KR20160036202A - UV Protecting Cosmetic Composition Comprising Corn Cob Extract As Active Ingredient - Google Patents

Abstract

The present invention relates to an ultraviolet blocking cosmetic composition containing a corncob extract as an active ingredient. According to the present invention, the cosmetic composition exhibits ultraviolet blocking effects, antioxidant effects, anti-inflammatory effects, and skin improving effects, thereby securing the high value as a cosmetic ingredient.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cosmetic composition for protecting against UV rays containing an extract of corn onion as an active ingredient (UV Protecting Cosmetic Composition Comprising Corn Cob Extract As Active Ingredient)

The present invention relates to a cosmetic composition containing a corncob meal extract as an active ingredient and having an ultraviolet screening, antioxidant, anti-inflammatory and skin improving effect.

The ultraviolet rays contained in the sunlight are divided into long wavelength ultraviolet rays (UVA, 320 to 400 nm), medium ultraviolet rays (UVB, 280 to 320 nm) and short wavelength ultraviolet rays (UVC, 200 to 280 nm) Penetrates to the skin dermis layer, causing pigmentation such as erythema, spots and freckles, skin aging, black spot and skin cancer.

The short wavelength ultraviolet (UVA) and the medium ultraviolet (UVB) rays are absorbed in the atmospheric ozone layer and hardly reach the surface, while the long wavelength ultraviolet (UVA) And reaches the skin.

The long-wavelength ultraviolet rays affecting the skin break down the collagen and elastin of the skin dermis layer, causing pigmentation, phototoxicity, photoallergy, and skin dermis layer to cause skin aging, stain and dullness. The mid-wave ultraviolet rays are caused by sunburn (erythema, , Pigmentation, skin protein denaturation, and skin cell keratinization.

Accordingly, in order to protect the skin from harmful ultraviolet rays, a UV-blocking cosmetic composition having ultraviolet absorption and ultraviolet scattering effect has been developed.

For example, Korean Patent Laid-Open Publication No. 2011-0054736 discloses a composition having an ultraviolet shielding effect, wherein an organic substance such as a cinnamate derivative, a salicylic acid derivative and benzophenone is used as an ultraviolet absorber and an inorganic substance such as zinc oxide, titanium dioxide, Ultraviolet scattering agent.

However, the organic materials contained in the composition cause allergy, irritation and trouble of the skin, and the cosmetic composition becomes opaque with the inclusion of inorganic materials, and the feeling of use when applied to the skin is poor.

In order to solve the problems associated with the inclusion of such organic and inorganic materials as chemical components, the focus is on the development of a cosmetic composition containing a natural extract having an ultraviolet blocking effect as an active ingredient.

For example, Korean Patent No. 10-0858630 discloses a composition having an ultraviolet screening and anti-phototoxicity effect by containing a mung bean extract. However, the mung bean extract alone does not have an effect of ultraviolet screening, skin sedation and anti- In a small amount.

Accordingly, there is a need to develop a UV-blocking cosmetic composition capable of maximizing the ultraviolet shielding effect while eliminating the use of organic or inorganic materials that cause irritation.

Accordingly, the present inventors have made various efforts to develop a cosmetic composition having a high ultraviolet screening effect while containing a natural extract as an active ingredient. As a result, the present inventors have found that a corncob meal extract contains a polyphenol component and has a high free radical scavenging activity and ultraviolet- The present invention has been completed.

Accordingly, an object of the present invention is to provide a cosmetic composition for ultraviolet screening, which comprises, as an active ingredient, a natural extract capable of ultraviolet screening, antioxidation, anti-inflammation and skin improving effect.

To this end, the present invention provides a cosmetic composition for protecting against ultraviolet rays containing corncobberry extract as an active ingredient.

The cosmetic composition comprising the corncob meal extract of the present invention as an active ingredient has the effect of protecting against ultraviolet rays, antioxidant, anti-inflammation, and damaged skin, thus securing high value as a cosmetic ingredient.

Hereinafter, the present invention will be described in more detail.

In the present invention, a cosmetic composition containing corncob meal extract having an ultraviolet screening, antioxidant, anti-inflammatory and damaged skin improving effect as an active ingredient is presented.

Since the cosmetic composition according to the present invention contains a natural substance having an ultraviolet shielding function as an active ingredient unlike the cosmetic composition for protecting ultraviolet rays containing existing chemical components, problems caused by the addition of existing chemical ingredients are improved, And has an excellent effect.

The corn cob is an osseous tissue that can be seen from the center surrounded by the vascular bundles arranged in a tubular shape from the stem of the plant. The cornstarch comprises 6.7 to 14.9% moisture, 4.3 to 12.9% crude protein, 0.5 to 1.4% crude fat, 4.9 to 13.0% of ash and 27 to 54% of dietary fiber. Such corncobs include water-soluble dietary fibers and insoluble dietary fibers.

Preferably, the cosmetic composition of the present invention contains a mixed extract composed of Zanthoxylum rhesta extract as an active ingredient at the same time as cornstarch extract.

Zanthoxylum rhesta is a dicotyledonous plant which is distributed in the central part of the country and has a diameter of less than 1,400 m above sea level. The young leaves are used for food, the berries are used for medicinal or spice, The husks are used as spices.

In the case of the second phytomass extract which is extracted using the second phytomass, it is obtained by extracting from various organs or parts of the first phytomass. Specifically, the extract is obtained by extracting the leaves, flowers, stems, branches, roots, outposts, And the extract is extracted by adding an extraction solvent to at least one of the fruits. In the present invention, it is preferable to extract the bark from the bark of supergene.

The cosmetic composition for protecting against UV rays of the present invention is characterized by containing the above-mentioned superfine tree extract or the above-mentioned mixed extract as an active ingredient. Extraction solvents are added to the corncobs and superfine trees of the present invention, , More preferably mixed extracts mixed at a ratio of 1: 1 is preferably used.

Concretely, it is possible to add the above-mentioned phlox or corncobs in a solvent such as methanol, ethanol, isopropanol, butanol, ethylene, acetone, hexane, ether, chloroform, ethyl acetate, butyl acetate, dichloromethane, N, N-dimethylformamide, 1,3-butylene glycol, propylene glycol, and a mixture thereof may be added to the reaction mixture, followed by conventional cold extraction, ultrasonic extraction, reflux cooling, hot water extraction, room temperature extraction, warming extraction, supercritical extraction And the like. However, the present invention is not limited thereto.

The extraction temperature and time of the supernovae or corn cob in accordance with the present invention are generally adjusted by controlling the temperature at room temperature to 100 ° C for 1 to 100 hours. Depending on the added amount of the superfine tree and the corn cob, And the extracted extract is characterized by being subjected to filtration or purification and drying processes.

The filtration is a process of removing suspended solid particles from the extracted extract, and the particles are filtered using a cotton, nylon, or the like, or the suspension is removed using ultrafiltration, freeze filtration, centrifugation or the like.

The extract obtained by removing the suspended matter after filtration can be dried using a method such as freeze drying, vacuum drying, hot air drying, spray drying, vacuum drying, foam drying, high frequency drying or infrared drying, May be further subjected to grinding.

Accordingly, the extract is characterized by having a liquid phase, a concentrated solid phase, and a lyophilized powder phase, as the extract has additional steps such as drying and grinding according to the case after filtration.

As described above, the mixed extract consisting of the corncobs extract of the present invention or the corncobs extract and the superfine tree extract can be formulated into a cosmetic composition for ultraviolet screening as it has the effect of protecting against UV rays, antioxidation, anti-inflammation and damaged skin have.

When the extract or the mixed extract according to the present invention is contained in the cosmetic composition and is formulated, it is preferably contained in an amount of 0.001 to 5% by weight based on the total weight of the cosmetic composition for ultraviolet shielding. If it is added in an amount of 0.001% by weight or less, the effect of ultraviolet ray blocking, antioxidation, anti-inflammation and damaged skin improvement is difficult to manifest. If it is contained in an amount exceeding 5% by weight, This is because a problem occurs that it follows.

In addition, the cosmetic composition for UV screening according to the present invention may contain, in addition to the above-mentioned extract components, other components capable of synergistic effect on the main effect, within a range not impairing the intended main effect of the present invention .

The ingredients contained in the cosmetic composition for ultraviolet screening of the present invention contain ingredients commonly used in cosmetic compositions in addition to the above-mentioned effective ingredients, and include conventional additives such as stabilizers, solubilizers, vitamins, pigments and perfumes, ≪ / RTI >

The cosmetic composition of the present invention can be prepared in any form conventionally produced in the art and specifically includes a solution, a suspension, an emulsion, a gel, a lotion, an essence, a cream, a powder, a soap, a pack mask, , Foundation, spray, and the like.

In addition, the composition of the present invention can be used variously as an ultraviolet shielding cosmetic having an ultraviolet shielding effect. UV protection cosmetics include, for example, UV protection lotion, ultraviolet screening cream, ultraviolet screening spray, BB cream, makeup foundation, two way cake, spot, liquid foundation and concealer.

When the formulation of the present invention is a solution or an emulsion, a solvent, a dissolving agent or an emulsifying agent is used as a carrier component, and examples thereof include water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, , 3-butyl glycol oil, glycerol aliphatic ester, polyethylene glycol or sorbitan fatty acid esters.

When the formulation of the present invention is a suspension, a carrier such as water, a liquid diluent such as ethanol or propylene glycol, a suspension such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, Hydroxides, microcrystalline cellulose, bentonite, agar or tracant, etc. may be used.

When the formulation of the present invention is a cream or a gel, wax, paraffin, trachant, animal oil, starch, cellulose derivative, silicone, bentonite, polyethylene glycol, silica, zinc oxide or talc may be used as the carrier component.

When the formulation of the present invention is a powder or a spray, the carrier component may include a propellant such as silica, talc, aluminum hydroxide, lactose, calcium silicate, chlorofluorohydrocarbons, propane / butane or dimethyl ether.

When the formulation of the present invention is a surfactant-containing cleansing, it is preferable to use, as a carrier component, aliphatic alcohol sulfate, aliphatic alcohol ether sulfate, sulfosuccinic acid monoester, imidazolinium derivative, isethionate, methyltaurate, sarcosinate, fatty acid amide ether Aliphatic alcohols, alkylamidobetaines, fatty acid glycerides, fatty acid diethanolamides, vegetable oils, lanolin derivatives, or ethoxylated glycerol fatty acid esters.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided to further understand the present invention, and the present invention is not limited by the examples.

Preparation Example 1: Preparation of corncobs extract

The corncobs were obtained from 20, 40, 60, and 80% ethanol. First, 30 g of cornstarch was added to a 500 ml flask, and 250 ml of ethanol was added and heated at 78 캜 for 2 hours. Thereafter, filtration was carried out and the final corncob meal extract was obtained by using an evaporator.

Preparation Example 2: Preparation of an extract of cherrywood

100% methanol was added to extract the peel shells. After that, the extract was filtered and dried under vacuum condition of 40 ~ 50 ℃ to obtain 65g of extract.

The obtained extract was lyophilized in vacuo using hexane, chloroform, ethyl acetate and butanol, which are organic solvents having various polarities, to obtain 13 g of a hexane fraction, 14.2 g of a chloroform fraction, 3 g of ethyl acetate and 4.8 g of a butanol fraction, And stored at -20 ° C until used in the test. In the experiment, ethyl acetate fraction was used.

Preparation Example 3: Preparation of mixed extract

The corncob bean extract and the bamboo shoot extract prepared in Preparation Examples 1 and 2 were mixed at a ratio of 1: 1. Ethyl acetate fractions were used as the extracts.

Experimental Example 1: Measurement of polyphenol content

The polyphenol contents of the extracts of Preparations 1 to 3 were measured.

The content of the extract was measured by modifying the Folin-Denis method. First, 80 μl of the sample solution dissolved in methanol at a concentration of 1 mg / ml and 80 μl of Folin-Denis reagent were mixed and reacted for 3 minutes. Then, 80 μl of 10% Na 2 CO 3 was mixed and reacted in a dark room for 60 minutes Subsequently, 120 쨉 l of the supernatant was transferred to a 96-well plate and the absorbance at 700 nm was measured. The content of polyphenol was determined by using gallic acid, which is a standard substance, as a standard curve. The results are shown in Tables 1 and 2 below.

Preparation Example 1 Polyphenol content of corn onion extract Ethanol 20% Ethanol 40% Ethanol 60% Ethanol 80% Total polyphenol content 32.5 ± 0.15 mg 42.7 ± 0.39 mg 55.9 ± 0.62 mg 63.5 ± 0.41 mg

Preparation Example 2 Polyphenol Content of Extracts of Pinus densiflora Ethyl acetate Butanol chloroform Hexane Total polyphenol content 21.12 + 0.02 mg 15.47 + - 0.221 mg 6.87 ± 0.32 mg 4.898 + 0.19 mg

As shown in Tables 1 and 2, it was confirmed that the extracts of Preparations 1 and 2 of the present invention extracting corncobs and supernatant of the present invention contained a polyphenol component having antioxidant effect

Experimental Example 2: Measurement of antioxidative effect

The antioxidative effect of DPPH (2,2-Diphenyl-1-picrylhydrazyl) method was measured by the electron donating ability of each of Preparations 1 to 3 above. The electron donating ability is a measure for inhibiting oxidation by donating electrons to free radicals. When the electron donating ability to DPPH is high, it has a high antioxidant activity and a scavenging effect on other radicals including active oxygen.

The free radical scavenging ability of the diluted ascorbic acid, which is an antioxidant commonly used in the art, was diluted to 0.1% as shown in Table 3 below.

Preparation Example 1 Preparation Example 2 Preparation Example 3 sample Corn onion extract Chestnut tree
extract Chestnut tree
+ Corncobs extract blend density(%) 0.1 0.1 0.1

2 ml of the diluted extract of Table 3 was added to 1 ml of 0.2 mM DPPH ethanol solution, mixed well at room temperature for 10 seconds, and reacted at 37 캜 for 30 minutes. Thereafter, the absorbance was measured using a UV / VIS spectrometer at 517 nm and the electron donating ability calculated according to the following equation is shown in Table 4 below.

Free radical scavenging ability (%) Ascorbic acid Preparation Example 1 Preparation Example 2 Preparation Example 3 81% 75% 83% 95%

As shown in Table 4, the free radical scavenging ability of the extracts prepared in Preparation Examples 1 and 2 was almost equal to that of ascorbic acid, which is an antioxidant generally used in the related art. Especially, in the mixed extract of Preparation Example 3, ascorbic acid It has a higher free radical scavenging function than an acid.

Experimental Example 3: Measurement of ultraviolet shielding index

A cosmetic composition was prepared in the usual manner according to the composition shown in Table 5 below using OMC (octyl 4-methoxycinnamate), which is a conventional UV absorber, instead of the extracts prepared in Preparation Examples 1 to 3, and the UV blocking index Respectively.

ingredient Example
One Example
2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Chestnut extract - - 3 - - Corn onion extract 3 - - - - Extract of tile ground - - - - - Fennel, corn sprout extract blend - 3 - - - OMC - - - - 1.5 glycerin 4 4 4 4 4 Butylenecylicol 4 4 4 4 4 Beta Glucan 6 6 6 6 6 Carbomer 0.1 0.1 0.1 0.1 0.1 Caprylic Capricc
Triglyceride 9 9 9 9 9 Squalene 0.5 0.5 0.5 0.5 0.5 Stearyl glucoside 1.5 1.5 1.5 1.5 1.5 Sorbitan stearate 0.4 0.4 0.4 0.4 0.4 Stearyl alcohol 1.0 1.0 1.0 1.0 1.0 Purified water Balance Balance Balance Balance Balance system 100.0 100.0 100.0 100.0 100.0

Here, the UVB blocking effect is expressed by the Sun Protection Factor (SPF), which is the blocking index of ultraviolet B, where the ultraviolet screening agent is used to treat the ultraviolet ray amount required to produce the MED (minimum erythema) on untreated skin Is defined as the amount of ultraviolet light required to produce MED on the skin, Therefore, the higher the SPF, the better the UVB blocking effect. Here, MED refers to Minimal Erythemal Dose ("MED"), which is the minimum amount of erythema that causes skin erythema.

In order to confirm the ultraviolet shielding effect of Examples 1 to 2 and Comparative Examples 1 to 3, Sun Protection Factor (SPF) was measured by a general method reported in literature (J. Soc. Cosmet. Chem., 40, (SPF Analyzer, Optometrics USA, SPF290S) in accordance with the following formula, and the UV blocking index results are shown in Table 6 below.

Sun Protection Factor (SPF) Example 1 18 Example 2 25 Comparative Example 1 21 Comparative Example 2 6 Comparative Example 3 30

As shown in Table 6, the cosmetic compositions of Comparative Examples 1 and 2 had lower UV blocking index than the cosmetic composition of Comparative Example 3 prepared by containing the conventional OMC chemical components. However, the corncobule extract of the present invention The cosmetic compositions of Examples 1 and 2 containing a mixed extract as an active ingredient showed a UV blocking index substantially similar to that of the cosmetic composition of Comparative Example 3 prepared by containing OMC as a chemical component serving as a conventional UVA blocking agent Able to know.

Claims (10)

A cosmetic composition for protecting against UV rays containing an extract of corn cob as an active ingredient. [Claim 3] The cosmetic composition according to claim 1, wherein the cosmetic composition comprises a mixed extract comprising an extract of corn cob and a extract of zanthoxylum rhesta as an active ingredient. [Claim 3] The cosmetic composition for protecting ultraviolet rays according to claim 2, wherein the mixed extract is an extract mixed at a ratio of 1: 1. The cosmetic composition for protecting ultraviolet rays according to claim 1, wherein the extract contains 0.001 to 5.0% by weight based on the total weight of the cosmetic composition for ultraviolet shielding. The cosmetic composition according to claim 2, wherein the mixed extract is contained in an amount of 0.001 to 5.0% by weight based on the total weight of the cosmetic composition for ultraviolet screening. The cosmetic composition for protecting ultraviolet rays according to claim 1 or 2, wherein the extract has a liquid phase, a concentrated solid phase and a lyophilized powder form. The method according to claim 1 or 2, wherein the extract is selected from the group consisting of methanol, ethanol, isopropanol, butanol, ethylene, acetone, hexane, ether, chloroform, ethyl acetate, butyl acetate, dichloromethane, N, N-dimethylformamide, Wherein the cosmetic composition is extracted by adding an extraction solvent selected from the group consisting of glycerin, glycerin, glycerin, glycerin, glycerin, glycerin, glycerin, glycerin, glycerin, The cosmetic composition for protecting ultraviolet rays according to claim 1 or 2, wherein the extract is extracted from a cold extraction, an ultrasonic extraction, a reflux cooling extraction, a hot water extraction, a room temperature extraction, a warming extraction and a supercritical extraction method. The cosmetic composition for protecting ultraviolet rays according to claim 1 or 2, wherein the extract has an antioxidative effect. The cosmetic composition according to any one of claims 1 to 9, wherein the cosmetic composition is a solution, suspension, emulsion, gel, lotion, essence, cream, powder, soap, pack mask, cleansing oil, foundation, Wherein the cosmetic composition is at least one kind selected from the group consisting of: