis-removing, cough-relieving, and phlegm-reducing effects. The core functional active ingredients of sea buckthorn fruit are sea buckthorn polysaccharides and sea buckthorn fruit oil. Sea buckthorn polysaccharides mainly contain monosaccharides such as xylose, arabinose, glucose, galactose, and fructose, which can exert pharmacological effects such as anti-oxidation, anti-inflammation, immune regulation, and liver damage reduction. Sea buckthorn fruit oil contains various nutritional and active substances such as oleic acid, linoleic acid, tocopherol, phytosterols, carotenoids, and flavonoids, possessing excellent antioxidant, skin-brightening, and skin-soothing skincare benefits.

[0011] Brown algae are an important biological resource in the ocean. In my country, brown algae have a medicinal history spanning thousands of years. Records in the *Compendium of Materia Medica* indicate that kelp, seaweed, and Sargassum fusiforme are commonly used to treat goiter, fistulas, and other edema conditions, and also possess diuretic and swelling-reducing effects, making them suitable for treating various edema syndromes. Brown algae are rich in secondary metabolites, such as fucoxanthin, polysaccharides, polyphenols, and sterols, which exhibit physiological activities including anti-tumor, blood pressure lowering, blood sugar regulation, antibacterial, and anti-inflammatory effects. Fucoxanthin, a type of carotenoid containing an epoxide structure, possesses biological activities such as free radical scavenging, anti-inflammatory, liver protection, and ultraviolet radiation absorption. Brown algal polysaccharides are a general term for polysaccharides extracted from brown algae and are one of the natural active substances in brown algae, stored in large quantities in the cell walls and intercellular spaces. Brown algal polysaccharides are multi-component mixtures, with their core components including alginate, fucoxanthin, and brown algal starch. Brown algae polysaccharides possess various biological activities, including antioxidant, anti-inflammatory, immunomodulatory, antitumor, antibacterial, and antiviral effects. This invention utilizes a differentiated extraction process to isolate fucoxanthin and brown algae polysaccharides from brown algae.

[0012] In some embodiments of the present invention, the first brown algae extract is added as a first brown algae extract solution, which is prepared by the following method: mixing raw brown algae with a first solvent, extracting under heating conditions, filtering, removing the first solvent, dispersing in oil, and obtaining the first brown algae extract solution; wherein, the first solvent is a C1-C4 monohydric alcohol aqueous solution with a mass concentration of greater than or equal to 80%.

[0013] In some embodiments of the present invention, the second brown algae extract is added as a second brown algae extract solution, which is prepared by the following method: mixing raw brown algae with a second solvent, extracting under heating conditions, filtering, and obtaining the second brown algae extract solution; wherein, the second solvent is a diol aqueous solution with a mass concentration of 10%-50%; The diol has the following structure: In the formula, R1, R2, R3, and R4 are independently selected from H and C. 1-3 Alkyl or hydroxyl, and two of R1, R2, R3, and R4 are selected from hydroxyl groups.

[0014] In some embodiments of the present invention, during the preparation of the first brown algae extract solution, the mass ratio of the raw material brown algae to the first solvent is 1:15-25.

[0015] In some embodiments of the present invention, during the preparation of the first brown algae extract solution, the heating conditions are controlled so that the extraction is carried out at a temperature of 50-70°C.

[0016] In some embodiments of the present invention, the C1-C4 monohydric alcohols used in the preparation of the first brown algae extract solution include ethanol or propanol.

[0017] In some embodiments of the present invention, the oils used in preparing the first brown algae extract solution include caprylic / capric triglycerides.

[0018] In some embodiments of the present invention, the first solvent is an aqueous solution of C1-C4 monohydric alcohol with a mass concentration of 90%-98%.

[0019] In some embodiments of the present invention, during the preparation of the second brown algae extract solution, the mass ratio of the raw material brown algae to the second solvent is 1:15-25, for example, it can be 1:18, 1:20, 1:22, 1:25, etc.

[0020] In some embodiments of the present invention, during the preparation of the second brown algae extract solution, the heating conditions are controlled so that the extraction is carried out at a temperature of 50-70°C, for example, at temperatures of 50°C, 52°C, 55°C, 58°C, 60°C, 62°C, 65°C, 68°C or 70°C.

[0021] In some embodiments of the present invention, the diol used in preparing the second brown algae extract solution includes dipropylene glycol.

[0022] In some embodiments of the present invention, in the process of preparing the second brown algae extract solution, the second solvent is a diol aqueous solution with a mass concentration of 20%-40%.

[0023] In some embodiments of the present invention, the black goji berry extract is added in the form of a black goji berry extract solution, which is prepared by the following method: mixing raw black goji berries with water, extracting, filtering, and obtaining the black goji berry extract solution.

[0024] Furthermore, the mass ratio of raw black goji berries to water is 1:15-25, for example, it can be 1:18, 1:20, 1:22, 1:25, etc.

[0025] Furthermore, in the process of preparing the black goji berry extract solution, the extraction is controlled to be carried out at a temperature of 1-10°C, and even more specifically at 2-6°C.

[0026] In some embodiments of the present invention, the sea buckthorn fruit extract is added in the form of a sea buckthorn fruit extract solution, which is prepared by the following method: mixing raw sea buckthorn fruit with a third solvent, extracting under heating conditions, filtering, and obtaining the sea buckthorn fruit extract solution; wherein, the third solvent is a diol aqueous solution with a mass concentration of 10%-50%; The diol has the following structure: In the formula, R1, R2, R3, and R4 are independently selected from H and C. 1-3 Alkyl or hydroxyl, and two of R1, R2, R3, and R4 are selected from hydroxyl groups.

[0027] In some embodiments of the present invention, during the preparation of the sea buckthorn fruit extract solution, the mass ratio of the raw sea buckthorn fruit to the third solvent is 1:15-25, for example, it can be 1:18, 1:20, 1:22, 1:25, etc.

[0028] In some embodiments of the present invention, during the preparation of the sea buckthorn fruit extract solution, the heating conditions are controlled so that the extraction is carried out at a temperature of 50-70°C, for example, at temperatures of 50°C, 52°C, 55°C, 58°C, 60°C, 62°C, 65°C, 68°C or 70°C.

[0029] In some embodiments of the present invention, the diol used in preparing the sea buckthorn fruit extract solution includes dipropylene glycol.

[0030] In some embodiments of the present invention, in the process of preparing the sea buckthorn fruit extract solution, the third solvent is a diol aqueous solution with a mass concentration of 20%-40%.

[0031] Another technical solution provided by the present invention: a sunscreen product, wherein the sunscreen product comprises a sunscreen agent, and the sunscreen agent comprises the above-described plant extract composition.

[0032] In some embodiments of the present invention, the plant extract composition comprises 0.1%-10% by weight, more specifically 0.5%-5%, in the sunscreen product.

[0033] According to certain aspects of the present invention, the plant extract composition in the sunscreen product comprises, by weight percentage, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.5%, 1.8%, 2.0%, 2.2%, 2.3%, 2.5%, 2.6%, 2.8%, 3.0%, 3.2%, 3.5%, 3.8%, 4.0%, 4.2%, 4.5%, 4.8%, 5.0%, 5.2%, 5.5%, 5.8%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, etc.

[0034] In some embodiments of the present invention, the sunscreen product comprises, by weight percentage: 5%-15% of a moisturizer, 0.5%-4% of a skin feel modifier, 0.1%-0.6% of ammonium acryloyl dimethyl taurate / VP copolymer, 0.05%-0.30% of polyacrylate crosspolymer-6, 0.02%-0.25% of hydroxypropyl methylcellulose stearyl ether, 0.1%-10% of the plant extract composition, 1%-30% of a base sunscreen, 0.1%-10% of a moisturizer, and 40%-65% of water.

[0035] Further, by weight percentage, the sunscreen product comprises: 5%-12% moisturizer, 1%-3% skin feel modifier, 0.1%-0.6% ammonium acryloyl dimethyl taurate / VP copolymer, 0.05%-0.30% polyacrylate crosspolymer-6, 0.02%-0.25% hydroxypropyl methylcellulose stearyl ether, 0.5%-8% of the plant extract composition, 5%-30% base sunscreen, 0.1%-10% emollient, and 46%-65% water.

[0036] In some embodiments of the present invention, the humectant may be glycerin, butylene glycol, etc.

[0037] In some embodiments of the present invention, the skin feel modifier may be polymethylsilsesquioxane, etc.

[0038] In some embodiments of the present invention, the basic sunscreen agent in the sunscreen product, by weight percentage, includes: 8%-13% C12-15 benzoyl alcohol, 5%-9% titanium dioxide, 0.5%-1.7% aluminum stearate, 0.5%-1.5% polyhydroxystearic acid, and 0.2%-0.6% aluminum oxide.

[0039] In some embodiments of the present invention, the emollient may include octyl polymethylsiloxane, ethylhexylglycerin, glyceryl caprylate, etc.

[0040] In some embodiments of the present invention, the sunscreen product contains, by weight percentage, 1%-3% octyl polymethylsiloxane, 0.05%-0.2% ethylhexylglycerin, and 0.05%-0.2% glyceryl caprylate.

[0041] In some embodiments of the present invention, the sunscreen product further comprises 1%-3% of 1,2-hexanediol and 0.5%-1.5% of 1,2-pentanediol by weight percentage.

[0042] In some embodiments of the present invention, the extracts in the plant extract composition can be mixed and added together to the basic sunscreen product, or they can be added separately, or the water extract can be added to the aqueous phase and the alcohol extract can be added to the oil phase.

[0043] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: Based on the shortcomings of existing sunscreens in terms of safety, environmental friendliness, and sun protection efficacy, the inventors of this invention unexpectedly discovered during experimental research that combining black goji berry extract, first brown algae extract (fucoxanthin), sea buckthorn fruit extract, and second brown algae extract (polysaccharide) in a certain proportion significantly improves sun protection efficacy. This combination can partially or completely replace some existing basic sunscreens to a certain extent, while also providing some post-sun repair effects. Attached Figure Description

[0044] Figure 1 Photographs of the appearance of the sunscreen products obtained by applying Example 7, Comparative Examples 1-7, and the blank control group; Figure 2 The absorbance test charts are for the sunscreen products obtained from Application Example 7 of the present invention, as well as Comparative Examples 1-7 and the blank control group. Detailed Implementation

[0045] The above-mentioned solution will be further described below with reference to specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited to the scope of the following embodiments; the implementation conditions used in the embodiments can be further adjusted according to specific requirements, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0046] Unless otherwise specified in the following examples, all raw materials are commercially available or prepared by conventional methods in the art.

[0047] In the following examples, black goji berry extract and black goji berry extract solution were prepared by the following method: Black goji berry raw materials were washed and dried. A certain mass of sample was weighed and added to pure water. The sample was soaked at 4°C for 24 hours at a material-to-liquid ratio of 1:20. The filtrate was obtained by filtering with 15-20 μm pore size filter paper, which was the black goji berry extract solution. The mass concentration of black goji berry extract in the black goji berry extract solution was measured to be 3.11%. The first brown algae extract and the first brown algae extract solution were prepared by the following method: The brown algae raw material was washed and dried, a certain mass of sample was weighed, and added to a 95% ethanol aqueous solution at a material-to-liquid ratio of 1:20. After extraction at 60℃ for 3 hours, the filtrate was obtained by filtration using qualitative filter paper with a pore size of 15~20μm. The filtrate was then poured into a rotary evaporator until it became a paste, dissolved, and stored in GTCC (caprylic / capric triglyceride) to obtain the first brown algae extract solution. The mass concentration of the first brown algae extract in the first brown algae extract solution was measured to be 1.56%. Sea buckthorn fruit extract and sea buckthorn fruit extract solution were prepared by the following method: sea buckthorn fruit raw material was washed and dried, a certain mass of sample was weighed, and mixed with 30% dipropylene glycol aqueous solution at a material-to-liquid ratio of 1:20. The mixture was soaked at 60℃ for 180 minutes, and the filtrate was obtained by filtering with qualitative filter paper with a pore size of 15~20μm. The sea buckthorn fruit extract solution was obtained, and the mass concentration of sea buckthorn fruit extract in the solution was measured to be 0.82%. The second brown algae extract and the second brown algae extract solution were prepared by the following method: the brown algae raw material was washed and dried, a certain mass of sample was weighed, and added to a 30% (w / w) dipropylene glycol aqueous solution. The mixture was mixed at a material-to-liquid ratio of 1:20, extracted at 60℃ for 180 minutes, and then filtered through qualitative filter paper with a pore size of 15-20 μm to obtain the filtrate, which is the second brown algae extract solution. The mass concentration of the second brown algae extract in the second brown algae extract solution was measured to be 2.14%. Purple corn extract solution was prepared by the following method: purple corn raw material was washed, dried and crushed, a certain mass of sample was weighed and added to pure water, the sample was soaked at 4℃ for 24 hours at a material-to-liquid ratio of 1:20, and then filtered with 15~20μm pore size filter paper to obtain the filtrate, which is the purple corn extract solution; the purple corn extract solution was concentrated so that the mass concentration of purple corn extract in the purple corn extract solution was 3.11%.

[0048] Example 1: This example provides a plant extract composition and its preparation method. The formulation of the plant extract composition is shown in Table 1.

[0049] Table 1 The preparation method of this plant extract composition includes: mixing and blending the components in Table 1.

[0050] Example 2: This example provides a plant extract composition and its preparation method. The formulation of the plant extract composition is shown in Table 2.

[0051] Table 2 The preparation method of this plant extract composition is the same as in Example 1.

[0052] Example 3: This example provides a plant extract composition and its preparation method. The formulation of the plant extract composition is shown in Table 3.

[0053] Table 3 The preparation method of this plant extract composition is the same as in Example 1.

[0054] Comparative Examples 1-6: These examples provide a plant extract composition and its preparation method, the formulation of which is shown in Table 4.

[0055] Table 4 The preparation method of this plant extract composition is the same as in Example 1.

[0056] Comparative Example 7: These examples provide a plant extract composition and its preparation method, the formulation of which is shown in Table 5.

[0057] Table 5 The preparation method of this plant extract composition is the same as in Example 1.

[0058] Application Examples 1-7: These examples provide a sunscreen product and its preparation method. The formula of the sunscreen product is shown in Table 6.

[0059] Table 6 The preparation method of this sunscreen product includes: After phase A is weighed out, phase B is added to phase A and stirred. Then phase C is added while stirring. After heating to 90°C, phase D is added while stirring. After cooling to room temperature, the aqueous phase is obtained. First, weigh out phase E and phase F separately. Heat phase F to 50°C to dissolve it, then cool it to room temperature. E phase and F phase were added to the aqueous phase and emulsified at room temperature and 6000 rpm. Then add other phases, mix well, and you will get the sunscreen product.

[0060] Application Comparative Example 1: This example provides a sunscreen product and its preparation method, which is basically the same as the application example 7, except that the plant extract composition of Comparative Example 1 is used instead of the plant extract composition of Example 1.

[0061] Application Comparative Example 2: This example provides a sunscreen product and its preparation method, which is basically the same as in Application Example 7, except that the plant extract composition of Comparative Example 2 is used instead of the plant extract composition of Example 1.

[0062] Application Comparative Example 3: This example provides a sunscreen product and its preparation method, which is basically the same as in Application Example 7, except that the plant extract composition of Comparative Example 3 is used instead of the plant extract composition of Example 1.

[0063] Application Comparative Example 4: This example provides a sunscreen product and its preparation method, which is basically the same as in Application Example 7, except that the plant extract composition of Comparative Example 4 is used instead of the plant extract composition of Example 1.

[0064] Application Comparative Example 5: This example provides a sunscreen product and its preparation method, which is basically the same as in Application Example 7, except that the plant extract composition of Comparative Example 5 is used instead of the plant extract composition of Example 1.

[0065] Application Comparative Example 6: This example provides a sunscreen product and its preparation method, which is basically the same as in Application Example 7, except that the plant extract composition of Comparative Example 6 is used instead of the plant extract composition of Example 1.

[0066] Application Comparative Example 7: This example provides a sunscreen product and its preparation method, which is basically the same as the application example 7, except that the plant extract composition of Comparative Example 7 is used instead of the plant extract composition of Example 1.

[0067] See Figure 1 The image shows the appearance of the sunscreen products obtained in Application Example 7, Comparative Examples 1-7, and the blank control group. The viscosity of the sunscreen product obtained in the blank control group was measured using an LV4*6 rotor, and the result was 49500 mPa·s.

[0068] Performance testing: (1) Absorbance test The absorbance of the sunscreen products obtained from Application Example 7, Comparative Examples 1-7, and the blank control group was tested. 1. Test method: A 1.2 cm × 4.0 cm piece of medical tape (simulating the micropores of human skin) was attached to the transparent side of a clean quartz cuvette. The sunscreen product was accurately weighed (10.0 ± 0.2) mg. After wearing medical latex gloves and applying the product evenly, it was left to stand for 30 min. The absorbance in the range of 190 to 550 nm was measured. The arithmetic mean of the measured values ​​was calculated. The results were then used to comprehensively evaluate the sun protection effect in the UVA, UVB, and UVC regions.

[0069] 2. Testing instrument: UV-1900 spectrophotometer.

[0070] 3. Test results are shown in Table 7 and... Figure 2As shown.

[0071] Table 7 As shown in Table 7, the average absorbance of Application Example 7 is the highest in the entire UV region, and it has the best synergistic effect on sun protection.

[0072] (2) In vitro SPF value test 1. Testing Methods 1) Mix the material at a concentration of 2 mg / cm³ 2 On the standard application value measurement plate, the total application amount was 32 ± 0.2 mg.

[0073] 2) The SPF value of sunscreen products was determined using a UV2000 UV protection index analyzer.

[0074] 2. Testing instrument: UV2000 UV protection index analyzer.

[0075] 3. The test results are shown in Tables 8 and 9.

[0076] Table 8 Table 9 It is evident that the effect of application Example 7 is the best, indicating that the plant extract composition prepared according to the formulation of Example 1 has the best synergistic effect on sun protection; at the same time, it can also be seen that when the amount of the plant extract composition of the present invention reaches 0.5%, the efficacy of ultraviolet protection can be significantly increased.

[0077] (3) Repair test 1. Testing Methods The test site (inner forearm) was left to stand for 30 minutes in a constant temperature and humidity environment.

[0078] The transepidermal water loss rate of the skin was measured before product use and 7 and 14 days after use.

[0079] The sample concentration was (2.0 ± 0.1) mg / cm³. 2 Apply the sample in a single coat using the specified amount of latex, and then apply the sample evenly to the test area while wearing a latex finger cot.

[0080] 2. Evaluation criteria: Improvement value of transepidermal water loss rate = Transepidermal water loss rate before use - Transepidermal water loss rate after use; The testing method is as follows: refer to T / CAB 0152-2022 Test Method for Seven Efficacy Items of Cosmetics: Anti-wrinkle, Firming, Moisturizing, Oil Control, Repairing, Nourishing, and Soothing. Testing instrument: Tewameter (transepidermal water loss meter); Test environment: Temperature: 21±1℃; Humidity: 50±10%; 3. The test results are shown in Table 10.

[0081] Table 10 Data analysis showed that, compared with before product use, the plant extract composition of Example 1 of this invention applied to sunscreen products showed a significant decrease in transepidermal water loss rate of the skin after 7 and 14 days of use, with decreases of 1.67 and 2.05, respectively. This indicates that the tested product has a repairing effect, while the effect of the blank control group was relatively poor.

[0082] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0083] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A plant extract composition, characterized by, The plant extract composition comprises a Lycium ruthenicum Murr extract, a first brown algae extract, a Hippophae rhamnoides Linn fruit extract, a second brown algae extract, and the mass ratio of the Lycium ruthenicum Murr extract, the first brown algae extract, the Hippophae rhamnoides Linn fruit extract, and the second brown algae extract is 1:1.2-2.0:0.15-0.35:0.50-0.90, the first brown algae extract comprises fucoidan extracted by using a monohydric alcohol aqueous solution as a solvent, and the second brown algae extract comprises polysaccharide extracted by using a dihydric alcohol aqueous solution as a solvent.

2. The plant extract composition according to claim 1, characterized by, The mass ratio of the Lycium ruthenicum Murr extract, the first brown algae extract, the Hippophae rhamnoides Linn fruit extract, and the second brown algae extract is 1:1.35-1.65:0.2-0.32:0.60-0.

80.

3. The plant extract composition according to claim 1, characterized by, The first brown algae extract is added in the form of a first brown algae extract solution prepared by mixing raw brown algae and a first solvent, extracting under heating, filtering, removing the first solvent, and dispersing in oil and fat to obtain the first brown algae extract solution; wherein the first solvent is a C1-C4 monohydric alcohol aqueous solution with a mass concentration of greater than or equal to 80%. The second brown algae extract is added in the form of a second brown algae extract solution prepared by mixing raw brown algae and a second solvent, extracting under heating, filtering, and obtaining the second brown algae extract solution; wherein the second solvent is a dihydric alcohol aqueous solution with a mass concentration of 10%-50%. The diol has the following structure: wherein R1, R2, R3, R4are independently selected from H, C 1-3 alkyl, hydroxyl, and two of R1, R2, R3, R4are hydroxyl.

4. The plant extract composition according to claim 3, characterized by, In the process of preparing the first brown algae extract solution, the mass ratio of raw brown algae to the first solvent is 1:15-25; and / or, in the process of preparing the first brown algae extract solution, the heating condition is controlled to enable extraction at a temperature of 50-70 DEG C; and / or, in the process of preparing the first brown algae extract solution, the C1-C4 monohydric alcohol comprises ethanol or propanol; and / or, in the process of preparing the first brown algae extract solution, the oil and fat comprises caprylic acid / capric acid triglyceride; and / or, the first solvent is a C1-C4 monohydric alcohol aqueous solution with a mass concentration of 90%-98%; and / or, in the process of preparing the second brown algae extract solution, the mass ratio of raw brown algae to the second solvent is 1:15-25; and / or, in the process of preparing the second brown algae extract solution, the heating condition is controlled to enable extraction at a temperature of 50-70 DEG C; and / or, in the process of preparing the second brown algae extract solution, the dihydric alcohol comprises dipropylene glycol; and / or, in the process of preparing the second brown algae extract, the second solvent is a dihydric alcohol aqueous solution with a mass concentration of 20%-40%.

5. The plant extract composition according to claim 1, characterized by, The Lycium ruthenicum Murr extract is added in the form of a Lycium ruthenicum Murr extract solution prepared by mixing raw Lycium ruthenicum Murr and water, extracting, and filtering to obtain the Lycium ruthenicum Murr extract solution; Further, the mass ratio of raw Lycium ruthenicum Murr to water is 1:15-25; Further, the extraction is controlled to be performed at a temperature of 1-10 DEG C, and more further at a temperature of 2-6 DEG C.

6. The plant extract composition according to claim 1, characterized by, The sea buckthorn fruit extract is added in the form of a sea buckthorn fruit extract solution prepared by mixing raw sea buckthorn fruit with a third solvent, extracting under heating conditions, and filtering to obtain the sea buckthorn fruit extract solution; wherein the third solvent is a glycol aqueous solution with a mass concentration of 10%-50%. The diol has the following structure: wherein R1, R2, R3, R4are independently selected from H, C 1-3 alkyl, hydroxyl, and two of R1, R2, R3, R4are hydroxyl.

7. The plant extract composition according to claim 6, characterized in that, In the process of preparing the sea buckthorn fruit extract solution, the mass ratio of raw sea buckthorn fruit to the third solvent is 1:15-25; and / or in the process of preparing the sea buckthorn fruit extract solution, the heating conditions are controlled so that the extraction is carried out at a temperature of 50-70℃; and / or in the process of preparing the sea buckthorn fruit extract solution, the glycol includes dipropylene glycol; and / or in the process of preparing the sea buckthorn fruit extract solution, the third solvent is a glycol aqueous solution with a mass concentration of 20%-40%.

8. A sunscreen product comprising a sunscreen agent, characterized in that, The sunscreen agent comprises the plant extract composition of any one of claims 1-7.

9. The sunscreen product of claim 8, wherein, The plant extract composition accounts for 0.1%-10%, further 0.5%-5% in the sunscreen product in terms of mass percentage.

10. The sunscreen product of claim 8, wherein, The sunscreen product comprises, in terms of mass percentage: 5%-15% of a moisturizer, 0.5%-4% of a feel modifier, 0.1%-0.6% of acrylamidomethylpropane sulfonic acid ammonium / VP copolymer, 0.05%-0.30% of polyacrylate crosspolymer-6, 0.02%-0.25% of hydroxypropyl methylcellulose stearyloxy ether, 0.1%-10% of the plant extract composition, 1%-30% of a base sunscreen agent, 0.1%-10% of an emollient, and 40%-65% of water.

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