Application of hydrolyzed rice protein in hair care product

Abstract

The invention provides application of rice protein hydrolysate in hair care products, and belongs to the technical field of wash supplies, the rice protein hydrolysate contains 30-40% of small molecule peptide, and the average molecular weight of the small molecule peptide is 450-550Da; the rice hydrolyzed protein contains 55-65% of insoluble particles, and the average particle size of the insoluble particles is 1-9 [mu] m. The small molecule peptide in the hydrolyzed rice protein provided by the invention can play a role in inhibiting scalp cell senescence; the insoluble particles can be attached to the hair, the particle lubricating effect is achieved, the lubricating effect between the hair during hair washing is improved, friction and pulling force are reduced, and therefore the hair loss / hair loss phenomenon is reduced; the rice hydrolyzed protein has the effects of preventing hair breakage, fixing color and / or repairing, and has great potential in application in hair care products.

Description

Technical Field

[0001] The invention belongs to the technical field of toiletries, and in particular relates to application of rice protein hydrolysate in hair care products. Background Art

[0002] In the field of hair care products, as people's quality of life improves, their requirements for hair care effects become more stringent, and hair care product research and development are constantly innovating. Traditional hair care products focus on basic cleansing and surface smoothing, but are unable to fundamentally solve various hair problems.

[0003] Common hair problems such as dryness, frizz, split ends, and breakage seriously affect hair's appearance and health. Hair is primarily composed of keratin, with the outer scales protecting the inner cortex. When exposed to external factors such as ultraviolet radiation, frequent use of high-temperature styling tools (such as hair dryers, straighteners, and curling irons), erosion from chemical dyes and perms, and daily combing friction, the scales can become damaged, warped, or flaked, leading to moisture loss and exposure of the hair's internal structure, which in turn can cause the aforementioned problems.

[0004] Many hair care products currently on the market use silicone oil to improve hair's smoothness. Silicone oil forms a smooth, protective film on the hair's surface, making it feel soft and easy to comb. However, silicone oil is insoluble in water. Long-term use can cause it to accumulate on the hair, clog the follicles, and affect the hair's normal breathing and metabolism. This can cause the hair to gradually lose its luster, become heavy and flat, and hinder the absorption of subsequent nutrients. Some hair care products also contain plant-based oils such as olive oil and coconut oil. While these oils can provide some nourishment, their larger molecules make it difficult for them to penetrate deeply into the hair, limiting their effect to the surface. Furthermore, plant-based oils are prone to oxidation and rancidity, affecting the product's shelf life and effectiveness. Excessive oiliness can also cause scalp irritation and increase the risk of dandruff.

[0005] Generally speaking, shampooing is considered a protective process for hair, but improper shampooing can also damage it. Three main types of chemical bonds, or intermolecular forces, contribute to the strength of hair keratin. The first is disulfide bonds, one of the primary covalent bonds in hair keratin, responsible for the hair's strength under various circumstances. If severely damaged, such as with depilatory creams or perm solutions, hair can easily break and fall out. The second type is ionic bonds, one of the pillars of hair protein's strength. Most ionic bonds are minimal in aqueous solution. Once water is present, the ions dissociate, and the interionic forces cease to contribute to hair's strength. The third type of force, van der Waals forces, is a weaker intermolecular force that also contributes to hair's strength, but is relatively weak. When shampooing, hair is immersed in water, completely breaking the ionic bonds within the hair, reducing its strength by as much as half or as little as one-third. The hair at this time becomes extremely fragile, and many shampoo and hair care products used at this time are very dry and ineffective, causing the hair to suffer throughout the entire washing process. The hair is severely entangled and pulled, and a large number of hair are torn off, resulting in a large amount of hair loss.

[0006] Also attempt to add hydrolyzed rice protein (for example patent of invention, CN111265439A, a kind of oil-controlling anti-dandruff and antipruritic shampoo and preparation method thereof) in some existing hair care products, but its hydrolyzed rice protein mainly plays the effect of moisturizing and keeping the normal keratinization of keratinocytes.Hydrolyzed rice protein, as a kind of hair care ingredient with potential, has not yet been fully developed and utilized. Summary of the Invention

[0007] In view of this, the object of the present invention is to provide an application of rice protein hydrolysate in hair care products. During the shampooing process, the hydrolyzed rice protein provided by the present invention has a maintenance effect on hair, and on the one hand, it has a repairing effect on the disulfide bonds of the hair; secondly, the small molecule peptides in the hydrolyzed rice protein have a good antioxidant effect and a small molecular weight, which can play a role in inhibiting scalp cell aging; thirdly, the hydrolyzed rice protein contains approximately 60% insoluble parts, but the particle size is very small, with an average particle size of only a few microns, and the hair diameter is about 40 to 120 μm. The protein particles can be attached to the hair, playing a particle lubricating effect, increasing the lubrication between the hair during shampooing, reducing friction and pulling force, thereby reducing hair loss / hair loss.

[0008] The invention provides an application of rice hydrolyzed protein in hair care products. The rice hydrolyzed protein contains 30-40% of small molecule peptides, and the average molecular weight of the small molecule peptides is 450-550 Da.

[0009] Preferably, the rice protein hydrolyzate contains 55-65% insoluble particles, and the average particle size of the insoluble particles is 1-9 μm.

[0010] Preferably, the rice protein hydrolyzate is obtained by directional deep enzymatic hydrolysis of a biological enzyme preparation.

[0011] Preferably, the enzymatic hydrolysis method of the rice protein hydrolyzate comprises the following steps:

[0012] 1) rice protein powder is mixed with water to obtain slurry;

[0013] 2) mixing the protease with the slurry and performing enzymolysis to obtain an enzymatic hydrolyzate;

[0014] 3) sterilizing, drying and pulverizing the enzymatic hydrolyzate in sequence to obtain rice protein hydrolyzate.

[0015] Preferably, the mass ratio of the rice protein powder to water in step 1) is 1g: (5-15)ml.

[0016] Preferably, the added amount of the protease is 0.5% to 1.0% of the mass of the slurry, the temperature of the enzymatic hydrolysis is 30 to 50° C., and the time of the enzymatic hydrolysis is 30 to 120 minutes.

[0017] Preferably, the rice protein hydrolyzate is added to the hair care product in an amount of 0.5 to 5.0% (w / v).

[0018] Preferably, the hair care product has the effects of preventing hair breakage, fixing hair color and / or repairing hair.

[0019] Preferably, the hair care products include shampoo, conditioner, hair mask and hair care essential oil.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides an application of rice hydrolyzed protein in hair care products. The rice hydrolyzed protein is obtained by directional deep enzymatic hydrolysis of a biological enzyme preparation, contains 30-40% of small-molecule peptides, and the average molecular weight of the small-molecule peptides is 450-550 Da; and further contains 55-65% of insoluble particles, and the average particle size of the insoluble particles is 1-9 μm. The hydrolyzed rice protein provided by the present invention has a nourishing effect on hair, and has the effects of preventing hair breakage, fixing color and / or repairing hair.

[0021] According to the examples of the present invention, the results of testing the anti-hair-breakage efficacy of rice hydrolyzed protein showed that the tensile strength of hair tresses treated with the sample increased by 27.961% compared to the pre-treatment tensile strength. The hair tresses treated with the sample showed a significant difference compared to the pre-treatment tensile strength, indicating that rice hydrolyzed protein has an anti-hair-breakage efficacy. The results of testing its hair-repair efficacy showed that the friction of the hair tresses treated with the sample decreased by 33.333% compared to the pre-treatment tensile strength. There was also a significant difference in friction between the hair tresses treated with the sample and the pre-treatment tensile strength, indicating that rice hydrolyzed protein has a hair-repairing effect. The results of testing its color-fixing efficacy showed that the color difference of the hair tresses treated with rice hydrolyzed protein decreased by 30.063% compared to the hair tresses treated with water, and there was a significant difference compared to the hair tresses treated with water, indicating that rice hydrolyzed protein has a color-fixing effect. DETAILED DESCRIPTION

[0022] The invention provides an application of rice hydrolyzed protein in hair care products. The rice hydrolyzed protein contains 30-40% of small molecule peptides, and the average molecular weight of the small molecule peptides is 450-550 Da.

[0023] In the present invention, the rice protein hydrolyzate preferably contains 55-65% insoluble particles, with an average particle size of 1-9 μm. In the present invention, the insoluble particles are very small, with a hair diameter of approximately 40-120 μm. The insoluble particles adhere to the hair, acting as a lubricant, increasing lubrication between the hair during shampooing, reducing friction and pulling forces, and thus alleviating hair loss.

[0024] Particulate lubrication is a method that uses tiny particles to reduce friction and wear between two contacting surfaces. This method can achieve excellent lubrication when applied in situations where traditional lubrication methods are difficult to implement or ineffective.

[0025] In the present invention, the rice protein hydrolyzate is preferably obtained by directional deep enzymatic hydrolysis using a biological enzyme preparation. The enzymatic hydrolysis method of the rice protein hydrolyzate comprises the following steps: 1) mixing rice protein powder with water to obtain a slurry; 2) mixing a protease with the slurry and performing enzymatic hydrolysis to obtain an enzymatic hydrolyzate; and 3) sterilizing, drying, and pulverizing the enzymatic hydrolyzate in sequence to obtain the rice protein hydrolyzate.

[0026] In the present invention, rice protein powder is mixed with water to prepare a slurry. The present invention does not particularly limit the source of the rice protein powder, and commercially available products can be used. The present invention preferably conducts inspections according to the raw material standard requirements, and can only be put into storage after passing the inspection and stored as required. The warehouse needs to take measures such as cleaning, sanitation, and insect and rodent prevention. In the present invention, the slurry preparation is preferably carried out in a slurry preparation tank, and the mass ratio of the rice protein powder to water is preferably 1g: (5-15) ml, more preferably 1g: (8-12) ml.

[0027] After obtaining the slurry, the present invention mixes the protease with the slurry and performs enzymatic hydrolysis to obtain an enzymatic hydrolyzate. In the present invention, the amount of the protease added is 0.5% to 1.0% of the slurry mass, preferably 0.6% to 0.9%; the enzymatic hydrolysis temperature is 30 to 50°C, preferably 32 to 35°C; and the enzymatic hydrolysis time is 30 to 120 minutes, preferably 40 to 50 minutes.

[0028] After the enzymolysis is completed, the enzymolysis liquid is sterilized, dried and crushed in sequence to obtain rice protein hydrolyzate.

[0029] In the present invention, the protein solution is preferably heated to inactivate enzymes to terminate the enzymatic hydrolysis reaction and sterilized to control the number of microorganisms in the product. In the present invention, the sterilization temperature is preferably 100-110°C, and the sterilization time is preferably 5-20 minutes.

[0030] In the present invention, the drying is preferably carried out by spray drying. The liquid to be dried is temporarily stored in a pre-spray drying tank and maintained at a certain temperature. The liquid in the pre-drying temporary storage tank is fed into a spray drying tower through a conveying pipeline.

[0031] The present invention is pulverized after the spray drying. In the present invention, the finished protein powder particles after spray drying are relatively coarse, so they are pulverized.

[0032] After the pulverization, the pulverized protein powder particles are packaged, and the hygiene of the packaging room meets the relevant standard requirements.

[0033] In the present invention, the rice protein hydrolysate is preferably added to the hair care product in an amount of 0.5-2% (w / v). In the present invention, the hair care product has the effects of preventing hair breakage, fixing hair color and / or repairing hair.

[0034] The present invention has no particular limitation on the specific type of the hair care product, and any conventional hair care product in the art may be used, including but not limited to shampoo, conditioner, hair mask and hair care essential oil.

[0035] The technical solutions provided by the present invention are described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0036] Example 1

[0037] Preparation of rice protein hydrolyzate

[0038] Process flow: rice protein powder → slurry preparation → hydrolysis reaction → drying → crushing → packaging

[0039] (1) Raw materials

[0040] The raw material of this product is commercially available rice protein powder, which is inspected according to relevant raw material standards. It can only be put into storage after passing the inspection and stored in accordance with the requirements. The warehouse needs to be clean, hygienic and insect and rodent-proof.

[0041] (2) Slurry preparation

[0042] Add rice protein powder raw material into the slurry mixing, add a certain proportion of water according to the process requirements, add 10ml of water to 1g of rice protein powder; in the slurry mixing tank, stir and adjust the material concentration required by the process, and exchange heat to the appropriate temperature of 35℃ for the enzymatic hydrolysis reaction.

[0043] (3) Hydrolysis reaction

[0044] Protease is added at a ratio of 0.5%, diluted with water and then added to rice protein slurry, and enzymolysis is performed according to process requirements. The enzymolysis temperature is 35° C., and the enzymolysis time is 40 minutes.

[0045] (4) Enzyme inactivation and sterilization

[0046] The protein liquid is heated to 110°C to inactivate enzymes and terminate the enzymatic hydrolysis reaction; sterilize and control the number of microorganisms in the product. The temperature and time are controlled according to the process requirements.

[0047] (5) Drying

[0048] The spray drying method is adopted, and the liquid to be dried is temporarily stored in the pre-spray drying tank and maintained at a certain temperature; the liquid in the pre-drying temporary storage tank is sent to the spray drying tower through a conveying pipeline.

[0049] (6) Crushing

[0050] The particles of the finished protein powder after drying are relatively coarse and the product needs to be crushed. (7)

[0052] The packaging is measured and packed as required, and the hygiene of the packaging room complies with relevant regulations.

[0053] Example 2

[0054] Testing the Hair Care Function of Rice Protein Hydrolyzate

[0055] Rice protein hydrolysate was prepared with distilled water to form a 1% sample solution.

[0056] The hair-strengthening efficacy of hydrolyzed rice protein was tested using the experimental method (XYIC-SOP-CE-017 Hair Product Strengthening Efficacy Evaluation Method). The test results showed that the tensile strength of hair tresses treated with the sample increased by 27.961% compared to the pre-treatment value. This difference was significant (P < 0.001), indicating that the sample has anti-hair-breakage efficacy.

[0057] The repairing efficacy of the hydrolyzed rice protein sample was tested according to the experimental method (XYJC-SOP-CE-036 Hair Product Repair Efficacy Test Method). The test results showed that the friction of the hair tresses before and after application decreased by 33.333%. The difference in friction before and after application was significant (0.010 ≤ P < 0.050), indicating that the sample has hair repairing properties.

[0058] The samples were tested for their color-fixing efficacy using the experimental method (XYIC-SOP-CE-043, Testing Method for Color-Fixing Efficacy of Hair Products). The test results showed that the color difference between the hair tresses in the sample group and the hair tresses in the water group decreased by 30.063%. This difference was significantly different (P<0.010, significance factor 0.001 ≤ P < 0.010), indicating that the sample possesses color-fixing efficacy.

[0059] As can be seen from the above examples, the hydrolyzed rice protein provided by the present invention has a nourishing effect on hair, and has the effects of preventing hair breakage, fixing color and / or repairing hair.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An application of rice protein hydrolysate in hair care products, characterized in that, The rice protein hydrolysate contains 30-40% of small molecule peptides, and the average molecular weight of the small molecule peptides is 450-550Da.

2. The use according to claim 1, characterized in that The rice protein hydrolyzate contains 55-65% of insoluble particles, and the average particle size of the insoluble particles is 1-9 μm.

3. The use according to claim 1 or 2, characterized in that The rice protein hydrolyzate is obtained by directional deep enzymatic hydrolysis of a biological enzyme preparation.

4. The use according to claim 3, characterized in that The enzymatic hydrolysis method of described rice protein hydrolyzate comprises the following steps: 1) rice protein powder is mixed with water to obtain slurry; 2) mixing the protease with the slurry and performing enzymolysis to obtain an enzymatic hydrolyzate; 3) sterilizing, drying and pulverizing the enzymatic hydrolyzate in sequence to obtain rice protein hydrolyzate.

5. The use according to claim 4, characterized in that The mass ratio of the rice protein powder to water in step 1) is 1g: (5-15)ml.

6. The use according to claim 4, characterized in that The added amount of the protease is 0.5% to 1.0% of the mass of the slurry, the temperature of the enzymatic hydrolysis is 30 to 50° C., and the time of the enzymatic hydrolysis is 30 to 120 minutes.

7. The use according to claim 1, characterized in that The rice protein hydrolysate is added to the hair care product in a proportion of 0.5 to 5.0% (w / v).

8. The use according to claim 1, characterized in that The hair care product has the functions of preventing hair breakage, fixing hair color and / or repairing hair.

9. The use according to claim 1, characterized in that The hair care products include shampoo, conditioner, hair mask and hair care essential oil.