Rice fermentation product filtrate, preparation method thereof and hair care composition containing rice fermentation product filtrate

Abstract

The invention relates to a rice fermentation product filtrate, a preparation method thereof and a hair care composition containing the rice fermentation product filtrate, and the preparation method of the rice fermentation product filtrate comprises the following steps: crushing rice, gelatinizing and saccharifying to obtain a culture medium, inoculating bifidobacterium, lactobacillus and lactic acid bacteria into the culture medium, and naturally fermenting to obtain the rice fermentation product filtrate. Sterilizing the filtrate to obtain a unique rice fermentation product filtrate, and highly concentrating and enriching nutritional ingredients without any dilution; besides, the rice fermentation product filtrate prepared by the method is compounded with the citrus chachiensis extract and the ginger oil, the three components play a synergistic effect, and the obtained hair care composition can remarkably improve the tensile strength and luster of hair, reduce combing force, relieve scalp itching and relieve inflammation.

Description

Technical Field

[0001] This invention belongs to the field of daily chemical products, specifically relating to a rice fermentation product filtrate and its preparation method, and a hair care composition containing the filtrate. Background Technology

[0002] As living standards improve, people are paying more and more attention to hair care. Hair is mainly composed of keratin linked by disulfide bonds, hydrogen bonds, and other bonds. Damage (perming, dyeing, heat, friction) can break these bonds, causing the hair cuticle to open, internal proteins to be lost, and the hair to become porous and fragile, resulting in problems such as dryness, frizz, and breakage.

[0003] Currently, hair care products on the market mainly address the above problems through the following methods: 1. Silicone Oil and Cationic Polymer Technology: This is the most classic and effective instant smoothing technology. Silicone oil chemistry is highly developed, and various silicone oils with different properties are available on the market. Most conditioners and hair masks use silicone oils such as polydimethylsiloxane combined with cationic polymers. These ingredients can form a smooth film on the hair surface, effectively smoothing the cuticles and providing an immediate smooth effect. However, this technology has significant limitations: First, its effect is mainly concentrated on the hair surface, providing only "temporary repair," and it cannot effectively penetrate to the hair core to replenish lost protein, thus only treating the symptoms, not the root cause. 2. Protein Repair Technology: Some products add ingredients such as hydrolyzed keratin and hydrolyzed wheat protein, aiming to penetrate into the hair shaft for filling and repair. While this technology addresses internal repair to some extent, it often neglects the hair's moisturizing needs. If repaired hair lacks sufficient moisture, its resilience and shine will still be unsatisfactory, it will feel stiff, and it is prone to becoming frizzy again in dry environments.

[0004] Currently, the hair care market is undergoing a profound "green revolution." Consumers' health and environmental awareness is at an all-time high, driving demand for "clean beauty" products from the margins to the mainstream. The market strongly calls for transparent ingredients, avoidance of controversial synthetics such as sulfates and silicone oils, and a pursuit of natural solutions derived from renewable resources. Simultaneously, demand for refined care such as scalp health management and hair loss prevention is surging, and brands with ethical values ​​such as "vegan" and "cruelty-free" are gaining popularity.

[0005] Therefore, there is an urgent need to develop a hair care composition containing natural ingredients that can solve the above problems. Summary of the Invention

[0006] The technical problem to be solved by this invention is to provide a rice fermentation product filtrate, its preparation method, and a hair care composition containing the same. The method for preparing the rice fermentation product filtrate involves crushing, gelatinizing, and saccharifying rice to obtain a culture medium, then inoculating it with Bifidobacterium, Lactobacillus, and lactic acid bacteria for natural fermentation. The filtrate is sterilized to obtain a unique rice fermentation product filtrate that is highly concentrated and enriched with nutrients without any dilution. Furthermore, by combining the rice fermentation product filtrate obtained by the above method with citrus extract and ginger oil, the three components exert a synergistic effect. By strengthening the keratin structure of hair strands, the resulting hair care composition significantly improves hair tensile strength and shine, while reducing resistance during dry and wet combing, reducing breakage, relieving scalp itching, and soothing inflammation, leaving the scalp comfortable.

[0007] The technical solution adopted by the present invention to solve the above problems is as follows: On one hand, the present invention provides a method for preparing rice fermentation product filtrate, comprising the following steps: S1. Crushing: Take rice, wash it to remove impurities, soak it in water to soften the endosperm, then dry it with low-temperature hot air and crush it into powder of 80-120 mesh; In this step, the endosperm is softened by soaking in water. The purpose is to optimize the state of the fermentation substrate through physical softening and preliminary biochemical activation, and to produce rice fermentation product filtrate with richer active ingredients, more stable quality, and better efficacy.

[0008] S2. Gelatinization: Mix the powder with water to form a slurry, adjust the pH value to 5.8-6.2, heat the slurry to 50-60℃, add α-amylase, and heat the slurry to 75-85℃ under stirring, and keep warm until gelatinization is complete; In this step, 50-60℃ is the optimal enzymatic hydrolysis temperature for α-amylase. At this temperature, starch can be decomposed efficiently and accurately. The subsequent heating of the slurry to 75-85℃ is to inactivate the enzyme. During the gelatinization process, iodine solution is used for testing. If the slurry no longer turns blue but becomes reddish-brown or colorless, it indicates that the starch has been basically decomposed into dextrin, and gelatinization is complete.

[0009] S3. Saccharification: Cool the gelatinized slurry to 55-62℃, adjust the pH to 4.5-5.5, add saccharifying enzyme, stir thoroughly and keep warm for 24-72h to carry out the saccharification reaction and obtain rice culture medium; The saccharifying enzyme can be glucoamylase or fungal amylase, but is not limited to these.

[0010] S4. Fermentation: Under aseptic conditions, the inoculum is inoculated into the rice culture medium for natural fermentation. Fermentation ends when the pH of the fermentation filtrate stabilizes at 3.0-4.5, and the filtrate is obtained by filtration. The inoculum consists of Bifidobacterium, Lactobacillus, and Lactobacillus; the mass ratio of the inoculum to the rice culture medium is 2-4%. S5. Sterilization: Pasteurize the filtrate to obtain rice fermentation product filtrate.

[0011] The method for preparing rice fermentation product filtrate of the present invention involves crushing, gelatinizing and saccharifying rice to obtain a culture medium, inoculating it with Bifidobacterium, Lactobacillus and lactic acid bacteria for natural fermentation, and sterilizing the filtrate to obtain a unique rice fermentation product filtrate that is highly concentrated and enriched with nutrients without any dilution. The preparation method is simple and suitable for industrial production.

[0012] Furthermore, in step S1, the temperature of the low-temperature hot air drying is <60°C.

[0013] Furthermore, in step S2, the mass ratio of the powder to water is 1:1.5.

[0014] Furthermore, in step S5, the pasteurization involves incubating the filtrate at 75-80℃ for 15-20 minutes, followed by sterility testing. If the test is successful, the filtrate is ready for sterility testing.

[0015] On the other hand, the present invention provides a rice fermentation product filtrate prepared by the above preparation method.

[0016] The rice fermentation product filtrate prepared by this invention is highly concentrated and enriched with nutrients without any dilution. It is a natural ingredient, mild and safe, and has excellent moisturizing, oil-controlling, soothing, repairing, antioxidant, and hair-care effects.

[0017] In another aspect, the present invention provides a hair care composition comprising the above-mentioned rice fermentation product filtrate.

[0018] Furthermore, the hair care composition comprises the following components in weight percentages: (A) 0.1-25% of the above rice fermentation product filtrate (B) Osmanthus fragrans fruit extract 0.01-1% (C) Ginger oil 0.01-1% (D) Anionic surfactants 8-20% (E) Amphoteric surfactants 1-6% (F) Nonionic surfactant 0.5-3% (G) Hair conditioning agent 0.01-5% (H) Moisturizer 0.5-4% (I) Preservative 0.1-1% (J) pH adjuster 0.01-1.5% (K) Remaining water.

[0019] Among them, the extract of saffron mandarin fruit is rich in vitamin C and flavonoids, which have antioxidant, anti-inflammatory, astringent, and blood circulation-promoting effects. It can effectively combat free radicals, strengthen hair roots, and promote hair growth. However, high concentrations can be highly irritating to the scalp and may cause sensitivity. It also has a certain astringent property, which can lead to dryness and tightness of the scalp. Ginger oil is traditionally used to stimulate the scalp, promote blood circulation, and produce a warming sensation, but its effects are limited and it has a certain degree of irritation. Rice fermentation product filtrate can serve as an excellent base and soothing agent, effectively reducing the irritation of saffron mandarin fruit extract and ginger oil, and improving the tolerability and safety of the formula.

[0020] The hair care composition of this invention combines rice fermentation product filtrate obtained by the above method with three natural ingredients: citrus aurantium extract and ginger oil. These three ingredients work synergistically to effectively improve the scalp microecology, better utilize the excellent hair care and repair effects of the rice fermentation product filtrate, reduce the irritation of citrus aurantium extract and ginger oil, and exert antioxidant, anti-inflammatory, and blood circulation-promoting effects. This results in significantly improved hair tensile strength and shine, reduced combing resistance, and relief of scalp itching and inflammation. Simultaneously, it avoids the potential risks of synthetic chemical components, meeting the market's dual demand for "pure" and "highly effective" products.

[0021] Furthermore, the anionic surfactant is at least one of sodium C14-16 olefin sulfonate, sodium cocoyl hydroxyethanesulfonate, sodium methyl cocoyl taurate, sulfosuccinate, disodium lauryl ether sulfosuccinate, and sarcosinate. The selected anionic surfactant is mainly sulfonic acid-based, which has strong cleaning power, rich foam, high chemical stability, resistance to acid, alkali and hard water, lower irritation than sulfate surfactants, and good water solubility.

[0022] Furthermore, the amphoteric surfactant is at least one of betaine-based and amino acid-based amphoteric surfactants. Betaine-based surfactants include cocamidopropyl betaine, alkyl betaine, etc., and amino acid-based surfactants include alkyl glutamate, sodium / potassium cocoyl glycinate, taurine, etc. The amphoteric surfactant used in this invention contains at least one of the above-mentioned types. The molecular structure of the amphoteric surfactant contains both anionic and cationic hydrophilic groups, which have good compatibility with the human body, excellent mildness and low irritation. It can be compounded with various surfactants and has good compatibility and stability. At the same time, due to the presence of cationic surfactants, it can be adsorbed on negatively charged surfaces (such as hair and fibers), effectively reducing static electricity, making hair easy to comb and fibers soft and fluffy.

[0023] Furthermore, the nonionic surfactant is alkyl glycoside and cocamide MIPA. Alkyl glycoside and cocamide MIPA are extremely mild and safe, with very low irritation to the skin and eyes. They can be well compounded with all types of surfactants (anionic, cationic, and amphoteric), not only without conflict but also reducing the irritation of other surfactants and synergistically improving the foam richness and stability of the overall system.

[0024] Furthermore, the hair conditioning agent is at least one of polyquaternium salt, guar gum, amino silicone oil, emulsified silicone oil, and hydrolyzed keratin, preferably guar gum and polyquaternium salt. Guar gum is a natural polysaccharide polymer derived from guar bean seeds, while polyquaternium salt is a type of synthetic high-molecular-weight cationic polymer and is the core conditioning ingredient in hair care products. Its cationic groups can strongly adsorb onto the negatively charged hair and skin surface (especially after shampooing, when the hair cuticles are open and the negative charge is strong), forming a continuous, lubricating protective film. This effectively neutralizes static electricity, greatly reduces frizz, and makes hair easier to comb.

[0025] Furthermore, the moisturizer is at least one of glycerin, panthenol, propylene glycol, sorbitol, and sodium hyaluronate.

[0026] Furthermore, the preservative is at least one of sodium benzoate and phenoxyethanol; the pH adjuster is citric acid.

[0027] Furthermore, the hair care composition further includes at least one of the following components in weight percentage: 1.5-3% thickening suspending agent, 0.01-0.5% viscosity modifier, 0.01-0.5% chelating agent, and 0.5-2% pearlescent agent.

[0028] The thickening and suspending agent is one or two of Carbopol U20, suspending agent SF-1, liquid crystal paste, and cocamide methyl MEA in any proportion; the viscosity modifier is cocamide methyl MEA; the chelating agent is disodium EDTA; and the pearlescent agent is ethylene glycol distearate.

[0029] The present invention has the following beneficial effects: 1. The method for preparing rice fermentation product filtrate of the present invention involves crushing, gelatinizing and saccharifying rice to obtain a culture medium, inoculating it with Bifidobacterium, Lactobacillus and lactic acid bacteria for natural fermentation, and sterilizing the filtrate to obtain a unique rice fermentation product filtrate. The preparation method is simple and suitable for industrial production.

[0030] 2. The rice fermentation product filtrate prepared by this invention is highly concentrated and enriched with nutrients without any dilution. It is a natural ingredient, mild and safe, and has excellent moisturizing, oil-controlling, soothing, repairing, antioxidant, and hair-care effects.

[0031] 3. The hair care composition of the present invention combines the rice fermentation product filtrate obtained by the above method with three natural ingredients: citrus aurantium extract and ginger oil. These three ingredients work synergistically to effectively improve the scalp microecology, better utilize the excellent hair care and repair effects of the rice fermentation product filtrate, reduce the irritation of citrus aurantium extract and ginger oil, and exert antioxidant, anti-inflammatory, and blood circulation-promoting effects. This results in significantly improved hair tensile strength and shine, reduced combing resistance, and relief of scalp itching and inflammation. Simultaneously, it avoids the potential risks of synthetic chemical components, meeting the market's dual demand for "pure" and "highly effective" products. Detailed Implementation

[0032] To make the technical problems, solutions, and advantages of this invention clearer, a detailed description will be provided below with reference to specific examples. However, the scope of protection of this invention is not limited to the following specific embodiments. The described embodiments are merely some, not all, of the embodiments of this invention, and are not intended to limit the invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0033] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0034] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0035] Examples 1-3 and Comparative Examples 1-4 of the present invention each provide a hair care composition, the dosage formula of the raw materials used in its preparation is shown in Table 1 below; the unit is mass percentage.

[0036] Table 1. Raw material formulations for the examples and comparative examples.

[0037] The preparation method of rice fermentation product filtrate in the examples and comparative examples includes the following steps: S1. Crushing: Take rice, wash it to remove impurities, soak it in water to soften the endosperm, then dry it with low-temperature hot air at 50℃, and crush it into 100-mesh powder; S2. Gelatinization: Mix the powder with water to form a slurry with a powder-to-water mass ratio of 1:1.5, and adjust the pH to 6. Heat the slurry to 55°C, add α-amylase, and heat the slurry to 80°C under stirring. Keep it at this temperature until gelatinization is complete. During gelatinization, use iodine solution to test the slurry. If the slurry no longer turns blue but becomes reddish-brown or colorless, it indicates that the starch has been basically decomposed into dextrin, and gelatinization is complete.

[0038] S3. Saccharification: Cool the gelatinized slurry to 60°C, adjust the pH to 5, add glucoamylase, stir thoroughly and keep warm for 48 hours to carry out the saccharification reaction and obtain rice culture medium. S4. Fermentation: Under aseptic conditions, the inoculum is inoculated into the rice culture medium for natural fermentation. Fermentation ends when the pH of the fermentation filtrate stabilizes at 3.0-4.5, and the filtrate is obtained by filtration. The inoculum consists of Bifidobacterium, Lactobacillus, and Lactobacillus; the mass ratio of the inoculum to the rice culture medium is 3%. S5. Sterilization: Pasteurize the filtrate at 80℃ for 180 minutes. After the incubation period, perform a sterility test. If the test is successful, the rice fermentation product filtrate is obtained.

[0039] The hair care composition of Example 1 above is prepared by the following method: a: Dissolve and stir the surfactants sodium C14-16 olefin sulfonate, sodium cocoyl hydroxyethanesulfonate, disodium lauryl ether sulfosuccinate, disodium cocoyl glutamate, cocamidopropyl betaine, cocoyl glucoside, cocamidopropyl MIPA, pearlescent agent ethylene glycol distearate, and chelating agent disodium EDTA in hot water at 80℃-85℃. After stirring until homogeneous, keep warm to defoam. b: Add hair conditioner polyquaternium-10 and small molecule cationic guar gum conditioner, homogenize and keep warm. After homogenizing until there are no particles, stir and cool to 45℃-60℃. c: Add suspending agent SF-1, amino silicone oil 0949, and emulsified silicone oil 1785 POE, and stir until homogeneous; d: Add rice fermentation product filtrate, VE1208H mandarin fruit extract, ginger oil, moisturizer, preservatives sodium benzoate and phenoxyethanol, and pH adjuster citric acid. Stir well and adjust the pH to 5.5-6.0. Add cocamide methyl MEA to adjust the viscosity to 10,000-15,000 to obtain a hair care composition containing rice fermentation product filtrate.

[0040] The methods for preparing hair care compositions in Examples 2-3 and Comparative Examples 1-4 are similar. If there are components that are not added or replaced, they can be deleted or replaced in the corresponding preparation steps.

[0041] The hair care compositions prepared in Examples 1-3 and Comparative Examples 1-4 were subjected to the following tests.

[0042] 1. In vitro cell experiments The MTT assay was used to quantitatively evaluate the effect of hair care compositions on the proliferation rate of human dermal papillary cells (DPCs), thereby preliminarily determining their potential to promote hair growth. The core principle of the MTT assay is that succinate dehydrogenase in the mitochondria of living cells can reduce yellow MTT (3-(4,5-dimethylthiazol-2)-2,5-diphenyltetrazolium bromide) to water-insoluble blue-purple formazan crystals, while dead cells lack this function. After dissolving the formazan crystals in dimethyl sulfoxide (DMSO), their optical density (OD) value was measured using a microplate reader at a specific wavelength (usually 490 nm). The OD value is directly proportional to the number of living cells, thus indirectly reflecting cell proliferation activity.

[0043] Result judgment criteria: Proliferative effect: If the cell proliferation rate of the experimental group is significantly higher than that of the control group (usually considered to be >110% ~ 120%, and statistically significant, p<0.05), then the test substance is considered to have the effect of promoting the proliferation of DPCs.

[0044] Inhibitory effect: If the cell proliferation rate of the experimental group is significantly lower than that of the control group (usually considered to be <80% ~ 90%, and statistically significant, p<0.05), then the test substance is considered to have the effect of inhibiting the proliferation of DPCs.

[0045] No significant effect: If there is no statistically significant difference in cell proliferation rate between the experimental group and the control group, the test substance is considered to have no significant effect on DPC proliferation.

[0046] The test results are shown in Table 2.

[0047] Table 2 Results of in vitro cell experiments for the examples and comparative examples

[0048] Experimental results showed that Examples 1, 2, 3 and Comparative Example 1 all significantly promoted the proliferation of dermal papilla cells in hair follicles. Among them, Comparative Example 1, containing 30% rice fermentation product filtrate, achieved the highest proliferation rate of 148.4%. Comparative Example 2, a composition with only rice fermentation product filtrate added, also showed a significant cell proliferation effect compared with the control group containing complete culture medium. Comparative Examples 3 and 4, with no addition of the three natural ingredients and with only the addition of citrus aurantium extract and ginger oil, respectively, showed an inhibitory effect on cell proliferation. The above results indicate that rice fermentation product filtrate itself has the potential to promote hair growth, and the effect is more significant when combined with citrus aurantium extract and ginger oil. Therefore, we believe that the combination of the three natural ingredients—rice fermentation product filtrate, citrus aurantium extract, and ginger oil—has a significant promoting effect on the proliferation of dermal papilla cells in hair follicles, achieving a synergistic effect of 1+1+1>3.

[0049] 2. Efficacy testing and evaluation The efficacy of the hair care composition was evaluated through instrumental efficacy testing and consumer testing.

[0050] (1) Tensile strength test: The strength of hair strands is determined by their tensile properties. Hair strands that are difficult to stretch or break are relatively strong. Tensile strength is usually expressed by parameters such as tensile force (load), stress, elongation, and work done throughout the process at the fracture point, yield point, or a specified point. A single hair strand of equal length is stretched uniformly on a tensile testing machine until it breaks, and the tensile strength is calculated based on the curve. Since ambient temperature and humidity affect the tensile properties of hair, temperature and humidity control is required during the test to ensure a stable test environment.

[0051] (2) Hair gloss test: The gloss of the smooth hair strand surface was measured using a precision gloss meter. Light is reflected on the front and back surfaces of the hair, and when passing through the hair, it is affected by melanin or micropores, resulting in different degrees of light absorption or scattering, thus exhibiting different gloss levels. The degree of hair damage, the cleanliness of the hair and scalp, and the distribution of deposits on the hair surface are all important factors affecting hair gloss. Using the same batch of real human hair strands, divided into 7 groups, the gloss of the hair strands after use was measured to evaluate whether the samples had a glossing effect.

[0052] (3) Dry hair combing strength test: Using real human hair strands, the strands were numbered, rinsed with water at a constant speed of 40℃ for 1 minute, rubbed for 1 minute, and repeated twice. Then rinsed with water at a constant speed of 40℃ for 1 minute. The wet hair strands were gently combed neatly with a comb and hung in a constant temperature and humidity room for more than 4 hours. The combing strength test values ​​of the hair strands before and after the test were obtained. The hair combing instrument was turned on, the instrument displacement was set to 245 mm, and the speed was 300 mm / min. The combing strength curve of each hair strand was tested, ensuring that the starting point of the test for each hair strand was the same and that the hair ends completely through the comb. The test was repeated 3 times, ensuring that the test values ​​differed within 0.004 N. The average combing strength and the rate of change of the average combing strength were calculated.

[0053] (4) Consumer testing method: 140 people aged 18-50 with itchy scalp and long hair were recruited and randomly divided into 7 groups of 20 people each. They had no history of severe allergies to skincare or haircare cosmetics; no serious systemic diseases, immunodeficiency, or autoimmune diseases; and had not used hormone drugs or immunosuppressants within the past week. The 7 groups of test subjects used Examples 1-3 and Comparative Examples 1-4 respectively (cleaning twice a week). Each time, depending on the length and volume of hair, sufficient shampoo was applied to the scalp and hair, gently massaged for three minutes, then rinsed thoroughly with warm running water, and the hair was blow-dried to finish one shampooing session. Test subjects agreed not to use any cosmetics that might affect the results or to undergo chemical treatments such as perming or dyeing during the trial. After 8 weeks of testing, volunteers rated the relief of scalp itching or scalp inflammation and the hair care effect before and after using the samples. A score of 0-10 was used, with higher scores indicating a better user experience.

[0054] The efficacy test results are shown in Table 3.

[0055] 3. Product stability testing One-month stability test at 48℃: (1) Before placing the sample into the 48℃ oven, record the initial state in detail, including appearance, color, initial odor, whether the texture is uniform, initial viscosity and pH, and take photos for archiving. (2) Mark the sample and place it in a 48℃ oven; (3) On days 1, 3, and 7, remove the samples and allow them to cool to room temperature (approximately 30-60 minutes) before observation and evaluation. Thereafter, remove the samples for observation and evaluation once a week (e.g., on days 14, 21, and 28). (4) Record the following for each observation: Appearance changes: presence or absence of layering, precipitation, crystallization, color darkening / lightening, oil droplet precipitation; Odor changes: Has the odor become sour, rancid, or has other unusual smells? Texture / viscosity change: Whether it has become thinner or thicker compared to the initial record; pH changes: Record whether there are significant fluctuations in pH value.

[0056] The product stability test results are shown in Table 3.

[0057] Table 3. Effect evaluation and stability test results of the examples and comparative examples.

[0058] By comparing Examples 1-3 with Comparative Examples 1-4, it can be seen that, compared with Comparative Examples 2-4, the hair care compositions of Examples 1-3 and Comparative Example 1, which contain rice fermentation product filtrate, mandarin orange fruit extract, and ginger oil, have a significant enhancing effect on hair tensile strength, hair shine, and combing ability. However, the hair care composition of Comparative Example 1 is an unstable system. The results indicate that the combination of the three natural ingredients—rice fermentation product filtrate, mandarin orange fruit extract, and ginger oil—has a significant effect on improving hair tensile strength, hair shine, combing ability, and relieving scalp itching and inflammation, achieving a synergistic effect of 1+1+1>3.

[0059] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0060] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0061] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A method for preparing a rice fermentation product filtrate, characterized by, The method comprises the following steps: S1. Pulverization: rice is washed to remove impurities, soaked to soften endosperm, dried by low-temperature hot air, and then broken into powder with a particle size of 80-120; S2. Paste-making: the powder is mixed with water to form a slurry, and the pH value is adjusted to 5.8-6.2; the slurry is heated to 50-60℃, and α-amylase is added; under stirring, the slurry is heated to 75-85℃, and the heating is maintained until paste-making is completed; S3. Saccharification: the slurry after paste-making is cooled to 55-62℃, and the pH value is adjusted to 4.5-5.5; saccharifying enzyme is added, and the mixture is stirred and maintained for 24-72h for saccharification reaction to obtain a rice culture medium; S4. Fermentation: under sterile conditions, the strain is inoculated into the rice culture medium for natural fermentation; when the pH value of the fermentation filtrate is stabilized at 3.0-4.5, the fermentation is completed, and the filtrate is obtained by filtration; the strain is Bifidobacterium, Lactobacillus, and Lactic acid bacteria; the mass ratio of the strain to the rice culture medium is 2-4%; S5. Sterilization: the filtrate is subjected to pasteurization to obtain a rice fermentation product filtrate.

2. The production method according to claim 1, characterized by, In the step S1, the low-temperature hot air drying is performed at a temperature of <60℃.

3. The preparation method according to claim 1, characterized in that, In the step S2, the mass ratio of the powder to water is 1:1.

5.

4. The method of claim 1, wherein, In the step S5, the pasteurization is performed by maintaining the filtrate at 75-80℃ for 15-20min; after the maintaining, sterile detection is performed; when the detection is qualified, the rice fermentation product filtrate is obtained.

5. A rice fermentation product filtrate prepared by the preparation method of any one of claims 1-4.

6. A hair care composition characterized in that, The method comprises the rice fermentation product filtrate of claim 5.

7. The hair care composition according to claim 6, characterized in that, The hair care composition comprises the following components in mass percentage: (A) the rice fermentation product filtrate of claim 7 0.1-25% (B) sandkan fruit extract 0.01-1% (C) ginger oil 0.01-1% (D) anionic surfactant 8-20% (E) amphoteric surfactant 1-6% (F) nonionic surfactant 0.5-3% (G) hair conditioner 0.01-5% (H) humectant 0.5-4% (I) preservative 0.1-1% (J) pH regulator 0.01-1.5% (K) the balance is water.

8. The hair care composition of claim 7, wherein, The anionic surfactant is at least one of sodium C14-16 olefin sulfonate, sodium cocoyl isethionate, sodium methyl cocoyl taurate, sulfosuccinate, disodium lauryl ether sulfosuccinate, sarcosinate, and disodium cocoyl glutamate; the amphoteric surfactant is at least one of betaine and amino acid amphoteric surfactant; the nonionic surfactant is alkyl glycoside and cocamide MIPA.

9. The hair care composition of claim 7, wherein, The hair conditioner is at least one of polyquaternium, guar gum, amino silicone oil, emulsified silicone oil, and hydrolyzed keratin; the humectant is at least one of glycerol, panthenol, propylene glycol, sorbitol, and sodium hyaluronate; the preservative is at least one of sodium benzoate and phenoxyethanol; and the pH regulator is citric acid.

10. The hair care composition of claim 7, wherein, The hair care composition further comprises at least one of the following components by mass percentage: thickening suspending agent 1.5-3%, viscosity modifier 0.01-0.5%, chelating agent 0.01-0.5%, pearlizing agent 0.5-2%.

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