Tea-preservative composition with effects of removing yellowness, brightening and preventing corrosion and application of tea-preservative composition

Abstract

The invention relates to a tea-preservative composition with effects of removing yellowness, brightening and preventing corrosion and application of the tea-preservative composition, and belongs to the technical field of cosmetics. The tea-preservative composition disclosed by the invention is prepared from the following components in parts by mass: 3 to 6 parts of tea saponin, 1 to 2 parts of cortex magnoliae officinalis extract and 0.5 to 1 part of raw grass-containing extract. The tea saponin and the mangnolia officinalis bark extract are used as auxiliary preservatives, so that preservatives similar to phenoxyethanol and non-traditional preservatives such as acetophenone can be reduced, safe corrosion prevention is realized, harmful bacteria are effectively inhibited, stimulation sources are reduced, and the safety is high. And by compounding the two, the content of magnolia officinalis can be reduced, the cost is reduced, and the effect is enhanced. The tea saponin, the mangnolia officinalis extract and the raw grass root-containing extract can synergistically resist oxidation after being combined, and meanwhile, can remove yellow smell on the skin to achieve a whitening effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and in particular to a tea-preservative composition having the functions of removing yellowing, brightening and preventing corrosion, and an application thereof. Background Art

[0002] Chinese people naturally have a yellowish complexion. In Traditional Chinese Medicine (TCM), a sallow complexion is often considered a sign of insufficient Qi and blood, and a weak spleen and stomach (e.g., "spleen deficiency causes yellow complexion"). Modern perceptions also associate a dull, sallow complexion with "sub-health." Therefore, removing sallow skin is not just about aesthetics; it also implies a commitment to physical health. Currently, efforts to remove sallow skin primarily focus on melanin and anti-glycation. However, recent research has confirmed that proteins in Asian skin are prone to the Maillard reaction, leading to a persistent yellowish complexion. Daily use of whitening products has been ineffective in removing sallow skin.

[0003] Excessive use of chemical preservatives in cosmetics can easily cause skin irritation, while lower levels can lead to excessive microbial contamination. Therefore, using natural compound chemical preservatives can achieve both effective preservation and a safe and secure skincare experience. Some natural plant extracts have a certain degree of antiseptic effect and also offer skincare benefits such as whitening and antioxidant properties. However, their extraction costs are high, and some natural plant extracts have complex ingredients, making it difficult to achieve a superior skincare experience when combined. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a tea-preservative composition having the functions of removing yellowing, brightening and preventing corrosion and its application.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a tea-preservative composition comprising the following components in parts by weight: 3-6 parts of tea saponin, 1-2 parts of magnolia bark extract, and 0.5-1 part of a herbaceous plant extract.

[0007] The present invention selects tea saponin, magnolia bark extract and herb extract in a specific component ratio to form a tea-antiseptic composition which has whitening and yellowing effects, can inhibit harmful bacteria and has an antiseptic effect.

[0008] Tea saponin is a pentacyclic triterpenoid saponin composed of a saccharide, a ligand, and an organic acid. It is a natural surfactant extracted from the seeds, roots, and stems of the Camellia family. It appears as a pale yellow to brown powder or liquid and exhibits excellent emulsifying, dispersing, foaming, and foam stabilizing properties. It also possesses antibacterial, anti-inflammatory, and antioxidant activities.

[0009] Herba scutellariae is a common plant whose extracts contain a variety of active ingredients, such as flavonoids and polysaccharides. These ingredients impart antioxidant, moisturizing, and soothing properties to herba scutellariae extracts. For example, the flavonoids in herba scutellariae exhibit strong antioxidant properties, scavenging free radicals and reducing oxidative damage. Facial skincare products containing herba scutellariae extracts have demonstrated moisturizing, anti-aging, anti-inflammatory, anti-wrinkle, antioxidant, and blue light protection benefits.

[0010] Magnolia officinalis bark extract, primarily containing lignans such as magnolol, has antibacterial, anti-inflammatory, antioxidant, and sedative properties. In cosmetics, it can inhibit the growth of harmful microorganisms like Propionibacterium acnes and reduce skin inflammation. It also offers anti-aging benefits, helping to reduce wrinkles and promote smoother, more refined skin. Some shampoo and facial products, such as those for acne treatment, sensitive skin care, photoaging, oil control, and antibacterial and antiseptic properties, also contain magnolia officinalis bark extract.

[0011] As a preferred embodiment of the tea-preservative composition of the present invention, in the tea-preservative composition, the mass ratio of the total mass of the tea saponin and Magnolia bark extract to the herb extract is 6:0.8.

[0012] Furthermore, the mass ratio of tea saponin to Magnolia bark extract is (2-5):1.

[0013] Preferably, the tea-preservative composition comprises the following components in parts by mass: 5 parts of tea saponin, 1 part of Magnolia bark extract and 0.8 parts of Herba Cibotii extract.

[0014] Within the preferred ratio range, the tea-antiseptic composition of the present invention has better yellowing removal and antiseptic technical effects.

[0015] In a second aspect, the present invention provides the use of the tea-preservative composition in the preparation of antioxidant and / or whitening products.

[0016] In a third aspect, the present invention provides use of the tea-preservative composition in the preparation of an antibacterial product.

[0017] Furthermore, the type of bacteria includes at least one of molds, yeasts, heat-resistant Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa.

[0018] In a fourth aspect, the present invention provides a cosmetic comprising the tea-preservative composition.

[0019] Furthermore, it also includes cosmetic accessories.

[0020] Furthermore, the cosmetic excipients also include at least one of a moisturizer, a solvent and an emulsifier.

[0021] Furthermore, the moisturizer includes at least one of dipropylene glycol, glycerin and caprylic / capric triglyceride; the solvent includes butylene glycol and / or deionized water; and the emulsifier includes laureth-23.

[0022] Furthermore, the cosmetic comprises the following components in parts by mass: 3 to 6 parts of dipropylene glycol, 2 to 10 parts of butylene glycol, 3 to 6 parts of glycerin, 1 to 3 parts of laureth-23, 1 to 6 parts of caprylic / capric triglyceride, 4.5 to 9 parts of the tea-preservative composition and the balance water.

[0023] Preferably, the cosmetic comprises the following components in parts by mass: 5 parts of dipropylene glycol, 10 parts of butylene glycol, 3 parts of glycerin, 2.5 parts of laureth-23, 5 parts of caprylic / capric triglyceride, 6.8 parts of the tea-preservative composition and 67.7 parts of water.

[0024] In a fifth aspect, the present invention provides a method for preparing the cosmetic, comprising the following steps:

[0025] S1: Mix tea saponin and dipropylene glycol, stir and dissolve at 40-50°C to obtain a tea saponin dipropylene glycol solution;

[0026] S2: Adjust the temperature of deionized water to 60-70°C, add butanediol and glycerol, stir, and fully dissolve to form an aqueous phase;

[0027] S3: Adjust the temperature of caprylic / capric triglyceride and laureth-23 to 70-80° C. and mix them evenly to form an oil phase;

[0028] S4: mixing the aqueous phase from step S2 and the oil phase from step S3, stirring and homogenizing to obtain a microemulsion essence;

[0029] S5: Cool the microemulsion essence to 30-40° C., add the tea saponin dipropylene glycol solution, Magnolia bark extract and Herba Menthae extract prepared in step S1, stir and homogenize, and adjust the pH to 4.5-6.5 to obtain the cosmetic.

[0030] Furthermore, in step S2, the stirring time is 10 to 25 minutes, preferably 10 minutes.

[0031] Preferably, in step S2, the temperature is 70°C.

[0032] Preferably, in step S3, the temperature is 70°C.

[0033] Furthermore, in step S4, homogenization is performed at 2500-4000 rpm for 8-25 minutes.

[0034] Preferably, in step S4, homogenization is performed at 3500 rpm for 10 min.

[0035] Preferably, in step S5, the temperature is 40°C.

[0036] Furthermore, in step S5, homogenization is performed at 1000-3000 rpm for 3-10 minutes.

[0037] Preferably, in step S5, homogenization is performed at 2800 rpm for 5 minutes.

[0038] Furthermore, in step S5, citric acid or sodium hydroxide solution can be used to adjust the pH.

[0039] Furthermore, the stirring speed in steps S1 to S5 may be 300 to 500 rpm, preferably 500 rpm.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. Tea saponin and Magnolia officinalis bark extract serve as auxiliary preservatives, reducing the use of preservatives like phenoxyethanol and non-traditional preservatives such as cinnamone, achieving safe preservation, effectively inhibiting harmful bacteria, reducing irritants, and achieving high safety. By combining the two, the content of Magnolia officinalis can also be reduced, reducing costs and increasing efficiency.

[0042] 2. The combination of tea saponin, magnolia bark extract and herb root extract can synergistically resist oxidation, while removing yellowness from the skin and achieving a whitening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The essence prepared in Application Example 1.

[0044] Figure 2 This is a diagram showing the antioxidant effect. DETAILED DESCRIPTION

[0045] To better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below with reference to specific examples. Other materials, reagents, etc. used in the examples, unless otherwise specified, can be obtained from commercial sources.

[0046] Tea saponin, powder with a mass concentration of 98%, was purchased from Xi'an Hongtaiyuan Biotechnology Co., Ltd.

[0047] Magnolia bark extract was purchased from Guangzhou Hengyue Biotechnology Co., Ltd.

[0048] The extract of Herba Congenitae was purchased from Guangzhou Hengyue Biotechnology Co., Ltd.

[0049] Aescin was purchased from Shaanxi Haochen Biotechnology Co., Ltd.

[0050] Centella asiatica extract was purchased from Guangzhou Snoco Biotechnology Co., Ltd.

[0051] Mulberry leaf extract was purchased from Xi'an Changhe Pharmaceutical Co., Ltd.

[0052] Examples 1 to 3 and Comparative Examples 1 to 10

[0053] The components (parts by mass) of the tea-preservative compositions of Examples 1 to 3 and Comparative Examples 1 to 10 are shown in Table 1.

[0054] Table 1

[0055]

[0056]

[0057] Test Example 1

[0058] The tea-preservative compositions of Examples 1 to 3 and Comparative Examples 1 to 10 were tested in accordance with the microbiological testing methods in Chapter 5 of the "Technical Specifications for Safety of Cosmetics" (2015 edition). The test items / clauses and the judgment basis requirements are shown in Table 2.

[0059] Table 2

[0060]

[0061] Table 3 shows the microbial results. Using tea saponin, Magnolia bark extract, or Herba scutellariae extract alone, or in any combination of any two of these ingredients, failed microbial testing and demonstrated poor antibacterial efficacy. However, combining tea saponin, Magnolia bark extract, and Herba scutellariae extract achieved superior antibacterial efficacy. Furthermore, combining tea saponin and Magnolia bark extract with conventional preservatives such as p-hydroxyacetophenone or phenoxyethanol also yielded satisfactory microbial testing results, demonstrating that the combination of tea saponin, Magnolia bark extract, and Herba scutellariae extract can achieve antibacterial efficacy comparable to that achieved by conventional chemical preservatives.

[0062] Table 3

[0063] Test results Example 1 qualified Example 2 qualified Example 3 qualified Comparative Example 1 Unqualified Comparative Example 2 Unqualified Comparative Example 3 Unqualified Comparative Example 4 Unqualified Comparative Example 5 Unqualified Comparative Example 6 Unqualified Comparative Example 7 qualified Comparative Example 8 qualified Comparative Example 9 qualified Comparative Example 10 qualified Comparative Example 11 Unqualified Comparative Example 12 Unqualified Comparative Example 13 Unqualified

[0064] Example 4, Comparative Examples 14 to 21

[0065] The components (parts by mass) of the tea-preservative compositions of Example 4 and Comparative Examples 14 to 21 are shown in Table 4.

[0066] Table 4

[0067]

[0068]

[0069] Application Examples 1 to 4 and Comparative Application Examples 11 to 21

[0070] Essences were prepared according to the tea-preservative compositions of Examples 1 to 4 and Comparative Examples 11 to 21.

[0071] In each application example and comparative application example, the mass percentage of the tea-preservative composition in the essence is shown in Table 5.

[0072] Table 5

[0073] Application Examples Tea-preservative composition containing Amount of tea-preservative composition added (mass percentage) Application Example 1 Example 1 6.8％ Application Example 2 Example 2 9％ Application Example 3 Example 3 4.5％ Application Example 4 Example 4 6.8％ Comparative Application Example 11 Comparative Example 11 6.8％ Comparative Application Example 12 Comparative Example 12 6.8％ Comparative Application Example 13 Comparative Example 13 6.8％ Comparative Application Example 14 Comparative Example 14 6.8％ Application Comparative Example 15 Comparative Example 15 6.8％ Application Comparative Example 16 Comparative Example 16 6.8％ Application Comparative Example 17 Comparative Example 17 6.8％ Application Comparative Example 18 Comparative Example 18 6.8％ Comparative Application Example 19 Comparative Example 19 6.8％ Comparative Application Example 20 Comparative Example 20 6.8％ Comparative Application Example 21 Comparative Example 21 6.8％

[0074] The formula of the essence prepared by the tea-preservative composition is shown in Table 6.

[0075] Table 6

[0076]

[0077]

[0078] The preparation method of the essence is as follows:

[0079] (1) Pretreatment of tea saponin: Add tea saponin powder to dipropylene glycol, stir and heat to 40-50°C to fully dissolve it to obtain tea saponin dipropylene glycol solution.

[0080] (2) Preparation of aqueous phase: Heat deionized water to 70°C, add butanediol and glycerol, and stir at a speed of 500 rpm for 10 min to fully dissolve them to form an aqueous phase.

[0081] (3) Preparation of oil phase: Heat caprylic / capric triglyceride and laureth-23 to 70°C and mix well to form an oil phase.

[0082] (4) Emulsification process: After slowly adding the oil phase to the water phase, stir at 500 rpm and then homogenize at 3500 rpm for 10 min to form a stable microemulsion essence.

[0083] (5) Adding the active phase: Cool the microemulsion essence to 40°C, add the pre-treated tea saponin dipropylene glycol solution, Magnolia bark extract and raw extract, stir evenly at 500rpm to fully dissolve, and homogenize at 2800rpm for 5 minutes to ensure that the microemulsion essence is fine and uniform.

[0084] (6) Adjustment and testing: The pH value of the microemulsion essence is tested to ensure that it is between 4.5 and 6.5. If it does not meet the requirements, an appropriate amount of citric acid or sodium hydroxide solution can be added to adjust it to obtain a tea-preservative composition essence.

[0085] (7) Packaging: Pour the essence into the packaging container and seal it for storage.

[0086] (8) After passing the central control inspection, the material is filtered out.

[0087] Wherein, the essence prepared by using Example 1 is as follows Figure 1 shown.

[0088] Application Comparative Example 22

[0089] During the preparation of the essence, the tea saponin powder was not pretreated and was directly added in step (5). Other methods and contents were the same as those in Application Example 1 to prepare the essence.

[0090] Test Example 2 Antioxidant Experiment

[0091] The tea-preservative compositions of Examples 1 to 4 and Comparative Examples 11 to 21 were tested for their antioxidant properties.

[0092] Prepare 0.2 mM DPPH solution (1,1-diphenyl-2-trinitrophenylhydrazine, C 18 H 12 N5O6): Weigh 0.007875 g of DPPH powder and dissolve it in 100 mL of anhydrous ethanol to prepare 0.2 mM DPPH;

[0093] Prepare vitamin C (VC) solution (positive control group): dilute VC to 0.02 mg / mL with deionized water and place in a brown bottle for later use.

[0094] Test samples: The tea-preservative compositions of Examples 1 to 4 and Comparative Examples 11 to 21 were dissolved in water to prepare sample solutions. In each sample solution, the total mass of each composition and water was 100 parts.

[0095] Instruments and equipment: analytical balance (accurate to 0.001 g), ultrasonic cleaning machine, UV-visible spectrophotometer.

[0096] Divide the sample into four tubes and add samples in sequence according to Table 7. After mixing the solutions in each tube, incubate in the dark at room temperature for 30 minutes. Measure the absorbance at 517 nm using distilled water, adjust the wavelength to zero, and record the data. (When processing data, ensure that the absolute difference between two independent measurements under repeatable conditions does not exceed 10% of the arithmetic mean.) Calculate the clearance rate (P) based on the absorbance value:

[0097] P=[1-(T-T0) / (C-C0)]×100%,

[0098] Where T is the absorbance of the sample tube, i.e., the absorbance of the solution after the test sample reacts with DPPH; T0 is the background absorbance of the test sample; C is the absorbance of the DPPH tube, i.e., the absorbance of the DPPH solution without the test sample; and C0 is the background absorbance of the solvent (anhydrous ethanol). A higher scavenging rate indicates stronger antioxidant performance.

[0099] Table 7

[0100]

[0101] The results of the antioxidant performance test are shown in Table 8 and Figure 2 As shown, it can be seen that the antioxidant properties of the tea-preservative compositions of Examples 1 to 4 are similar to that of the positive control group, and are significantly better than those of other comparative examples.

[0102] Table 8

[0103]

[0104]

[0105] Test Example 3: Brightening and Anti-yellowing of the Human Body

[0106] 75 volunteers aged 35 to 60 years old, all of whom had a need for skin brightening and yellowing removal, were selected and divided into 15 groups, with 5 people in each group. The essences prepared in Example 1 to 4 and Comparative Examples 11 to 21 were used as the experimental group, and the carnosine essence was used as the comparison group. The carnosine essence was prepared by replacing the tea-preservative composition in the essence prepared in Example 1 with carnosine of the same mass (content).

[0107] Each group of volunteers applied the product once every morning and evening after cleansing their faces for four consecutive weeks. In the second and fourth weeks, the volunteers were surveyed on the effectiveness of the product through questionnaires.

[0108] The effectiveness evaluation criteria are shown in Table 9 below.

[0109] Table 9

[0110] Effectiveness Evaluation Criteria Very effective Within 2 weeks and 4 weeks of use, the brightening and yellowing effects are obvious efficient Within 2 weeks of use, it has brightening and anti-yellowing effects generally Within 4 weeks of use, the brightening and yellowing effect is average invalid Within 4 weeks of use, the brightening and yellowing effect is not obvious

[0111] The brightening and yellowing-removing effects of different essences are shown in Table 10 below. The essences prepared using Examples 1 to 4 have significant brightening and yellowing-removing effects, which are better than the essences prepared using the other comparative examples.

[0112] Table 10

[0113]

[0114]

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A tea-preservative composition, characterized in that The invention comprises the following components in parts by weight: 3-6 parts of tea saponin, 1-2 parts of magnolia bark extract and 0.5-1 part of herbaceous grass extract.

2. The tea-preservative composition according to claim 1, wherein The mass ratio of the total mass of tea saponin and magnolia bark extract to that of the herb extract is 6:0.

8.

3. The tea-preservative composition according to claim 2, wherein The mass ratio of tea saponin to Magnolia bark extract is (2-5):

1.

4. The tea-preservative composition according to claim 3, wherein The tea-preservative composition comprises the following components in parts by mass: 5 parts of tea saponin, 1 part of magnolia bark extract and 0.8 parts of herbaceous sedge extract.

5. Use of the tea-preservative composition according to any one of claims 1 to 4 in the preparation of antioxidant and / or whitening products.

6. Use of the tea-preservative composition according to any one of claims 1 to 4 in the preparation of an antibacterial product.

7. The use according to claim 6, characterized in that The type of bacteria includes at least one of molds, yeasts, heat-resistant Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa.

8. A cosmetic, characterized in that: The cosmetic contains the tea-preservative composition according to any one of claims 1 to 4.

9. The cosmetic according to claim 8, wherein Also includes cosmetic accessories.

10. The method for preparing the cosmetic according to claim 8 or 9, characterized in that: The following steps are involved: S1: Mix tea saponin and dipropylene glycol, stir and dissolve at 40-50°C to obtain a tea saponin dipropylene glycol solution; S2: Adjust the temperature of deionized water to 60-70°C, add butanediol and glycerol, stir, and fully dissolve to form an aqueous phase; S3: Adjust the temperature of caprylic / capric triglyceride and laureth-23 to 70-80° C. and mix them evenly to form an oil phase; S4: mixing the aqueous phase from step S2 and the oil phase from step S3, stirring and homogenizing to obtain a microemulsion essence; S5: Cool the microemulsion essence to 30-40° C., add the tea saponin dipropylene glycol solution, Magnolia bark extract and Herba Menthae extract prepared in step S1, stir and homogenize, and adjust the pH to 4.5-6.5 to obtain the cosmetic.

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