JP7512181B2 - Odor gas reducer - Google Patents

Description

The present invention relates to a deodorant agent. More specifically, the present invention relates to a deodorant agent that, unlike general deodorants, has the effect of removing odorous components emitted by animals such as humans.

In recent years, with the rise in awareness of etiquette, an increasing number of people are concerned about sweat and body odor. Sweat is secreted from almost every part of the body, but sweat secreted from the armpits and feet is particularly prone to bacterial growth and is prone to smelling. For this reason, an increasing number of people are concerned about their own and others' body odors, such as armpit odor.

The main methods reported so far for preventing body odor include technologies that suppress microorganisms on the body surface (germicides, antibacterial agents, etc.), technologies that suppress sweat secretion through astringent action (astringents such as metal oxides, etc.), technologies that eliminate unpleasant body odor that has occurred, and technologies that mask it using fragrances (for example, Patent Document 1).

However, from a biological perspective, it is impossible to completely stop sweating. Also, there are odors that cannot be completely hidden by masking and the effect does not last. Furthermore, technology to suppress microorganisms on the body surface may also kill bacteria that normally reside on the skin other than the bacteria that cause body odor, which may weaken the skin's primary barrier function.

Here, we will explain about Quercus robur L., a member of the Fagaceae family and the Quercus genus, which is relevant to the present invention. Quercus robur L., a member of the Fagaceae family and the Quercus genus, is a deciduous tree that grows to a height of about 25 to 35 meters and is native to parts of Europe, Asia Minor, the Caucasus, and North Africa. Its scientific name means "hard barrel" in Latin, and it has been used since ancient times as a raw material for barrels for producing and storing whiskey and other drinks.

In recent years, various studies have been conducted on the effects of Quercus robur, a member of the Fagaceae family. For example, Patent Document 2 proposes an anti-aging agent containing a solvent extract of Quercus robur as an active ingredient. Furthermore, Patent Document 3 proposes a skin whitening agent containing an extract solvent of Quercus robur as an active ingredient.

JP 2007-63192 A JP 2006-249018 A JP 2011-236238 A

As mentioned above, various technologies to prevent body odor and other issues are being developed, but the effects are still not satisfactory, and further development is desired.

Therefore, the main objective of the present invention is to provide a novel deodorant agent that can suppress odors emitted by animals, including humans.

As a result of extensive research into deodorant agents, the inventors focused on a solvent extract of Quercus robur, a naturally occurring component of the Fagaceae family, and discovered that said solvent extract acts directly on odorous components emitted by animals, including humans, thus completing the present invention.

That is, the present invention first provides a deodorant agent containing a solvent extract of Quercus robur of the Fagaceae family as an active ingredient.
Regarding the solvent extract of Quercus robur of the Fagaceae family that can be used as an active ingredient in the deodorant agent of the present invention, the specific extraction solvent used is not particularly limited, but an aqueous ethanol solution can be used as the extraction solvent.
When an aqueous ethanol solution is used as the extraction solvent, the concentration is not particularly limited, but an aqueous ethanol solution having a concentration of 20% by mass or more and 80% by mass or less can be used.
The deodorant agent according to the present invention exerts a deodorant effect by reducing the amount of odorous components emitted from animals such as humans. The odorous components include one or more odorous components selected from the group consisting of ammonia, trimethylamine, isovaleric acid, hydrogen sulfide, methyl mercaptan, and pharma- ceutically acceptable salts thereof, and by reducing the amount of these odorous components, the deodorant agent can exert a deodorant effect.

The deodorant agent of the present invention acts directly on the odorous components emitted by animals, including humans, and can reduce the amount of these odorous components, thereby exerting a very high deodorant effect.

1 is a graph showing the ammonia deodorizing effect in Experimental Example 1. 1 is a graph showing the trimethylamine deodorizing effect in Experimental Example 1.

The following describes a preferred embodiment of the present invention. Note that the embodiment described below is an example of a typical embodiment of the present invention, and the scope of the present invention should not be interpreted narrowly based on this.

The deodorant agent according to the present invention contains a solvent extract of Quercus robur of the Fagaceae family as an active ingredient. The solvent extract of Quercus robur of the Fagaceae family is an extract obtained by extracting the trunk, leaves, branches, bark, flowers, fruit, etc. of Quercus robur of the Fagaceae family with an appropriate solvent, and is usually used as a concentrated solution of the extracted solvent. The concentrated solution can also be freeze-dried and used in the deodorant agent according to the present invention.

The specific part of Quercus robur of the Fagaceae family that may be extracted is not particularly limited as long as it does not impair the object of the present invention, but it is preferable to select the heartwood obtained by removing the bark from the trunk and main branches.
The extraction part may be used immediately after collection or after drying. If necessary, it may be used for extraction after being processed by crushing, cutting, shredding, molding, etc. Furthermore, processed products such as chips, wood flour, and barrels obtained from Quercus robur wood of the Fagaceae family can also be used for extraction. When a barrel is used, it is preferable to heat the barrel by burning the inside surface before using it for solvent extraction.

The solvent used for extraction is not particularly limited, and one or more solvents that can be used for plant extraction can be freely selected and used. For example, water, alcohols, glycols, ketones, esters, ethers, halogenated carbons, etc. can be mentioned. Examples of alcohols include ethanol, methanol, and propanol. Examples of glycols include ethylene glycol, diethylene glycol, butylene glycol, and propylene glycol. Examples of ketones include acetone and methyl ethyl ketone. Examples of esters include ethyl acetate, propyl acetate, and ethyl formate. These solvents may be used alone or as an aqueous solution, or may be used as a mixed solvent of any two or more kinds. In the present invention, it is particularly preferable to use ethanol. This is because it has low cytotoxicity and is therefore highly safe, and the obtained extract can be freeze-dried and used.

In the present invention, when ethanol is used as an extraction solvent, its concentration is not particularly limited, but since dissolved fat-soluble components precipitate and affect the stability of the formulation, it is preferably 80% by mass or less, and particularly preferably 60% by mass or less. In addition, from the viewpoint of the extraction efficiency of the deodorant components, it is preferably 20% by mass or more, and particularly preferably 40% by mass or more.

The extraction method is not particularly limited, and any extraction method usually used for plant extraction can be freely selected and used. For example, a method of immersing any part of Quercus robur of the Fagaceae family in the solvent for 24 hours and then filtering, or a method of extracting while heating and stirring at a temperature below the boiling point of the solvent and then filtering, etc. can be used.

The solvent extract of Quercus robur of the Fagaceae family can be used as it is as the active ingredient of the deodorant agent of the present invention, but it is also possible to further fractionate the solvent extract into highly active fractions by suitable separation means (e.g., partition extraction, gel filtration, silica gel chromatography, reversed-phase or normal-phase high-performance liquid chromatography, etc.) and use them.

The dry solids concentration of the solvent extract of Quercus robur of the Fagaceae family used in the deodorant agent of the present invention can be freely set according to the type of extraction solvent used, extraction method, etc., as long as it does not impair the effects of the present invention. In the present invention, the dry solids concentration is preferably 0.0000001% by mass to 0.5% by mass, more preferably 0.000001% by mass to 0.1% by mass. It is particularly preferably 0.00001% by mass to 0.05% by mass. By setting it to 0.00001% by mass or more, a higher deodorant effect can be achieved, and by setting it to 0.05% by mass or less, the generation of odor derived from the plant and the generation of precipitation can be prevented.

The deodorant agent according to the present invention can be used in various preparations such as cosmetics, topical medicines, or quasi-drugs.

Examples of cosmetics that can be used include skin care cosmetics such as lotion, milky lotion, cream, eye cream, beauty serum, massage lotion, pack, hand cream, body cream, body lotion, sunscreen cosmetics, body soap, and facial cleanser; hair cosmetics such as shampoo, hair treatment, hair styling agent, hair tonic, and hair growth agent; and makeup cosmetics such as powder foundation, liquid foundation, makeup base cosmetics, face powder, concealer, and eye shadow.

In addition, when applied to cosmetics, the supply method is not particularly limited; for example, in addition to the containers used for general cosmetic products, it is also possible to supply the cosmetic product using a spray container or an aerosol container.

As topical medicines, for example, they can be applied as lotions, ointments, liniments, sprays, aerosols, etc.

In addition to the active ingredient, a solvent extract of Quercus robur of the Fagaceae family, the deodorant agent of the present invention can contain one or more freely selected ingredients that can be used in regular pharmaceuticals and cosmetics.

Other ingredients that can be used in cosmetics, medicines, and quasi-drugs include, for example, bases, preservatives, emulsifiers, colorants, preservatives, surfactants, UV absorbers, antioxidants, moisturizers, UV absorbers, fragrances, preservatives and fungicides, body pigments, coloring pigments, alcohols, polyhydric alcohols, water, oils, thickeners, powders, chelating agents, enzymes, pH adjusters, and all other additives that can be commonly used in the fields of cosmetics, medicines, and quasi-drugs can be freely selected and included.

The solvent extract of Quercus robur of the Fagaceae family contained as an active ingredient in the deodorant agent of the present invention is a naturally derived ingredient, so there is little need to be careful when using it in combination with other active ingredients. Therefore, in addition to the solvent extract, other active ingredients can be freely blended into the deodorant agent of the present invention as needed. For example, any active ingredient can be blended, such as antioxidants, anti-inflammatory agents, cell activators, UV protection agents, moisturizers, blood circulation promoters, antibacterial agents, skin whitening agents, and active enzyme removers.

The deodorant effect of the above-mentioned cosmetics, topical medicines, or quasi-drugs can also be enhanced by appropriately blending fine particles of natural or synthetic porous metal oxides, astringent compounds containing metals such as aluminum, zirconium, and zinc, disinfectants, antibacterial agents, and antibiotics.

Preferred fine particle powders of natural or synthetic porous metal oxides include silica, zeolite, and those in which metals such as silver, copper, and zinc are supported in the voids of these.

Examples of antibacterial agents include benzoic acid, sodium benzoate, paraoxybenzoic acid esters, benzalkonium chloride, phenoxyethanol, and isopropylmethylphenol.

Furthermore, the deodorant agent of the present invention can reduce the amount of odorous components by applying it to areas where odorous components are likely to be generated, such as the feet, armpits, head, and pubic area, and as a result, can exert a high deodorant effect in each area. The amount of the preparation used in such cases varies depending on the content of the active ingredient, but for example, in the case of a liquid preparation, it is preferably 0.001 to 1000 mg per ¹ cm2 of skin surface, and in the case of a solid preparation, it is preferably 0.01 to 100 mg per ¹ cm2.

The deodorant agent according to the present invention described above exerts a deodorant effect by reducing the amount of odorous components emitted from animals such as humans. The odorous components that the deodorant agent according to the present invention reduces are not particularly limited as long as they are odorous components emitted from animals such as humans, but examples thereof include one or more odorous components selected from the group consisting of ammonia, trimethylamine, isovaleric acid, hydrogen sulfide, methyl mercaptan, and pharma- ceutical acceptable salts thereof.

The deodorant agent according to the present invention is a deodorant agent containing a solvent extract of Quercus robur, a naturally occurring component of the Fagaceae family, as an active ingredient, and is therefore highly safe and can be used continuously for a long period of time.

The present invention will be described in more detail below with reference to examples. Note that the examples described below are representative examples of the present invention, and should not be construed as narrowing the scope of the present invention.

<Experimental Example 1>
In Experimental Example 1, the deodorant effect of a solvent extract of Quercus robur (Quercus robur) of the Fagaceae family was examined.

(1) Preparation Example 1 of Solvent Extract
500 g of heartwood of Quercus robur (Fagaceae) was immersed in 2 L of 50% by mass ethanol aqueous solution. After 3 days, the extract obtained by filtration was evaporated to dryness, and the dried solid content was dissolved in 70% 1,3-butylene glycol aqueous solution to a concentration of 0.5% by mass to obtain a Quercus robur solvent extract.

(2) Measurement of deodorization rate 10 mL of the solvent extract of Quercus serrata obtained above was put into three 500 mL air collection bottles, and then 100 μL of 25% by mass aqueous ammonia solution (manufactured by Wako Pure Chemical Industries, Ltd.), 5 μL of isovaleric acid (manufactured by Tokyo Chemical Industry Co., Ltd.), or 50 μL of trimethylamine (manufactured by Wako Pure Chemical Industries, Ltd.) was added, and the bottles were quickly sealed with paraffin film. Next, each air collection bottle was shaken in a thermostatic chamber at 37° C. for 30 minutes, and the gas concentration in the head space at the top of the air collection bottle was measured using a gas detector tube [Gastec Corporation (ammonia; No. 3La, isovaleric acid; No. 81L, triethylamine; No. 180L)]. The same sample was tested three times to determine the average gas concentration. The concentration when a 69.95% 1,3-butylene glycol aqueous solution was used as a sample and similarly measured was taken as 100% gas residual rate, and the gas residual rate (%) of each sample solution was taken as the deodorizing rate. The results are shown in Table 1. The ammonia deodorizing effect is shown in Figure 1, and the trimethylamine deodorizing effect is shown in Figure 2. For reference, the experimental results of a green tea extract solution in which the green tea extract was dissolved in a 70% by mass 1,3-butylene glycol aqueous solution so that the dry solids concentration was 0.5% by mass, the same as that of the Quercus robur solvent extract, are also shown in Figures 1 and 2.

(3) Observations As shown in Table 1, Figures 1 and 2, it was found that the solvent extract of Quercus serrata has a deodorizing effect against ammonia, isovaleric acid and trimethylamine. These odorous components are odorous components contained in body odor. Therefore, it was found that the solvent extract of Quercus serrata has a high deodorant effect.

In addition, when compared with green tea extract, which has been known to have a strong deodorizing effect, as shown in Figures 1 and 2, it was found that Quercus robur solvent extract has a stronger deodorizing effect against ammonia and trimethylamine. In other words, it was shown that Quercus robur solvent extract has a stronger deodorant effect against body odor components than green tea extract.

<Experimental Example 2>
In Experiment 2, the deodorant effect and its durability of a body lotion containing a solvent extract of Quercus serrata were examined. The stability was also examined.

(1) Preparation of Body Lotion Body lotions of Examples 1 to 5 were prepared using the Quercus robur solvent extract prepared in Experimental Example 1 and the components shown in Table 2 below. The specific preparation method is as follows.
As a comparative example, a body lotion was produced without using the Quercus serrata solvent extract.
A: Components 5 to 9 were mixed and dissolved.
B: Components 1 to 4 and 10 to 11 were mixed and dissolved.
C: A was added to B and mixed to obtain a body lotion.

(2) Evaluation of deodorant effect Ten men in their 20s to 40s were asked to use the body lotions of Examples 1 to 5 and Comparative Example 1 at a dose of 2 mg/ ^cm2 , and the deodorant effect was evaluated by a panel of three experts. The evaluation criteria were as follows:

[Evaluation criteria]
5 points: particularly excellent deodorant effect 4 points: excellent deodorant effect 3 points: some deodorant effect 2 points: slight deodorant effect 1 point: no deodorant effect The results are shown as average values based on the following criteria.
◎: Average score is 4 points or more ○: Average score is 3 points or more but less than 4 points △: Average score is 2 points or more but less than 3 points ×: Average score is less than 2 points

(3) Evaluation of Stability The body lotions of the Examples and Comparative Examples were stored in a thermostatic chamber at 50° C., and the state after one month was observed. The evaluation criteria are as follows.
[Evaluation criteria]
⊚: No change ◯: Slight change, but no problem in use
△: Changes were observed. ×: Precipitation, discoloration, etc. occurred and the product could not be used.

(4) Results The results are shown in Table 2 below. As shown in Table 2, the body lotions of Examples 1 to 5 exhibited higher deodorant effects than Comparative Example 1. Comparing only among the Examples, it was found that the greater the amount of Quercus robur solvent extract, the higher the deodorant effect, and the smaller the amount of Quercus robur solvent extract, the more the stability improved.

<Experimental Example 3>
In Experimental Example 3, various cosmetics containing a solvent extract of Quercus serrata were produced and their effects were examined.

[Example 6: Body Lotion]
(1) Component Mass%
1. Glycerin 5.0
2. 1,3-butylene glycol 5.0
3. Lactic acid 0.05
4. Sodium lactate 0.1
5. PPG-6 decyltetradeceth-20 0.1
6. Ethanol 30.0
7. Methylparaben 0.1
8. Fragrance 0.2
9. Conference 0.05
10. Quercus robur solvent extract of Preparation Example 1 0.5
11. Remaining purified water

(2) Production Method A: Components 5 to 9 were mixed and dissolved.
B: Components 1 to 4, 10, and 11 were mixed and dissolved.
C: A was added to B and mixed to obtain a body lotion.

(3) Verification of Effects The body lotion of Example 6 was a body lotion with an excellent deodorant effect of removing odorous components emitted from animals such as humans.

[Example 7: Antiperspirant spray]
(1) Component Mass%
1. Aluminum chlorohydrate 0.22
2. Zeolite 0.5
3. Isopropyl myristate 1.6
4. Glyceryl tri-2-ethylhexanoate 1.2
5. Silica anhydride 1.7
6. Ethyl alcohol (99%) 1.5
7. Polyoxyethylene alkyl ether phosphate 0.02
8. Isopropyl methylphenol 0.01
9. Fragrance 0.3
10. Menthol 0.005 11. L-menthyl glyceryl ether 0.005 12. Quercus robur solvent extract of preparation example 1 0.3
13. Remaining liquefied petroleum gas

(2) Manufacturing Method A. Components 1 and 4 were mixed, and then components 2, 3, and 5 to 12 were added and mixed to obtain a concentrate for an antiperspirant spray.
B. A was placed in an aerosol container, and component 13 was added to A to obtain an antiperspirant spray.

(3) Verification of Effect Example 7 was an antiperspirant spray with excellent deodorant effect of removing odorous components emitted from animals such as humans.

[Example 8: Shampoo]
(1) Component Mass%
1. Sodium polyoxyethylene lauryl ether sulfate 10.0
(2E.O.; 30% aqueous solution)
2. Sodium tetradecene sulfonate (30% aqueous solution) 16.0
3. Coconut oil fatty acid amidopropyl betaine solution (30% aqueous solution) 10.0
4. Lauryl dimethylaminoacetate betaine (30% aqueous solution) 3.0
5. Sodium coconut oil fatty acid methyl taurate (30% aqueous solution) 1.0
6. Coconut oil fatty acid diethanolamide 5.0
7. Sodium distearate 2.0
8. Citric acid 0.7
9. Sodium chloride 0.5
10. Sodium benzoate 0.5
11. Quercus robur solvent extract of Preparation Example 1 7.0
12. Purified water remaining 13. Fragrance 0.2

(2) Manufacturing Method A: Components 1 to 12 were mixed uniformly at 80°C.
B: After cooling A, component 13 was added and mixed uniformly to obtain a shampoo.

(3) Verification of Effect Example 8 was a shampoo with excellent deodorant effect that removes odor components emitted from animals such as humans.

[Example 9: Body soap]
(1) Component Mass%
1. N-lauroyl glutamic acid triethanolamine 20.0
2. N-coconut oil fatty acid-N-carboxymethoxyethyl-N-carboxymethylethylenediamine disodium 10.0
3. Polyglyceryl monooleate 5.0
4. Sodium polyoxyethylene lauryl ether sulfate 5.0
5. Sodium chloride 1.0
6. Propylene glycol 2.0
7. Fragrance 0.2
8. Purified water remaining 9. Citric acid 0.1
10. Sodium citrate 0.1
11. Quercus robur solvent extract of Preparation Example 1 5.0
12. Ethanol 5.0

(2) Production Method A: Components 1 to 7 and 9 to 11 were heated and mixed and kept at 70°C.
B: A was cooled to 50°C, ingredients 8 and 12 were added, and the mixture was further cooled to 40°C to obtain a body soap.
(3) Verification of Effects The body soap of Example 9 was a body soap with excellent deodorant effects that removed odorous components emanating from animals such as humans.

[Example 10: Oil-in-water body cream]
(1) Component Mass%
1. Squalane 5.0
2. Di(phytosteryl/octyldodecyl) lauroyl glutamate 3.0
3. Dipentaerythritol fatty acid ester 0.8
4. Cetyl ethylhexanoate 4.0
5. Decamethylcyclopentasiloxane 5.0
6. Polyoxyethylene (60) hydrogenated castor oil 2.0
7. Polyoxyethylene (20) sorbitan monooleate 0.5
8. Sorbitan monooleate 1.5
9. Cetostearyl alcohol 0.5
10. Behenyl alcohol 0.5
11. 1,3-butylene glycol 7.0
12. Glycerin 5.0
13. Acrylates/alkyl methacrylate (C10-30) copolymer 0.2
14. Preservatives Appropriate amount 15. Triethanolamine 0.2
16. Disodium edetate 0.02
17. Purified water remaining 18. Fragrance 0.5
19. Dipropylene glycol 7.0
20. Quercus robur solvent extract of Preparation Example 1 0.01
21. Purified water 10.0

(2) Production Method A: Components 1 to 10 were dissolved by heating at 70°C.
B: Ingredients 11 to 17 were heated to 70°C, then added to A and emulsified.
C: B was cooled to room temperature.
D: Components 18 to 21 were added to C to obtain an oil-in-water emulsion.

(3) Verification of Effects The body cream of Example 10 was a body cream with excellent deodorant effects that removes odor components emitted from animals such as humans.

[Example 11: Facial cleanser]
(1) Component Mass%
1. Lauric acid 10.0
2. Myristic acid 10.0
3. Palmitic acid 10.0
4. Purified water 50.0
5. Glycerin 10.0
6. Coconut oil fatty acid diethanolamide 3.0
7. Potassium hydroxide 7.0
8. Preservatives Appropriate amount 9. Sorbitol 1.0
10. Purified water Remaining amount 11. Quercus robur solvent extract of Preparation Example 1 0.5

(2) Production Method A: Components 1 to 10 were dissolved by heating.
B: A was cooled gradually with mixing and 11 was added.
C: B was filled into a container to obtain a facial cleanser.

(3) Verification of Effect The face wash of Example 11 was a face wash with excellent deodorant effect that removes odorous components emitted from animals such as humans.

[Example 12: Roll-on antiperspirant]
(1) Component Mass%
1. Burnt alum 10.0
2. Zeolite 5.0
3. Isopropyl methylphenol 5.3
4. Menthol 0.3
5. Hydrogenated castor oil 5.0
6. POP butyl ether-1 0.5
7. Sorbitan sesquiisostearate 0.5
8. Stearyl alcohol balance 9. Quercus robur solvent extract of Preparation Example 1 0.5

(2) Production Method A: Components 1 to 8 were dissolved by heating.
B: A was gradually cooled with mixing, and 9 was added.
C: B was filled into a container to obtain a roll-on antiperspirant.

(3) Verification of Effect The roll-on antiperspirant of Example 12 was an excellent roll-on antiperspirant with a deodorant effect of removing odorous components emitted from animals such as humans.

[Example 13: Powdered body powder]
(1) Component Mass%
1. Talc 30
2. Titanium oxide 1.0
3. Red No. 226 0.1
4. Yellow No. 4 0.2
5. Black iron oxide 0.05
6. Bengala 0.2
7. Silicone resin powder 7
8. Mica remaining 9. Porous silica *1 5
10. Fragrance 1
11. L-menthol 0.3
12. Conference 0.02
13. Menthyl lactate 0.2
14. Oak solvent extraction of Preparation Example 1 0.2
*1: Sylosphere C-1504 (Fuji Silysia Pharmaceuticals)

(2) Production Method A: Components 1 to 9 were mixed uniformly in a Henschel mixer.
B: Components 10 to 14 were added to A and mixed uniformly.
C: B was filled into a container to obtain a powdered body powder.

(3) Verification of Effect The powdered body powder of Example 13 was a powdered body powder with excellent deodorant effect of removing odorous components emitted from animals such as humans.

[Example 14: Hair treatment lotion (hair mist)]
(1) Component Mass%
1. Polyoxyethylene (20) hydrogenated castor oil 0.4
2. Glyceryl monostearate 0.1
3. Cetostearyl alcohol 0.05
4. Dicocoyl dimethyl ammonium chloride 0.1
5. Shea butter 0.01
6. Isopropyl myristate 0.2
7. Ethanol 20
8. Carboxyvinyl polymer 0.01
9. Purified water remaining 10. Methylparaben 0.1
11. Sodium citrate 0.01
12. Sodium hyaluronate 0.05
13. Quercus robur solvent extract of Preparation Example 1 1.5
14. Fragrance 0.5

(2) Production Method A: Components 1 to 6 were dissolved uniformly at 70°C.
B: Components 7 to 12 were added to A and mixed uniformly.
C: B was gradually cooled with mixing, and 13 and 14 were added.
D: C was filled into an atomizer container to obtain a hair treatment lotion.

(3) Verification of Effects The hair treatment lotion of Example 14 was a hair treatment lotion with excellent deodorant effects that removes odorous components emitted from animals such as humans.

[Example 15: Hair treatment]
(1) Component Mass%
1. Cetostearyl alcohol 3.5
2. Behenyl alcohol 2.5
3. Polyoxyethylene (40) hydrogenated castor oil 0.5
4. Glyceryl monostearate 2.2
5. N-Lauroyl-L-glutamic acid di(phytosteryl, behenyl, 2-octyldodecyl) 1.0
6. Isopropyl myristate 3.0
7. Dimethicone 4.0
8. Polyoxypropylene (40) butyl ether 2.0
9. Quercus robur solvent extract of Preparation Example 1 0.5
10. Purified water remaining 11. Propylene glycol 10.0
12. 1,2-Pentanediol 0.1
13. Stearyltrimethylammonium chloride 1.5
14. Phenoxyethanol 0.1
15. Fragrance (appropriate amount)

(2) Production Method A: Components 1 to 8 were heated and dissolved uniformly.
B: Components 10 to 14 were heated and dissolved uniformly.
C: A was added to B, mixed uniformly and emulsified, and cooled.
Components 9 and 15 were added to and mixed with D.C, and the mixture was then filled into a container to obtain a hair treatment.

(3) Verification of Effects The hair treatment of Example 15 was a hair treatment with excellent deodorant effects that removes odorous components emitted from animals such as humans.

[Example 16: Scalp essence]
(1) Component Mass%
1. Isopropyl methylphenol 0.02
2. Pantothenyl alcohol 0.1
3. 1,3-butylene glycol 5.0
4. Polyoxyethylene hydrogenated castor oil isostearate 0.5
5. Ethanol 60.0
6. Methylparaben 0.1
7. Fragrance 0.2
8. Menthyl lactate 0.05
9. Quercus robur solvent extract of Preparation Example 1 3.5
10. Remaining purified water

(2) Production Method A: Components 5 to 8 were mixed and dissolved.
B: Components 1 to 4, 9, and 10 were mixed and dissolved.
C: A was added to B and mixed to obtain a scalp essence.

(3) Verification of Effects The scalp essence of Example 16 was a scalp essence with excellent deodorant effects that removes odorous components emitted from animals such as humans.

Claims (3)

It contains an aqueous ethanol extract of Quercus serrata from the Fagaceae family as an active ingredient.
An odor gas reducer for use as a cosmetic, a drug for external application, or a quasi-drug for external application, which reduces the amount of one or more odorous components selected from the group consisting of ammonia, trimethylamine, and isovaleric acid . The odor gas reducing agent according to claim 1 , wherein the extract of the aqueous ethanol solution is 20% by mass or more and 80% by mass or less of an extract of an aqueous ethanol solution. 3. The odor gas reducer according to claim 1, wherein the odor components are odor components emitted by humans .