A steam-blasted anji white tea anti-aging repair whitening composition

Abstract

This invention discloses an anti-aging, repairing, and whitening composition based on steam-exploded Anji white tea, belonging to the field of cosmetic technology. The composition comprises the following components in parts by weight: 1-10 parts steam-exploded Anji white tea extract, 0.5-5 parts tea polysaccharides, 0.1-2 parts sodium hyaluronate, 2-8 parts glycerin, 2-8 parts butylene glycol, and the remainder being a cosmetically acceptable carrier. The steam-exploded Anji white tea extract is obtained by pre-treating Baiye No. 1 summer and autumn tea with steam explosion (0.6-0.8 MPa, 120-180 seconds), followed by low-temperature extraction, membrane concentration, and drying. The cell wall breakage rate is ≥99.9%, and it is rich in EGCG and theanine. This invention's composition, through the synergistic effect of the antioxidant, anti-inflammatory, and tyrosinase-inhibiting effects of the steam-exploded Anji white tea extract and the moisturizing and repairing effects of tea polysaccharides, effectively scavenges free radicals, inhibits inflammatory factors, reduces melanin production, and promotes skin barrier repair, possessing triple effects of anti-aging, repair, and whitening. It can be used to prepare skincare products such as serums, lotions, creams, and masks. This invention provides a new approach for the high-value utilization of Anji white tea during summer and autumn.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to an anti-aging, repairing, and whitening composition made from steamed Anji white tea. Background Technology

[0002] Anji White Tea is a green tea made from the fresh leaves of the Baiye No. 1 tea tree variety, and is a geographical indication product of Anji County, Zhejiang Province. The Anji White Tea described in this invention refers specifically to tea made from the fresh leaves of the Baiye No. 1 tea tree variety. The Baiye No. 1 tea tree variety has high amino acid content (2-5%) and low tea polyphenol content (8-12%), resulting in Anji White Tea with a fresh, sweet taste. Summer and autumn teas are of lower quality, with a resource utilization rate of less than 20%, leading to a significant waste of high-quality tea leaves. As living standards improve, consumers have increasingly higher demands for the efficacy and safety of skincare products, making natural skincare products with multiple benefits such as anti-aging, repair, and whitening a market hotspot. Tea extract, due to its various bioactivities including antioxidant, anti-inflammatory, antibacterial, and whitening properties, is widely used in cosmetics. Studies have shown that EGCG can exert anti-aging effects by reducing TNF-induced MMP-1 expression, while also having whitening effects by inhibiting tyrosinase activity and reducing melanin production. However, traditional tea extraction processes suffer from low extraction rates, significant loss of active ingredients, and residual bitter substances, limiting its application in high-end skincare products. In the prior art, CN102088953B discloses a skin whitening, moisturizing, and anti-wrinkle cosmetic composition containing green tea polysaccharides, and US8835404 discloses a similar method for preparing green tea polysaccharides and their cosmetic applications, but neither involves steam explosion pretreatment technology, nor does it synergistically combine tea polysaccharides with steam-exploded Anji white tea extract. CN115715747A discloses the application of black tea polysaccharides in the preparation of anti-stress products, but does not involve Anji white tea or the steam explosion process. CN111759761A discloses a white tea mask containing theanine, tea polysaccharides, and tea polyphenols, but it also does not use steam explosion treatment, and the component system is different. US8852655 discloses an anti-inflammatory and antioxidant composition of green tea polysaccharides and matsutake mushroom extract, but does not involve steam-exploded Anji white tea extract or its whitening effects. Steam explosion technology is a green and efficient plant cell wall disruption technology. This invention is the first to combine steam-exploded Anji white tea extract with tea polysaccharides, sodium hyaluronate, and other ingredients. By utilizing the synergistic effects of the steam-exploded extract's antioxidant, anti-inflammatory, and whitening properties with the moisturizing and repairing effects of tea polysaccharides, a multi-target anti-aging, repairing, and whitening composition is formed. Summary of the Invention

[0003] A steam-exploded Anji white tea anti-aging, repairing, and whitening composition, comprising the following components in parts by weight: Steamed Anji White Tea Extract: 1-10 parts Tea polysaccharides: 0.5-5 parts Sodium hyaluronate: 0.1-2 parts Glycerin: 2-8 parts Butylene glycol: 2-8 parts Acceptable carriers in cosmetics: residual amount The steam-exploded Anji white tea extract is prepared by steam explosion pretreatment of fresh leaves of Baiye No. 1 summer and autumn tea (0.6-0.8MPa, 120-180 seconds), followed by water extraction, filtration, concentration and drying at 50-70℃. The cell wall breakage rate is ≥99.9%, the EGCG content is ≥5%, and theanine content is ≥2%. The tea polysaccharide is a tea polysaccharide recovered from the waste liquid extracted from steam-exploded Anji white tea, with a purity of ≥60%. Beneficial effects First, the steam-exploded Anji white tea extract is rich in EGCG and theanine, possessing strong antioxidant, anti-inflammatory, and whitening effects. Studies have shown that EGCG, GCG, ECG, and other tea catechins can significantly inhibit tyrosinase activity and melanin synthesis by downregulating the cAMP / CREB / MITF signaling pathway, with inhibitory effects superior to traditional whitening agents such as arbutin. Furthermore, steam explosion treatment significantly enhances the cellular antioxidant activity of the plant extract, providing an excellent antioxidant basis for the composition. Secondly, tea polysaccharides possess excellent moisturizing, skin barrier repair, and whitening effects. Studies have shown that green tea polysaccharides can significantly inhibit melanin production, suppress matrix metalloproteinase-1 (MMP-1) expression, increase skin hydration, and are non-cytotoxic. Furthermore, the combination of green tea polysaccharides and matsutake mushroom extract can synergistically inhibit skin inflammation and oxidation processes, exerting anti-aging effects. Non-catechin tea extracts can also exert whitening effects through the ERK-dependent MITF downregulation pathway, suggesting that non-catechin components such as tea polysaccharides also contribute to whitening efficacy. Third, the expected basis for synergistic effects. In this application, the steam-fried Anji white tea extract is rich in EGCG and theanine, while tea polysaccharides and sodium hyaluronate are both polysaccharides. Studies have shown that EGCG and polysaccharides can form complexes through hydrogen bond interactions, improving the stability and bioavailability of the active ingredients. Simultaneously, tea polysaccharides and sodium hyaluronate have a synergistic moisturizing effect, enhancing the skin barrier repair effect. Based on this, those skilled in the art can reasonably expect that the combination of the above-mentioned components will have synergistic antioxidant, whitening, and barrier repair effects, achieving a technical effect of "1+1>2". Fourth, sodium hyaluronate, glycerin, and butylene glycol provide instant hydration, forming a multi-layered skincare system with the active ingredients. Fifth, the composition is safe, mild, and non-irritating, making it suitable for sensitive skin. The steam explosion treatment increases the extraction rate of phenolic substances and significantly enhances antioxidant activity, demonstrating the high efficacy of the steam-exploded Anji white tea extract. Sixth, utilizing the summer and autumn tea resources of Anji white tea to achieve high-value utilization aligns with the concept of green environmental protection. Detailed Implementation The present invention will now be described in detail with reference to specific embodiments. Example 1: Preparation of steam-exploded Anji white tea extract 1000g of fresh leaves from Baiye No. 1 summer and autumn tea were taken, impurities were removed, and the leaves were naturally spread out at 35℃ for 2 hours to achieve a moisture content of 35%. The adjusted tea leaves were placed in a steam explosion device and pressurized at 0.6MPa for 180 seconds, followed by instantaneous pressure release and explosion to obtain steam-exploded wet material. The steam-exploded wet material was added to deionized water at a material-to-liquid ratio of 1:15, and extracted at 60℃ for 60 minutes. The extract was filtered and collected. The extract was centrifuged at 4000r / min for 15 minutes, and the supernatant was collected. The supernatant was passed through a nanofiltration membrane with a molecular weight cutoff of 100Da and concentrated at 45℃ until the solid content was ≥5%. The extract was then freeze-dried to obtain steam-exploded Anji white tea extract. Testing showed that the cell wall breakage rate was ≥99.9%, the EGCG content was ≥5%, and theanine content was ≥2%. Example 2: Anti-aging, Repairing, and Whitening Essence Take 5 parts of the steam-exploded Anji white tea extract, 2 parts of tea polysaccharide, 0.5 parts of sodium hyaluronate, 5 parts of glycerin, and 5 parts of butylene glycol prepared in Example 1, add deionized water to 100 parts, stir evenly, adjust the pH to 5.5, filter, sterilize, and fill to obtain an anti-aging, repairing, and whitening essence. Example 3: Anti-aging, Repairing, and Whitening Emulsion Take 3 parts of the steam-fried Anji white tea extract prepared in Example 1, 1 part of tea polysaccharide, 0.3 parts of sodium hyaluronate, 4 parts of glycerin, 4 parts of butylene glycol, 5 parts of caprylic / capric triglyceride, 2 parts of stearyl alcohol, 2 parts of glyceryl monostearate, and 1 part of Tween-80, add deionized water to 100 parts, emulsify and homogenize to obtain an anti-aging, repairing, and whitening emulsion. Example 4: Anti-aging, Repairing, and Whitening Face Cream Take 8 parts of the steam-fried Anji white tea extract, 3 parts of tea polysaccharide, 1 part of sodium hyaluronate, 6 parts of glycerin, 6 parts of butylene glycol, 5 parts of shea butter, 3 parts of cetearyl alcohol, and 2 parts of glyceryl stearate prepared in Example 1, add deionized water to 100 parts, emulsify and homogenize to obtain an anti-aging, repairing, and whitening face cream. Efficacy Analysis 1. Antioxidant efficacy analysis The composition of this application contains steam-exploded Anji white tea extract, which undergoes steam explosion pretreatment, resulting in a cell wall breakage rate of ≥99.9% and is rich in EGCG (content ≥5%), thus possessing a good foundation for antioxidant activity. EGCG is a recognized potent antioxidant that can effectively scavenge free radicals and reduce oxidative stress damage to the skin. 2. Whitening Efficacy Analysis According to literature reports, tea catechins such as EGCG, ECG, and GCG can significantly inhibit tyrosinase activity and melanin synthesis by downregulating the cAMP / CREB / MITF signaling pathway, with inhibitory effects superior to traditional whitening agents such as arbutin (Zhang et al., 2020). Furthermore, green tea polysaccharides can significantly inhibit melanin production (CN102088953B), and tea extracts without catechins can also exert whitening effects through an ERK-dependent MITF downregulation pathway (Kim et al., 2019). In the composition of this application, the steam-fried Anji white tea extract is rich in EGCG, and tea polysaccharides also have whitening effects; the combination of the two can exert a synergistic whitening effect. 3. Analysis of Skin Barrier Repair Efficacy According to literature reports, green tea polysaccharides can significantly increase skin hydration and inhibit matrix metalloproteinase-1 (MMP-1) expression (CN102088953B). Sodium hyaluronate is a recognized moisturizing and repairing ingredient, and its combination with tea polysaccharides can synergistically enhance the barrier repair effect. The combination of tea polysaccharides and sodium hyaluronate in the composition of this application has good potential for skin barrier repair. 4. Security Analysis According to literature reports, green tea polysaccharides have no cytotoxicity in the concentration range of 0.1-10 μg / mL (CN102088953B). Sodium hyaluronate, glycerin, and butylene glycol are all safe raw materials widely used in the cosmetics industry and meet the requirements of the "Cosmetic Safety Technical Specifications". The ingredients selected for the composition in this application all have good safety records. Differences from existing technologies | Comparison Items | CN102088953B | US8835404 | CN111759761A | This Invention | | Tea Extract Source | Green Tea Polysaccharides | Green Tea Polysaccharides | White Tea Extract + Theanine + Tea Polysaccharides + Tea Polyphenols | Steamed Anji White Tea Extract (EGCG + Theanine + Tea Polysaccharides) | | Cell wall disruption rate | Untreated | Untreated | Untreated | ≥99.9% | | Active ingredient retention rate | Not mentioned | Not mentioned | Not mentioned | Theanine retention rate ≥90% | | Synergistic Ingredients | Single or Polysaccharide + Others | Single or Polysaccharide + Others | Theanine + Tea Polyphenols + Tea Polysaccharides + Bifida Ferment Lysate | Tea Polysaccharides + Sodium Hyaluronate | | Efficacy | Whitening + Moisturizing + Anti-wrinkle | Whitening + Moisturizing + Anti-wrinkle | Antioxidant + Anti-radiation + Detoxification | Anti-aging + Repair + Whitening (Multi-target) | | Processing Technology | Hot Water Extraction + Ultrafiltration + Alcohol Precipitation | Hot Water Extraction + Ultrafiltration + Alcohol Precipitation | Conventional Extraction | Steam Explosion Pretreatment | References [1] Gao Chang, Zhang Tingzhi, Yan Shaowei, et al. Application of black tea polysaccharides in the preparation of anti-stress products: CN115715747A[P]. 2023-02-28. [2] Zhang X, Li J, Li Y, et al. Anti-melanogenic effects of epigallocatechin-3-gallate (EGCG), epicatechin-3-gallate (ECG) and gallocatechin-3-gallate (GCG) via down-regulation of cAMP / CREB / MITF signaling pathway in B16F10 melanoma cells[J]. Fitoterapia, 2020, 145: 104634. [3] Quan Chunxiang, Lian Mingxun, Jin Deji, et al. Preparation method of green tea polysaccharide and cosmetic composition containing said polysaccharide for skin whitening, moisturizing and anti-wrinkle effects: CN102088953B[P]. 2014-09-17. [4] Kumar S, Singh N, Shweta, et al. Green tea polyphenols: versatilecosmetic ingredient[J]. International Journal of Advanced Research inPharmaceutical&Bio Sciences, 2012, 1(4). [5] Kang CK, Cho SA, Kim JH, et al. Anti-inflammatory and antioxidant cosmetic composition containing green tea polysaccharide and tricholoma matsutake extract: US8852655[P]. 2014-10-07. [6] Yang Qingxin, Huang Jianan, Liu Zhonghua, et al. A white tea facial mask containing theanine and its preparation method: CN111759761A[P]. 2020-10-13. [7] Kim D, Park NH, Hwang JA, et al. Camellia sinensis leafextracts lacking catechins exert depigmentary effects through ERK-dependent, MiTF-mediated tyrosinase downregulation in melan-a cells and a human skinequivalent[J]. Archives of Biological Sciences, 2019, 71(3): 483-488. [8] Quan Chunxiang, Lian Mingxun, Jin Deji, et al. Method for preparing polysaccharide of green tea and cosmetic composition for skin whitening, moisturization and anti-wrinkle effects comprising the polysaccharide: US8835404[P]. 2014-09-16.

Claims

1. A steam-exploded Anji white tea anti-aging, repairing, and whitening composition, characterized in that, It contains the following components in parts by weight: Steam-exploded Anji white tea extract: 1-10 parts; Tea polysaccharides: 0.5-5 parts; Sodium hyaluronate: 0.1-2 parts; Glycerin: 2-8 parts; Butylene glycol: 2-8 parts; Acceptable carrier in cosmetics: excess.

2. The composition according to claim 1, characterized in that, The steam-exploded Anji white tea extract is prepared by the following method: Fresh leaves of Baiye No. 1 summer and autumn tea were pretreated by steam explosion. The pressure was maintained at 0.6-0.8 MPa for 120-180 seconds to obtain steam-exploded wet material. The steam-exploded material was then extracted with water at 50-70℃, filtered, concentrated, and dried to obtain steam-exploded Anji white tea extract with a cell wall breakage rate ≥99.9%, EGCG content ≥5%, and theanine content ≥2%.

3. The composition according to claim 1, characterized in that, The tea polysaccharide is a tea polysaccharide recovered from the waste liquid extracted from steam-exploded Anji white tea, with a purity of ≥60%.

4. The composition according to claim 1, characterized in that, Acceptable carriers for cosmetics include emulsifiers, thickeners, preservatives, and deionized water.

5. The composition according to claim 1, characterized in that, The composition is in the form of a serum, lotion, cream, or mask.

6. A steam-exploded Anji white tea anti-aging, repairing, and whitening essence, characterized in that, It comprises the composition according to any one of claims 1-5.

7. A steam-exploded Anji white tea anti-aging, repairing, and whitening lotion, characterized in that, It comprises the composition according to any one of claims 1-5.

8. A steam-exploded Anji white tea anti-aging, repairing, and whitening face cream, characterized in that, It comprises the composition according to any one of claims 1-5.

9. A steam-exploded Anji white tea anti-aging, repairing, and whitening facial mask, characterized in that, It comprises the composition according to any one of claims 1-5.

10. The use of the composition according to any one of claims 1-5 in the preparation of skin care products having antioxidant, anti-inflammatory, whitening, and skin barrier repair functions.