JP2001198205A - Deodorant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorant having high deodorizing efficiency, not causing color change or sedimentation even if allowed to stand in a liquid state for a long time, having stability with the elapse of time and capable of being used safely and simply. SOLUTION: A deodorant contains a plant extract as an effective component and also contains at least one organic acid selected from the group consisting of L-tartaric acid, maleic acid, succinic acid, malic acid, citric acid and lactic acid, at least one wetting agent selected from the group consisting of alkali salts of these organic acids, glycerine, ethylene glycol and propylene glycol and ketonic acid in a state dispersed in alcohol.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a deodorant for eliminating various unpleasant odors.
More specifically, the invention of this application relates to a deodorant containing a plant extract as an active ingredient.

[0002]

2. Description of the Related Art There are various types of foul odors and off-flavors, and the sources of such odors are factory smoke and waste liquids, kitchens, smoking,
Garbage, human waste and various. Particularly at home, odors from kitchens, toilets, pets, smoking, garbage and the like are generally regarded as unpleasant. Therefore, in order to establish a comfortable living environment, countermeasures against malodors and odors are important issues.

[0003] As a method for eliminating such malodors and off-flavors, various methods which can be roughly classified into the following four methods have been proposed. (1) Sensory deodorizing method: A deodorizing method by masking offensive odors and off-flavors with an aromatic substance (such as aroma oil). (2) Physical deodorization method: The odor is diluted by ventilation and diffusion,
A deodorizing method in which a malodor is adsorbed by silica gel or activated carbon, or a malodorous substance is included by an inclusion compound such as cyclodextrin. (3) Chemical deodorizing method: A method of chemically reacting (neutralizing, adding, condensing, oxidizing, etc.) a malodorous or off-flavor component to deodorize it.
For example, an open flame combustion method or an oxidation method using an oxidizing agent such as ozone or potassium permanganate. (4) Biological deodorizing method: a deodorizing method by killing microorganisms that cause putrefaction to prevent putrefaction and preventing the generation of offensive odor.

However, each of these methods has many problems as a method of removing an offensive odor, and it is hardly sufficient. That is, in the sensory deodorization method (1), since the malodor is covered by the odor of the deodorant itself such as an aromatic substance, the fragrance component is always volatilized, and it is difficult to balance the odor and the odor. However, the type and intensity of the fragrance possessed by the deodorant differ depending on the taste of the individual, and may sometimes cause disgust, which is difficult to say as an effective deodorant method. On the other hand, in the physical deodorization method (2), the ventilation / diffusion method represented by a ventilation fan requires a ventilation / diffusion device, and the room temperature fluctuates greatly due to ventilation / diffusion, thereby deteriorating the indoor environment. In the adsorption method, there is a problem that the action of adsorbing the malodorous component does not continue when the adsorption of the malodorous or off-flavor component reaches saturation. In the chemical deodorization method (3), it is extremely difficult to select a substance that effectively reacts to a variety of odorous substances. However, they are often ineffective because they may be deteriorated in the air. Furthermore, although the biological deodorization method (4) is suitable for odors caused by putrefaction of garbage and the like, it is not suitable as a method for removing odors in other atmospheres, and has a disadvantage that its effect is slow to be exhibited. Have.

[0005] Therefore, there has been a demand for a simple method capable of effectively and safely deodorizing a strong odor without covering the odor and without requiring any special device. On the other hand, plants such as perilla, parsley, hiba and bamboo, and charcoal made from natural wood have been known to have air purifying and deodorizing effects since ancient times. Due to the effects of chemical substances on the human body and interest in environmental conservation, such natural deodorizing methods have recently been reviewed, and various deodorizing methods using plant extracts that are safe and have no odor as active ingredients have been reviewed. Odorants have been proposed.

[0006]

However, deodorizing components extracted from plants have poor deodorizing ability as compared with synthetic substances and physical adsorption. This is problematic in that the stability over time is poor.

[0007] In view of such circumstances, the invention of the present application is directed to various odors that are unpleasant in a living space, for example, amines such as trimethylamine, which are putrid odors of fish and meat, and putrid odor of eggs and milk. It has high deodorizing efficiency against hydrogen sulfide, mercaptans such as methyl mercaptan which is a putrid smell of vegetables and garbage, ammonia which is a bad odor source in toilets, and organic acids such as butyric acid which is an odor substance of sweat and body odor. Provided is a safe and easily usable deodorant having stable stability over time without causing a change in hue or precipitation even when left for a long time.

[0008]

Means for Solving the Problems To solve the above-mentioned problems, the invention of the present application is to provide a plant extract comprising an active ingredient, L-tartaric acid, maleic acid, succinic acid, malic acid, citric acid and lactic acid. At least one organic acid selected from the group consisting of or an alkali salt of these organic acids;
A deodorant comprising at least one wetting agent selected from the group consisting of glycerin, ethylene glycol and propylene glycol, and a ketone acid, wherein these preparations are dispersed in alcohol.
(Claim 1).

In the invention of this application, the ketone acid is selected from the group consisting of pyruvic acid, benzoylformic acid, phenylpyruvic acid, acetoacetic acid, propionylacetic acid, benzoylacetic acid, levulinic acid, and β-benzoylpropionic acid. At least one kind (Claim 2) and, in the deodorant, the pH of the deodorant is 6 to 8 (Claim 3) are provided as embodiments.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the deodorant of the invention of this application, plant materials are not particularly limited, but, for example, Karabami, Dokudami, Tsuga, Ginkgo, Japanese black pine, Larch, Japanese red pine, Kiri, Holly Mokusei, Lilac,
It is preferable to use quince, butterbur, camellia and forsythia. However, the present invention is not limited to these plants. In addition to the above, other Lentaceae plants, Pinaceae plants, and the like can be widely used.

[0011] The deodorant of the invention of this application uses substances extracted from the organs such as leaves, petiole, flowers, fruits, stems, roots and bark of these plants as effective deodorants. The extraction method is not specified, and various known methods are applied. For example, one or more hydrophilic organic solvents such as alcohols such as ethanol and methanol, and ketones such as methyl ethyl ketone and acetone are added, and the deodorizing active ingredient is thermally extracted using a Soxhlet extractor or the like. Is adopted. Further, in this extraction method, the odor component of the raw material plant may be eluted and removed in advance using a hydrophobic organic solvent such as hexane or petroleum ether. Further, in the deodorant of the invention of this application, the operation of extracting the deodorant active component may be one in which the removal of the odor component of the raw material plant and the extraction of the deodorant component are simultaneously performed using a steam distillation method. .

[0012] The extract thus obtained is added to at least one organic acid selected from the group consisting of L-tartaric acid, maleic acid, succinic acid, malic acid, citric acid and lactic acid, or an alkali salt thereof, glycerin. By adding at least one wetting agent selected from the group consisting of propylene glycol, ethylene glycol, and ketone acid, the deodorant of the invention of this application is obtained. Also,
If necessary, after distilling off the solvent from the extract, or concentrating the extract to obtain the extract as a solid or liquid, dilute the extract with an appropriate solvent, and add the above substance. Is also good.

In the deodorant of the present invention, an organic acid or an alkali salt thereof is added to enhance the deodorizing power against nitrogen-based odor. The addition amount of the organic acid or the alkali salt thereof is not particularly limited, but is 0.1 to 250 parts by weight based on 1 part by weight of the plant extract as the deodorizing active ingredient.
It is preferably in parts by weight. When a plurality of organic acids or alkali salts thereof are added, the total amount thereof is 0.1 to 250 parts by weight. If the amount is less than 0.1 part by weight, the deodorizing power of nitrogen-based odor cannot be sufficiently obtained, and even if added more than 250% by weight, the deodorizing power does not increase, and the effect of the deodorizing component is hindered. Might be.

Further, in the deodorant of the invention of the present application, the addition of a wetting agent maintains the uniformity of the deodorant, and at the same time provides a preservative effect. The humectant may be any of glycerin, propylene glycol, or ethylene glycol. The amount of addition is not particularly limited, either, but 10 parts by weight based on 1 part by weight of the plant extract.
It is preferably from 1000 to 1000 parts by weight. If the amount is less than 10 parts by weight, no effect is exhibited, and if it exceeds 1000 parts by weight, the viscosity increases, and it becomes difficult to mix and handle other components.

Further, in the deodorant of the invention of this application, the addition of ketone acid further enhances the deodorizing power against nitrogen-based odor. Also, by the addition of ketone acid,
Changes in hue, generation of precipitates, deterioration of deodorizing power, and the like are suppressed, and the deodorant is provided with stability over time. The amount of ketone acid added is not particularly limited, but is preferably 0.1 to 500 parts by weight based on 1 part by weight of the extract. 0.
If the amount is less than 1 part by weight, the expected effect does not appear. If the amount exceeds 500 parts by weight, a change in pH occurs or the effect of other components is adversely affected.

In order to further enhance the deodorizing effect of the deodorant thus prepared, the pH of the deodorant is adjusted to 6 to 8 by adding an alkaline solution such as sodium hydroxide or a buffer solution. Is preferred.

The form of use of the deodorant of the invention of the present application is not particularly limited, and various forms such as liquids, aerosol preparations, impregnation into carriers, molding into powders, tablets and granules can be used. It can be selected from shape and form.

Hereinafter, examples will be shown, and embodiments of the present invention will be described in more detail. Of course, the present invention is not limited to the following examples, and it goes without saying that various aspects are possible in detail.

[0019]

Example 1 Forsythia was extracted with water at 60 ° C. for 3 hours, and the obtained extract was concentrated to dryness with a freeze dryer to obtain a solid extract. Water, an aqueous sodium lactate solution, levulinic acid, and glycerin were added to the obtained extract and mixed, and then the pH of the aqueous solution was adjusted to 6.5 by adding sodium hydroxide to the obtained aqueous solution. Table 1 shows the composition of the obtained deodorant.

The deodorant was diluted to 10 volumes with water,
5 ml into an Erlenmeyer flask L, and further add 6000 ppm of ammonia gas or 1400 of trimethylamine gas.
ppm were separately charged and sealed. After a predetermined time,
Measure the residual gas concentration in each container using a gas detector tube,
The deodorization rate was calculated by the following equation (1).

Deodorization rate (%) = [(initial gas concentration−gas concentration after predetermined time) / initial gas concentration] × 100 (1) Table 2 shows the obtained deodorization rates. Comparative Example 1 Water, an aqueous sodium lactate solution, and glycerin were added to the extract obtained in the same manner as in Example 1 without adding levulinic acid so as to have the composition shown in Table 1, and mixed. An aqueous solution of sodium hydroxide was added to the obtained aqueous solution to adjust the pH of the aqueous solution to 6.5.

The deodorizing rate of the obtained deodorant was determined in the same manner as in Example 1. The results are shown in Table 2. Example 2 Forsythia was extracted with water at 50 ° C. for 4 hours, and the obtained extract was concentrated to dryness with a freeze dryer to obtain a solid extract. Water, an aqueous sodium lactate solution, levulinic acid, and glycerin were added to the extract with the composition shown in Table 1 and mixed. After that, sodium hydroxide was added to the obtained aqueous solution to adjust the pH of the aqueous solution to 6.5. .

The deodorizing rate of the obtained deodorant was determined in the same manner as in Example 1. The results are shown in Table 2. Comparative Example 2 Water, levulinic acid, and glycerin were added to the extract obtained in the same manner as in Example 2 without adding sodium lactate according to the composition shown in Table 1, followed by mixing. Was added to adjust the pH of the aqueous solution to 6.5.

The deodorizing rate of the obtained deodorant was determined in the same manner as in Example 1, and the results are shown in Table 2. Example 3 Water, sodium lactate, levulinic acid, and glycerin were added to the extract obtained in the same manner as in Example 1 in the composition shown in Table 1, and sodium hydroxide was added to an aqueous solution obtained by mixing. The pH was set to 6.5.

The deodorizing rate of the obtained deodorant was determined in the same manner as in Example 1. The results are shown in Table 2. Comparative Example 3 Water and glycerin were added to the extract obtained in the same manner as in Example 3 without adding sodium lactate and levulinic acid in the composition shown in Table 1, and mixed. Sodium oxide was added to adjust the pH to 6.5.

The deodorizing rate of the obtained deodorant was determined in the same manner as in Example 1. The results are shown in Table 2. From the above, the deodorants of Examples 1 to 3 were 90% for ammonia,
It was found that trimethylamine had an effect of deodorizing 80% or more. In contrast, Comparative Examples 1 to
It was shown that the deodorant of No. 3 was inferior in deodorizing effect to any gas.

When the state of the deodorant during the deodorizing test was observed, the deodorants of Examples 1 to 3 did not show any change in the hue of the liquid or the formation of a precipitate, and were stable over time. Turned out to be high. On the other hand, the hue of the deodorant of Comparative Examples 1-3 was changed.

From the above, in the deodorant of the invention of this application,
It was shown that the deodorizing power and the stability over time were reduced when any of the organic acid (salt), the wetting agent, and the ketone acid were lacking.

[0029]

As described in detail above, according to the present invention, the odor which is generally felt unpleasant can be deodorized with high efficiency by adding an organic acid or an alkali salt thereof and a ketone acid, and can be stabilized with time by a wetting agent. Provided is a safe deodorant containing a plant extract as an active ingredient, which retains its properties.

Claims (3)

[Claims] 1. A plant extract comprising at least one organic acid selected from the group consisting of L-tartaric acid, maleic acid, succinic acid, malic acid, citric acid and lactic acid, or an alkali salt of these organic acids. A deodorant comprising at least one humectant selected from the group consisting of glycerin, ethylene glycol and propylene glycol, and a ketone acid, wherein these preparations are dispersed in alcohol. 2. The ketone acid is at least one ketone acid selected from the group consisting of pyruvic acid, benzoylformic acid, phenylpyruvic acid, acetoacetic acid, propionylacetic acid, benzoylacetic acid, levulinic acid, and β-benzoylpropionic acid. The deodorant according to claim 1, wherein 3. The deodorant according to claim 1, wherein the pH is 6 to 8.