JP7471048B2 - Composition for reducing malodorous compounds - Patents.com - Google Patents

Description

The present invention relates to a composition for reducing malodorous compounds having an indole skeleton.

In general, odors are present everywhere in the environment. Some odors are perceived as pleasant, but there are also malodors that cause unpleasant sensations, and many methods for controlling malodors are continually being investigated.

For example, one source of malodours is discarded human and animal bodily wastes, liquids and secretions of all kinds. Other sources of unpleasant odours that need to be controlled are those caused by food, for example dairy products, meat and fish, or textiles, furniture and wall materials.

With regard to human and animal bodily excretions, fluids and secretions, indole compounds are known as odorants, and to meet the ongoing need to control odor, personal hygiene products exist, such as sanitary napkins, panty liners, adult incontinence products, baby diapers, paper towels, toilet paper and facial tissue. Such articles are often used to absorb and dispose of bodily fluids and other exudates excreted by the human body, thereby reducing the unpleasantness of odors.

Patent document 1 describes a method for controlling odorous substances produced by urination by contacting surface-reacted calcium carbonate with odorous substances.

Patent Document 2 describes a fragrance composition that uses an aromatic substance selected from aldehydes, α,β-unsaturated aldehydes, alcohols, and ketones to prevent the generation of malodorous substances caused by indole and indole-related substances, which are sources of malodor derived from fecal and urinary stains, and a method for using the composition.

Patent document 3 describes a method for suppressing the production of volatile components caused by the action of enzyme activity on urine by applying a β-glucuronidase inhibitor that contains a macrocyclic ketone as an active ingredient.

Patent Document 4 describes an oral composition that is intended to effectively cleanse the oral cavity of odorous components such as indole, skatole, phenol, and p-cresol.

Patent document 5 describes an oral care composition that uses serine to reduce bad breath caused by hydrogen sulfide and indole.

JP2017-528172A (Published on September 28, 2017) JP 2008-36434 (Published on February 21, 2008) JP 2014-195696 (Published on October 16, 2014) JP 2004-203872 (Published on July 22, 2004) Special Publication No. 2013-508453 (Published on March 7, 2013)

However, when deodorizing with a certain deodorizing ingredient, there is a risk that the odor of the ingredient may be too strong for the user, resulting in a decrease in preference.

The present invention was made in consideration of these circumstances, and aims to provide a composition for reducing bad odors that suppresses the decline in preference caused by the user feeling that the odor of a single deodorant ingredient is too strong.

In order to solve the above problems, a composition according to one aspect of the present invention is a composition for reducing malodorous compounds having an indole skeleton, and contains an aldehyde compound and an organic acid, and the aldehyde compound is benzaldehyde and another aldehyde compound different from the benzaldehyde.

According to one aspect of the present invention, it is possible to provide a composition for reducing bad odors that suppresses the decrease in preference caused by the odor of one deodorizing component being strongly felt by the user.

<Composition for reducing malodorous compounds having an indole skeleton>
The composition for reducing malodorous compounds having an indole skeleton according to one embodiment of the present invention (hereinafter, the composition for reducing malodorous compounds having an indole skeleton is simply referred to as the "composition") contains an aldehyde compound and an organic acid, and the aldehyde compound is benzaldehyde and another aldehyde compound different from the benzaldehyde. It is possible to prevent the odor of benzaldehyde from being prominent due to the odor of the other aldehyde compound. Therefore, it is possible to prevent a decrease in preference caused by the user strongly feeling only one deodorizing component. In this specification, the malodorous compound refers to a compound that causes a malodorous odor, and specifically, a compound having an indole skeleton as described below.

[Aldehyde Compounds]
The benzaldehyde contained in the composition of one embodiment of the present invention reacts with malodorous compounds to convert the malodorous compounds into other compounds. By including benzaldehyde, the amount of malodorous compounds having an indole skeleton can be reduced, and malodor can be eliminated.

The other aldehyde compound contained in the composition of one embodiment of the present invention may be an aldehyde compound other than benzaldehyde. For example, aldehyde compounds having a different odor from benzaldehyde are preferred, and aromatic aldehyde compounds are preferred, more preferably hexylcinnamic aldehyde, phenylacetaldehyde, phenylpropylaldehyde, cinnamic aldehyde, α-amylcinnamic aldehyde, hydratropic aldehyde, anisaldehyde, p-methylphenylacetaldehyde, cuminaldehyde, cyclamen aldehyde, 3-(p-t-butylphenyl)-propylaldehyde, p-ethyl-2,2-dimethylhydrocinnamaldehyde, 2-methyl-3-(p-methoxyphenyl)-propylaldehyde, p-t-butyl-α-methylhydrocinnamic aldehyde, salicylaldehyde, heliotropin, helional, vanillin, ethyl vanillin, methyl vanillin, etc., and more preferably hexylcinnamic aldehyde. These may be used alone or in combination. By including such aldehyde compounds, the odor of benzaldehyde can be reduced.

When benzaldehyde is used alone, the scent of the benzaldehyde stands out, and some users may be dissatisfied with the scent and seek a better scent, but by combining benzaldehyde with other aldehyde compounds, each softens the scent of the other, improving palatability. When benzaldehyde and other aldehyde compounds are combined, the molar ratio of benzaldehyde:other aldehyde compounds may be appropriately set according to the desired palatability, but it is preferable to use a ratio in the range of 1:1/3 to 100. By using benzaldehyde and other aldehyde compounds in a molar ratio within this range, it is possible to provide a composition for reducing malodorous compounds that not only reduces malodorous compounds but also improves palatability.

In another aspect of the present invention, the aldehyde compound may include, in addition to benzaldehyde and other aldehyde compounds, another aldehyde compound. The other aldehyde compound may be included to enhance palatability.

In one embodiment of the present invention, the amount of the aldehyde compound contained in the composition is not particularly limited, but is preferably 0.0001% by weight to 90% by weight, and more preferably 0.001% by weight to 80% by weight, of the total composition.

[Organic acids]
The organic acid contained in the composition according to one embodiment of the present invention may be any organic acid that increases the efficiency with which the aldehyde compound reacts with a malodorous compound to convert the malodorous compound into another compound.

Examples of organic acids include carboxylic acids and sulfonic acids, with carboxylic acids being preferred. Carboxylic acids are compounds that have one or more carboxyl groups in the molecule. Examples of carboxylic acids include saturated fatty carboxylic acids, unsaturated fatty carboxylic acids, hydroxycarboxylic acids, and aromatic carboxylic acids. Hydroxycarboxylic acids that have a hydroxyl group in the molecule are particularly preferred.

Among hydroxycarboxylic acids, for example, saturated fatty hydroxycarboxylic acids having 2 to 4 carbon atoms, hydroxycarboxylic acids having multiple carboxyl groups, and aromatic hydroxycarboxylic acids are preferred. Examples of saturated fatty hydroxycarboxylic acids having 2 to 4 carbon atoms include lactic acid, examples of hydroxycarboxylic acids having multiple carboxyl groups include malic acid and citric acid, and examples of aromatic hydroxycarboxylic acids include salicylic acid.

By including an organic acid in addition to an aldehyde compound in the composition, the malodorous compounds can be reduced more effectively than a composition that includes only an aldehyde compound without an organic acid.

In one embodiment of the present invention, the amount of organic acid contained in the composition is not particularly limited, but is preferably 0.001% to 90% by weight, and more preferably 0.01% to 80% by weight, of the total composition.

In one embodiment of the present invention, the molar ratio of the aldehyde compound to the organic acid is not particularly limited, but is preferably 1:1/1000-100, and more preferably 1:1/500-50.

[Other materials]
The composition according to one aspect of the present invention may contain other materials in addition to the aldehyde compound and the organic acid. Examples of the other materials include a solvent, a deodorizing aid, a preservative, a surfactant, a discoloration inhibitor, an antioxidant, a coloring agent, a fragrance, a resin, and a plasticizer. The amount of the other components is preferably 1% by weight to 99.9% by weight when the other components are a solvent, 0.001% by weight to 80% by weight when the other components are a deodorizing aid, a surfactant, a fragrance, or a resin, and 0.00001% by weight to 1% by weight when the other components are a preservative, a discoloration inhibitor, an antioxidant, a coloring agent, or a plasticizer.

[Malicious compounds having an indole skeleton]
The compound having an indole skeleton refers to a compound having an indole skeleton as a basic skeleton, and various substituents may be introduced into the same molecule. Examples include indole, 1-methylindole, 2-methylindole, 5-methylindole, 7-methylindole, and skatole.

By treating malodorous compounds having an indole skeleton with a composition according to one aspect of the present invention, the malodor can be effectively reduced.

[Form of composition]
The composition according to one aspect of the present invention may be in various forms, such as a liquid, a gel, a cream, or a granule.

[Method of producing the composition]
The method for producing the composition according to one embodiment of the present invention is not particularly limited. For example, the composition may be produced by mixing an aldehyde compound, an organic acid, and other materials. After mixing the aldehyde compound, the organic acid, and other materials, the composition may be in various forms. Examples of the form include liquid, gel, cream, and granule.

[Use of the composition]
The composition according to one aspect of the present invention can be used for various applications. For example, cosmetics, quasi-drugs, medicines, food, beverages, sanitary products, fragrance products, and deodorant products can be mentioned. That is, cosmetics, quasi-drugs, medicines, food, beverages, sanitary products, fragrance products, and deodorant products containing the composition are also within the scope of the present invention. In addition, various dosage forms and shapes can be selected according to the usage mode of each application.

In the case of cosmetics, for example, they can be used in basic cosmetics such as creams, milky lotions, lotions, essences, facial cleansers, cleansing agents, and packs; makeup cosmetics such as lipstick, foundation, and eye color; toiletry products such as body soap, soap, shampoo, rinse, conditioner, and hair treatment; hair cosmetics such as hair styling agents; deodorant products such as antiperspirant sprays and deodorant creams; and fragrance products such as hair colognes and solid perfumes.

The pharmaceutical formulation may be either an oral or parenteral formulation. Specific examples include aerosols, liquids, extracts, elixirs, capsules (hard capsules, soft capsules, microcapsules), granules, pills, eye ointments, transdermal preparations, suspensions, emulsions, suppositories (including vaginal suppositories), powders, spirits, tablets (plain tablets, coated tablets, special tablets), syrups, infusions/decoctions, injections (water-soluble injections, water-insoluble injections), patches, tinctures, eye drops, lozenges, ointments, poultices, aromatic perfumes, liniments, limeades, liquid extracts, lotions, etc. These formulations can be manufactured by conventional methods in the field of pharmaceutical technology, for example, by the methods described in the Japanese Pharmacopoeia.

Examples of the food form include gel, powder, liquid, granule, cream, paste, solid, etc. In addition, the type of food and drink composition of the present invention is not particularly limited, and examples include confectionery (chewing gum, candy, gummy, tablet, chocolate, jelly, etc.), frozen desserts (ice candy, ice cream, sorbet, etc.), frozen desserts (jelly, pudding, mizu-yokan, etc.), noodles and other starch-based foods, powdered food and drink, beverages (soup, coffee, tea, juice, carbonated drinks, cocoa, alcoholic beverages, jelly-like drinks, etc.), bakery foods (cookies, biscuits, bread, pies, cakes, etc.), oily foods (margarine, shortening, fat spreads, etc.), dairy products (milk, yogurt, whey drinks, lactic acid bacteria drinks, butter, cream, cheese, etc.), etc.

The type of hygiene product is not particularly limited, and examples include personal hygiene products such as sanitary napkins, panty liners, adult incontinence products, baby diapers, paper towels, toilet paper, and cosmetic paper.

The term "fragrant product" refers to a product that has deodorizing properties. Examples of the form of the fragrant product include gel, powder, liquid, granule, cream, paste, solid, etc. The type of the fragrant product of the present invention is not particularly limited, and examples include air fresheners for toilets, rooms, or automobile interiors, household detergents, laundry detergents, laundry finishing agents, dishwashing detergents, etc.

In addition, a deodorizing product refers to a product that has deodorizing properties. Examples of the form of a deodorizing product include gel, powder, liquid, granule, cream, paste, solid, etc. In addition, the type of deodorizing product of the present invention is not particularly limited, and examples include deodorizers for toilets, rooms, or automobile interiors, household detergents, laundry detergents, laundry finishing agents, dishwashing detergents, etc.

The composition according to one embodiment of the present invention can also be used as a deodorizing material for textile products. The composition can be applied to the fiber surface of the textile product by immersion processing, padding processing, coating processing, screen processing, etc. In this way, deodorizing products to which the composition according to the present invention is applied are also within the scope of the present invention.

Method for reducing malodorous compounds
A reduction method according to one embodiment of the present invention is a method of supplying at least one selected from the composition, a cosmetic containing the composition, a quasi-drug containing the composition, a pharmaceutical containing the composition, a food containing the composition, a beverage containing the composition, and a deodorizing product containing the composition to a location where a malodorous compound having an indole skeleton is present.

[Areas where malodorous compounds exist]
Examples of locations where malodorous compounds having an indole skeleton are present include the surface of human skin where sweat is produced, kitchen drains where food waste tends to accumulate, toilets where human excrement tends to adhere, livestock sheds where animal excrement tends to adhere, household excrement treatment equipment, and inside digestive organs such as the oral cavity and intestines.

[Method of Supplying Composition]
(Supply Method)
In the reduction method according to one aspect of the present invention, the supply method is not particularly limited, but examples thereof include a method of applying the composition to the target area, a method of dispersing the composition as a spray, a method of cleaning with a cosmetic such as a detergent, a method of applying the composition in the form of a microcapsule, etc. After the composition is supplied and the malodorous compound having an indole skeleton is converted into another compound and reduced, the composition may be removed, for example, by washing with water.

(Amount of composition supplied)
In one aspect of the present invention, the amount of the composition to be supplied may be appropriately set according to the desired deodorizing effect, etc. That is, the amount of the composition to be supplied may be an amount containing an aldehyde compound in an amount capable of converting and reducing a malodorous compound having an indole skeleton into another compound, and an organic acid in an amount capable of increasing the efficiency of converting the malodorous compound into another compound by reacting with the aldehyde compound. The amount of the aldehyde compound to be supplied is, for example, preferably 0.01 mol to 1000 mol relative to 1 mol of a malodorous compound having an indole skeleton, and more preferably 0.1 mol to 100 mol. The amount of the organic acid to be supplied is, for example, preferably 0.01 mol to 100 mol relative to 1 mol of a malodorous compound having an indole skeleton, and more preferably 0.1 mol to 10 mol. In addition, in order to allow the user to easily specify the amount to be used, the person providing the composition to the user may set a guideline amount for each corresponding location. The person providing the composition may, for example, set how many mL should be supplied to the scalp based on the total amount of the composition including other components to be supplied together, or set the amount to be used per unit area of the area to be supplied, and inform the user of the amount to be used.

By supplying the malodorous compounds having an indole skeleton to a location where the malodorous compounds are present in the above-mentioned molar ratio to the organic acid and aldehyde compound, the malodorous compounds can be effectively reduced.

〔summary〕
The present invention includes, but is not limited to, the following inventions.
(1) A composition for reducing a malodorous compound having an indole skeleton, comprising an aldehyde compound and an organic acid, the aldehyde compound being benzaldehyde and another aldehyde compound different from the benzaldehyde.
(2) The composition for reducing a malodorous compound having an indole skeleton according to (1), wherein the other aldehyde compound is an aromatic aldehyde compound.
(3) The composition for reducing a malodorous compound having an indole skeleton according to (2), wherein the other aldehyde compound is at least one selected from hexylcinnamic aldehyde, phenylacetaldehyde, phenylpropylaldehyde, cinnamic aldehyde, α-amylcinnamic aldehyde, hydratropic aldehyde, anisaldehyde, p-methylphenylacetaldehyde, cuminaldehyde, cyclamen aldehyde, 3-(p-t-butylphenyl)-propylaldehyde, p-ethyl-2,2-dimethylhydrocinnamaldehyde, 2-methyl-3-(p-methoxyphenyl)-propylaldehyde, p-t-butyl-α-methylhydrocinnamic aldehyde, salicylaldehyde, heliotropin, helional, vanillin, ethyl vanillin, and methyl vanillin.
(4) A composition for reducing a malodorous compound having an indole skeleton according to any one of (1) to (3), wherein the molar ratio of the benzaldehyde to the other aldehyde compound is in the range of 1:1/3 to 100.
(5) The composition for reducing a malodorous compound having an indole skeleton according to any one of (1) to (4), wherein the organic acid is a hydroxycarboxylic acid.
(6) The composition for reducing a malodorous compound having an indole skeleton according to (5), wherein the hydroxycarboxylic acid is at least one selected from the group consisting of lactic acid, malic acid, citric acid and salicylic acid.
(7) The composition for reducing a malodorous compound having an indole skeleton according to any one of (1) to (6), wherein the malodorous compound is at least one selected from indole, 1-methylindole, 2-methylindole, 5-methylindole, 7-methylindole, and skatole.
(8) A cosmetic, a quasi-drug, a medicine, a food, a beverage, a hygiene product, an aromatic product, or a deodorizing product, comprising the composition for reducing a malodorous compound having an indole skeleton according to any one of (1) to (7).
(9) A method for reducing a malodorous compound having an indole skeleton, comprising supplying at least one selected from a composition for reducing a malodorous compound having an indole skeleton described in any one of (1) to (7) to a location where the malodorous compound is present, or a cosmetic, quasi-drug, pharmaceutical, food, beverage, sanitary product, fragrance product, and deodorant product described in (8).

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. The technical scope of the present invention also includes embodiments obtained by appropriately combining the technical means disclosed in different embodiments.

[Example: Test for reducing indole-like odor and benzaldehyde odor]
In order to investigate what molar ratio of benzaldehyde and hexylcinnamic aldehyde is effective against indole-like odor and benzaldehyde odor in the composition according to one embodiment of the present invention, the following test was carried out. Indole-like odor refers to a bad odor after reaction (for example, the odor of unreacted indole, and an odor that is not the odor of indole itself but is perceived by subjects as being similar to indole).

Indole, benzaldehyde, hexylcinnamic aldehyde (hereinafter also referred to as HCA), and lactic acid were dissolved in methanol to the molar concentrations shown in Table 1, and a sample was prepared so that the total volume of the solution was 1 mL. The sample was left to stand at 35°C for 24 hours, and then the test was performed. The indole-like odor and benzaldehyde odor of the sample were evaluated on a 5-point scale by 20 subjects. The 5-point scale was performed with "1" being very strong, "2" being strong, "3" being noticeable, "4" being weak but noticeable, and "5" being almost unnoticeable, and the average value of the subjects' evaluation was calculated. The average value was evaluated as follows: 4.0 to 5.0 was rated as ◎, 2.0 to 4.0 was rated as ○, and 1.0 to 2.0 was rated as △. The results are shown in Table 1.

As shown in Table 1, it was shown that when the molar ratio of benzaldehyde:hexylcinnamic aldehyde is in the range of 1:1/3 to 100, the indole-like odor and benzaldehyde odor are effectively suppressed.

[Reference Example: Performance test of aldehyde compounds]
In order to confirm the effect of reducing the malodor of aldehyde compounds, the following quantitative tests were carried out using various fragrances.

Next, indole, various compounds, and lactic acid were dissolved in methanol to the concentrations shown in Table 2, and samples were prepared so that the total volume of the solution was 1 mL. The various compounds used were (3) benzaldehyde, (4) hexyl cinnamic aldehyde, (5) benzyl salicylate, (6) limonene, and (7) hexyl salicylate. The samples were left to stand at 45°C for one day as measurement samples, and the reduction rate of indole was calculated.

The reduction rate was calculated by the following method. First, 1 mL of a methanol solution containing 0.1 mol/L of indole was analyzed using a gas chromatography analyzer manufactured by Agilent Technologies, and the peak area derived from indole was calculated, which was taken as the area of the reference sample when indole was present at 100%. Next, the measurement sample was analyzed using a gas chromatography analyzer, and the peak area derived from indole was measured. The area of the reference sample was compared with the area of the measurement sample, and the reduction rate of indole was calculated. The reduction rate was evaluated on a four-point scale, with 1 being 0-25%, 26-50%, 3 being 51-75%, and 4 being 76-100%. The results are shown in Table 2.

As shown in Table 2, in the comparative examples, the amount of indole after the test was reduced by 0 to 25% compared to the reference sample. In contrast, in the reference examples using samples containing benzaldehyde or hexyl cinnamic, the amount of indole after the test was reduced by 51 to 75% compared to the reference sample. In other words, it was shown that the amount of indole was reduced by the aldehyde compound.

[Reference Example: Evaluation of types of organic acids]
To examine which types of organic acids are effective, the following tests were carried out.

Except for the difference in the type and molar concentration of the organic acid, the test was performed in the same manner as in [Reference Example: Performance Test of Aldehyde Compounds]. The test sample was analyzed using a gas chromatography analyzer, and the peak area derived from indole was measured. The area of the reference sample was compared with the area of the test sample, and the reduction rate of indole was calculated. The reduction rate was evaluated on a four-level scale, with 1 being 0-25%, 26-50%, 3 being 51-75%, and 4 being 76-100%. The results are shown in Table 3.

As shown in Table 3, in Comparative Example 3-1, in which no organic acid was present, the amount of indole did not decrease at all compared to the reference sample. In contrast, in the Reference Example, in which an organic acid was present, the amount of indole in the measurement sample decreased compared to the reference sample. This indicates that benzaldehyde reacts effectively with indole in the presence of an organic acid, reducing the amount of indole.

In addition, in Reference Examples 3-1 to 3-4, which used samples containing hydroxycarboxylic acids with hydroxyl groups in the molecule, the amount of indole after the test was reduced by 26% or more compared to the reference sample. In other words, it was demonstrated that hydroxycarboxylic acids are effective among organic acids.

[Example: Cosmetic containing a composition for reducing malodorous compounds having an indole skeleton]
The following are examples of cosmetics produced as compositions for reducing malodorous compounds having an indole skeleton according to the present invention. The compositions are shown in weight percent.

Example 4-1 Shampoo 1. Sodium lauroyl hydroxyethyl-β-alanine 3.0% by weight
2. Sodium lauroyl methylalanine 3.0% by weight
3. N-lauroyl sarcosine triethanolamine 2.0% by weight
4. N-coconut oil fatty acid glutamic acid triethanolamine 2.0% by weight
5. Palm kernel oil fatty acid amidopropyl betaine 4.0% by weight
6. Sodium methyl cocoyl taurate 1.0% by weight
7. Cocamidopropyl betaine 2.0% by weight
8. Coconut oil fatty acid monoethanolamide 1.0% by weight
9. PPG-2 cocamide 1.0% by weight
10. Lauramide MIPA 1.0% by weight
11. Polyquaternium-10 (charge density: 1.3 meq/g) 0.1% by weight
12. Cationic guar gum (charge density: 0.4 meq/g) 0.1% by weight
13. Polykthonium-7 1.0% by weight
14. Polyoxyethylene (7) coconut oil fatty acid glycerin 1.0% by weight
15. Glycol distearate 1.0% by weight
16. Stearyltrimonium chloride 0.5% by weight
17. BG 0.1% by weight
18. Glycerin 0.1% by weight
19. Citric acid 0.1% by weight
20. Sodium benzoate 0.1% by weight
21. Phenoxyethanol 0.1% by weight
22. Methylparaben 0.1% by weight
23. Ethanol 0.1% by weight
24. Lactoferrin 0.1% by weight
25. Whey 0.1% by weight
26. Dipotassium glycyrrhizinate 0.1% by weight
27. Sodium glutamate 0.1% by weight
28. Caramel 0.01% by weight
29. Yellow No. 5 0.001% by weight
30. Water Balance 31. Benzaldehyde 0.005% by weight
32. Phenylacetaldehyde 0.01% by weight
33. Hexyl cinnamic aldehyde 0.05% by weight
34. Vanillin 0.001% by weight
35. Helional 0.05% by weight
36. Cyclamen aldehyde 0.05% by weight

A shampoo with the above composition was prepared by conventional methods.

Example 4-2 Hair conditioner 1. Cetyl alcohol 2.0% by weight
2. Behenyl alcohol 2.0% by weight
3. Cetyltrimethylammonium chloride 1.0% by weight
4. Stearyl trimethyl ammonium chloride 1.0% by weight
5. Distearyl dimethyl ammonium chloride 1.0% by weight
6. Hydroxyethyl cellulose 0.2% by weight
7. Hydroxypropyl methylcellulose 0.2% by weight
8. Paraffin 1.0% by weight
9. Liquid paraffin 1.0% by weight
8. Diethyl sebacate 1.0% by weight
9. Highly polymerized methylpolysiloxane 0.5% by weight
10. Aminoethylaminopropylsiloxane-dimethylsiloxane copolymer emulsion 1.0% by weight
11. Laureth-4 0.1% by weight
12. Laureth-23 0.1% by weight
13. Glutamic acid 0.4% by weight
14. Ceteth-6 0.3% by weight
14. Hydrogenated polyisobutene 0.5% by weight
15. Lactic acid 0.2% by weight
16. Citric acid 0.1% by weight
17. Sodium benzoate 0.1% by weight
18. Phenoxyethanol 0.1% by weight
19. Methylparaben 0.1% by weight
20. Ethanol 0.1% by weight
21. Lactoferrin 0.1% by weight
22. Whey 0.1% by weight
23. Dipotassium glycyrrhizinate 0.1% by weight
24. Sodium glutamate 0.1% by weight
25. Caramel 0.01% by weight
26. Yellow No. 5 0.001% by weight
27. Water balance 28. Benzaldehyde 0.15 wt%
29. 3-(pt-butylphenyl)-propylaldehyde 0.001% by weight
30. Hexyl cinnamic aldehyde 0.002% by weight
31. Ethyl vanillin 0.03% by weight
32. Heliotropin 0.03% by weight
33. α-amylcinnamic aldehyde 0.002% by weight

A conditioner of the above composition was prepared by conventional methods.

Example 4-3 Hair Treatment 1. Cetostearyl alcohol 3.0% by weight
2. Behenyl alcohol 3.0% by weight
3. Behenamidopropyldimethylamine 1.0% by weight
4. PPG-1/PEG-1 stearamine 1.0% by weight
5. Behenyl PG trimonium chloride 1.0% by weight
6. Hydroxyethyl cellulose 0.2% by weight
7. Hydroxypropyl starch phosphate 0.2% by weight
8. Adipic diglyceryl fatty acid ester 1.0% by weight
9. Liquid paraffin 1.0% by weight
10. Isodecyl neopentanoate 1.0% by weight
11. Methylpolysiloxane 1.0% by weight
12. (Bisisobutyl PEG-14/amodimethicone) copolymer 1.0% by weight
13. (C12-14) Pareth-7 0.2% by weight
14. (C12-14) Pareth-5 0.2% by weight
15. Glutamic acid 0.3% by weight
16. Isododecane 0.5% by weight
17. Lactic acid 0.5% by weight
18. Citric acid 0.3% by weight
19. Sodium benzoate 0.2% by weight
20. Phenoxyethanol 0.2% by weight
21. Methylparaben 0.2% by weight
22. Ethanol 0.1% by weight
23. Lactoferrin 0.1% by weight
24. Whey 0.1% by weight
25. Dipotassium glycyrrhizinate 0.1% by weight
26. Sodium glutamate 0.1% by weight
27. Caramel 0.01% by weight
28. Yellow No. 5 0.001% by weight
29. Water Balance 30. Benzaldehyde 0.08% by weight
31. Phenylpropylaldehyde 0.1% by weight
32. Hexyl cinnamic aldehyde 0.3% by weight
33. Anisaldehyde 0.01% by weight
34. p-Ethyl-2,2-dimethylhydrocinnamaldehyde 0.01% by weight
35. α-amylcinnamic aldehyde 0.01% by weight

A hair treatment with the above composition was prepared by conventional methods.

This invention can be used to reduce malodorous compounds.

Claims (8)

A composition for reducing malodorous compounds having an indole skeleton, comprising:
Contains aldehyde compounds and organic acids,
The aldehyde compound includes benzaldehyde and hexylcinnamic aldehyde,
The reduction is due to conversion of the malodorous compound to another compound.
A composition for reducing malodorous compounds having an indole skeleton. The composition for reducing malodorous compounds having an indole skeleton according to claim 1, wherein the aldehyde compound further comprises at least one selected from phenylacetaldehyde , phenylpropylaldehyde, cinnamic aldehyde, α-amylcinnamic aldehyde, hydratropic aldehyde, anisaldehyde, p-methylphenylacetaldehyde, cuminaldehyde, cyclamen aldehyde, 3-(p-t-butylphenyl)-propylaldehyde, p-ethyl-2,2-dimethylhydrocinnamaldehyde, 2 - methyl-3-(p-methoxyphenyl)-propylaldehyde, p-t-butyl-α-methylhydrocinnamic aldehyde, salicylaldehyde, heliotropin, helional , vanillin, ethyl vanillin, and methyl vanillin. The composition for reducing a malodorous compound having an indole skeleton according to claim 1 or 2 , wherein the molar ratio of said benzaldehyde to said hexylcinnamic aldehyde is in the range of 1:1/3-100. The composition for reducing a malodorous compound having an indole skeleton according to any one of claims 1 to 3 , wherein the organic acid is a hydroxycarboxylic acid. The composition for reducing malodorous compounds having an indole skeleton according to claim 4 , wherein the hydroxycarboxylic acid is at least one selected from the group consisting of lactic acid, malic acid, citric acid and salicylic acid. The composition for reducing a malodorous compound having an indole skeleton according to any one of claims 1 to 5 , wherein the malodorous compound is at least one selected from indole, 1-methylindole, 2-methylindole, 5-methylindole, 7-methylindole, and skatole. A cosmetic, a quasi-drug, a medicine, a food, a beverage, a sanitary product, an aromatic product, or a deodorizing product, comprising the composition for reducing a malodorous compound having an indole skeleton according to any one of claims 1 to 6. A method for reducing a malodorous compound having an indole skeleton, comprising: supplying a composition for reducing a malodorous compound having an indole skeleton described in any one of claims 1 to 6 to a location where the malodorous compound is present; and at least one selected from a cosmetic, a quasi-drug, a pharmaceutical, a food, a beverage, a sanitary product, an aromatic product, and a deodorant product described in claim 7.