JP2814094B2 - Cosmetics containing acerola extract - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cosmetic product containing an extract extracted from the fruit of acerola (Acerola, scientific name: Malpighia glabra L.), which is a fruit tree of the genus Malpighia. The major feature of this extract is that it contains natural L-ascorbic acid in a larger amount than other fruit extracts.

<Conventional technology> Conventionally, L-ascorbic acid has been used to strengthen tissues and capillaries, inhibit melanin formation, or form collagen, etc.
Numerous physiological and pharmacological actions are known and are frequently used in the field of cosmetics. On the other hand, in recent years, there has been a strong tendency to prefer natural products as one component of cosmetic raw materials.

Until now, some plant extracts containing natural L-ascorbic acid have been known, such as lemon extract and apple extract, but almost no L-ascorbic acid concentration of 0.1% or more has been found. In addition, it is usually partially decomposed and reduced during the extraction process. Alternatively, when a product containing high L-ascorbic acid is to be obtained by concentration, the decomposition proceeds further, and the coexisting components also become high in concentration and undergo a chemical change such as a Maillard reaction, resulting in a drawback that they become dark brown.

<Problems to be Solved by the Invention> The present invention is to provide a novel cosmetic product which is rich in L-ascorbic acid derived from fresh acerola fruit and is blended with a stable acerola extract as a raw material. Aim.

<Means for solving the problems> Acerola fruits contain various useful substances such as various vitamins, organic acids, minerals, flavonoid glycosides, and pectin. Among them, the content of L-ascorbic acid is particularly high. The average is 1.0% or more (see Table 1).

From this fact, it is possible to extract the L-ascorbic acid contained in a large amount without losing it, and to stabilize the L-ascorbic acid possessed by the fruit even when used in any cosmetics. There is a need for an extraction method that makes use of the shape as much as possible. Hereinafter, the extraction method will be described with a few examples.

<Extraction method 1> Fresh acerola fruit or a frozen product thereof is washed with water, and the precipitate is removed by filtration, decantation or the like, and a clear supernatant is obtained. This is left as it is or after decolorization with activated carbon, and then allowed to stand, and after removing the resulting precipitate,
After passing through a membrane filter having a pore size of 0.22 μm, aseptic filling is performed. This extract contains most of the water-soluble components, and there are many useful components.

<Extraction method 2> A solvent such as glycerin, 1,3-butylene glycol, propylene glycol, ethanol, or water alone or a mixture thereof is added to the suspension obtained in the same manner as in Extraction method 1 as an extraction solvent. After well stirring, immerse and extract at low temperature. Next, the suspension is clarified by filtration, decantation or the like, filtered through a membrane filter having a pore size of 0.22 μm, and then subjected to aseptic filling. This extract can be selected according to the purpose by changing the solvent used.

<Extraction method 3> The extract extracted by extraction method 1 or 2 is re-extracted with another solvent to remove some components such as pectin, and then filled in the same manner. By adjusting the combination of the solvents for the extract, it is possible to select the most stable conditions among the components, especially L-ascorbic acid, when blending it into various cosmetics.

<Effect> The extracts obtained by the extraction methods 1 to 3 are all water-soluble, and have a property that precipitation hardly occurs even with time or by heating. In addition, it shows good stability against fluctuations in pH and can be easily used as a raw material for cosmetics. Cosmetics containing this extract have a whitening effect and activation of skin and capillaries due to the tyrosinase activity inhibitory action of L-ascorbic acid. In addition, the moisturizing effect and the astringent effect of the amino acid, organic acid, sugar and pectin in the present extract can be obtained, and the aromaticity of the product can be utilized.

Next, the use in cosmetics will be described by way of examples, but the present invention is not limited to these examples.

<Example 1> Manufacturing method of lotion Glycerin 5.0% Propylene glycol 4.0 Oleyl alcohol 0.1 Polyoxyethylene sorbitan monolaurate 1.5 Polyoxyethylene lauryl ether 0.5 Ethanol 10.0 Perfume 0.1 Colorant Appropriate amount Preservative / UV absorber Appropriate amount Extraction method 1 The total amount is made 100% with 0.3 to 5.0 purified water obtained in the steps (3) to (3).

<Example 2> Production method of emulsion Stearic acid 0.2% Cetanol 1.5 Vaseline 3.0 Lanolin alcohol 2.0 Liquid paraffin 10.0 Polyoxyethylene monooleate 2.0 Perfume 0.5 Preservative / antioxidant Appropriate amount Glycerin 3.0 Propylene glycol 5.0 Triethanolamine 1.0 Extraction Extract 0.3 to 5.0 obtained by methods 1 to 3 Make the total amount 100% with purified water.

Example 3 Cream Production Method Stearic Acid 2.0% Stearin Alcohol 7.0 Reduced Lanolin 2.0 Squalane 5.0 Octyldodecanol 6.0 Polyoxyethylene Cetyl Ether 3.0 Lipophilic Glycerin Monostearate 2.0 Fragrance 0.3 Preservative / Antioxidant Proper Propylene Glycol 5.0 Extracts obtained by extraction methods 1 to 3 0.3 to 5.0 Make the total amount 100% with purified water.

Claims (1)

(57) [Claims] 1. A cosmetic product comprising an extract extracted from the fruit of acerola.