JP2000327512A - Antimicrobial deodorant and filter using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a safe antifungal deodorant that can exhibit the antifungal and deodorant effect of plant polyphenols sufficiently for a long period of time without damage of these effects by using plant polyphenols and a hygroscopic substance. SOLUTION: This antifungal and deodorant agent comprises (A) plant polyphenols and (B) a hygroscopic substance at a weight A/B ratio of preferably about 1/0.1-1/5, more preferably 1/0.5-1/2. The component A is preferably extracted from fruits, seeds, fruit rinds or the like of persimmons, apples, grapes, cacao, grapefruits, chestnuts, blueberries, tamarinds and the like. The component B is, for example, polyhydric alcohols, polyethers, saccharides, polysaccharides, celluloses, acrylic compounds, silicic acid compounds or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel antibacterial deodorant utilizing the antibacterial and deodorizing effects of plant polyphenols extracted from plants, and an air purifying filter using the same. .

[0002]

2. Description of the Related Art About 20 types of odor components generated by smoking are known even if they have been identified. The main components are acetic acid, ammonia, and acetaldehyde. Of these, acetic acid and ammonia can be removed relatively easily by neutralizing with acidic and alkaline substances, respectively. Removal is said to be difficult.

[0003] In addition, as the airtightness of the room is improved due to the change of the building structure, the effect of volatile substances (VOC), particularly formaldehyde, generated from wallpaper adhesives and new building materials on the human body is increasing. It is regarded as a so-called sick house syndrome, and deformalization of architecture is progressing to respond to it, but the progress is slow, especially when the building was already built without deformalization treatment. At present, almost no countermeasures have been taken against the old buildings. In addition, formaldehyde is a neutral substance like the acetaldehyde, and thus has a problem that its removal is not easy.

[0004] Similarly, it has been reported that influenza and the like are becoming more liable to be transmitted than before with the improvement in indoor airtightness. In particular, antibacterial and deodorizing indoor environments will be important in the future. It is becoming an issue.

[0005] In recent years, with the growing trend toward cleanliness, there is a tendency that products declaring antibacterial activity are commercialized in many fields, but on the contrary, the safety of the antibacterial agent itself added to the product is reduced. There is also a growing voice of concern about the need for safe, so-called human-friendly antibacterial agents.

[0006]

For example, plant polyphenols represented by tea extract components or fruit extract components such as persimmons and apples (usually a plurality of polyphenols such as tannins, catechins and flavonoids) Is a naturally-occurring component that is excellent in safety and has the effect of inhibiting the growth of bacteria and viruses, that is, has an antibacterial effect, and is also effective against odor components such as ammonia, amines, and aldehydes. It is also known to have a strong deodorizing effect.

Therefore, the use of such plant polyphenols as an antibacterial deodorant has been studied. For example, Japanese Patent Application Laid-Open No. 10-315 discloses that catechins among tea extract components can be used as a fungicide or the like. It is described that, together with other components, it adheres to the surface of a fiber constituting a filter for an air purifier.

[0008] Similarly, Japanese Patent Application Laid-Open No. Hei 9-141021 describes that catechins and the like are also adhered to the surface of a porous sheet such as a nonwoven fabric.

However, plant polyphenols exhibit good antibacterial and deodorizing effects in the presence of moisture, but do not function sufficiently in a dry state. Although it depends on humidity, etc., the antibacterial and deodorizing effects may not be sufficiently exhibited.

[0010] When the plant polyphenols are used in a bare state as described above, the plant polyphenols are gradually lost due to oxidative deterioration or hydrolysis and the like. There are also problems with sustainability.

JP-A-8-291013 discloses an antibacterial deodorant in which the above-mentioned plant polyphenols are retained on activated carbon in the form of an aqueous solution.

In such a configuration, water is present in the same system, that is, since the plant polyphenols and water are held together in the pores of the activated carbon, the antibacterial and deodorizing effects of the plant polyphenols are reduced. It can always be fully exerted regardless of humidity conditions.

[0013] Accordingly, it is expected that the activated carbon itself has a function of adsorbing odor components and deodorizing, and thus can improve the antibacterial and deodorizing effects more than before.

Since the plant polyphenols are retained in the pores of the activated carbon as described above, the oxidative deterioration and the progress of hydrolysis are suppressed as compared with the prior art, so that the antibacterial and deodorizing effects are maintained. It is expected that the property will be improved.

However, the present inventors have examined the above configuration, and found that activated carbon releases water in a short period of time, especially in a dry environment, because water cannot be retained for a long period of time.
At that time, the antibacterial and deodorizing effects were significantly reduced, and it was revealed that the persistence of the effects was not actually improved much.

An object of the present invention is to provide a novel antibacterial deodorant which can be sufficiently exerted over a long period of time without impairing the antibacterial and deodorizing effects of plant polyphenols, and which is safe and human-friendly. And a filter for air cleaning using the same.

[0017]

The antibacterial deodorant of the present invention for solving the above-mentioned problems comprises a plant polyphenol,
And a hygroscopic substance.

The filter of the present invention is characterized in that the above-mentioned antibacterial deodorant is carried on a substrate having air permeability.

According to the present invention, water is constantly replenished from the atmosphere by the hygroscopic property of the hygroscopic substance.
The function of enhancing the antibacterial and deodorizing effects of the plant polyphenols by the water is stably maintained over a longer period than before.

Further, according to the present invention, the surface of the antibacterial deodorant is constantly exposed to bacteria, viruses, odor substances such as ammonia and acetic acid, and also SO _X which is an air pollutant, due to the hygroscopicity of the hygroscopic substance. , since maintaining a state of being wetted easily adsorbed and NO _X, the function of the plant polyphenols is assisted than ever, is reinforced.

Further, by being mixed with a hygroscopic substance, the plant polyphenols are protected from being exposed, and the oxidative deterioration and the progress of the hydrolysis are suppressed. As a result, the antibacterial and deodorizing effects are maintained. Be improved.

Moreover, the above-mentioned plant polyphenols are naturally occurring components and have excellent safety as described above.

Therefore, the antibacterial deodorant of the present invention not only does not impair the antibacterial and deodorant effects of the plant polyphenols, but also enhances these effects by the action of the above-mentioned hygroscopic substance, Antimicrobial, over a period of time
The deodorizing effect can be sufficiently exerted, and it is safe and human-friendly.

Further, the filter of the present invention using the above-mentioned antibacterial deodorant utilizes the above-mentioned characteristics to provide, for example, an air conditioner, an air purifier, an oil fan heater, a humidifier, a dehumidifier,
It can be suitably used as a filter for air cleaning, such as a vacuum cleaner and a mask.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the antibacterial deodorant of the present invention will be described.

The antibacterial deodorant of the present invention contains a plant polyphenol and a hygroscopic substance as described above.

As the plant polyphenols, as described above, tea extract components, or persimmons, apples, grapes,
Extractable components from the pulp, seeds and skin of fruits such as cacao, grapefruit, chestnut, blueberry and tamarind can be used.

However, the latter extractive component from fruits is superior to the former tea extractive component in antibacterial and deodorant effects, and is also superior in the durability and sustainability of the effect. Is preferably used.

The reason for this is that the latter, extracted from fruits, has a greater number of phenolic hydroxyl groups which are considered to function for antibacterial and deodorant purposes than the former, extracted from tea. The hydrolyzable tannins mainly contained in tea extract components are easily cut at the center of the eight phenolic hydroxyl groups by the action of acids or enzymes, and epicatechin and epicatechin, which are also abundant in tea extract components Simple polyphenols (catechins) such as gallocatechin are easily oxidized and degraded or hydrolyzed, whereas condensed tannins, which are mainly contained in components extracted from fruits, form large molecules that are not affected by hydrolysis. And that it has the property of being further condensed and polymerized by the action of enzymes, alcohols and the like.

A method for obtaining an extract component from fruits can be appropriately selected depending on where a large amount of plant polyphenols is contained in fruits.

For example, in the case of fruits such as persimmons and apples whose pulp contains a large amount of plant polyphenols, an extracted component can be obtained in the same manner as in a normal juice production method. That is, if necessary, the raw fruit from which the seeds and the skin have been removed may be squeezed or pulverized, and then the juice may be separated and collected.

The obtained juice is an aqueous solution containing a plurality of plant polyphenols as an extract component. Usually, the juice is used as it is, or is concentrated or diluted by adding water to an appropriate concentration. Use as prepared. However, the recovered fruit juice may be once dried by freeze-drying or the like to solidify the plant polyphenols as an extract component, and then dissolved in water for use.

In the case of fruits such as grapefruit which contain a large amount of plant polyphenols in their seeds, an extract of the plant polyphenols can be obtained by extracting the seeds with alcohol or the like.

As for the kind and state of the fruit, for example, in the case of persimmons, astringent persimmons have less sugar content than sweet persimmons and immature fruits have less sugar content than mature persimmons. It is suitable because it contains many plant polyphenols which are antibacterial and deodorant components. The fact that immature plants have more plant polyphenols than mature plants generally means that plants in the immature state where seeds have not completely grown, produce bitterness, pungency, astringency, etc. It is believed to have the instinct to defend against being eaten.

As the hygroscopic substance constituting the antibacterial deodorant of the present invention together with the above-mentioned plant polyphenols, any of various hygroscopic substances can be used. Then, for example, at least one selected from polyhydric alcohols, polyethers, saccharides, polysaccharides, celluloses, acrylic compounds, and silicate compounds is suitably used.

Specific examples thereof include, but are not limited to, the following compounds.

Polyhydric alcohols: sorbitol, glycerin, polyvinyl alcohol and the like.

Polyethers: polyethylene glycol, polypropylene glycol, polybutylene glycol and the like.

Saccharides: glucose, saccharose and the like.

Polysaccharides: chitin and the like.

Cellulose: hydroxyethyl cellulose, methyl cellulose, ethyl cellulose and the like.

Acrylic compounds: polyacrylates, polyacrylamides, acrylamide-acrylate copolymers and the like.

Silicic acid compounds: silica gel, water glass, etc.

However, the hygroscopic substance is not limited to the above compounds, and other than the above, for example, lactide and the like can be used as the hygroscopic substance.

The mixing ratio of the plant polyphenols A and the hygroscopic substance B is not particularly limited, but the weight ratio A / B
A / B is preferably about 1 / 0.1 to 1/5, and more preferably A / B is about 1 / 0.5 to 1/2.

When the proportion of the hygroscopic substance is smaller than this range, the effect of replenishing the water due to the addition of the hygroscopic substance becomes insufficient, and the antibacterial properties of the plant polyphenols are reduced. There is a possibility that the deodorizing effect cannot be sufficiently exerted over a long period of time.

Conversely, when the proportion of the hygroscopic substance is higher than this range, the proportion of the plant polyphenols is relatively small, so that the antibacterial and deodorizing effects of the plant polyphenols are also maintained for a long time. Over time.

There are various methods for producing the antibacterial deodorant of the present invention. The plant polyphenols are usually supplied in the form of an aqueous solution, as described above. Considering that it has excellent affinity for water (hydrophilicity) as shown in the above and usually has good water solubility, it is better to add a hygroscopic substance to an aqueous solution of plant polyphenols, stir and mix uniformly. Is the most efficient and preferred manufacturing method.

At this time, the stirring and mixing of the two components are further facilitated, and, for example, in the case of a filter to be described later, the liquid is adjusted to a concentration suitable for application to a substrate. Further, water may be added.

However, for example, a hygroscopic substance which exhibits a liquid or viscous liquid at around normal temperature, or softens at or above normal temperature and below the decomposition temperature of plant polyphenols even if it does not exhibit a liquid at around normal temperature. When using a liquid or a viscous liquid-like hygroscopic substance,
By adjusting the mixing conditions (especially the mixing temperature in the latter case) and the like, it is possible to omit water at all.

The antibacterial deodorant of the present invention can take various forms from liquid to solid depending on the state of the hygroscopic substance and the amount of water to be added. In some embodiments, it can be used for antibacterial deodorant applications.

For example, an antibacterial deodorant exhibiting a liquid or viscous liquid is contained in a porous container or the like, and is used for the same purpose as a conventional deodorant. It is also used for the same applications as conventional antibacterial agents, such as by impregnating it in articles. The liquid antibacterial deodorant can also be used as a deodorant of the type that is sprayed on the surface of the article to be deodorized.

The gel or solid antibacterial deodorant is
A molded article having a predetermined shape is used as it is or in a container having an appropriate shape, and is used for the same purpose as a conventional deodorant.

The solid antibacterial deodorant is used for the same purpose as a conventional antibacterial agent by, for example, dispersing a crushed product in a synthetic resin molded product.

Further, each of the antibacterial deodorants in each of the above-mentioned states is mixed with a binder described below, applied to the surface of the article, and then solidified or cured to form a coating film. It can also be used for

However, the antibacterial deodorant of the present invention is used for a filter for purifying air, as described above.
It is preferable because the antibacterial and deodorizing effects can be sufficiently exhibited.

The antibacterial deodorant used for deodorizing may be added with a fragrance, a coloring agent, or the like as in the prior art.

Next, the filter of the present invention will be described.

The filter of the present invention is constituted by carrying the antibacterial deodorant of the present invention on a substrate having air permeability as described above.

Examples of the base material include nonwoven fabrics and woven fabrics including those made of incombustible fibers such as glass fibers, papers such as noncombustible paper, porous sheets, urethane foams and the like.
A base material that has air permeability itself, or a plate material that does not have air permeability itself, such as a metal plate or a plastic plate, is assembled into a shape having air permeability such as a corrugated core shape or honeycomb shape. However, any of them can be used.

Of the former materials, the substrate having air permeability per se is preferably made of a material for both components constituting the antibacterial deodorant in order to maintain the antibacterial deodorant of the present invention well. Those formed of a material having good affinity are preferably used. Examples of such a material include a polymer material having an anionic functional group (such as a carboxyl group and a sulfone group), and a cellulosic fiber.

In terms of structure, bulky antibacterial deodorants are preferably used so that a large amount thereof can be held.

Alternatively, when an electretized nonwoven fabric having a function of collecting microparticles such as bacteria and dust floating in the air by its own electrostatic force is used as a base material, it is possible to obtain a highly efficient collection with a low pressure drop. Antibacterial and deodorant effects can be expected. As such electretized nonwoven fabric,
In particular, an electret type melt blown nonwoven fabric and a split fiber nonwoven fabric having high collection efficiency are suitable.

In order to carry the antibacterial deodorant on the substrate, for example, a liquid containing the antibacterial deodorant may be applied to the substrate, or the substrate may be dipped in the liquid and then pulled up. Further, the filter may be formed directly by paper-making the above-mentioned liquid together with pulp and shaving an antibacterial deodorant therein.

As described above, when the antibacterial deodorant exhibits a liquid or viscous liquid at around normal temperature, the concentration of the antibacterial deodorant as it is or by adding water is used. Can be used as the above-mentioned liquid in a state where is adjusted appropriately.

When the antibacterial deodorant is in a gel or solid state at around room temperature, water may be added to form a solution, or heated and liquefied may be used as the above liquid.

The liquid is solidified or cured after being applied or impregnated on the substrate to form a film containing an antibacterial deodorant on the surface of the substrate or on the surface of fibers such as paper constituting the substrate. Alternatively, a binder that functions to firmly bind the pulp may be added in the state where the antibacterial deodorant has been incorporated during papermaking of the filter.

As such a binder, for example, a water-soluble or emulsion-based synthetic resin such as an acrylic resin, an acrylic-silicone resin, an acrylic-urethane resin, a urethane resin, a water-soluble epoxy resin, a water-based vinyl urethane resin, and an air-dry fluororesin is used. Examples thereof include resins, natural resins such as shellac resin, copal rubber and dammar rubber, inorganic binders such as colloidal silica, and organic / inorganic hybrid type binders such as a composite of polyisocyanate and colloidal silica.

The amount of the binder added was 1% of the total amount of the antibacterial deodorant.
It is preferably about 5 to 150 parts by weight, particularly about 20 to 70 parts by weight, per 100 parts by weight.

If the amount of the binder is less than this range, the effect of forming a film incorporating the antibacterial deodorant due to the addition of the binder may not be sufficiently obtained. In this case, the antibacterial deodorant may be buried in the coating, and the antibacterial and deodorant effects may be reduced.

As described above, the filter of the present invention utilizes its characteristics to clean air such as an air conditioner, an air purifier, an oil fan heater, a humidifier, a dehumidifier, a vacuum cleaner, and a mask. It can be suitably used as a filter.

[0072]

The present invention will be described below with reference to examples and comparative examples.

Example 1 <Antibacterial deodorant> A solution containing plant polyphenols derived from persimmon juice (manufactured by Sun Mate Science Co., Ltd.) was filtered to remove suspended matters, and then diluted with purified water. A polyethylene glycol having a molecular weight of 400 as a hygroscopic substance in the same amount as the plant polyphenols in the liquid (hereinafter referred to as “P”).
EG400 "), stirred and mixed uniformly to prepare a liquid antibacterial deodorant.

The blending ratio of the plant polyphenols A and the hygroscopic substance B (PEG400) in the above antibacterial deodorant is represented by the weight ratio A / B, where A / B = 1/1 and the concentration of the plant polyphenols. Was 10% by weight. <Filter> 0.1 g of the liquid antibacterial deodorant
After applying to a filter paper of cm × 3 cm, the filter was dried at 60 ° C. for 30 minutes to prepare a filter.

Example 2 Instead of a solution derived from persimmon juice, a concentrated apple juice [trade name "Applephenon 22" manufactured by Nikka Whiskey Co., Ltd.]
% Concentrated liquid "], and a liquid antibacterial deodorant and a filter were prepared in the same manner as in Example 1.

The mixing ratio of the plant polyphenol A and the hygroscopic substance B (PEG400) in the antibacterial deodorant is represented by the weight ratio A / B, where A / B = 1/1 and the concentration of the plant polyphenol. Was 10% by weight.

Comparative Example 1 A solution derived from persimmon juice was diluted with purified water to prepare an aqueous solution containing only plant polyphenols (concentration: 10% by weight), and 0.1 g of the aqueous solution was filtered on filter paper of the same size. After applying, the filter was dried at 60 ° C. for 30 minutes to prepare a filter.

Comparative Example 2 An aqueous solution containing only PEG 400 as a hygroscopic substance (concentration: 10% by weight) was prepared.
g on filter paper of the same dimensions, and then at 60 ° C for 30 minutes.
After drying, a filter was prepared.

Deodorizing Performance Test I The filters prepared in the above Examples and Comparative Examples were individually suspended in a closed container having a capacity of about 5 liters, and acetaldehyde was injected into the closed container. The concentration was measured using a gas detector tube [No. 92 L] and found to be 10 PPM.

Then, 10 minutes after the injection, and 3
After 0 minute, the concentration of acetaldehyde (PPM) in the container was measured using the gas detection tube.

The results are shown together with the results of Comparative Example 1 showing the results when the filter was not hung in the closed container, and the evaluation results when the inside of the closed container was actually smelled after the test of each example. It is shown in FIG.

Measurement of Moisture Content Each of the filters of Examples and Comparative Examples was dried at 60 ° C. for 30 minutes and then allowed to stand at room temperature for 20 minutes in the air, and the water content was measured by the method of Japan Tobacco Inc. Was measured using an infrared moisture meter, and the moisture content was determined from the measurement results.

Table 1 shows the results.

[0084]

[Table 1]

From the table, it was found that the filter of Comparative Example 2 containing no plant polyphenols had no deodorizing effect.

Further, comparing the filters of Examples 1 and 2 containing plant polyphenols and Comparative Example 1, the filters of Examples 1 and 2 having a high water content because of containing PEG 400 which is a hygroscopic substance are more suitable for the above filters. It was confirmed that, compared to the filter of Comparative Example 1 having a low water content because it did not contain PEG400, the filter had an excellent deodorizing effect by removing acetaldehyde.

Example 3 Purified water was added to the same liquid antibacterial deodorant as prepared in Example 1 to reduce the concentration of plant polyphenols to 3% by weight.
It was diluted so that Then, 2 g of the diluted solution was impregnated into filter paper having a diameter of 110 mm, and dried at 100 ° C. for 30 minutes to prepare a filter.

Comparative Example 3 A solution derived from persimmon juice was diluted with purified water to prepare an aqueous solution containing only plant polyphenols (concentration: 3% by weight), and 2 g of this aqueous solution was used in Example 3. The filter paper was impregnated with filter paper having the same dimensions as above and dried at 100 ° C. for 30 minutes to prepare a filter.

Comparative Example 4 An aqueous solution (concentration: 3% by weight) containing only PEG 400 as a hygroscopic substance was prepared.
A filter was prepared by impregnating a filter paper having the same dimensions as that used in Example 3 and then drying at 100 ° C. for 30 minutes.

Deodorizing performance test II The filters prepared in the above Examples and Comparative Examples were
Each of the pieces was individually suspended in a 500-ml Erlenmeyer flask, and the tobacco smoke collected in advance was injected into the Erlenmeyer flask.

Then, 10 minutes after the injection, and 3
After the elapse of 0 minutes, the concentration of acetaldehyde (PPM) in the container was measured using a gas detector tube [No. 9
2].

The results are shown in Table 2 together with the results of Comparative Example 2 showing the results when no filter was hung in the Erlenmeyer flask and the results of the water content of each filter obtained in the same manner as described above.

[0093]

[Table 2]

From the table, it was found that the filter of Comparative Example 4 containing no plant polyphenols had no deodorizing effect.

Further, it was confirmed that the filter of Comparative Example 3 which contained vegetable polyphenols but did not contain PEG 400 which was a hygroscopic substance had a remarkably reduced deodorizing effect by removing acetaldehyde. This is because the filter of Comparative Example 3 has a low water content, so that the effect of decomposing and removing acetaldehyde by the plant polyphenols is insufficient from the beginning, and the adsorption of tar, tar, etc. contained in tobacco smoke. It is probable that the prone components adsorbed earlier than the acetaldehyde and hindered the action of the plant polyphenols.

On the other hand, it was confirmed that the filter of Example 3 containing both the plant polyphenols and PEG 400, which is a hygroscopic substance, was able to remove acetaldehyde well and had an excellent deodorizing effect. This is because the moisture collected by PEG 400, which is a hygroscopic substance, has the effect of decomposing and removing acetaldehyde by plant polyphenols over a long period of time, that is, even after adsorption of components such as tar and tar. It is conceivable that PEG 400 adsorbs components such as tar and tar, and these components hinder the action of plant polyphenols and suppress PEG 400.

Example 4 <Antibacterial deodorant> A solution of plant polyphenols derived from persimmon juice (manufactured by Sun Mate Kagaku Co., Ltd.) was filtered to remove suspended matters, and then diluted with purified water. To the diluent,
PEG 400 as a hygroscopic substance was added, uniformly stirred and mixed, and further concentrated using an evaporator to prepare a liquid antibacterial deodorant.

The blending ratio of the plant polyphenol A and the hygroscopic substance B (PEG400) in the antibacterial deodorant is represented by the weight ratio A / B, where A / B = 1 / 0.5 and the plant polyphenols Was 45% by weight. <Filter> 200 mm x 2
After impregnating a pulp nonwoven fabric of 00 mm x 5 mm, 8
The filter was dried at 0 ° C. for 30 minutes to prepare a filter.

Example 5 A liquid antibacterial deodorant and a filter were prepared in the same manner as in Example 4 except that the mixing ratio of the solution derived from persimmon juice and PEG400 was adjusted.

Mixing ratio A of plant polyphenols A and hygroscopic substance B (PEG400) in the antibacterial deodorant
/ B (weight ratio) was A / B = 1 / 0.2, and the concentration of plant polyphenols was 45% by weight.

Comparative Example 5 A liquid having a plant polyphenol concentration of 45% by weight was prepared using only a solution derived from persimmon juice, and this liquid was applied to a pulp nonwoven fabric having the same dimensions as those used in Example 4. After impregnation, the filter was dried at 80 ° C. for 30 minutes to prepare a filter.

Deodorizing Performance Test III The deodorizing effect of the filters prepared in the above Examples and Comparative Examples was evaluated in accordance with the standard of household air cleaner (JEM1467) specified by the Japan Electrical Manufacturers' Association.

That is, first, the filters produced in the respective Examples and Comparative Examples were respectively set in the filter accommodating portions of the air purifier, and then the air purifier was placed in a sealed container made of an acrylic resin having an internal volume of 1 m ^3. installed.

Next, in this sealed container, five tobaccos (mild seven of Japan Tobacco Inc.) were burned, and the air purifier was operated for 30 minutes.

The concentrations of ammonia, acetaldehyde and acetic acid in the closed container before and after the operation of the air purifier were measured by gas detection tubes [each of which was manufactured by Gastech Co., Ltd .; 3L (for ammonia), No. 3 9
2L (for acetaldehyde), and 81L (for acetic acid)], and the initial concentration C before operation.
₀ (PPM) and the residual concentration C _i (PPM) after the operation, respectively, according to the following equation (1): removal rate (%) = (C ₀ −C _i ) / C ₀ × 100 (1) The removal rate (%) of the component was determined.

The removal rate of ammonia R (NH ₃ ) (%), the removal rate of acetaldehyde R (CH ₃ CHO) (%), and the removal rate of acetic acid R (CH ₃ COOH) determined by the above equation (1). )
From (%), the following equation (2): Initial removal rate (%) = [R (NH ₃ ) + 2 × R (CH ₃ CHO) + R (CH ₃ COOH)] / 4 (2) The specified initial removal rate (%) was determined.

Table 3 shows the above results together with the results of the water content of each filter obtained in the same manner as described above.

[0108]

[Table 3]

As shown in the table, the plant polyphenols are contained.
The filter of Comparative Example 5 containing no PEG400 which is a hygroscopic substance has a particularly small removal rate of acetaldehyde, whereas the removal rate of the acetaldehyde is improved as the amount of PEG400 increases in the order of Examples 5 and 4. It was confirmed that.

Example 6 <Antibacterial deodorant> A liquid antibacterial deodorant was added to an alcohol extract of grapefruit seeds by adding PEG400 as a hygroscopic substance in the same amount as the plant polyphenols in the extract. Was prepared. <Filter> A 50 mm × 50
The filter was impregnated with filter paper having a thickness of 110 mm and dried at 110 ° C. for 2 hours to prepare a filter.

From the weight (g) of the filter paper before impregnation with the antibacterial deodorant, the weight (g) after impregnation with the antibacterial deodorant and drying, and the area (m ² ) of the filter paper, Formula (3): Fixing amount (g / m ² ) = 0.5 × [(weight before impregnation) − (weight after drying)] / (area of filter paper) The amount of fixation per unit area was 0.24 g / m ² .

Example 7 A filter was produced in the same manner as in Example 6, except that the amount of impregnation of the same liquid antibacterial deodorant as that produced in Example 6 with filter paper having the same dimensions as above was increased. .

The fixing amount of the plant polyphenols per unit area determined by the formula (3) is 0.60 g / m 2.
^{Was 2} .

Example 8 The procedure of Example 8 was repeated, except that a concentrated apple juice (trade name "Applephenone 22% concentrate" manufactured by Nikka Whiskey Co., Ltd.) was used in place of the alcohol extract of grapefruit seeds. A filter was manufactured in the same manner as in No. 6.

The fixed amount of plant polyphenols per unit area determined by the formula (3) is 2.12 g / m 2.
^{Was 2} .

Example 9 A filter was prepared in the same manner as in Example 6, except that an aqueous solution of catechin extracted from tea was used in place of the alcohol extract of grapefruit seeds.

The fixing amount of the plant polyphenols per unit area determined by the formula (3) is 2.24 g / m 2.
^{Was 2} .

Antibacterial Test I The filter of each of the above Examples was set as a sample on a petri dish, and a filter paper of 15 mm square was placed thereon, and 0.1 ml of the following test bacterial solution was dropped thereon, followed by 24 hours at 37 ° C. And cultured.

The test bacterium NB liquid medium was diluted 500 times with physiological saline.
Escherichia coli K12 (Escherichia coli, IFO 3301) was inoculated to prepare a bacterial solution having a bacterial count of about 10 ⁵ / ml.

Next, after performing an extraction treatment with a vibrator using 10 ml of SCDLP liquid medium,
0.2 ml of the bacterial solution diluted so that it can be counted was dropped on SCD agar medium, spread with a conical rod, cultured at 30 ° C. for 24 hours, the number of colonies was counted, and the number of colonies per 1 ml of the test bacterial solution was counted. It was converted to a number. The initial number of bacteria was 1.9 × 10 ⁵ .

For comparison, only untreated filter paper
The same measurement was performed on the sample dried at 0 ° C. for 2 hours (Comparative Example 6).

Table 4 shows the results.

[0123]

[Table 4]

From the table, it was confirmed that as a plant polyphenol, the antibacterial effect increased in the order of tea catechin <apple <grapefruit, and that grapefruit had a high antibacterial effect with a small amount of adhesion of 1 g / m ² or less. .

[0125]

As described in detail above, according to the present invention,
Without deteriorating the antibacterial and deodorizing effects of plant polyphenols, they can be fully demonstrated over a long period of time,
In addition, the present invention has a unique effect of being able to provide a safe and human-friendly new antibacterial deodorant and an air cleaning filter using the same.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C058 AA12 AA19 BB07 CC08 JJ03 JJ08 JJ21 JJ24 4C080 AA03 BB02 BB05 CC02 CC09 CC12 HH09 JJ05 KK08 LL08 LL10 MM12 MM31 NN06 NN15 NN22 NN23 NN24 NN24 BC DC10 DG03 DH10

Claims (5)

[Claims] An antibacterial deodorant comprising a plant polyphenol and a hygroscopic substance. 2. The antibacterial deodorant according to claim 1, wherein the plant polyphenols are components extracted from fruits. 3. The antibacterial according to claim 1, wherein the hygroscopic substance contains at least one selected from polyhydric alcohols, polyethers, saccharides, polysaccharides, celluloses, acrylic compounds, and silicic acid compounds. Deodorants. 4. A filter, wherein the antibacterial deodorant according to claim 1 is carried on a substrate having air permeability. 5. The filter according to claim 4, wherein the air-permeable base material is a nonwoven fabric.