TWI729694B - Sunscreen essential oil composition - Google Patents

Abstract

A sunscreen essential oil composition comprising wintergreen essential oil, birch essential oil, cinnamon essential oil, sweet anise essential oil and benzoin essential oil. The sunscreen essential oil composition of the present invention has the ability to absorb light with a wavelength range of 200-320 nm.

Description

Sunscreen essential oil composition

The present invention relates to an essential oil composition, in particular to a sunscreen essential oil composition.

Ultraviolet rays are divided into UVA, UVB and UVC. The wavelength range of UVA is 320~400nm, which can penetrate into the dermis of the skin, causing skin spots and promote skin aging; the wavelength range of UVB is 290~320nm, which can cause skin sunburn and cause skin damage. Skin keratin is thickened, dull, red or painful; UVC has a wavelength range of 200~290nm. The shorter the wavelength, the more dangerous it is, but it can be blocked by the ozone layer, and only a small amount will reach the surface of the earth. At present, the sunscreens on the market are directed towards blocking UVA and UVB as the research and development goal, and blocking UVB is the basic requirement of sunscreens.

Sunscreens (also known as UV blockers) can be roughly divided into UV absorption methods and UV scattering (reflection) methods based on the principle of sun protection. Use UV-scattering sunscreens such as physical sunscreens such as zinc oxide and titanium dioxide. Sunscreens that use ultraviolet absorbing methods, such as para aminobenzoic acid (para aminobenzoic acid, Chemical sunscreens such as PABA, octyl salicylate (OCS), octyl methoxycinnamate (OMC), benzophenone, methyl anthranilate, etc. . Although physical or chemical sunscreens can achieve the function of blocking UVA and UVB, physical sunscreens can easily cause skin blockage; chemical sunscreens may penetrate into the skin and enter the blood to be absorbed by the body. After long-term use There may be concerns about human injury or environmental pollution. It can be seen that, whether it is a physical sunscreen or a chemical sunscreen, it may cause harm to the human body or the environment under long-term use; therefore, if you can seek natural sources of materials as sunscreens, the above problems should be avoided.

Chinese Patent Publication CN 104116698A proposes a sunscreen essential oil, which is composed of the following raw materials: 10-20 parts of honey, 10-20 parts of peppermint essential oil, 10-20 parts of lavender essential oil, 5-10 parts of chamomile essential oil, 5-10 parts of radish Huoxiang essential oil, 5-10 parts of permanent flower essential oil and 30-50 parts of deionized water. This patent publication does not provide experimental tests and cannot confirm its sun protection effect. In addition, there are also most essential oils on the market that claim to have sun protection, but there is also no specific experimental proof that it is impossible to verify that they have sun protection. In addition, there are thousands of types of essential oils, and although these plant essential oils have established a database of ingredient composition, usage and indications, the current research on the sun protection function of compound essential oils is still a small number.

In addition to sun protection, the smell of compound essential oils will also affect subsequent use. If you can find a compound with good smell and sun protection function (mainly blocking UVB) Essential oils should be able to avoid harm to the human body or the environment, and help the development of sunscreen products.

Therefore, the purpose of the present invention is to provide a sunscreen essential oil composition.

Therefore, the sunscreen essential oil composition of the present invention includes wintergreen essential oil, birch essential oil, cinnamon bark essential oil, sweet fennel essential oil, and benzoin essential oil.

The effect of the present invention is that the sunscreen essential oil composition of the present invention can effectively absorb light with a wavelength range of 200-320nm because it contains a combination of specific plant essential oils, and can achieve the purpose of sunscreen without adding physical or chemical sunscreen agents.

The content of the present invention is described in detail below: In the sunscreen essential oil composition of the present invention, the holly essential oil is obtained by distillation and extraction from the leaves of the holly tree (scientific name Gaultheria Procumbens). White birch essential oil is distilled and extracted from the leaves or trees of white birch (scientific name Betula alba). Cinnamon bark essential oil is obtained by distillation and extraction from the bark of cinnamon tree (scientific name Cinnamomun zeylanicum). Sweet fennel essential oil is distilled and extracted from the seeds of the fennel tree (scientific name Foeniculum vulgare). Benzoin essential oil is obtained by solvent extraction from the resin of the benzoin tree (scientific name Styrax Benzoe).

The content of each component of the sunscreen essential oil composition of the present invention can be adjusted according to actual use. Preferably, the total volume of the sunscreen essential oil composition is 100 vol%, and the content of the wintergreen essential oil is in the range of 20-50 vol%. The content of essential oil is in the range of 20~45vol%, and the content of cinnamon bark essential oil is in the range of 10~25vol%. The content of sweet fennel essential oil ranges from 2 to 20 vol%, and the content of benzoin essential oil ranges from 2 to 20 vol%.

Preferably, the sunscreen essential oil composition has the ability to absorb light with a wavelength range of 200-320nm; more preferably, the sunscreen essential oil composition has the ability to absorb light with a wavelength range of 200-300nm.

The sunscreen essential oil composition of the present invention can be applied to any product requiring sunscreen function, such as but not limited to various types of cosmetics (such as the first to the categories listed in the category and scope of cosmetics announced by the Ministry of Health and Welfare on July 4, 2019). Class 12), sunscreen medical reagents, etc.; and can be made into commodities in various dosage forms according to subsequent application requirements.

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figures 1-9 are ultraviolet absorption spectra, illustrating the test results of Examples 1-9 of the sunscreen essential oil composition of the present invention Figures 10 and 11 are ultraviolet absorption spectrograms, illustrating the test results of the sunscreens of Comparative Examples 1 to 2; Figures 12 to 16 are ultraviolet absorption spectrograms, illustrating the test results of the sunscreens of Comparative Examples 3-7; Figures 17 to 23 are ultraviolet absorption spectrograms illustrating the test results of the sunscreens of Comparative Examples 8 to 14.

The present invention will be further described in the following embodiments, but it should be understood that the embodiments are only for illustrative purposes and should not be interpreted as limitations to the implementation of the present invention.

<Examples 1~3> Sunscreen essential oil composition (the volume ratio of each essential oil component is 20vol%)

Example 1: Take 1 mL of wintergreen essential oil (concentration 100ppm, purchased from British FPI), 1 mL of birch essential oil (concentration 100ppm, purchased from British FPI), and 1 mL of cinnamon bark essential oil (concentration of 100 ppm, purchased from FPI) From Sydney, Australia), 1 mL of sweet fennel essential oil (concentration of 100 ppm, purchased from Sydney, Australia) and 1 mL of benzoin essential oil (concentration of 100 ppm, purchased from Sydney, Australia) were mixed to obtain the sunscreen essential oil composition of Example 1 (The concentration is 100ppm, and the volume ratio of each essential oil component is 20vol%).

Example 2: Take 1.8 mL of the sunscreen essential oil composition of Example 1 and mix 1.2 mL of ethanol to prepare the sunscreen essential oil composition of Example 2 (concentration is 60ppm, and the volume ratio of each essential oil component is 20vol%) .

Example 3: Take 1 mL of wintergreen essential oil (concentration 20ppm, purchased from British FPI company), 1mL of birch essential oil (concentration 20ppm, purchased from British FPI company), and 1 mL of cinnamon bark essential oil (concentration 20ppm, purchased from British FPI). From Sydney, Australia), 1 mL of sweet fennel essential oil (concentration of 20 ppm, purchased from Sydney, Australia) and 1 mL of benzoin essential oil (concentration of 20 ppm, purchased from Sydney, Australia) were mixed to obtain the sunscreen essential oil composition of Example 4 (Concentration is 20ppm, the volume ratio of each essential oil component is 20vol%).

<Examples 4-9> Sunscreen essential oil composition (adjust the volume ratio of each essential oil component)

The common preparation method of Examples 4-9: In addition to mixing 5 essential oil components (with a concentration of 100 ppm) according to the volume ratio in the following table, an essential oil mixture is obtained. Afterwards, 1.2 mL of the essential oil mixture was mixed with 1.8 mL of ethanol to prepare a sunscreen essential oil composition (concentration of 40 ppm).

<Comparative Examples 1~7>

Comparative examples 1 and 2 are octyl methoxycinnamate (commercially available sunscreen) with a concentration of 4ppm and 20ppm, respectively. Comparative examples 3-7 are wintergreen essential oil, birch essential oil, cinnamon essential oil, sweet fennel essential oil, and benzoin essential oil. A single essential oil (both at a concentration of 20ppm).

[test]

The UV-visible light spectrometer was used to analyze the light absorbance of the sunscreen essential oil compositions of Examples 1-9, the sunscreens of Comparative Examples 1 and 2, and the single essential oils of Comparative Examples 3-7 (the detection wavelength range is 200-400nm). ), the results are shown in Figures 1~9, 10 and 11, and 12~16 respectively, and some absorption peaks and peak values have been extracted and sorted in Table 1~2 below.

[result]

1. Comparing Example 1 with Comparative Examples 2-7, it can be found that the single wavelength absorption peaks of Comparative Examples 2-7 at 302nm, 231nm, 231nm, 280nm, 254nm, and 269nm respectively have extremely obvious absorption and the peak performance is all lower. 2. It shows that Comparative Examples 2-7 can only absorb ultraviolet light of a single wavelength, and cannot block ultraviolet light of other wavelengths. Although the component combination of Example 1 is the component combination of Comparative Examples 3-7, it does not only have absorption peaks at the above 5 wavelengths, but exhibits peaks higher than 3 in the wavelength range of 200~300nm. There is absorption in the wavelength range of ~320nm. In addition to the wavelength range that can absorb light is much wider than the above 5 wavelengths, the peak value is also significantly improved. It shows that the results of Example 1 cannot be achieved by simply superimposing the effects of Comparative Examples 3-7. This proves that the absorption intensity of Example 1 is much higher than that of Comparative Examples 3 to 7, and it also proves that the sunscreen essential oil composition of the present invention can effectively absorb ultraviolet light in the wavelength range of 200 to 320 nm.

2. Comparing Examples 1 to 3, it can be found that the absorption peak positions of the essential oil compositions of different concentrations and the same composition ratio are similar, but the peak value increases with the higher the concentration.

3. Comparing Examples 4-9, it can be found that the absorption peak positions of the essential oil compositions of the same concentration and different component ratios are similar; similarly, as in Examples 1-3, all have absorption in the wavelength range of 200-320nm.

In addition, in order to understand whether the plant essential oil mentioned in CN 104116698A has sunscreen function, the preparation and testing of the following comparative examples 8-14 were carried out:

<Comparative Examples 8-14> Compound essential oil

The compound essential oils of Comparative Examples 8 to 14 were prepared according to the composition of the following table (the selected essential oils are all pure essential oils), and the following common preparation method: Common preparation method: select 5 kinds of essential oils (the concentration is 20ppm), each Take 1 mL of these essential oils and mix them to prepare a compound essential oil (concentration of 100 ppm).

The UV-visible light spectrometer was also used to analyze the light absorbance of the compound essential oils of Comparative Examples 8-14 (the detection wavelength range is 200-400nm), and the results are shown in Figures 17-23, respectively. From Figures 17 to 23, it can be found that the compound essential oils of Comparative Examples 8 to 14 have no absorption peak with a peak value higher than 1.5 in the wavelength range of 200 to 320 nm. It can be seen that the plants mentioned in the literature or other patent publications Essential oils (such as peppermint, lavender, chamomile, patchouli, permanent flower, rosemary) do not have a better sun protection function, and it also shows that plant essential oils can not be combined at random to have sun protection function.

In summary, because the sunscreen essential oil composition of the present invention contains a combination of specific plant essential oils, it can effectively absorb light in the wavelength range of 200~320nm, and can have sunscreen function without adding physical or chemical sunscreen agents, so it can indeed To achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

Claims (5)

A sunscreen essential oil composition comprising: wintergreen essential oil, birch essential oil, cinnamon essential oil, sweet fennel essential oil and benzoin essential oil. The sunscreen essential oil composition according to claim 1, wherein the total volume of the essential oil composition is 100 vol%, the content of the holly essential oil is in the range of 20-50 vol%, and the content of the birch essential oil is in the range of 20 to 45 vol. %, the content of the cinnamon bark essential oil is in the range of 10-25 vol%, the content of the sweet anise essential oil is in the range of 2-20 vol%, and the content of the benzoin essential oil is in the range of 2-20 vol%. The sunscreen essential oil composition as described in claim 1 has the ability to absorb light in the wavelength range of 200 to 320 nm. The sunscreen essential oil composition as described in claim 1 has the ability to absorb light in the wavelength range of 200 to 300 nm. The sunscreen essential oil composition as described in claim 1 is used for making cosmetics.

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