KR20090044338A - Cosmetic composition for protecting comprising blue lotus extracts as active ingredient - Google Patents

Abstract

The present invention provides a cosmetic composition for skin protection containing blue lotus extract as an active ingredient. Blue Lotus extract of the present invention protects the skin that can be damaged by ultraviolet light, and can inhibit cell death and skin cell DNA damage. Therefore, by applying a cosmetic containing the Blue Lotus extract of the present invention to the skin it is possible to protect the skin from skin damage by ultraviolet rays and the like.

Blue Lotus, UV, Skin Protection, Photo Aging, Cosmetic Composition

Description

Cosmetic composition for skin protection containing Blue Lotus extract as an active ingredient {Cosmetic Composition for Protecting Comprising Blue Lotus extracts as Active Ingredient}

The present invention relates to a cosmetic composition for skin protection containing blue lotus extract as an active ingredient, and more particularly, to a skin protective cosmetic composition containing blue lotus extract to protect DNA and skin damaged by ultraviolet rays.

Most people easily respond to daylight during growth, but as the skin tissue changes gradually with age, roughness, wrinkles, pigmentation spots, poor color, diarrhea, capillary dilatation, sunspots, Symptoms include purpura and easy bruises, atrophy, fibrotic bleaching sites, and severely precancerous and malignant tumors.

Ultraviolet rays are divided into UVA, UVB, and UVC zones. On the earth, only UVA and UVB can reach this function. The UVC region is blocked by the ozone layer, but recently it is known to reach the earth due to environmental pollution and cause skin cancer.

Ultraviolet rays are the most important factor in skin aging, and recently, many studies related to aging due to ultraviolet rays, or photoaging, have been conducted, and various methods for preventing them have been introduced into the cosmetic industry. Photo aging refers to skin damage caused by ultraviolet rays and various aging phenomena (wrinkle formation, elasticity reduction, pigmentation, skin drying), etc., in the skin in which the ability to respond to light is weakened. Therefore, in order to prevent skin aging, it is very important to minimize the skin damage caused by the ultraviolet rays.

Keratinocytes in skin cells secrete inflammatory cytokines when irradiated with UV rays and induce oxidative stress to activate various protein kinases and phospholipases in cells. These activated enzymes hydrolyze cell membrane lipids to secrete arachidonic acid. The secreted arachidonic acid is changed to prostaglandin E2 (PGE2) by the action of cyclooxygenase. The arachidonic acid and PGE2 thus formed cooperate with cytokines to cause various inflammatory reactions, including redness, in the skin and ultimately promote aging of the skin. In addition, the fibroblasts of the skin cells are activated by a process similar to the activation of keratinocytes described above by irradiation of ultraviolet rays, and are killed as the amount of ultraviolet rays increases, and DNA damages and ultimately causes skin cancer. And promote aging. In other words, since ultraviolet rays can cause redness of the skin, immunosuppression, wrinkle formation, and ultimately skin aging and skin cancer, blocking and preventing ultraviolet irradiation are important factors in preventing skin cancer and delaying aging.

Recently, the amount of ultraviolet rays reaching the ground is increased due to the destruction of the ozone layer due to environmental pollution such as air pollution, and the area of ultraviolet rays is also changed to increase skin aging and skin cancer, and is expected to increase further in the future. Therefore, protecting the skin from ultraviolet rays is a very important part of the cosmetic field, and many cosmetic manufacturers are doing a lot of research to release related products. As a method currently used, a simple sunscreen or a UV absorber is used to prevent damage from ultraviolet rays, and recently, these sunscreens themselves have been reported to have a possibility of skin cancer by causing mutations.

Since skin damage caused by ultraviolet rays is ultimately associated with skin aging, a way to protect them is one of the cosmetic industry's concerns. In order to prevent skin damage by ultraviolet rays, there is a method of inhibiting free radicals or inhibiting production, and the other is to block ultraviolet rays directly. Most UV-related products have a feature to block UV rays, and recently, many methods using natural products to suppress free radicals generated by UV rays are used.

Therefore, the present inventors not only show a simple blocking action like a conventional sunscreen, but also have a low skin irritation and excellent UV blocking effect, so as to seek a plant bioactive substance that can prevent skin aging and skin cancer in the long term. As a result of research efforts, it was confirmed that the Blue Lotus extract has an excellent effect on preventing skin damage caused by ultraviolet rays and completed the present invention.

Therefore, it is an object of the present invention to provide a cosmetic composition for skin protection containing blue lotus extract as an active ingredient.

The present invention relates to a cosmetic composition for skin protection containing blue lotus extract as an active ingredient. The Blue Lotus extract of the present invention can inhibit skin damage caused by ultraviolet rays, and can inhibit cell death and skin cell DNA damage. Therefore, it is possible to protect the skin from skin damage caused by ultraviolet rays by applying the cosmetic to which the Blue Lotus extract of the present invention is applied to the skin.

According to a preferred embodiment of the present invention, the present invention relates to a cosmetic composition for skin protection containing blue lotus extract as an active ingredient.

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

Blue Lotus extract used in the present invention refers to the extract of Blue Lotus belonging to the family Nymphaeaceae. Blue lotus ( Nymphaea caerulea ) is a perennial plant native to South Africa, including the Thai water lily (Nymphaea coerulea) and the Indian water lily (Nymphaea, stellata). Water lilies and plants are very large, wild plants with leaves about 30cm in diameter, growing on islands in southern and eastern Asia. This plant, commonly called water lily, is called blue lotus in blue flowers.

According to a preferred embodiment of the present invention, the Blue Lotus extract is added to the dried Blue Lotus flowers and leaves hydrated ethanol for several days at room temperature, then filtered and the filtrate is concentrated in vacuo to obtain a dry extract.

In the cosmetic composition of the present invention, Blue Lotus extract means that obtained by extracting from various organs such as leaves, stems, roots, flowers, seeds of the plant in a conventional manner, preferably means an extract obtained from leaves or flowers. .

In addition, the Blue Lotus of the present invention can be used by drying it or used as it is, preferably used by drying. In this case, the drying method may be dried using a conventional method known in the art, such as natural drying or hot air drying.

The Blue Lotus extract of the present invention may be prepared according to conventional methods known in the art, that is, using conventional solvents, under conditions of conventional temperature and pressure.

The Blue Lotus extract may be a variety of solvents, such as water, anhydrous or hydrous lower alcohols having 1 to 4 carbon atoms (eg methanol, ethanol, propanol, butanol, etc.), acetone, ethyl acetate, chloroform or 1,3-butyl It is obtained by using an extraction solvent selected from the group consisting of lenglycols, preferably obtained by using a suitable mixed solution of water and ethanol, and more preferably using a mixed solution of 3: 7 mixed with water and ethanol. It is obtained by.

On the other hand, it will be apparent to those skilled in the art that the extract of the present invention can be obtained in addition to the above-described extraction solvents, extracts having substantially the same effect using other extraction solvents.

In addition, the extract of the present invention includes not only the extract by the above-mentioned extraction solvent, but also the extract that has undergone a conventional purification process. For example, separation using an ultrafiltration membrane having a constant molecular weight cut-off value, separation by various chromatography (manufactured for separation according to size, charge, hydrophobicity or affinity), etc. The obtained fraction is also included in the Blue Lotus extract of the present invention.

The Blue Lotus extract of the present invention may be prepared in a powder state by an additional process such as distillation under reduced pressure, freeze drying or spray drying.

The Blue Lotus extract of the present invention has an activity of protecting the skin from skin damage caused by external factors such as ultraviolet rays.

The external factors include ultraviolet rays, stress, and external harmful chemicals.These factors generate free radicals (eg, hydroxyl radicals, superoxide radicals, free radicals, and hydrogen peroxide) to increase oxidative stress in the skin, causing inflammation, Skin cell death and skin cell DNA damage occur and as a result promote skin cancer development or aging of the skin.

In addition, the composition of the present invention may be added in small amounts alone or in combination with all the organic sunscreens or inorganic sunscreens admitted to the Food and Drug Administration for the purpose of adjusting the stability, unit price or skin defects of the formulation. Preferred organic sunscreens for use in the cosmetic compositions of the present invention are octylmethoxycinnamate, glyceryl pava, drometrizole, dromethazole trisiloxane, digaloyltrioleate, disodiumphenyldibenzimidazoletetrasulfo Nate, 3- (4-methylbenzylidene) camphor, menthyl anthranilate, benzophenone-3, benzophenone-4, benzophenone-8, butylmethoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine , Methylenebisbenzotriazolyltetramethylbutyl phenol, synoxate, octocrylene, octyldimethylmethyl, octylsalicylate, octyltriazone, isoamyl-p-methoxycinnamate, paraaminobenzoic acid, 2- It may be selected from the group consisting of phenylbenzimidazole-5-sulfonic acid and homosalate. In addition, preferred inorganic sunscreens for use in the cosmetic composition of the present invention include zinc oxide or titanium oxide.

The components included in the cosmetic composition of the present invention include components conventionally used in cosmetic compositions in addition to the Blue Lotus extract as an active ingredient, and include, for example, conventional auxiliaries such as stabilizers, solubilizers, vitamins, pigments and flavors, and carriers. Include.

In addition, the present invention is to protect the skin by applying the Blue Lotus extract to the cosmetics in order to suppress skin cell damage, in particular DNA damage caused by ultraviolet rays and the like to commercialize it.

The term "skin damage" of the present invention means that the skin does not perform its normal function, and includes skin components, such as collagen and elastin damage, skin cell function damage and skin cell death, and the like.

The skin cells of the present invention include all cells present in the skin, and are preferably keratinocytes and fibroblasts.

The term "skin protection" of the present invention includes preventing damage to the skin and ameliorating the damaged skin.

The Blue Lotus extract of the present invention removes the oxidative stress that the skin receives from ultraviolet rays, thereby inhibiting the death of skin cells and preventing DNA damage, thereby protecting the skin, and in the long term, prevents the occurrence of skin cancer and skin aging. It becomes possible.

Blue Lotus extract of the present invention can achieve the effect by topical application or spraying on the skin. Therefore, according to a preferred embodiment of the present invention, the composition of the present invention may be prepared in the form of cosmetic compositions such as creams, lotions and softening water or pharmaceutical compositions such as sprays and ointments.

According to a preferred embodiment of the present invention, the content of the Blue Lotus extract in the composition of the present invention is 0.0001-20.0% by weight and preferably 0.001-10.0% by weight relative to the total weight of the cosmetic composition. If the content is less than the expected effect is difficult to appear, when the content exceeds the effect does not increase any more, there is a problem that the stabilization of the formulation is difficult, manufacturing cost is expensive.

When the composition of the present invention is formulated as a cosmetic, the components included in the cosmetic composition of the present invention include components conventionally used in cosmetic compositions in addition to the Blue Lotus extract as an active ingredient, such as antioxidants, stabilizers, solubilizers, Conventional adjuvants such as vitamins, pigments and flavorings, and carriers.

The cosmetic composition of the present invention may further include a thickener, a skin protectant, a moisturizer, a neutralizer, a pH adjuster, a solubilizer, a preservative, and a solvent as needed in addition to the above components.

The cosmetic composition for protecting the skin of the present invention may be prepared in any formulation conventionally prepared in the art, for example, solutions, suspensions, emulsions, pastes, gels, creams, lotions, powders, soaps, surfactants- It may be formulated as containing cleansing, oil, powder foundation, emulsion foundation, wax foundation, spray, and the like, but is not limited thereto. More specifically, it may be prepared in the form of a flexible lotion, nutrition lotion, nutrition cream, massage cream, essence, eye cream, cleansing cream, cleansing foam, cleansing water, pack, spray or powder.

When the formulation of the present invention is a paste, cream or gel, animal oils, vegetable oils, waxes, paraffins, starches, trachants, cellulose derivatives, polyethylene glycols, silicones, bentonites, silicas, talc or zinc oxide may be used as carrier components. Can be.

When the formulation of the present invention is a powder or a spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used, in particular, in the case of spray, additionally chlorofluoro hydrocarbon, propane Propellant such as butane or dimethyl ether.

When the formulation of the present invention is a solution or emulsion, a solvent, solubilizer or emulsifier is used as the carrier component, such as water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1 Fatty acid esters of, 3-butylglycol oil, glycerol aliphatic ester, polyethylene glycol or sorbitan.

When the formulation of the present invention is a suspension, liquid carrier diluents such as water, ethanol or propylene glycol, suspending agents such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, microcrystals Soluble cellulose, aluminum metahydroxy, bentonite, agar or tracant and the like can be used.

When the formulation of the present invention is a surfactant-containing cleansing, the carrier component is an aliphatic alcohol sulfate, an aliphatic alcohol ether sulfate, a sulfosuccinic acid monoester, an isethionate, an imidazolinium derivative, a methyltaurate, a sarcosinate, a fatty acid amide. Ether sulfates, alkylamidobetaines, aliphatic alcohols, fatty acid glycerides, fatty acid diethanolamides, vegetable oils, lanolin derivatives or ethoxylated glycerol fatty acid esters and the like can be used.

Therefore, the composition of the present invention can be usefully used as a cosmetic for skin protection by preventing skin damage and oxidative stress caused by ultraviolet rays.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention in more detail, it is to those of ordinary skill in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. Will be self-evident.

Production Example  One.

First, dry the Blue Lotus leaves and flowers, then shred it finely and weigh 100g. Add 600 g of a solvent mixed with water and ethanol 3: 7 (v: v), and soak for 5 days to extract the active ingredient. After extracting for 5 days, the resultant was filtered with a 300 mesh filter cloth, again filtered with a filter paper Whatman 5, and dried with a rotary evaporator to obtain a dry weight of 7.5 g. This dried powder was prepared by dissolving in 30% 1,3-butylene glycol.

Preparation Example 2-11.

First, dry the Blue Lotus leaves and flowers, then shred it finely and weigh 100g. While changing the concentrations of water and ethanol, 600g of a mixture of two solvents is added and soaked for 5 days to extract the active ingredient. After extracting for 5 days, the resultant was filtered with a 300 mesh filter cloth, and again filtered with a filter paper Whatman 5, and dried with a rotary evaporator to obtain a dry weight as shown in the following table.

Ethanol Content (%) Dry weight (g) Preparation Example 2 0 5.23 Preparation Example 3 10 5.68 Preparation Example 4 20 6.13 Preparation Example 5 30 6.12 Preparation Example 6 40 6.23 Preparation Example 7 50 6.45 Preparation Example 8 60 6.13 Preparation Example 9 80 7.65 Preparation Example 10 90 7.56 Preparation Example 11 100 7.35

Preparation Example 12

First, dry the Blue Lotus leaves and flowers, then shred it finely and weigh 100g. Here, 600 g of a solvent mixed with water and 1,3 butylene glycol in a 5: 5 (v: v) solution was added and then immersed for 5 days to extract the active ingredient. After extracting for 5 days, filtered through a 300 mesh filter cloth, and filtered again with Whatman No. 5 filter paper, to obtain 580 g of Blue Lotus extract. The loss on drying at this time is 12.5 g / 100 ml. In addition, a variety of Blue Lotus extract can be prepared by varying the ratio of water and butylene glycol solution as described above.

Experimental Example 1 Inhibition of Cell Death of Human Keratinocytes by UV Light

When ultraviolet rays are irradiated to keratinocytes, free radicals are released from the cells. In order to artificially induce the above phenomenon, human normal keratinocytes (Korea Cell Line Bank) are inoculated to 1 x 10 ⁴ cells in each well of a 48-well microplate, and DMEM medium (Sigma, US) Incubated at 37 ° C. for 24 hours. After irradiating ultraviolet (UVB) to each well, the Blue Lotus extract was adjusted to each concentration [0.1, 0.5, 1.0, 2.0% (v / v)] and added to the culture medium. Confirmation was made by MTT assay.

Blue Lotus Extract of Preparation Example 1 (%) Cell survival rate (%) UV-irradiated cells UV irradiation cell 0.0 100.0 2.5 0.1 101.2 24.6 0.5 102.2 35.8 1.0 105.5 63.5 2.0 108.5 93.3

As can be seen from the results of Table 2, the Blue Lotus extract of the present invention inhibited the killing of keratinocytes by ultraviolet rays in a concentration-dependent manner, the effect was excellent.

Experimental Example 2: Inhibition Effect of Human Fibroblast Death by UV Light

When ultraviolet light is irradiated to fibroblasts, free radicals are released from the cells and the cells are damaged. In order to artificially induce this phenomenon, human fibroblasts (Korea Cell Line Bank) are inoculated to 1 x 10 ⁴ cells in each well of a 48-well microplate, and DMEM medium (Sigma, US) Incubated at 37 ° C. for 24 hours. After irradiating ultraviolet (UVA) to each well, the blue Lotus extract of Preparation Example 1 was adjusted to concentration [0.1, 0.5, 1.0, 2.0% (v / v)] and added to the culture solution after 24 hours. Post cell activity was confirmed by MTT assay.

Blue Lotus Extract of Preparation Example 1 (%) Cell survival rate (%) UV-irradiated cells UV irradiation cell 0.0 100.0 2.5 0.1 105.3 28.8 0.5 103.5 39.5 1.0 100.7 76.3 2.0 100.5 90.2

As can be seen from the results of Table 3, the Blue Lotus extract of the present invention inhibited the death of fibroblasts by ultraviolet rays in a concentration-dependent manner, the effect was very excellent.

Experimental Example 3 Inhibition Effect of Fibroblast DNA Damaged by UV Light

Fibroblasts cause DNA damage by UV irradiation, which is an important factor in preventing skin cancer and delaying aging. Therefore, the following experiment was conducted to determine whether the Blue Lotus extract of the present invention has the effect of inhibiting the DNA damage induction.

24-well cell culture plates were seeded with fibroblasts (Korea Cell Line Bank) at 5 × 10 ⁴ cells / well. After irradiating ultraviolet (UVA) to each well, the Blue Lotus extract of Preparation Example 1 was adjusted to each concentration [1.0, 2.0% (v / v)] and added to the culture medium. Comet analysis). Tail length (μm) was measured using an image analyzer (Komet, 3.1, Kinetic imaging, England), and the DNA damage was analyzed using the scale.

Blue Lotus extract of Preparation Example 1 (%) Average tail length (μm) Control 50.5 0 (ultraviolet irradiation) 162.3 1.0 60.3 2.0 51.5

As can be seen from the results of Table 4, the Blue Lotus extract of the present invention inhibited the DNA damage of the fibroblasts due to ultraviolet rays in a concentration-dependent manner, the effect was excellent.

Formulation Example 1 Flexible Lotion

Formulation examples of the flexible lotion (skin) in the cosmetic containing Blue Lotus extract of Preparation Example 1 are as follows:

ingredient Content (% by weight) Blue Lotus Extract 0.5 1,3-butylene glycol 5.2 Oleyl alcohol 1.5 ethanol 3.2 Polysorbate 20 3.2 Benzophenone-9 2.0 Carboxyl Vinyl Polymer 1.0 glycerin 3.5 incense a very small amount antiseptic a very small amount Purified water Remaining amount system 100

Formulation example  2. nutrition lotion

Formulation example of the nourishing lotion (milk lotion) in the cosmetic containing the Blue Lotus extract of Preparation Example 1 is as follows:

ingredient Content (% by weight) Blue Lotus Extract 0.6 glycerin 5.1 Propylene glycol 4.2 Tocopheryl Acetate 3.0 Liquid paraffin 4.6 Triethanolamine 1.0 Squalane 3.1 Macadamia Nut Oil 2.5 Polysorbate 60 1.6 Sorbitan sesquirrolate 1.6 Propylparaben 0.6 Carboxyl Vinyl Polymer 1.5 incense a very small amount antiseptic a very small amount Purified water Remaining amount system 100

Formulation example  3. Nutrition Cream

Formulation example of the nourishing cream in the cosmetic containing Blue Lotus extract of Preparation Example 1 is as follows:

Ingredients (content: weight%) Example 1 Comparative Example 1 Blue Lotus Extract 2.0 - glycerin 4.0 4.0 vaseline 3.5 3.5 Triethanolamine 2.1 2.1 Liquid paraffin 5.3 5.3 Squalane 3.0 3.0 Beeswax 2.6 2.6 Tocopheryl Acetate 5.4 5.4 Polysorbate 60 3.2 3.2 Carboxyl Vinyl Polymer 1.0 1.0 Sorbitan sesquioleate 3.1 3.1 incense a very small amount a very small amount antiseptic a very small amount a very small amount Purified water Remaining amount Remaining amount system 100 100

Formulation Example 4 Massage Cream

Formulation example of the massage cream in the cosmetic preparation containing the Blue Lotus extract of Preparation Example 1 is as follows:

ingredient Content (% by weight) Blue Lotus Extract 0.5 glycerin 4.0 vaseline 3.5 Triethanolamine 0.5 Liquid paraffin 24.0 Squalane 3.0 Beeswax 2.1 Tocopheryl Acetate 0.1 Polysorbate 60 2.4 Carboxyl Vinyl Polymer 1.0 Sorbitan sesquioleate 2.3 incense a very small amount antiseptic a very small amount Purified water Remaining amount system 100

Formulation Example 5 Pack

Formulation examples of the pack in the cosmetic containing the Blue Lotus extract of Preparation Example 1 are as follows:

ingredient Content (% by weight) Blue Lotus Extract 1.0 Ethyl alcohol 3.0 EDTA-2Na 0.02 Propylene glycol 5.1 Glyceline 4.5 Cabopol 1.0 Polyoxide 0.1 antiseptic a very small amount incense a very small amount Purified water Remaining amount system 100

Experimental Example 4 . Skin protection against UV rays

In order to confirm the protection of the skin by ultraviolet rays of the cosmetics containing the Blue Lotus extract of the present invention was carried out as follows. The experiment was conducted on 30 subjects, and artificially irradiated with UV light on human skin (1.5MED), Comparative Example 1 in which Blue Lotus extract was replaced with purified water in Example 1 and Formulation Example 3 prepared by the method of Formulation Example 3 Cosmetics were applied at 6 hour intervals. After 48 hours of UV irradiation, the degree of erythema formation was visually evaluated, and the device was also evaluated for objective evaluation. Instrument evaluation was measured using a skin colorimeter (Minolta, Japan), the results are shown in Table 10 below.

Erythema production degree Rating (a value ***) Comparative Example 1 Example 1 Before use * after use** Before use * after use** 0 people 27 people 0 people 4 people 5.4 17.8 5.4 7.4

* Before use: Before UV irradiation

** After use: 48 hours after UV irradiation

*** a value: It indicates the erythema of the skin and this value represents the average (20 people)

As can be seen from the results of Table 10, the degree of erythema formation of the cosmetic formulation (Example 1) containing the Blue Lotus extract of the present invention is significantly higher than that of the formulation without the Blue Lotus extract (Comparative Example 1). It was confirmed that the decrease, which is a result of predicting that the Blue Lotus extract extract is very excellent in inhibiting the skin damage caused by ultraviolet rays.

Claims (6)

Cosmetic composition for skin protection containing blue lotus extract as an active ingredient. A cosmetic composition for inhibiting skin damage caused by ultraviolet rays, comprising the Blue Lotus extract as an active ingredient. The cosmetic composition according to claim 1 or 2, wherein the Blue Lotus extract inhibits skin cell damage caused by ultraviolet rays and protects the skin by inhibiting DNA damage of skin cells caused by ultraviolet rays. The cosmetic composition according to claim 1 or 2, wherein the content of the Blue Lotus extract is 0.0001-20.0 wt% based on the total composition. The composition of claim 1, wherein the composition is a solution, suspension, emulsion, paste, gel, cream, lotion, powder, soap, surfactant-containing cleansing, oil, powder foundation, emulsion foundation, wax Cosmetic composition, characterized in that it has a formulation selected from the group consisting of foundation and spray. A cosmetic method for blocking ultraviolet rays and preventing photoaging, comprising applying the cosmetic composition of claim 1 to the human skin.