JPH04112809A - Powdery humectant - Google Patents

Abstract

PURPOSE:To obtain the subject powdery humectant excellent in moisture retention, smooth spread and adhesion on the skin by soaking a powdery crystalline cellulose in a lactic acid fermented solution. CONSTITUTION:A powdery crystalline cellulose preferably having 3-30mum average particle size and 400-1500 average polymerization degree is mixed with a lactic acid fermented solution using a mixer, etc., so that the lactic acid fermented solution may be sufficiently infiltrated into the powdery crystalline cellulose. After heating and drying, grinding is carried out using a grinder, etc., thus providing the objective powdery humectant. As the powdery crystalline cellulose, mention may be made of a fine cellulose powder obtained by treating a raw material cellulose with cellulase, subsequently carrying out acid hydrolysis in a mild condition and mechanically crushing the hydrolyzed cellulose.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a powdered moisturizing agent, and more specifically, a powdered moisturizing agent that has excellent moisturizing properties, smoothness of spreading on the skin, and adhesion. and cosmetics containing the same.

[Conventional technology]

Moisturizing agents used in various cosmetics have traditionally been polyhydric alcohols such as glycerin and propylene glycol; sugars such as sorbitol and maltitol; amino acids; Molecular substances are known. Among them, those derived from lactic acid bacteria fermentation liquid are known to have excellent properties such as strong moisturizing effect, skin moisture regulating effect, and antioxidant effect, and cosmetics using moisturizers derived from this lactic acid bacteria fermentation liquid are known. Many materials have also been put into practical use.

[Problem to be solved by the invention]

However, this moisturizing agent derived from lactic acid bacteria fermentation liquid is obtained as an aqueous solution and cannot be processed into powder form, so it can be used in powder-type or cake-type foundations, white powder, solid white powder, blusher, and powder-type eye shadow. There were some inconveniences when trying to use it in cosmetics such as.

Recently, attempts have been made to solve this problem by coating powder with a moisturizing agent derived from the lactic acid bacteria fermentation liquid (Japanese Unexamined Patent Publication No. 2-42010), but this technique does not require the use of a base material. Since the powder is derived from inorganic materials such as titanium oxide and talc, or nylon powder is used, the amount of moisturizing agent derived from the lactic acid bacteria fermentation liquid coated on the powder is insufficient (approximately 1% in the example), which is not always satisfactory. The drawback was that the desired moisturizing effect could not be obtained.

Therefore, it has been desired to develop a powdered moisturizer that has an excellent moisturizing effect and can be incorporated into various cosmetics.

[Means to solve the problem]

Under such circumstances, the present inventors conducted extensive research and found that if powdered crystalline cellulose is infiltrated with lactic acid bacteria fermentation liquid,
The present invention was completed based on the discovery that a powdered moisturizer with excellent moisturizing properties, smooth spread and good adhesion to the skin was obtained, and that this was useful as a cosmetic material.

That is, the present invention provides a powdered moisturizing agent obtained by infiltrating powdered crystalline cellulose with a lactic acid bacteria fermentation liquid, and a cosmetic containing the powdered moisturizing agent.

Examples of the powdered crystalline cellulose used in the present invention include fine powder obtained by treating a cellulose raw material with cellulose, acid hydrolyzing it under mild conditions, and then mechanically crushing it.

The average particle size of such powdered crystalline cellulose is preferably 3 to 30 microns, and the average degree of polymerization is preferably 400 to 1,500.

Raw materials for cellulose include, for example, natural cellulose materials such as cotton, hemp, paper, and wood harutz; rayon, cellophane,
Regenerated cellulose materials such as cupra; processed products such as bleached sulfide bulbs and bleached sulfate bulbs can all be used, but among these, hemp fibers, particularly cellulose fibers obtained from the bast of hemp stems, are preferred. Note that the hemp used is ramie, flax, hemp, jute, etc., which are commonly used for clothing, robes, etc. Cellulase treatment, acid hydrolysis, and mechanical crushing of cellulose raw materials are described in, for example, Japanese Patent Application Laid-Open No.
3-297401.

Next, the lactic acid bacteria fermentation liquid used in the present invention is listed in the "Cosmetic Type Permit Standards" and is also specified in Japanese Patent Publication No. 2-242.
An example of the production method is also disclosed in Publication No. 47, and it is obtained by inoculating lactic acid bacteria into a culture medium whose main component is animal milk, performing lactic acid fermentation, and separating whey from the resulting culture. in,
The liquid is used as it is, or if necessary, subjected to a treatment such as heating under reduced pressure to evaporate and remove aroma components.

The lactic acid bacteria used for lactic acid fermentation are those commonly used in the production of ordinary lactic acid drinks, fermented milk, etc., such as Lactobacillus acidophilus, Lactobacillus bulgaricus, Lactobacillus casei, Streptococcus thermophilus, etc. be able to.

The animal milk used as the culture medium may be human milk, cow's milk, goat milk, etc., and may also be skimmed milk of these animal milks or reconstituted milk from powdered milk.

The physical property values of the lactic acid bacteria fermentation liquid used in the present invention are, for example, as follows.

To infiltrate the powdered crystalline cellulose with the lactic acid bacteria fermentation liquid, for example, mix the powdered crystalline cellulose and the lactic acid bacteria fermentation liquid using a mixer or the like to sufficiently infiltrate the lactic acid bacteria fermentation liquid into the powdered crystalline cellulose. This is carried out by heating and drying, and then pulverizing using a pulverizer or the like. Note that drying may be performed under reduced pressure if necessary. The amount of the lactic acid bacteria fermentation liquid used to infiltrate the crystalline cellulose is preferably 0.1 to 150% by weight, particularly 1 to 100% by weight based on the crystalline cellulose. In addition to the lactic acid bacteria fermentation liquid, other water-soluble moisturizers such as hyaluronic acid, collagen aqueous solution, glycerin, propylene glycol, etc. may be combined and simultaneously infiltrated into powdered crystalline cellulose, and then the same process is carried out. Through this process, various powdered moisturizers can be obtained depending on the purpose.

By blending the powdered moisturizing agent obtained in this way, a cosmetic having an excellent moisturizing effect and good spreadability and adhesion to the skin can be obtained.

The amount of the present chalk-like humectant added to cosmetics is not particularly limited, but is preferably 0.1 to 50% by weight, particularly 0.2 to 20% by weight.

In addition to the powdered moisturizing agent, which is an essential ingredient, the cosmetic of the present invention may include various oils, surfactants, other powders, preservatives, drugs, pigments, fragrances, and ultraviolet rays within the range that does not impair the effects of the present invention. Components that are generally included in cosmetics, such as absorbents, can be included.

The cosmetic composition of the present invention can be produced by a known method, and can be made into, for example, a powder type or cake type foundation, a white powder, a solid white powder, a blusher, a powder type eye shadow, and the like. It can also be made into an oil-based solid cosmetic such as Robeni.

〔Effect of the invention〕

In the powdered moisturizing agent of the present invention, the lactic acid bacteria fermentation liquid is infiltrated not only on the surface of the powdered crystalline cellulose but also into the internal structure of the powder, so the amount of lactic acid bacteria fermentation liquid retained per powder is extremely large. It has an excellent moisturizing effect, and also spreads smoothly and has good adhesion to the skin.

Therefore, the cosmetic composition of the present invention containing this also has an excellent moisturizing effect and a good feeling of use.

〔Example〕

Next, the present invention will be explained with reference to Examples.

Production Example 1 Production of lactic acid bacteria fermentation liquid 97 parts by weight of purified water was added to 3 parts by weight of skim milk powder, and after heat sterilization, Streptococcus thermophilus starter was inoculated and cultured at 37°C for 24 hours.

After the culture was completed, clear whey was obtained by filtration. This was heat-treated at 45° C. under reduced pressure using a dealator to obtain a lactic acid bacteria fermentation liquid.

Example 1 Production of powdered moisturizer 100 g of hemp cellulose powder with an average particle size of lO and 100 g of the lactic acid bacteria fermentation liquid obtained in Production Example 1 were put into a mixer and mixed thoroughly, and then dried at 80°C or less. .

This was pulverized using a pulverizer to obtain a powdered moisturizer (■).

In this example, 10g of the lactic acid bacteria fermentation liquid obtained in Production Example 1 was used.
Or 50g added, or lactic acid bacteria fermentation 150g
At the same time, 25 g of a sodium hyaluronate aqueous solution was added, and each was treated in the same manner to obtain a powdered moisturizer (1), (2), or (2).

Test Example 1 The powdered moisturizers ■ to ■ obtained in Example 1 and untreated hemp cellulose powder (Comparative Example 1) were mixed with 65% R, H, 2
After being left at 5℃ to reach a constant weight, 90% R, H,,25
The moisture absorption rate (moisturizing ability) at ℃ was measured over time by gravimetric method.

The results are shown in Table 1.

From Table 1 below, it can be seen that the powdered humectant of the present invention has an excellent moisturizing effect.

Example 2 Powder Foundation A powder foundation having the formulation shown in Table 2 was prepared.

The following margin (manufacturing method) The formulation (B) above was added to the mixture of the formulation (A) above in a high-speed mixer (Henschel type mixer) at 80°C, mixed uniformly, and then the formulation (C ) was added, and then crushed using a crusher and pressed to obtain powder foundations 1 to 4.

Test Example 2 Using powder foundation 1 obtained in Example 2 (Formulation Example 1) and a foundation containing the same amount of hemp cellulose powder instead of the powdered moisturizing agent (Comparative Example 2), A panel of 7 expert mixers evaluated the following four items: smoothness of spread, adhesion to the skin, squeaky feeling, and moist feeling using the following criteria.

(Evaluation criteria) Margin below (weight%) The obtained results, The average score is shown in Table 3. vinegar.

Margin below From Table 3, the cosmetics of the present invention are as follows: Smoothness of elongation, adhesion to the skin, No squeaky feeling, Feels moist It can be seen that it is an excellent cosmetic in all respects.

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Claims (1)

[Scope of Claims] 1. A powdered moisturizer obtained by infiltrating powdered crystalline cellulose with lactic acid bacteria fermentation liquid. 2. The powdered moisturizing agent according to claim 1, wherein the powdered crystalline cellulose is obtained by treating a cellulose raw material with cellulase, acid hydrolyzing it under mild conditions, and then mechanically crushing it. 3. A cosmetic containing the powdered moisturizer according to claim 1.