JPH05201822A - Antimicrobial composition - Google Patents

Abstract

PURPOSE:To obtain an antimicrobial composition showing excellent antimicrobial action on bacteria and fungi, having deodorizing effects, containing allyl isothiocyanate and essence of green tea. CONSTITUTION:Allyl isothiocyanate which has excellent fungicidal and mildewproofing action but has difficult handling because of an oily liquid having a specific irritating smell is blended with (B) essence of green tea which has deodorizing action and fungicidal action but generates microorganisms with lapse of time because of weak germicidal action and removes deodorizing effects is ratio of the component A:B=5:1 to 1:1, preferably 3:1 to 2:1 to eliminate drawbacks of each individual component. The composition is used in spray agent or in the form of being impregnated into a liquid absorbing substrate and is effective for sterilization and prevention of mildew for places liable to multiplication of microorganisms, plastic buckets for household waste, shoe cupboard, under sinks of kitchen, toilet seat, wall tile for bathroom, etc., liable to occurrence to smell and mold caused by bacteria.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel antimicrobial composition comprising allyl isothiocyanate (hereinafter referred to as AIT) and green tea extract as active ingredients, and more preferably a novel antimicrobial composition comprising an organic solvent. It relates to a composition.

[0002]

2. Description of the Related Art Conventionally, AIT which is a component of wasabi
Is known to have an excellent bactericidal and antifungal action. However, because AIT is an oily liquid with a unique irritating odor, it is difficult to handle, and because of its high volatility, it is used as an active ingredient, and a sterilizing and mildewproofing agent that can be easily used is selected. Further improvements are needed to provide it.

[0003] On the other hand, it has been proposed that green tea is made into a deodorant / deodorant by formulating the dry-distilled product itself obtained by dry-distilling it by adding an appropriate formulation auxiliary agent. Green tea extract, which is a distilling component obtained by subjecting green tea to means such as dry distillation and distillation, includes catechin, epicatechin, gallocatechin, epigallocatechin, catechin gallate, epicatechin gallate, and epigallocatechin gallate. It contains catechins and gallic acid esters thereof, and is known to have a bactericidal action as well as the above deodorizing and deodorizing actions. However,
The bactericidal action of the green tea extract is not remarkable, for example, it is not strong enough to exert a mildew-proofing effect and is slightly inferior in sustainability. Therefore, when the extract is used as a liquid deodorant / deodorant dissolved in water, a solvent, etc., microorganisms such as Escherichia coli and mold are generated over time, and the deodorant and deodorant effects are impaired. There are drawbacks.

[0004]

In view of the above-mentioned circumstances, the present invention provides an antimicrobial composition that eliminates the drawbacks of the conventional preparations of AIT or green tea extract alone, and various preparations using the same. The task is to do.

[0005]

[Means for Solving the Problems] The inventors of the present invention have made various studies to solve the above-mentioned problems.
It has been found that the composition containing T and green tea extract has a strong or synergistic antimicrobial effect. It was also found that the composition has a deodorizing effect on various odors. Furthermore, it was found that the unique irritating odor of AIT was alleviated in the composition.

The present invention has been completed based on the above new findings, and is an antimicrobial composition comprising AIT and green tea extract.

[0007] The AIT as used herein does not refer to a natural product or a synthetic product, and further, allyl isothiocyanate 10
Not only a single agent consisting of 0%, but also an essential oil containing this, for example, an extract from horseradish or mustard or a crudely purified product may be used.

The green tea extract is water (particularly hot water) of green tea or an organic solvent extract, and examples of the organic solvent include lower alcohols such as ethanol and lower esters such as ethyl acetate.

The mixing ratio of AIT and green tea extract is usually 5: 1 to 1: 1 and preferably 2: 1 to 3: 1.

An organic solvent is preferably added to the antimicrobial composition of the present invention. As the organic solvent, those capable of dissolving AIT and green tea extract and having no or very little influence on the skin due to contact are preferable.
Monohydric alcohols such as methanol, ethanol, propanol, isopropyl alcohol, butanol, octyl alcohol, oleyl alcohol, ethylene glycol, propylene glycol, polyethylene glycol,
A polyhydric alcohol such as glycerin can be used.

Of these, the preferred organic solvent used in the present invention is ethanol. The use of ethanol is particularly preferable because it has strong antibacterial and antifungal properties by itself.

The antimicrobial composition of the present invention is used as an optional embodiment. Specific examples thereof include those in which a spray agent or a liquid-absorbent support is impregnated. When used as a spray agent, AIT is 0.1 to 1% by weight based on the organic solvent, and green tea extract is 0.05 to 0.5.
An example in which it is dissolved by weight% is exemplified. If it is less than this, the amount of active ingredient is too small to exert the antimicrobial effect effectively,
When it exceeds, the irritating odor of AIT increases and the viscosity of the base material increases, so atomization does not occur easily.

If necessary, an auxiliary component such as a surfactant, a polymer substance, a viscosity modifier, an antioxidant, and fine powdery adsorbent particles may be added to the spray for the antimicrobial composition of the present invention. be able to.

The spray agent relating to the antimicrobial composition of the present invention is used by putting it in a suitable spray device and ejecting droplet particles from its nozzle. The preferred spray device used in the present invention is an aerosol type using a propellant. Aerosol type is, for example, A
IT, green tea extract, or other organic solvent solution in which additives are dissolved if necessary, is placed in a closed container equipped with a spray nozzle, and a propellant or a compressed gas such as nitrogen or carbon dioxide gas is further enclosed to It can be obtained by mounting. Known propellants, propane, n-
Butane, isobutane, n-pentane, isopentane or mixtures thereof are used.

In an embodiment in which a liquid-absorbent support is impregnated with the antimicrobial composition of the present invention, AIT is 0.1 to 2% by weight based on the organic solvent, and green tea extract is 0.05 to.
An example is one in which 1% by weight is compounded, 20 to 30% by weight of water, a surfactant (sorbitan fatty acid ester such as sorbitan monolaurate), and aluminum sulfate are added to impregnate the support.

As the liquid-absorbent support, for example, paper, woven fabric,
Nonwoven fabrics, foams and the like are exemplified. Its material is cellulose, plastic fiber, sponge, plastic foam.
Examples thereof include polyurethane foam and the like.

The composition of the present invention is impregnated into a liquid-absorbent support at a weight ratio of about 1: 1 to 5: 1. As the impregnation method, the body is cut into individual cut pieces or continuous strips,
It is performed by a liquid bath saturation method in which the composition is immersed in a storage tank.

The support impregnated with the composition as described above is
Polypropylene closed container or aluminum vapor-deposited P
Store in a closed pack made of ET.

[0019]

The composition for antimicrobial of the present invention is, for example, a bacterium (for example, Escherichia coli, Staphylococcus aureus), a fungus (for example, Aspergillus niger, Penicillium citrinum).
Against this, it shows a remarkable antimicrobial effect and also has a deodorizing effect. Furthermore, in the composition of the present invention, the pungent odor peculiar to AIT is sufficiently reduced. Therefore, the composition of the present invention is used for household wastes where microorganisms are easily proliferated, and odors and molds caused by bacteria are easily generated in a mode in which the composition is impregnated with a spray agent or a liquid-absorbent support. It is effective for sterilization and mildew-proofing of plastic buckets, shoe boxes, kitchen sinks, toilet seats, bathroom wall tiles, etc. In addition, it also has a deodorizing effect, which is useful for sanitizing the living environment.

[0020]

EXAMPLES Examples will be given to explain the present invention in more detail, but the present invention is not limited thereto.

Reference Example 1 130 g of crude green tea extract obtained by extracting and concentrating 100 g of dried green tea leaves with 1 L of hot water was added with 0.1 L of ethyl acetate.
5 times, the ethyl acetate layer was separated and evaporated under reduced pressure to a solvent to obtain 10 g of a tea polyphenol compound.

Example 1 Allyl isothiocyanate to ethanol, Reference Example 1
The solution obtained by dissolving each of the green tea extracts obtained in 1) at a ratio of 1% by weight was placed in a commercially available aluminum container for an aerosol and filled with compressed nitrogen gas to obtain the spray agent of the present invention.

Example 2 Ingredient% by Weight AIT 1 Green Tea Extract 1 Ethanol 70 Water Approximately 25 Surfactant (Sorbitan Monolaurate) 2 Aluminum Sulfate 0.1 A composition having the above composition ratio was subjected to a liquid bath saturation treatment method to obtain a nonwoven fabric. On the other hand, the composition was impregnated with a weight ratio of 3: 1 to obtain a support impregnated with the composition of the present invention (wet rag).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akiko Numata 1-47 Chuo-ku 1-chome, Joto-ku, Osaka-shi, Osaka Midori Cross Castle East Branch Room (72) Inventor Taiji Sekiyama 1-chome, Chuo-ku, Osaka-shi, Osaka No. 1-47 Midori Cross Castle East Branch Office

Claims (4)

[Claims] 1. An antimicrobial composition comprising allyl isothiocyanate and green tea extract. 2. The antimicrobial composition according to claim 1, which comprises an organic solvent. 3. The antimicrobial composition according to claim 1, which is in the form of a spray. 4. The antimicrobial composition according to claim 1, which is an embodiment obtained by impregnating a liquid-absorbent support.