JP2000154103A - Control of mite - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily, quickly and effectively controlling mites living within bedclothes, mattresses and carpets by subjecting the habitat of the mites to low pressures and introducing an oily aromatic substance into the habitat. SOLUTION: This method for controlling mites comprises: subjecting the habitat of the mites to low pressures of pref. about 100 to 500 mmHg by pref. putting the articles where the mites live into a case e.g. bag for receiving bedclothes and mattresses and then suctioning the air in the case via a vacuum cleaner; and introducing an oily aromatic substance e.g. lemongrass oil or benzyl alcohol into the case. The usage of the oily aromatic substance is pref. 10 to 50,000 ppm as an active ingredient based on the articles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for controlling mites.

[0002]

2. Description of the Related Art Indoor dust mites that live in the home are:
It is known that it inhabits and breeds in humid places such as the surface and inside of tatami mats, carpets, futons and sofas. Among these, Dermatophagoides, such as Dermatophagoides pteronyssinus and Dermatophagoides farinae, are thought to cause bronchial asthma, allergic rhinitis, atopic dermatitis and the like, and have been regarded as a problem in recent years.

[0003] As a method of removing mites that inhabit humid places such as the surface and the inside of tatami, carpets, futons, sofas and the like, the surface can be cleaned with a vacuum cleaner, a medicine can be injected into the inside, It is common practice to dry tatami mats and futons in the sun. However, the method of cleaning the surface with a vacuum cleaner cannot eliminate mites living inside the article, and it is difficult to sufficiently infiltrate the inside of the article by the method of injecting the medicine into the inside. In addition, when sun-dried, the humidity inside the article can be reduced, but there is a problem that the mite control effect is weak. For this reason,
There is a demand for a simple and effective method for exterminating mites into the interior of an article.

[0004] In recent years, an acaricide using a terpene compound obtained by extracting from a plant has been proposed (JP-A-63-104905). It is preferable from the viewpoint of safety for the human body to remove mites using such a natural product extract as an active ingredient, but it is difficult to permeate the active ingredient inside the futon with this active ingredient alone.

[0005]

DISCLOSURE OF THE INVENTION In view of the above problems, an object of the present invention is to provide a method for exterminating mites easily and quickly using an oily aromatic substance as an active ingredient.

[0006]

According to a first aspect of the present invention, there is provided a method for controlling ticks according to the present invention, wherein an environment of an article where a tick inhabits is brought into a low pressure state, and an oily aromatic substance is introduced into the low pressure environment. I do.

[0007] According to a second aspect of the present invention, there is provided a method of controlling mites according to the first aspect, wherein the means for reducing the pressure includes storing an article in a container such as a futon storing bag and using a vacuum cleaner. It is characterized in that the air in the container is sucked out.

The present inventors have studied as a simple method of exterminating ticks by focusing on placing ticks in a low pressure state.
Eradication was not effective even after leaving for 8 hours. Therefore, while keeping the mite-inhabiting products at low pressure and taking advantage of the oily aromatic substance's high volatility, when it is used as an active ingredient, it easily penetrates into the interior of futons and eliminates mites. Effective and safe for the human body.

[0009] The oily aromatic substance in the present invention preferably contains at least one or more extracts and / or extract components of natural products described below. Extracts and extract components of natural products are known substances having acaricidal activity.

Examples of natural product extracts include peppermint oil, cassia oil, almond bitter oil, column oil, peppermint oil, spearmint oil, cinnamon oil, allspice oil, clove oil, thyme oil, rosemary oil, and lemongrass. Oil, lemon oil, yuzu oil, lime oil, apple aroma oil, grapefruit oil, sweet orange oil, navel oil, sweetie oil, Valencia orange oil, mandarin oil, bergamot oil, laurel oil, star anise oil, sweet fennel oil, marjoram Oil, mace oil, boad rose oil, palmarosa oil, lemon verbena oil, lemon balm oil, lavender oil, rose oil, eucalyptus oil, tea tree oil,
Ylang-Ylang oil, Vetiver oil, Patioli oil, Kananga oil, Cageput oil, Citronella oil, Nutmeg oil, Pepper oil, Sandalwood oil, Bulk oil, Cargin oil, Ginger oil, Campo oil, Cubebebu oil, Corn mint oil, Anise oil , Lang oil, Cinnamon oil, Mace oil, Paloma Rosa oil, Fennel oil, Times oil, Neem oil,
Natural essential oils such as laurel oil, laurel oil, and T-shaped oil are included.

[0011] Extract components purified as a single component from these natural essential oils include, for example, menthol, menthol, limonene (T), limonene (S), citral, citronellol, geraniol, cinnamaldehyde, eugenol, Anethole, α-pinene, β-
Pinene, D-limonene, benzyl alcohol, phenylethyl alcohol and the like. Note that the extract component in the present invention includes a structurally identical compound synthesized by chemical synthesis.

In the present invention, the use of an oily aromatic substance containing at least 20% of a total of one or more components of D-limonene, menthone, cinnamaldehyde, citral, benzyl alcohol and phenyl alcohol, further enhances the mite control effect. It is particularly preferable because it becomes excellent.

The above 20% means that the oily aromatic substance is volatilized at room temperature and normal pressure so as to be saturated in a certain volume, and the volatile component is collected by a solid phase microextraction method, and a non-polar column is used. With respect to the peak height of all components when analyzed by gas chromatography, D-limonene, menthone, cinnamaldehyde, citral,
It means that the sum of the peak heights of the benzyl alcohol and phenyl alcohol components is 20% or more. Since these oily aromatic substances have a particularly strong mite control action, they can be suitably used.

In the present invention, the environment of an article where mites inhabit is set in a low pressure state. When an acaricidal active ingredient such as an oily aromatic substance is introduced into a low-pressure environment, the pressure increases from low pressure to normal pressure. As the pressure increases, the oily aromatic substance penetrates into the interior of the article and exerts an acaricidal action.

The low pressure state referred to in the present invention is approximately 10
５００500 mmHg. It is not preferable to make the pressure lower than about 10 mmHg because expensive equipment is often required. When the pressure is higher than 500 mmHg, it is difficult to quickly penetrate the inside of the article with the active ingredient.

The method for realizing the low pressure state is not particularly limited, but an example of a simple method is a method of removing air by sucking air from a container such as a futon compression storage bag with a household vacuum cleaner. . If articles such as futons, underwear, carpets and the like to be removed from mites are put in a container in advance, the articles can be quickly and easily brought into a low pressure state.

A specific example of a method of causing an oily aromatic substance having an acaricidal action to act on the above-mentioned low-pressure article is as follows. The oily aromatic substance is volatilized in advance in an appropriate amount of air, and the article is contained inside. And a method in which the volatile component is introduced into a low-pressure container in which the oil is contained, or a method in which the oily aromatic substance is formed into a spray form such as a spray and the sprayed vapor is introduced into the low-pressure container.

When the oily aromatic substance is used in the form of a propellant such as a spray, the propellant is not particularly limited, and examples thereof include dimethyl ether, chlorofluorocarbon, and carbon dioxide. Also, compressed air can be used.

If necessary, surfactants such as dispersants and penetrants, stabilizers and the like which are usually added may be added to the above-mentioned preparations. Further, the oily aromatic substance can be diluted with an appropriate solvent as required.

The amount of the oily aromatic substance used differs depending on the type of the substance, and the effect on mites needs to be adjusted as appropriate.
50,000 ppm is preferred.

[0021]

Embodiments of the present invention will be described below. Test mite bags, test futons, and futons placed in a low pressure state were prepared by the following methods. -Preparation of test mite bag A glass microfiber filter paper having a diameter of 70 mm is folded in two, two side portions are clipped to form a bag, and thirty female adult mites (Dermatophagoides pteronyssinus) are introduced from the opening, The opening was closed with a clip to obtain a test mite bag.・ Preparation of a test futon A test futon is set by setting a test mite bag in the center of the futon that has been folded into three, and then put in a commercially available futon compression bag, and the inside air is suctioned by a household vacuum cleaner. It was in a low pressure state.

(Example 1) 4 ml of lemongrass oil (natural product extract) as an active ingredient was placed in a hand spray tank, and a regulator and a cylinder containing 40 liters of compressed air were connected to the hand spray. On this occasion,
The injection pressure is set to 5 kg / cm ² by the regulator,
The spray pattern was adjusted so that the lemongrass oil could be sprayed in a fine mist. This was used as an acaricide.

Acaricidal test A hand spray part of an acaricide was set in a low-pressure futon compression bag containing the above-mentioned test futon, and lemongrass oil was sprayed into the futon compression bag with compressed air, and 3
Left for hours. Thereafter, the test mite bags were taken out, the number of dead mites (X ₀ ) and the number of live mites (X ₁ ) were counted, and the mite mortality (miticidal rate) Y was calculated from the following equation. Y (%) = {X ₀ / (X ₀ + X ₁ )} × 100

Example 2 An acaricide was prepared in the same manner as in Example 1 except that 3 ml of benzyl alcohol was used instead of lemongrass oil as an active ingredient. The test was performed.

Comparative Example 1 A miticide test was conducted in the same manner as in Example 1 except that only compressed air containing no active ingredient was injected.

The acaricidal tests of Examples 1 and 2 and Comparative Example 1 were performed three times each, and the average value of each was shown in Table 1 as the average acaricidal rate.

[0027]

[Table 1]

[0028]

According to the present invention, mites inhabiting futons and carpets, for which there has been no effective control method so far, can be easily and effectively controlled using an active ingredient safe for the human body. be able to.

Claims (2)

[Claims] 1. A method for controlling ticks, which comprises setting the environment of an article where mites inhabit to a low pressure state and introducing an oily aromatic substance into the low pressure environment. 2. The method according to claim 1, wherein the means for setting the low pressure state includes storing the article in a container such as a futon storage bag and sucking out the air in the container using a vacuum cleaner.