KR20120021466A - Insect repellent having wood vineger as an active ingredient - Google Patents

Abstract

PURPOSE: A pest repellent containing pyroligneous liquor and plant essential oil is provided to ensure pesticidal effect against pest, especially mosquito, without environmental pollution. CONSTITUTION: A pest repellent contains pyroligneous liquor as an active ingredient. The pyroligneous liquor is prepared by liquefying smoke during burning timbers. The pest repellent further contains essential oil isolated by steam distillation. The plant essential oil is prepared from foeniculi Fructus, lavender leaf, mandarine, citrus terpene, or eucalyptus Bergamot. The essential oil is contained I 5-10 weight parts based on 100 weight parts of pyroligneous liquor.

Description

Pest repellent using wood vinegar as an active ingredient {INSECT REPELLENT HAVING WOOD VINEGER AS AN ACTIVE INGREDIENT}

The present invention relates to a pest repellent containing wood vinegar as an active ingredient and containing an essential oil component extracted from a plant, and more particularly, to a pest repellent comprising an purified vinegar extract as an active ingredient and an essential oil component extracted from a plant, and It's about how to fight mosquitoes.

Mosquitoes are a taxonomic term generic to insects belonging to the genus Mosquitoes in the genus Longfly. There are about 2,700 species known in 34 genera and 120 children worldwide (Hygiene and Entomology, pp. 163-242, Torture History, by Han-il Lee, 1999). In Korea, 52 species of 9 genera are known. Among them, the Chinese spotted mosquito (Anopheles sinensis) mediates malaria and inland Brgia fever, and the Togo forest mosquito (Aedes togoi) mediates filamentous fever in the southern coastal islands. In addition, the small red cluster (Culex triaenior hynchu s) spreads Japanese encephalitis, and the red cluster (Culex pipiens pallens) and the underground cluster (Culex pipiens molestus) belonging to the cluster have recently become a blood-sucking problem in apartments. Control is inevitable. As such, mosquitoes are attracting attention as one of the most important hygiene insects because they mediate infectious diseases that threaten human health, such as malaria, yellow fever, dengue fever, Japanese encephalitis and filamentous worms.

Most mosquito-borne outbreaks can lead to high incidence and mortality, so DEET (N, N-diethyl-m -toluamide), a commercially available organic synthetic repellent, was developed in 1954. Widely used synthetic repellents (McCabe, ET, Barthel, WF, Gertler, SI, and Halls, SA, 1954. Insect repellents, III.N, n-diethylamides. Journal of Organic Chemistry. 19: 493-498), USA 30% of all citizens in the country use DEET, and more than 30 million are consumed each year (as of 1994).

DEET is not only effective for many mosquito species, but is also used throughout pests such as mosquitoes, flies, teeth, fleas, ticks, and also to protect livestock. Although DEET has been used to this day because of its excellent repellency against mosquitoes, it has a problem of causing side effects such as unpleasant odor and high toxicity and high skin penetration. Therefore, in order to reduce the damage of chemical pesticides, development of environmentally friendly drugs that selectively act only on pests, such as new control methods or alternatives that can effectively protect humans from mosquitoes while minimizing the impact on humans and ecosystems Development of drugs was required (Geroghiou and Saito, 1983; National Research Council, 1986; Brown, 1078). Representative examples of plant-derived insecticides are commercialized chrysanthemum flowers, natural pyrethrin extracted from plants, and nicotine extracted from tobacco, and many other biopesticides have been developed, but their activities are weak compared to synthetic insecticides. There are not many of them.

Wood vinegar generally refers to those obtained in the manufacture of charcoal, such as black coal and white charcoal, and ordinary purified wood vinegar obtained by distilling sawdust, waste wood, bark, chaff, and the like. In addition, the liquid obtained without undergoing refining process by cooling the smoke (combustion temperature of 80 ° C. to 150 ° C. in the case of conventional charcoal and 150 ° C. or less in the case of mechanical charcoal) generated by carbonization of wood is crude wood vinegar. ), The crude wood vinegar is allowed to stand for at least 2 to 3 days, separated into two layers or three layers, and the red brown aqueous solution of the middle layer is aged for three months or more when separated into two layers. Clear and clear reddish brown obtained by removing unstable components from wood vinegar by filtering or distillation by filtering the liquid or crude wood vinegar with a filter or by distillation such as adsorption and filtration after ageing In addition, light brown and light yellow water-soluble liquids are referred to as refined wood vinegar (see Article 6 of Forestry Research Bulletin 1999-35).

Wood vinegar is not a disinfectant itself, but contains natural organic acids such as acetic acid, propionic acid, lactic acid, and formic acid, and carbonyl compounds such as formaldehyde, glyoxal, and acetone. It is known to have bactericidal and insecticidal effects. However, the conventional wood vinegar was used as a pesticide to remove ticks, etc., but was not used to remove pests around people due to its unique smell.

Plant-derived natural products called phytoncide, on the other hand, are generic names of bactericidal substances produced by plants to defend themselves from pests and microorganisms. These plant-derived natural products not only show excellent insecticidal effects with a small amount of use, but are easily biodegradable and low. Has a low risk for mammalian toxicity and the environment. Due to the advantages of these natural products, research is being actively conducted to use natural products as a substitute for controlling insects. In particular, natural essential oils derived from plants have traditionally been used as a means of controlling pests and controlling pests at home. Recently, they are also used as cosmetics, and aromatherapy is used in oriental medicine. It is also used to treat diseases.

The main components of phytoncide are terpene-type compounds, which have a unique directionality and are known to be the most important contributors to various forest bath effects such as cardiopulmonary function, vascular function, respiratory reinforcement and skin disinfection. Terpene is a hydrocarbon formed by combining a large number of isoprene (C5H8). There are 2, 3, or 4 isoprene monoterpenes, sesquiterpenes, diterpenes, and plants generally have photosynthesis of solar energy. 0.01-5% of terpene is synthesize | combined. Terpenes are generally obtained in the form of essential oils by steam distillation, compression or extraction. The amount of phytoncide released and its components vary from tree to tree, and conifers are known to emit more than twice as much phytoncide than hardwoods.

Phytoncide is effective in reducing stress, antibacterial, deodorizing and neutralizing harmful substances, sedating and comfort effects, improving allergies and skin diseases, and increasing immune function. Above all, its utilization is expected.

Thus, efforts to apply the effect of phytoncide to human life have been continued, but this has been mainly limited to fields such as air purifiers and volatilizers [Utility Model Registration Nos. 280014, 289673, 265617, 216086]. , Patent Nos. 383911, 375889.

Some inventions exist as follows for plant essential oils and compounds having insecticidal properties. Korean Patent Laid-Open Publication No. 2003-0033722 (plant essential oils and compounds having insecticidal properties) includes Salvia Officinalis, Pogostemon Patchuli, Citrus Aurantiroli, Citrus Paradish, Salvia Scleria, Origari. Although it relates to an insecticidal composition comprising essential oils extracted from at least one plant selected from the group consisting of Bulgari, citrus retigulata, and the like, the present invention can be used to see the insecticidal effect by using a large number of insecticidal compositions. Insecticides vary by the type of composition

There was a problem with large, low insecticide.

Korean Patent Application Laid-Open No. 2001-0061271 (a low-pest pesticide of essential oils extracted from plants) includes menta, euchariftus, lavenda, rosemary, team oil and its main ingredients, menton, benzaldehyde and alpha-pinene, linarul, tuzon, Disclosed is a low-pest insecticide composition comprising a monoterpene selected from among cineol, para-cymene and eugenol. However, the present invention can be seen that the use of low-molecular insect pesticides 30 μl / ℓ to 150 μl / ℓ, the fumigation effect appeared, there was a problem in producing a large amount of fumigant in a large amount of herbs and medicinal plants.

The present invention, in order to solve the problems of the prior art as described above, by mixing the wood vinegar and plant essential oil in an appropriate ratio, harmless to the human body and exhibits high repellent activity against mosquitoes and other pests even with a small amount of use It is an object to provide pest repellents, in particular mosquito repellents.

The present invention provides a pest repellent containing wood vinegar as an active ingredient in order to achieve the above object.

In the present invention, the wood vinegar provides a pest repellent, which is purified wood vinegar separated from the uppermost layer by liquefying the smoke generated when burning wood.

In the present invention, the pest repellent further comprises a plant essential oil (essential oil), the plant essential oil is at least one selected from fennel, lavender leaves, mandarin, citrus terpine, Eucalyptus bergamia (Citrus bergamia), Extracted by the steam steaming method, and provides a pest repellent, characterized in that contained in 5 to 10 parts by weight based on 100 parts by weight of the wood vinegar. If the plant essential oil is contained in less than 5 parts by weight based on 100 parts by weight of the wood vinegar liquor may be difficult to use due to difficult to remove the peculiar smell of the wood vinegar, when included more than 10 parts by weight dilute the insecticidal effect of the wood vinegar because the plant essential oil It is preferable that 5 to 10 parts by weight based on 100 parts by weight of the wood vinegar solution.

In addition to the above components, the pest repellent composition using the wood vinegar of the present invention as an active ingredient may further include other additives such as antiseptics or anti-freezing agents within the scope of not impairing the object of the present invention.

The repellent of the present invention is preferably used for pests. The pests are insects that directly or indirectly harm humans, such as blood-sucking insects, parasitic insects, pathogen propagation insects, glial insects, venotoxic insects, and unpleasant insects. Blood-sucking insects include mosquitoes, back mosquitoes, teeth and bedbugs. Parasitic insects include fleas and teeth. Pathogen propagation insects include flies, mosquitoes, wheels, and teeth. ), Bee, sting bug, etc., poisonous insects include blue-winged wings, sky cattle paste, and rosacea, and unpleasant insects include midget, worms and stink bugs. In addition, it may include arthropods such as mites, spiders, centipedes, and scorpions other than taxonomic species. The most preferred pest of the present invention is a mosquito.

The pest repellent may further include a material mixed with a conventional pesticide, wherein the additive is preferably included in 1 to 5 parts by weight, more preferably adjusted according to the pesticide formulation, spraying site, spraying method. . In addition, pest repellents are used for the purpose of insecticide against various pests, and can be applied by contact, fumigation, or digestive poisoning, and the formulations are prepared in aerosol, spray, smoke, capsule, granule, and gel forms. Can be.

The pest repellent of the present invention exhibits an excellent insecticidal effect against pests, especially mosquitoes, by mixing the herbicide solution and plant essential oils, which are known to have a bactericidal activity, but both natural herbaceous fluid and plant essential oils are natural extracts for environmental pollution or humans. There is no adverse effect on this.

Hereinafter, the present invention will be described in detail with reference to Examples. However, embodiments according to the present invention can be modified in many different forms, the scope of the present invention should not be construed as limited to the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

Example 1 Preparation of Purified Wood Vinegar

Cut the oak to a certain size, put the cut oak in the kiln, and bake the inside temperature of the kiln at 800 ~ 1300 ℃ for about 7 days. In this process, the smoke containing the liquid component discharged through the kiln's exhaust study (2) is condensed into the liquid component due to the difference between the internal temperature and the room temperature of the kiln, and this component is collected. If the liquid collected by the collection process is left to stand in June or a year and matured, the liquid is divided according to its specific gravity. At this time, in the present invention, the liquid separated in the uppermost layer is used.

Example 2 Preparation of Plant Essential Oils

1 fennel, lavender leaf, mandarin, citrus terffin, orange leaf After cutting into 2 cm size or crushing in a mixer, put each 100g into a 2-liter round flask, add 1 liter of distilled water, connect to an oil refining device and heat it at 100 ℃. Plant essential oils were extracted by steam distillation for 5 hours.

Example 3 Preparation of Pest Repellents

The pest repellent of the present invention was prepared by mixing 10 parts by weight of the plant essential oil obtained in Example 2 with 100 parts by weight of the purified wood vinegar solution obtained in Example 1.

Experimental example. Insecticidal test for mosquitoes

The pesticide assay test for mosquitoes was performed about the essential oil obtained in Example 1. Insecticidal test for adult insects in mosquitoes is a pest that moisturizes the adult mosquitoes in an acrylic box of 50 × 50 × 50 cm and naturally evaporates the prepared insect repellent agent at room temperature (29 ± 2 ° C.) as an active ingredient. The insecticidal effect of repellent on mosquitoes was verified.

In order to compare insecticidal properties, a commercially available fumigation liquid mosquito repellent (trade name: 쫑 Liquid; main ingredient: di, di-cis / trans praletrin; 1.33%; manufacturer: Chong Kun Dang) was used. The mosquitoes used for the assay were collected from sewers and parks using Culex sp.

Experimental Example 1. Insecticidal effect by natural evaporation

To verify its effectiveness as a mosquito repellent, 30 mosquitoes were spun into an acrylic box of 50 × 50 × 50 cm, and 1 ml of plant essential oil was dispensed into an aluminum dish of 7 cm in diameter and evaporated at room temperature. The mosquito insecticidal effect was observed as in Table 1. At this time, the evaporation amount of the pest repellent composition of the present invention after about 10 hours was about 0.52 g, and commercially available liquid mosquitoes hardly evaporated.

Comparative Example 1
Comparative Example 1 Comparative Example 2 Example Live mosquito Stunned Mosquito Dead mosquito Live mosquito Stunned Mosquito Dead mosquito live
there is
mosquito faint
Han Mo
group dead
mosquito Live mosquito Stunned Mosquito Dead mosquito 0 min 30 0 0 30 0 0 30 0 0 30 0 0 2 mins 30 0 0 30 0 0 30 0 0 24 5 One 4 mins 28 2 0 30 0 0 29 One 0 12 4 14 6 mins 27 3 0 29 One 0 28 One One 5 4 21 8 mins 27 3 0 27 3 0 24 3 3 0 7 23 10 minutes 27 3 0 25 3 2 20 4 6 0 5 25

Insecticidal Effect on Plant Mosquitoes by Natural Evaporation

Comparative Example 1 1 ml of distilled water was dispensed into an aluminum dish in place of the pest repellent composition of the present invention.

Comparative Example 1-A commercial liquid mosquito flavor was dispensed into an aluminum dish with 1 ml.

Comparative Example 2-100 ml of wood vinegar was mixed with 30 parts by weight of plant essential oil and dispensed into 1 ml of aluminum dish.

Live Mosquito-Mosquito number to fly inside the acrylic box.

Stunned Mosquito-The number of mosquitoes that only move their legs when they are motivated by mosquitoes that are turned upside down on the bottom of the acrylic box.

As shown in Table 1, the control experiment using distilled water, the experiment using the fumigation liquid mosquito, and the experiment of mixing 30 parts by weight of plant essential oil with 100 parts by weight of wood vinegar showed little mosquito insecticidal effect, but the pest repellent composition of the present invention In the experiments used, as time went by, mosquitoes began to show unstable movements, such as rushing inside the acrylic box, increasing the number of mosquitoes and dead mosquitoes.

After 5 hours, the experiment using the pest repellent composition of the present invention showed 100% insecticide. Mosquitoes stunned at the bottom of the acrylic box lost their function as mosquitoes because their legs were removed from the body.

Claims (5)

Pest repellents using wood vinegar as an active ingredient
The method of claim 1,
The wood vinegar is a pest repellent, characterized in that the purified wood vinegar separated from the top layer by liquefying the smoke generated when burning wood.
The method of claim 1,
The pest repellent is a pest repellent, characterized in that it further comprises a plant essential oil (essential oil) extracted by steam distillation.
The method of claim 3,
The plant essential oil is at least one selected from fennel, lavender leaves, mandarin, citrus terphine, Citrus bergamia, extracted by steam evaporation method, 5 to 10 parts by weight based on 100 parts by weight of the wood vinegar solution Pest repellent, characterized in that.
The method of claim 1,
The pests are mosquitoes, mosquitoes on the back, teeth, bedbugs, fleas, flies, bees, stinging stings, bluewings, skytails, plows, midgets, pods, stink bugs, mites, spiders, centipedes, scorpions .