JPH06121822A - Deodorant - Google Patents

Abstract

PURPOSE:To enable the removal of odor of amines and mercaptans efficiently with higher safety by using a deodorant containing an ester pyurvate as effective component. CONSTITUTION:Pyruvic acid is a vital intermediate product in a metabolism path for substance in vivo and a substance nontoxin to a human being which is prepared in an anaerobic manner with an Embden-Mayerhof-Parnas pathway involving glycolysis and alcohol fermentation and further, oxidized completely in a aerobic manner via a citrate cycle. Ester pyruvic acid used as effective component is a keto or enol tautomerism body as given by the formula. The application of the component is, for example, one method to remove halitosis as mainly caused by methyl mercaptan and enables the removal of halitosis efficiently by blending it into a flavor used in mouth washing liquids, gums and the like or other methods. The deodorant thus obtained is utilized for malodorous garbage and offensive smell of toilets by a method of mixing into scents or blending into an aerosol product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant capable of effectively removing odors such as amines and mercaptans.

[0002]

2. Description of the Related Art Conventionally, examples of oil-soluble deodorants used for the purpose of removing the odor of amines and mercaptans include methacrylic acid esters and aldehydes.

However, lauryl methacrylate, which is generally used as a methacrylic acid ester, has a poor deodorizing effect on the odors of amines and mercaptans, and cinnamic aldehyde and benzaldehyde known as aldehydes. , Citral,
Citronellal and the like can deodorize the odors of amines relatively efficiently, but have the drawback that the deodorizing effect is not sufficient for the odors of mercaptans and that their use is limited.

[0004]

An object of the present invention is to provide a deodorant having high safety and capable of efficiently removing odors of amines and mercaptans.

[0005]

According to the present invention, there is provided a deodorant containing pyruvate as an active ingredient.

The present invention will be described in detail below.

[0007] Pyruvate is an important intermediate in the metabolic pathway of substances in the body, and is anaerobically produced by the pathways of Emden-Meyerhof and Parnas, which are involved in glycolysis and alcohol fermentation, and aerobically after the citric acid cycle. It is known to be a substance that is completely oxidized and is not toxic to the human body.

The pyruvic acid ester used as an active ingredient in the present invention is a keto or enol tautomer represented by the following chemical formula 1.

[0009]

[Chemical 1]

The pyruvic acid ester represented by the above chemical formula 1 is, for example, R is alcohol, linear or cyclic alkyl group having 1 to 18 carbon atoms, alkenyl group, phenyl group, alkylphenyl group, benzyl group or Examples thereof include compounds having an alkylbenzyl group, and more specifically, R is a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, an amyl group, an isoamyl group, a hexyl group, or cyclohexyl. Group, heptyl group, octyl group, nonyl group, decyl group, benzyl group, phenylethyl group, phenylpropyl group, methylbenzyl group, dimethylbenzyl group, trimethylbenzyl group, p-
Examples thereof include an isopropylbenzyl group, a p-ethylbenzyl group, a citronellyl group, and a geranyl group, which may be used alone or as a mixture when used.

To prepare the pyruvic acid ester,
It can be obtained by a method of esterifying pyruvic acid by a known method or a method of oxidizing a lactate ester.

In the deodorant of the present invention, the content ratio of the pyruvate ester used as an active ingredient varies depending on the concentrations of amines and mercaptans to be deodorized.
The deodorant may be contained in an amount of 0.001% by weight or more, preferably 0.01 to 50.0% by weight, based on the entire deodorant.

The deodorant of the present invention may contain pyruvic acid ester, but it can be used in combination with other deodorants, and further, an antioxidant, a pH adjusting agent, a preservative, a fragrance, Ordinary additives such as surfactants, dyes and ultraviolet absorbers may be added. Furthermore, when used as a deodorant, the form can be liquid, powder, gel, granular or the like depending on the use.

Further, its use is to remove halitosis efficiently by, for example, a method of removing bad breath, which is mainly caused by methyl mercaptan, by adding it to a fragrance used for mouthwash, gum, candy, toothpaste, etc. You can Further, for the garbage odor generated around the kitchen and the bad smell of the toilet, it can be used by a method of mixing with various fragrances with a fragrance, a method of blending it into an aerosol product, or the like.

Further, the deodorant of the present invention has a bad odor in a refrigerator,
It can be used for deodorizing offensive odors from sewage treatment plants, garbage sewage treatment plants, livestock houses, etc.

[0016]

EFFECT OF THE INVENTION Since the deodorant of the present invention contains the esters of pyruvic acid, which is an important intermediate in the metabolic pathway in the body, as the active ingredient, it is highly safe and can be used as a conventional oil deodorant. In comparison, it exhibits an excellent deodorizing effect.

[0017]

EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

[0018]

[Example 1] Deodorizing effect of pyruvate ester on ammonia odor 0.5 g of polyethylene fiber was used as a sample, and ethyl pyruvate, isoamyl pyruvate, benzyl pyruvate,
What was uniformly adhered with 0.5 g of a 10% diethylene glycol monoethyl ether solution of phenylethyl pyruvate or citronellyl pyruvate was placed in a 700 ml wide-mouthed container, and then with a microsyringe, ammonia water 1.
2 μl was poured so as to be attached to the inner wall of the container without directly touching the polyethylene fiber, and the container was sealed with a silicone stopper equipped with a glass tube with a cock. 10 minutes later, 30 minutes later, 6
After 0 minutes, the ammonia concentration in the container was measured with a Kitagawa gas detector tube, and the deodorizing rate was calculated by the following formula. The results are shown in Table 1. The initial concentration of ammonia is 280 ppm
Met.

Deodorizing rate measuring method Deodorizing rate (%) = [(C−S) / C] × 100 S; odor gas concentration in sample and container ppm C; control, odor gas concentration in container ppm control As the solution, 10% DEP (diethyl phthalate) and diethylene glycol monoethyl ether solution were used.

[0020]

[Comparative Example 1] Deodorizing effect of lauryl methacrylate on ammonia odor
The deodorizing effect on the smell of ammonia was measured in the same manner as in Example 1 except that lauryl methacrylate was used as the fruit sample. The results are shown in Table 1.

[0021]

[Table 1]

[0022]

[Example 2] Deodorization of pyruvate ester against methyl mercaptan odor
Odor effect The deodorizing effect on methyl mercaptan was measured in the same manner as in Example 1 except that methyl mercaptan was used instead of ammonia. The initial concentration of methyl mercaptan is
It was adjusted to 7 to 10 ppm. The results are shown in Table 2.

[0023]

[Comparative Example 2] The smell of lauryl methacrylate against methyl mercaptan
The deodorizing effect on methyl mercaptan was measured in the same manner as in Example 2 except that lauryl methacrylate was used as the sample. The results are shown in Table 2.

[0024]

[Table 2]

[0025]

Example 3

[0026]

Example 4

Claims (1)

[Claims] 1. A deodorant containing pyruvate as an active ingredient.