High-stability cold handmade soap containing fermentation triglycoside of liquorice, astragalus membranaceus and scutellaria baicalensis and preparation method of high-stability cold handmade soap

Abstract

The invention relates to the field of daily cleaning and skin care, and aims to prepare the high-stability cold handmade soap which is adaptive to multiple skin types and has the effects of cleaning, skin care, antibiosis and soothing by focusing on animal fat optimization, water phase precise control and triglycoside fermentation technologies. In the background technology, the cold-made handmade soap retains natural active ingredients at low temperature, which is a natural skin care mainstream, but has pain points: the proportion of grease is unreasonable, and 2-3 kinds of grease are difficult to balance cleaning and moisturizing due to compounding; traditional Chinese medicine components have many defects in an adding mode, are non-uniform in dispersion, low in utilization rate and high in irritation risk; natural components are easy to oxidize during storage, and the efficacy is obviously attenuated within the shelf life. The problems of existing cold soap are solved, and the cold soap is prepared by taking composite grease as a base material, compounding with a traditional Chinese medicinal material fermentation extract and carrying out a cold process. By means of grease-water phase two-way regulation (animal grease accounts for 50-60%, and the total moisture is accurately controlled), a triglycoside synergistic antibacterial system (bacillus subtilis ferments medicinal materials in a specific proportion, and triglycoside synergistically inhibits bacteria) and supramolecular wrapping (reverse micelle wraps active matter, and the bacteriostatic activity retention rate in 6 months is larger than or equal to 90%), cleaning and moisturizing balance is achieved, the effects of traditional Chinese medicine are fully exerted, and the product quality is improved. And the process is natural and environment-friendly and is worthy of popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of daily cleansing and skin care, and specifically to a cold-processed handmade soap that is prepared through optimization of the proportion of animal fats and oils, precise control of the water phase, and triglycoside fermentation technology. The soap has high stability, cleansing and skin care, antibacterial and soothing effects (glycyrrhizic acid inhibits bacteria, astragaloside IV repairs, and baicalin resists and resists), and is suitable for a variety of skin types. Background Art

[0002] Cold-processed handmade soap uses a low-temperature process (usually ≤45°C) throughout the entire process, eliminating the need for high-temperature heating. This allows it to retain the natural active ingredients (such as vitamins, fatty acids, and other nutrients) in oils and additives to the greatest extent possible. Compared to industrial hot-processed soap, it offers more natural skincare advantages and has become one of the mainstream products in the natural skincare market in recent years. However, existing cold-processed handmade soaps still face many technical pain points in practical applications, as follows:

[0003] (1) Unreasonable oil and fat ratio leads to functional imbalance. The core functions of cold-process soap (cleansing power, moisturizing power, mildness) mainly depend on the fatty acid composition of the oil:

[0004] 1. Coconut oil is rich in lauric acid, which has strong cleaning power, but excessive degreasing can easily lead to dry skin;

[0005] 2. Olive oil contains a lot of oleic acid, which has excellent moisturizing properties but weak cleaning power;

[0006] 3. Animal fats (such as butter and mutton fat) can increase the hardness of the soap, but using them alone can easily make the soap thick and the foam less fine;

[0007] 4. Existing cold-process soaps often use only two or three oils, making it difficult to strike a balance between cleansing and moisturizing. For example, cold-process soaps for dry skin often lack cleansing power due to a reduced proportion of coconut oil, while products for oily skin often cause skin tightening due to a high proportion of coconut oil.

[0008] (2) Low utilization rate and poor stability of Chinese herbal medicine ingredients

[0009] To enhance the skincare benefits of cold-process soap, some products add Chinese medicinal herbs (such as licorice, astragalus, ginseng, etc.). However, the existing addition method has obvious drawbacks:

[0010] 1. When adding Chinese herbal medicine powder directly, due to the large particle size of the powder (usually ≥100 mesh), it is difficult to disperse evenly in the low-temperature saponification system of cold-process soap, which easily leads to precipitation or mottled soap body, affecting the appearance and feel of use;

[0011] 2. When Chinese herbal medicine extracts are prepared by water extraction or alcohol extraction, the active ingredients in the Chinese herbal medicines (such as glycyrrhizic acid and ginsenosides) are mostly macromolecular substances with low solubility in the oil-alkali system of cold soap making. In addition, the unconverted components are easily combined with fatty acids to form precipitation, resulting in insufficient utilization of the active ingredients.

[0012] 3. The dispersion of ingredients is poor under the cold process. The saponification reaction of cold-processed soap is carried out at a low temperature (38-40°C). Compared with the high temperature environment of hot-processed soap, the reaction rate of oil and alkali solution is slower, and the viscosity of the system increases quickly (that is, the "trace" state appears early). If solid or high-concentration liquid ingredients (such as Chinese herbal medicine extracts) are added at this time, the lack of fluidity of the soap solution may lead to uneven dispersion of ingredients, forming local high-concentration areas, which not only affects the stability of efficacy, but may also cause skin sensitivity due to the residual local irritating ingredients (such as unsaponified alkali);

[0013] 4. The activity of antibacterial ingredients decreases significantly during storage, and the natural activity is not retained enough. The natural ingredients of cold-processed soap (such as unsaturated fatty acids in oils and fats, and polyphenols in traditional Chinese medicine) are easily oxidized under light and high temperature (>30°C), causing the soap to become rancid and darken in color, accompanied by a decrease in antioxidant efficacy. In the existing technology, most cold-processed soaps have not optimized their formulas to address this problem, resulting in a significant decrease in the product's efficacy during the shelf life (usually 6-12 months). Summary of the Invention

[0014] The present invention aims to solve the problems of unbalanced oil and fat ratios, low utilization rate of traditional Chinese medicine ingredients, and poor activity stability in existing cold-processed soaps, and to provide a cold-processed handmade soap that balances cleansing and moisturizing and fully utilizes the efficacy of traditional Chinese medicine. The present invention adopts a cold-processing process, with composite oils such as coconut oil, animal fats, sunflower oil, sweet almond oil, grape seed oil, and sea buckthorn oil as the base material, and compounded with fermented extracts of traditional Chinese medicines such as licorice, astragalus, and astragalus, which are mixed at low temperature and naturally saponified and matured. The cold-processing and low-temperature characteristics prevent high temperatures from destroying the natural nutrients of oils and the activity of fermented extracts. Through the synergistic effect of oils and fermented ingredients, the finished foam is delicate and gentle, cleansing while retaining more natural active substances, and moisturizing for a long time; and the fermented extract can improve the utilization rate of traditional Chinese medicine ingredients and enhance the antibacterial and antioxidant effects. Supramolecular reverse micelle fermentation technology, the antibacterial activity retention rate is ≥90% after 6 months of storage.

[0015] 1. Core Technology Solution

[0016] 1. Oil-water phase two-way regulation:

[0017] -Animal fats (butter / mutton fat) account for 50-60% (30-40 parts), saturated fatty acids (tallow palmitic acid 25-30%) increase hardness to 35-40 Shore A; liquid oils (sunflower oil, sweet almond oil, etc.) adjust skin feel, and the INS value of 140-160 is suitable for different skin types.

[0018] - Precise control of total moisture = 2.3-2.6 times the weight of NaOH, ensuring a saponification rate of ≥95% (free alkali ≤0.1%) and a stable soap body moisture content of 15-20%.

[0019] 2. Synergistic antibacterial system of triterpenoid glycosides:

[0020] Using Bacillus subtilis to ferment Glycyrrhiza-Urticae-Astragali (3:2:1), glycyrrhizic acid (≥2.0%) destroys the cell membrane of pathogenic bacteria, astragaloside (≥0.04%) enhances the skin barrier, and baicalin (≥9.0%) blocks drug-resistant enzymes, all three of which work together to make the staphylococcus aureus inhibition zone ≥16mm.

[0021] 3. Supermolecular encapsulation of active substances: reverse micelle encapsulation of triterpenoid glycoside active substances, with an inhibition activity retention rate of ≥90% after 6 months of storage.

[0022] II. Components and effects:

[0023] DETAILED DESCRIPTION

[0024] Example 1 (mixed skin, 35 parts of beef tallow)

[0025] 1. Compound oil phase (65 parts): coconut oil 12 parts, sunflower oil 18 parts, sweet almond oil 7 parts, grape seed oil 4 parts, sea buckthorn oil 3 parts, beef tallow 35 parts (INS value 150); traditional Chinese medicine fermentation extract 6 parts, lye phase 9 parts (sodium hydroxide 14 g + deionized water 32.2 g), functional additives 1.2 parts (vitamin E 0.3 parts, lavender oil 0.6 parts, glycine 0.3 parts).

[0026] 2. Preparation and performance: melt the beef tallow at 55°C and mix with other oils, and the viscosity is 45 mPa·s at 42°C;

[0027] Dissolve the lye at 28°C, cool to 38°C, then add the oil, and stir at 250 r / min for 40 minutes to the Trace state;

[0028] Mold and stand for 30 hours, mature for 5 weeks at 45% humidity, and the free alkali is 0.08%.

[0029] 3. Performance: hardness 38 Shore A, no cracking after 8 months of storage; inhibition zone of Propionibacterium acnes 16.0mm, and skin moisture content after washing decreases by ≤8%.

[0030] Example 2 (dry skin, 30 parts of mutton tallow)

[0031] 1. Compound oil phase (60 parts): coconut oil 10 parts, sunflower oil 20 parts, sweet almond oil 9 parts, grape seed oil 3 parts, sea buckthorn oil 3 parts, mutton oil 30 parts (INS value 140); traditional Chinese medicine fermented extract 5 parts, alkali solution phase 8 parts (sodium hydroxide 12 g + deionized water 27.6 g), functional additives 0.8 parts (vitamin E 0.4 parts, glycine 0.4 parts).

[0032] 2. Performance: hardness 35 Shore A, post-washing tightness score reduced by 45% (10-point scale); mutton oil enhances moisturizing, skin water content increased by 18%; Staphylococcus aureus inhibition zone 15.1 mm, excellent stability

[0033] Example 3 (oily skin, beef tallow 40 parts)

[0034] 1. Compound oil phase (70 parts): coconut oil 18 parts, sunflower oil 12 parts, sweet almond oil 5 parts, grape seed oil 5 parts, sea buckthorn oil 2 parts, beef tallow 40 parts (INS value 160); traditional Chinese medicine fermented extract 7 parts, alkali solution phase 10 parts (sodium hydroxide 15 g + deionized water 37.5 g), functional additives 2 parts (vitamin E 0.5 parts, tea tree oil 1 part, glycine 0.5 parts).

[0035] 2. Performance: hardness 40 Shore A, 24h water absorption rate 4.5% (moisture resistance); Propionibacterium acnes inhibition zone 17.1 mm, oil control effect improved by 35%; free alkali 0.09% after 6 weeks of maturation, suitable for oily and acne-prone skin.

[0036] Four, beneficial effects

[0037] 1. Triple antibacterial: glycyrrhizic acid destroys pathogenic bacterial cell membranes, astragaloside IV inhibits virulence factors, baicalin blocks beta-lactamase;

[0038] 2. High stability: reverse micelle encapsulation with 6-month activity retention rate ≥ 90%; hardness 35-40 Shore A, durability improved by 20-30%, no cracking and no oil spots after 8 months of storage;

[0039] 3. Universal process: water phase control formula ensures that the free alkali difference between batches is <0.03%, with small batch differences, suitable for large-scale production.

[0040] 4. Efficacy synergy: supermolecular antibacterial system has high and stable inhibition rate on pathogenic bacteria, and also has cleaning, moisturizing, and soothing effects;

[0041] 5. Multi-skin adaptation: dry skin selects mutton oil + high liquid oil to enhance moisturizing, oily skin selects beef tallow + high coconut oil to enhance cleaning;

[0042] Experimental example:

[0043] Referring to QB / T 2738 "Evaluation method of antibacterial and bacteriostatic effect of daily chemical products", the inhibition zone method is used for testing:

[0044]

[0045]

[0046] Physical stability

[0047] index result Hardness (4-6 weeks after aging) 38Shore A Free alkali content ≤0.1％ 8-month peroxide value ≤5meq / kg

Claims

1. A cold-process handmade soap, characterized in that: The invention is composed of the following components in parts by weight: composite oil phase: 60-70 parts (10-18 parts of coconut oil, 12-22 parts of sunflower oil, 5-9 parts of sweet almond oil, 3-5 parts of grape seed oil, 2-4 parts of sea buckthorn oil, 30-40 parts of animal fat); 5-7 parts of triglycoside fermentation extract (aqueous phase, 92-95% water content), prepared by mixing licorice, astragalus, and scutellaria in a weight ratio of 3:2:1 and fermented with Bacillus subtilis; Alkali phase: 8-10 parts (food-grade sodium hydroxide and deionized water in a weight ratio of 1:2.3-2.6); Functional additives: 0.5-2 parts (one or more selected from vitamin E, natural plant essential oils, and amino acid moisturizers); Control conditions: The sum of the weight of water in the fermentation extract and the deionized water in the alkali phase is equal to 2.3-2.6 times the weight of sodium hydroxide.

2. The cold-processed handmade soap according to claim 1, wherein: The INS value of the composite oil phase is 140-160; For dry skin, choose 30-35 parts of mutton fat and 18-22 parts of sunflower oil as animal fats. When adapting to oily skin, the animal fat used should be 35-40 parts of butter and 15-18 parts of coconut oil.

3. The cold-processed handmade soap according to claim 1, wherein: The preparation process of the triglycoside fermentation extract comprises: mixing and grinding licorice, astragalus and scutellaria in a ratio of 3:2:1, adding deionized water at a solid-liquid ratio of 1:10 after sterilization, inoculating 3-5% Bacillus subtilis, fermenting at 32-35°C for 56-72 hours, filtering and sterilizing to obtain the active ingredient (total activity ≥6.0%).

4. The cold-processed handmade soap according to claim 1, wherein: When preparing the alkali liquid phase, the temperature is controlled at 25-30° C., the stirring speed is 100-150 r / min, and after dissolution, it is cooled to 35-40° C. for standby use. The conductivity of the deionized water is ≤10 μS / cm.

5. A method for preparing cold-processed handmade soap as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: (a) preparing an alkaline liquid phase: mixing sodium hydroxide and deionized water in a weight ratio of 1:2.3-2.6, stirring and dissolving at 25-30° C., and cooling to 35-40° C.; (b) Pretreatment of fats: Heat animal fats to 55-60°C to melt, mix with other fats and maintain at 40-45°C, and stir until the viscosity is ≤50 mPa·s; (c) Saponification reaction: Alkali solution is added to the oil at a rate of 5-10 mL / min and stirred at 200-300 rpm until the trace state is reached (the trace lasts for 10-15 seconds without disappearing); (d) adding excipients: adding triglycoside fermentation extract and functional additives, stirring at 150-200 r / min for 5-8 minutes; (e) Molding: Pour the soap solution into a preheated mold at 35°C and let it stand at 20-25°C for 24-48 hours until the hardness reaches ≥30 Shore A; (f) Demolding and aging: aging in a ventilated environment with a humidity of 40-50% for 4-6 weeks until the free alkali content is ≤0.1%.

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