JP2631711B2 - Cosmetics - Google Patents

Description

The present invention relates to a novel cosmetic.

[Conventional technology]

BACKGROUND ART Pharmaceutical ingredients that are present in natural products have been conventionally incorporated into cosmetics, and in particular, developments have recently been made with the advancement of biotechnology.

Its medicinal effects are to provide nutrients, water and oil to the skin, to moisturize, prevent a decrease in elasticity, and to activate the dermal activity.

On the other hand, rice bran has been conventionally used as a cosmetic. An example is a method of putting bran in a cloth bag and using it as a cleaning agent. In this method, the oil component in the bran is emulsified by mixing with water, and the effect of removing dirt by this emulsifying action is utilized. The processed products include soaps, detergents, lotions, emulsions, creams, cosmetics for hair, and the like. These are those in which rice bran is directly blended, rice bran oil is blended, rice bran oil is processed and blended, or only the medicinal components in rice bran are blended. Γ-Oryzanol is widely used as a medicinal ingredient. It is known that γ-oryzanol has moisturizing, sebum line activation, dandruff / kayumi prevention, antioxidant effect and the like.

The external and internal environment for the skin uses the functions of the skin and promotes aging. Among them, the oxidation reaction is said to be the primary factor that damages skin and hair.

For example, skin is moisturized and protected by its secretions, sweat and sebum, and can maintain smoothness and elasticity.

However, sebum undergoes an oxidative effect on the surface of the skin, and its products promote skin aging, pigmentation, reduced elasticity,
It causes wrinkles and the like. The salt and urea in the sweat stimulate the skin as waste products after the water in the sweat evaporates, thereby impairing skin function and promoting aging due to oxidation products. Further, free radicals, active oxygen, ultraviolet rays, and the like generated in the body become oxidation promoting factors.

[Problems to be solved by the invention]

Thus, oxidation is said to be the primary factor that impairs skin and hair function. Therefore, prevention of skin oxidation is an important issue in cosmetics.

On the other hand, rice bran is used as a cosmetic as seen in the prior art, but most of it is derived from oil-soluble components in rice bran. Regarding the water-soluble component, despite the fact that it contains substances that have medicinal properties as cosmetics,
It can be said that it has not been used effectively.

The present invention has been made in view of such a state of the prior art, and an object of the present invention is to provide a safe and highly effective cosmetic obtained from a rice bran raw material.

[Means for solving the problem]

In general, the present invention relates to a cosmetic comprising a water-soluble antioxidant obtained from a rice bran raw material.

The water-soluble antioxidant in the present invention is described in JP-A-62-2419.
It is obtained by extracting the rice bran raw material with an aqueous solvent according to the method of No. 85. The rice bran raw material may be rice bran itself or defatted rice bran obtained by removing a tree fat component with a solvent such as hexane. Rice bran defatted with hexane shows no deterioration even after storage at room temperature for 3 months, and is desirable as a practical raw material.

What is used as a water-containing solvent may be water itself, but further contains enzyme agents such as protease and amylase, salts (particularly salt), water-soluble organic solvents (particularly ethanol) and
It may be an aqueous solvent to which at least one selected from the group consisting of pH adjusters is added. More specifically, as an extraction method, there is a method of using or combining water treatment, liquefaction treatment and protease treatment alone. For example, water treatment alone, liquefaction treatment-protease treatment, or protease treatment alone may be used.

The extract containing the above water-containing solvent contains a water-soluble antioxidant, and also contains amino acids, peptides, brans,
Acids, minerals, etc. are also included. This water-soluble antioxidant prevents not only oxidation in the skin but also oxidation of fats and oils incorporated in cosmetics. In addition, this antioxidant exhibits an excellent synergistic effect with other antioxidants usually incorporated in cosmetics, such as turkey pherol.

On the other hand, other components, such as amino acids, peptides, brans, acids, and minerals, are selected as nutrients for the skin and hair. In addition, the skin function is further activated.

Therefore, according to the present invention, the water-soluble component in the rice bran raw material can be effectively used as a cosmetic. That is,
It is possible to obtain a novel cosmetic which is effective in preventing oxidation, activating skin functions, and the like.

The cosmetic of the present invention contains an extract obtained by the above-mentioned hydrated solvent as an essential component, and, if necessary, generally contains water, fats and oils, humectants, surfactants, alcohols, pigments, preservatives, bactericides, antioxidants, and the like. What is formulated as cosmetics can be added. The amount of the extract with the aqueous solvent is generally 0.
0001 to 1% by weight is appropriate but not limited. In addition, cosmetics generally take the form of a liquid, paste, solid, or powder, but are not limited thereto. In addition,
The cosmetics in the present invention refer to commonly used fragrances and cosmetics such as skin cleansing agents, lotions, creams, emulsions, makeup supplies, shampoos, hair nourishing and hair styling agents.

〔Example〕

Hereinafter, the present invention will be described more specifically with reference to Examples, but the present invention is not limited thereto.

Example 1 1 kg of defatted rice bran was suspended in water 5 and stirred at room temperature for 1 hour. After standing, the supernatant was separated. The supernatant was passed through a paper to obtain 4000 ml of a liquid. This solution was concentrated under reduced pressure to obtain 1000 ml of extract A containing a water-soluble antioxidant.
Table 1 shows the mixing ratio of the extract A mixed with the emulsion.

Extract A, cetanol, stearic acid, glycerin and part of water were mixed and heated.

On the other hand, potassium hydroxide was dissolved in the remaining water, and this was added to the above-mentioned solution while stirring, and a fragrance was further added.
The mixture was cooled with stirring to obtain emulsions 1 and 2. The effect was evaluated by a sensory test. The results are shown in Table-2.

As described above, by incorporating the extract A, an emulsion having a high moisturizing effect on the skin could be obtained.

Example 2 1 kg of defatted rice bran was suspended in water 5 and liquefied enzyme spitase C
Adding P ₂₀ (Nagase) 0.6 g, stirred article was heated for 1 hour at 90 ° C.. After cooling, solid-liquid separation was performed to obtain 4800 mg of an extract. This extract was mixed with 8 g of proteolytic enzyme cochlase SS (Sankyo), stirred at 55 ° C for 5 hours, concentrated under reduced pressure to 1000 mg, and further heated at 85 ° C.
After heating for 15 seconds, 1000 mg of an extract B containing a water-soluble antioxidant containing protease degradation products was obtained. The extract B and the extract A of Example 1 were blended in a lotion. Table-Mixing ratio
3 is shown.

First, extract A, extract B, glycerin, citric acid, and sodium citrate were dissolved in distilled water. Separately, an ethanol flavor was dissolved and added to the above-mentioned aqueous solution to obtain a lotion. The effect was evaluated by a sensory test. The results are shown in Table-4.

As described above, by adding the extract A or the extract B, a lotion having a high moisturizing effect on the skin could be obtained. In addition, the lotion containing the extract B containing the protease degradation product showed a particularly remarkable moisturizing effect.

Example 3 The extract B obtained in Example 2 was blended in an emollient cream. The compounding ratio is shown in Table-5.

Extract B and propylene glycol were added to distilled water and heated. Separately, stearic acid, stearyl alcohol, reduced lanolin, olive oil, stearic acid glyceride, and polyoxyethylene cetyl ether were mixed and heated and dissolved while stirring. This was added to the above-mentioned dissolving solution with stirring, a flavor was further added, and the mixture was cooled with stirring to obtain emollient creams (nutritive creams) 1 and 2. The effect was evaluated by a sensory test. Table 6 shows the results.
It was shown to.

As described above, by incorporating the extract B, an emollient cream having a high moisturizing effect on the skin, a high oxidative stability and an excellent feeling upon use could be obtained.

〔The invention's effect〕

As described in detail above, the cosmetic of the present invention has excellent effects of moisturizing, retaining and activating skin functions, and preventing aging.

Claims (3)

(57) [Claims] A cosmetic comprising a water-soluble antioxidant obtained from a rice bran raw material. 2. The cosmetic according to claim 1, wherein the water-soluble antioxidant is obtained by extracting a rice bran raw material with a water-containing solvent. 3. The cosmetic according to claim 1, wherein said water-soluble antioxidant contains a protease degradation product of rice bran.