WO2012086542A1 - Insect repellent - Google Patents

Insect repellent Download PDF

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Publication number
WO2012086542A1
WO2012086542A1 PCT/JP2011/079182 JP2011079182W WO2012086542A1 WO 2012086542 A1 WO2012086542 A1 WO 2012086542A1 JP 2011079182 W JP2011079182 W JP 2011079182W WO 2012086542 A1 WO2012086542 A1 WO 2012086542A1
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Prior art keywords
insect repellent
water
powder
pyriproxyfen
gel
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PCT/JP2011/079182
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French (fr)
Japanese (ja)
Inventor
惠子 阪本
智明 岩下
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株式会社ビッグバイオ
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Publication of WO2012086542A1 publication Critical patent/WO2012086542A1/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N63/00Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • A01N63/20Bacteria; Substances produced thereby or obtained therefrom
    • A01N63/22Bacillus
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N63/00Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • A01N63/20Bacteria; Substances produced thereby or obtained therefrom
    • A01N63/22Bacillus
    • A01N63/23B. thuringiensis

Definitions

  • the present invention relates to an insect repellent, and more particularly to an insect repellent containing pyriproxyfen.
  • Mosquitoes such as anopheles that mediate malaria, mosquitoes that mediate Japanese encephalitis and filariae, mosquitoes that mediate dengue fever, and larvae such as chironomids that often cause allergies, and flyfish live in the water system.
  • Various insecticides have been used to control these pests.
  • Non-Patent Document 1 pyriproxyfen acts as a juvenile hormone and exerts a high insecticidal effect on pupae and mosquitoes due to its inhibition of hatching / adult transformation.
  • the animal has no carcinogenicity, influence on reproductive ability, teratogenicity and genotoxicity, and has extremely safe properties for the human body. .
  • Patent Document 1 an insect repellent block can be provided by supporting this pyriproxyfen on a pumice stone and further solidifying it with cement and molding it. It has been confirmed that, in the state where the pyriproxyfen concentration is 10 ppm, the emergence inhibition rate of human striped mosquitoes exceeding 100 days is set to 100%.
  • the mosquito repellent effect cannot be expected during such a long period, and the effect is difficult to see. This is because, unlike labs, ponds, rivers, and puddles where mosquitoes are generated are susceptible to water decay and there are many nutrients suitable for mosquito growth.
  • the insect repellent block uses cement to control the release of pyriproxyfen from the block body, and in the medium to long term, only a structure with many cavities remains, and the water that enters it is replaced. It is easy to stay inside and becomes a hotbed of bacteria that spoil water. Further, the shape of the insect repellent block does not change over time, and it is difficult to determine whether or not the effect is sustained.
  • JP 2007-15842 A Japanese Patent No. 3590019
  • the problem to be solved by the present invention is to provide an insect repellent that solves the above-mentioned problems and maintains the mosquito repellent effect for a long time even when used in a natural environment.
  • Another object of the present invention is to provide an insect repellent that can easily determine the durability of the insect repellent effect.
  • the invention according to claim 1 is directed to 60 Bacillus sphaericus microorganisms, Bacillus subtilis microorganisms, or Bacillus thuringiensis microorganisms.
  • An insect repellent characterized by containing a powder mixed with livestock manure treated at a temperature of about 150 to 150 degrees or a microorganism-containing liquid obtained by adding water to the powder and pyriproxyfen.
  • the invention according to claim 2 is the insect repellent according to claim 1, wherein the composition supporting the powder or the microorganism-containing liquid and the pyriproxyfen is a solid block or a gel substance.
  • the invention according to claim 3 is characterized in that in the insect repellent according to claim 2, the solid block is configured such that the solid part dissolves or the block shape collapses over time in water.
  • the invention according to claim 4 is characterized in that, in the insect repellent according to claim 2, the gel substance is configured to dissolve in water over time.
  • the invention according to claim 5 is the insect repellent according to claim 3 or 4, wherein the time required for the solid block or the gel substance to completely dissolve or disintegrate in water is 2 weeks or more and 12 months or less. It is characterized by being.
  • the invention according to claim 6 is characterized in that in the insect repellent according to claim 2, the solid block or the gel-like substance has a color that can be visually identified in water.
  • a Bacillus sphaericus microorganism, a Bacillus subtilis microorganism, or a Bacillus ⁇ ⁇ ⁇ thuringiensis microorganism which is contained in the insect repellent of the present invention
  • the insect repellent Since the solid block constituting the insect repellent is configured such that the solid part dissolves or the block shape collapses with time in water as in the invention according to claim 3, the insect repellent is determined from the remaining state of the solid block. It becomes possible to easily determine the sustainability of the effect (whether it is sustained or not).
  • the gel substance constituting the insect repellent is configured to dissolve in water as time elapses as in the invention according to claim 4, the persistence of the insect repellent effect (sustained) from the remaining state of the gel substance. It is possible to easily determine whether or not
  • the insect repellent treatment is performed. It is possible to maintain the necessary insect repellent effect by administering the insect repellent repeatedly from once to several times for a necessary period (about one month to several months). In addition, by giving multiple doses within a range where the work burden is not large, it becomes possible to raise awareness of insect repellent treatment and nurture the importance of malaria countermeasures including water treatment to local residents.
  • the insect repellent Since the solid block or the gel-like substance constituting the insect repellent has a color that can be visually discerned in water as in the invention according to claim 6, the insect repellent can be used even in a situation where the insect repellent is disposed in the water. It becomes possible to easily determine the remaining amount of the agent.
  • water purification agent a substance having a water purification effect
  • Bacillus sphaericus microbial bacteria, Bacillus subtilis microbial bacteria, or Bacillus thuringiensis microbial bacteria have an effect on water purification.
  • it is a microbial fungus that can be safely used for living organisms living in the human body and water.
  • these microbial bacteria can be easily obtained from food, etc. in soil, seawater, freshwater sediments, and livestock excrement treated with these microorganisms at high temperature.
  • an inexpensive water purification agent can be provided.
  • the insect repellent of the present invention utilizes this water purification agent, and in particular, Bacillus sphaericus microorganism, Bacillus subtilis microorganism, or Bacillus thuringiensis
  • Bacillus sphaericus microorganism Bacillus subtilis microorganism
  • Bacillus thuringiensis A powder containing microbial bacteria mixed with livestock excrement treated with high temperature or concentrated sulfuric acid at 60 to 150 degrees or a microorganism-containing liquid obtained by adding moisture to the powder is used.
  • the composition carrying the water purification agent and pyriproxyfen is composed of a solid block or a gel substance. This is because when the insect repellent is provided as a liquid or powder, there is almost no visual difference between before and after the administration of the insect repellent to water, so that it is difficult to determine the presence or absence of the administration. This is because it cannot be kept at the place where the agent is administered and must be continuously administered.
  • the main material that forms the solid block is composed of a chemical component such as a water purification agent and pyriproxyfen, a base component that constitutes the base of the solid block, and an aggregating agent that binds the base component.
  • the drug component may be powder or liquid. When using a liquid, it is possible to use it by directly charging the liquid into the powder material. However, the liquid is supported on a porous powder and mixed with the base material. It is also possible to do.
  • mineral powder such as pumice and volcanic ash or resin powder can be used. It is also possible to use water-soluble powder that gradually dissolves in water.
  • the aggregate is made of a material that has the ability to dissolve gradually in water, so that the solid block gradually collapses in water. It becomes possible to do.
  • auxiliary agents such as a dispersant and a foaming agent can be mixed with the composition material of the solid block.
  • the solid block is formed by mixing a drug component, a base material component, a granule agent, and the like and compressing it.
  • the gelling agent is a material in which the gel substance can be dissolved in water. Moreover, in order to adjust a dissolution rate, it is also possible to add the inhibitor which suppresses that a gelatinizer melt
  • the solid block When mineral powder is used in a solid block, the solid block is in a state that can be visually identified in water.
  • a solid block or a gel-like substance is formed using only a transparent material, It becomes difficult to visually observe the state of the insect repellent. For this reason, when forming a solid block or a gel-like substance, it is preferable to add a colorant having a color that can be visually identified in water to the raw material.
  • Mosquitoes that cause malaria occur in the tropical and subtropical regions almost all year round, but there are some regions where the period of high temperature and humidity suitable for mosquitoes is limited to one to several months. Many.
  • dissolve or disintegrate completely in water is 2 weeks or more and 3 months or less. This makes it possible to maintain the necessary insect repellent effect by administering the insect repellent repeatedly from one to several times.
  • by giving multiple doses within a range where the work load is not large it is possible to raise awareness of insect repellent treatment and to foster the importance of malaria countermeasures including water treatment to local residents.
  • test body In order to prepare a test body for an insect repellent, the following materials were mixed in each weight ratio and crushed to form a block body (test body. The total weight of one block was about 115 g). Note that pyriproxyfen uses a liquid diluted to 10% with water, and finally, most of the water used for dilution is removed from the specimen. Pyriproxyfen: 1% by weight (in stock solution equivalent) Water purification agent (Big Bio BB bacteria (registered trademark) liquid) 5% by weight Calcium carbonate: 51% by weight Carboxy methyl hydroxy ethyl cellulose ... 33% by weight Polyethylene glycol: 8% by weight Sodium silicate 2% by weight
  • the following experiment was conducted by consigning to the Japan Food Analysis Center.
  • the specimen was ground into a white powder to prepare a specimen.
  • the test liquid was prepared by suspending the specimen with water for injection.
  • Five-week-old mice were administered in five groups so that the sample dose (mg / kg) was 2000, 1000, 300, 50, and 0.
  • the sample dose (mg / kg) was 2000, 1000, 300, 50, and 0.
  • no abnormality or death was observed in any mouse.
  • the insect repellent of the present invention can maintain the effect of suppressing the generation of mosquitoes over a long period of time, and is extremely safe for animals. It was done.
  • an insect repellent that keeps the mosquito repellent effect for a long time even when used in a natural environment. It is also possible to provide an insect repellent that can easily determine the durability of the insect repellent effect.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Wood Science & Technology (AREA)
  • Microbiology (AREA)
  • Virology (AREA)
  • Biotechnology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The purpose of the invention is to provide an insect repellent, the mosquito-repelling effects of which persist for long periods even when used in a natural environment. Another purpose of the invention is to provide an insect repellent, the persistence of insect-repelling effects of which can be easily discerned. The insect repellent is characterized in containing pyriproxyfen and a powder, wherein Bacillus sphaericus bacteria, Bacillus subtilis bacteria, or Bacillus thuringiensis bacteria have been mixed with livestock manure heat-treated at 60 degrees to 150 degrees, or a microbe-containing liquid obtained by adding water to said powder.

Description

防虫剤Insect repellent
 本発明は、防虫剤に関し、特に、ピリプロキシフェンとを含有する防虫剤に関する。 The present invention relates to an insect repellent, and more particularly to an insect repellent containing pyriproxyfen.
 マラリアを媒介するハマダラカ類、日本脳炎やフィラリアを媒介するイエカ類、デング熱を媒介するシマカ類等の蚊やしばしばアレルギーの原因となるユスリカ類、ブユ類等の幼虫は水系に棲息する。これらの害虫を防除するためには種々の殺虫剤が使用されてきた。 Mosquitoes such as anopheles that mediate malaria, mosquitoes that mediate Japanese encephalitis and filariae, mosquitoes that mediate dengue fever, and larvae such as chironomids that often cause allergies, and flyfish live in the water system. Various insecticides have been used to control these pests.
 その中で、ピリプロキシフェンは、幼若ホルモンとして作用し、蛹化・成虫化の変態阻害作用等により、蝿や蚊などに高い殺虫効果を発揮する。しかも、非特許文献1に示すように、動物に対しては、発がん性、繁殖能に対する影響、催奇形性及び遺伝毒性が認められず、人体に対しては極めて安全な性質を有している。 Among them, pyriproxyfen acts as a juvenile hormone and exerts a high insecticidal effect on pupae and mosquitoes due to its inhibition of hatching / adult transformation. Moreover, as shown in Non-Patent Document 1, the animal has no carcinogenicity, influence on reproductive ability, teratogenicity and genotoxicity, and has extremely safe properties for the human body. .
 本出願人は、特許文献1において、このピリプロキシフェンを軽石に担持させ、さらにセメントで固めて成型することにより防虫ブロックを提供できることを提案した。これは、ピリプロキシフェン濃度が10ppmの状態では、100日を超えるヒトスジジマカの羽化阻害率を100%とすることが確認されている。 The present applicant has proposed in Patent Document 1 that an insect repellent block can be provided by supporting this pyriproxyfen on a pumice stone and further solidifying it with cement and molding it. It has been confirmed that, in the state where the pyriproxyfen concentration is 10 ppm, the emergence inhibition rate of human striped mosquitoes exceeding 100 days is set to 100%.
 しかしながら、実際の使用環境では、蚊の防虫効果は、このような長期の期間は効果が期待できず、また、その効果も見えにくい。これは、蚊が発生する池、河川、水たまりなどは、実験室と異なり、水が腐敗し易く、蚊の生育に適した養分が多く存在するためである。しかも、防虫ブロックは、ブロック本体からピリプロキシフェンを徐放化するためにセメントを使用しており、中長期的には、空洞の多い構造体のみが残存し、その中に入り込んだ水が交換されず内部に留まり易く、水を腐敗させる菌の温床にもなる。また、防虫ブロックは継時的に形状が変化せず、その効果が持続しているのか否かの判別が困難である。 However, in the actual use environment, the mosquito repellent effect cannot be expected during such a long period, and the effect is difficult to see. This is because, unlike labs, ponds, rivers, and puddles where mosquitoes are generated are susceptible to water decay and there are many nutrients suitable for mosquito growth. In addition, the insect repellent block uses cement to control the release of pyriproxyfen from the block body, and in the medium to long term, only a structure with many cavities remains, and the water that enters it is replaced. It is easy to stay inside and becomes a hotbed of bacteria that spoil water. Further, the shape of the insect repellent block does not change over time, and it is difficult to determine whether or not the effect is sustained.
特開2007-15942号公報JP 2007-15842 A 特許第3590019号公報Japanese Patent No. 3590019
 本発明が解決しようとする課題は、上述した問題を解消し、自然環境で使用しても蚊の防虫効果が長期に渡って持続する防虫剤を提供することである。また、防虫効果の持続性が容易に判別可能な防虫剤を提供することである。 The problem to be solved by the present invention is to provide an insect repellent that solves the above-mentioned problems and maintains the mosquito repellent effect for a long time even when used in a natural environment. Another object of the present invention is to provide an insect repellent that can easily determine the durability of the insect repellent effect.
 上記課題を解決するため、請求項1に係る発明は、バチルススパリカス(Bacillus sphaericus)微生物菌、バチルスサブチルス(Bacillus subtilis)微生物菌、またはバチルスツリュゲナイセス(Bacillus thuringiensis)微生物菌を60度~150度で高温処理した家畜糞と混合した粉体又は該粉体に水分を添加して得られる微生物含有液体と、ピリプロキシフェンとを含有することを特徴とする防虫剤である。 In order to solve the above-mentioned problem, the invention according to claim 1 is directed to 60 Bacillus sphaericus microorganisms, Bacillus subtilis microorganisms, or Bacillus thuringiensis microorganisms. An insect repellent characterized by containing a powder mixed with livestock manure treated at a temperature of about 150 to 150 degrees or a microorganism-containing liquid obtained by adding water to the powder and pyriproxyfen.
 請求項2に係る発明は、請求項1に記載の防虫剤において、該粉体又は該微生物含有液体と、該ピリプロキシフェンとを担持する組成物が、固体ブロック又はゲル状物質であることを特徴とする。 The invention according to claim 2 is the insect repellent according to claim 1, wherein the composition supporting the powder or the microorganism-containing liquid and the pyriproxyfen is a solid block or a gel substance. Features.
 請求項3に係る発明は、請求項2に記載の防虫剤において、該固体ブロックは、水中で時間経過と共に、固体部分が溶解又はブロック形状が崩壊するよう構成されていることを特徴とする。 The invention according to claim 3 is characterized in that in the insect repellent according to claim 2, the solid block is configured such that the solid part dissolves or the block shape collapses over time in water.
 請求項4に係る発明は、請求項2に記載の防虫剤において、該ゲル状物質は、水中で時間経過と共に溶解するよう構成されていることを特徴とする。 The invention according to claim 4 is characterized in that, in the insect repellent according to claim 2, the gel substance is configured to dissolve in water over time.
 請求項5に係る発明は、請求項3又は4に記載の防虫剤において、該固体ブロック又は該ゲル状物質が、水中で完全に溶解又は崩壊するまでに要する時間は、2週間以上12カ月以内であることを特徴とする。 The invention according to claim 5 is the insect repellent according to claim 3 or 4, wherein the time required for the solid block or the gel substance to completely dissolve or disintegrate in water is 2 weeks or more and 12 months or less. It is characterized by being.
 請求項6に係る発明は、請求項2に記載の防虫剤において、該固体ブロック又は該ゲル状物質は、水中で可視識別可能な色を有していることを特徴とする。 The invention according to claim 6 is characterized in that in the insect repellent according to claim 2, the solid block or the gel-like substance has a color that can be visually identified in water.
 請求項1に係る発明のように、本発明の防虫剤が含有するバチルススパリカス(Bacillus sphaericus)微生物菌、バチルスサブチルス(Bacillus subtilis)微生物菌、またはバチルスツリュゲナイセス(Bacillus thuringiensis)微生物菌により、水質浄化作用を発揮させることで、ピリプロキシフェンを自然環境で使用しても、蚊の防虫効果が長期に渡って持続することが可能となる。 As in the invention according to claim 1, a Bacillus sphaericus microorganism, a Bacillus subtilis microorganism, or a Bacillus ま た は thuringiensis microorganism, which is contained in the insect repellent of the present invention By exhibiting the water purification effect by the fungus, even if pyriproxyfen is used in a natural environment, the mosquito repellent effect can be maintained for a long time.
 請求項2に係る発明のように、上記微生物菌を含む粉体や液体と、ピリプロキシフェンとを担持する組成物とを、固体ブロック又はゲル状物質とすることで、防虫剤の取り扱いを容易に行うことができる。特に、池や河川など防虫処理が必要な場所へ、必要な薬剤成分を必要な量だけ容易に投与することが可能となる。 As in the invention according to claim 2, by handling the powder or liquid containing the microbial bacteria and the composition carrying pyriproxyfen as a solid block or a gel substance, handling of the insect repellent is easy. Can be done. In particular, it is possible to easily administer the necessary amount of the necessary drug component to a place where insect repellent treatment is necessary, such as a pond or a river.
 請求項3に係る発明のように、防虫剤を構成する固体ブロックは、水中で時間経過と共に、固体部分が溶解又はブロック形状が崩壊するよう構成されているため、固体ブロックの残存状況から、防虫効果の持続性(持続しているか否か)を容易に判別することが可能となる。 Since the solid block constituting the insect repellent is configured such that the solid part dissolves or the block shape collapses with time in water as in the invention according to claim 3, the insect repellent is determined from the remaining state of the solid block. It becomes possible to easily determine the sustainability of the effect (whether it is sustained or not).
 請求項4に係る発明のように、防虫剤を構成するゲル状物質は、水中で時間経過と共に溶解するよう構成されているため、ゲル状物質の残存状況から、防虫効果の持続性(持続しているか否か)を容易に判別することが可能となる。 Since the gel substance constituting the insect repellent is configured to dissolve in water as time elapses as in the invention according to claim 4, the persistence of the insect repellent effect (sustained) from the remaining state of the gel substance. It is possible to easily determine whether or not
 請求項5に係る発明のように、防虫剤を構成する固体ブロック又はゲル状物質が、水中で完全に溶解又は崩壊するまでに要する時間は、2週間以上12カ月以内であるため、防虫処理が必要な期間(1ヶ月~数ヶ月程度)に対して、1回から数回程度繰り返して防虫剤を投与することで、必要な防虫効果を持続させることが可能となる。しかも、作業負担が大きくない範囲で、複数回の投与を行うことで、防虫処理への意識を高め、水処理を含めたマラリア対策の重要性を地域住民に育むことも可能となる。 Since the time required for the solid block or gel substance constituting the insect repellent to completely dissolve or disintegrate in water is 2 weeks or more and 12 months or less as in the invention according to claim 5, the insect repellent treatment is performed. It is possible to maintain the necessary insect repellent effect by administering the insect repellent repeatedly from once to several times for a necessary period (about one month to several months). In addition, by giving multiple doses within a range where the work burden is not large, it becomes possible to raise awareness of insect repellent treatment and nurture the importance of malaria countermeasures including water treatment to local residents.
 請求項6に係る発明のように、防虫剤を構成する固体ブロック又はゲル状物質は、水中で可視識別可能な色を有しているため、防虫剤が水中に配置されている状況でも、防虫剤の残存量を容易に判別することが可能となる。 Since the solid block or the gel-like substance constituting the insect repellent has a color that can be visually discerned in water as in the invention according to claim 6, the insect repellent can be used even in a situation where the insect repellent is disposed in the water. It becomes possible to easily determine the remaining amount of the agent.
 本発明者らが、鋭意研究を重ねた結果、ピリプロキシフェンを担持した防虫ブロックの効果が長期間継続しない原因は、水の腐敗であり、蚊の生育に適した養分の増加であることが判明した。このため、ピリプロキシフェンだけでなく、水質浄化作用を有する物質(以下、「水質浄化剤」という。)を合せて添加したところ、防虫効果の持続性が向上することを見出し、本発明を完成させたものである。 As a result of intensive studies by the present inventors, the cause of the effect of the insect-repellent block carrying pyriproxyfen not lasting for a long time is water decay and an increase in nutrients suitable for mosquito growth. found. For this reason, when adding not only pyriproxyfen but also a substance having a water purification effect (hereinafter referred to as “water purification agent”), it has been found that the sustainability of the insect repellent effect is improved, and the present invention is completed. It has been made.
 また、本発明者は、バチルススパリカス(Bacillus sphaericus)微生物菌、バチルスサブチルス(Bacillus subtilis)微生物菌、またはバチルスツリュゲナイセス(Bacillus thuringiensis)微生物菌が、水質浄化作用に効果を発揮する上、人体や水に生息する生物にも安全に使用可能な微生物菌であることを見出した。しかも、これらの微生物菌は、特許文献2に示すように、土壌、海水、淡水性堆積物中、食物などから容易に入手することができ、そしてこれらの微生物菌に高温処理した家畜糞とを混合した粉体を使用することで、安価な水質浄化剤を提供することできる。 In addition, the present inventor has shown that Bacillus sphaericus microbial bacteria, Bacillus subtilis microbial bacteria, or Bacillus thuringiensis microbial bacteria have an effect on water purification. In addition, we found that it is a microbial fungus that can be safely used for living organisms living in the human body and water. Moreover, as shown in Patent Document 2, these microbial bacteria can be easily obtained from food, etc. in soil, seawater, freshwater sediments, and livestock excrement treated with these microorganisms at high temperature. By using the mixed powder, an inexpensive water purification agent can be provided.
 本発明の防虫剤は、この水質浄化剤を利用しており、特に、バチルススパリカス(Bacillus sphaericus)微生物菌、バチルスサブチルス(Bacillus subtilis)微生物菌、またはバチルスツリュゲナイセス(Bacillus thuringiensis)微生物菌を60度~150度で高温処理又は濃硫酸処理した家畜糞と混合した粉体又は該粉体に水分を添加して得られる微生物含有液体を使用している。 The insect repellent of the present invention utilizes this water purification agent, and in particular, Bacillus sphaericus microorganism, Bacillus subtilis microorganism, or Bacillus thuringiensis A powder containing microbial bacteria mixed with livestock excrement treated with high temperature or concentrated sulfuric acid at 60 to 150 degrees or a microorganism-containing liquid obtained by adding moisture to the powder is used.
 本発明の防虫剤は、水質浄化剤とピリプロキシフェンとを担持する組成物が、固体ブロック又はゲル状物質で構成している。これは、防虫剤を液体や粉末で提供すると、水への防虫剤の投与の前後で視覚的に差異が殆どないため、投与の有無の判別が難しいこと、さらに、流水に対しては、防虫剤を投与した場所に留めることができず、常に投与し続けなければならないためである。 In the insect repellent of the present invention, the composition carrying the water purification agent and pyriproxyfen is composed of a solid block or a gel substance. This is because when the insect repellent is provided as a liquid or powder, there is almost no visual difference between before and after the administration of the insect repellent to water, so that it is difficult to determine the presence or absence of the administration. This is because it cannot be kept at the place where the agent is administered and must be continuously administered.
 固体ブロックを形成する主な材料は、水質浄化剤やピリプロキシフェンなどの薬剤成分と、固体ブロックの基体を構成する基材成分と、この基材成分を結着させる団粒剤とから構成される。薬剤成分は、粉体でも液体でも良い。液体を使用する場合には、液体を粉体材料に直接投入して使用することも可能であるが、液体を多孔質粉体等に担持させ、それを基材成分と一緒に混合して使用することも可能である。 The main material that forms the solid block is composed of a chemical component such as a water purification agent and pyriproxyfen, a base component that constitutes the base of the solid block, and an aggregating agent that binds the base component. The The drug component may be powder or liquid. When using a liquid, it is possible to use it by directly charging the liquid into the powder material. However, the liquid is supported on a porous powder and mixed with the base material. It is also possible to do.
 基材成分としては、軽石や火山灰などの鉱物性粉体又は樹脂製粉体などが利用可能である。また、徐々に水に溶解する水溶性粉体を使用することも可能である。基材成分に鉱物性粉体又は樹脂製粉体を使用する場合には、団粒剤は水中で徐々に溶解する性能を有する材料で構成することにより、固体ブロックが水中で徐々に崩壊するよう構成することが可能となる。 As the base material component, mineral powder such as pumice and volcanic ash or resin powder can be used. It is also possible to use water-soluble powder that gradually dissolves in water. When mineral powder or resin powder is used as the base component, the aggregate is made of a material that has the ability to dissolve gradually in water, so that the solid block gradually collapses in water. It becomes possible to do.
 また、必要に応じて、固体ブロックの組成材料に分散剤や発泡剤などの補助剤を混合することも可能である。固体ブロックは、薬剤成分、基材成分、団粒剤などを混合し、打錠して形成される。 Also, if necessary, auxiliary agents such as a dispersant and a foaming agent can be mixed with the composition material of the solid block. The solid block is formed by mixing a drug component, a base material component, a granule agent, and the like and compressing it.
 ゲル状物質を形成するには、薬剤成分を液体で準備し、必要な濃度に調整した後、ゲル化剤を添加し、ゲル状に固める。必要に応じて加熱・冷却処理を行っても良い。ゲル化剤については、ゲル状物質が水中で溶解可能な材料とする。また、溶解速度を調整するため、ゲル化剤が水中で溶解するのを抑制する抑制剤を添加することも可能である。 To form a gel substance, prepare the drug component in a liquid, adjust the concentration to the required level, add a gelling agent, and harden it into a gel. You may perform a heating / cooling process as needed. The gelling agent is a material in which the gel substance can be dissolved in water. Moreover, in order to adjust a dissolution rate, it is also possible to add the inhibitor which suppresses that a gelatinizer melt | dissolves in water.
 固体ブロックで鉱物性粉体を使用する場合には、固体ブロックは、水中で可視識別可能な状態にあるが、透明材料のみを用いて固体ブロックやゲル状物質を構成する場合には、水中で防虫剤がどのような状況にあるのかを目視して観察することが困難となる。このため、固体ブロック又はゲル状物質を形成する際には、原料に、水中で可視識別可能な色を有する着色剤を添加することが好ましい。 When mineral powder is used in a solid block, the solid block is in a state that can be visually identified in water. However, when a solid block or a gel-like substance is formed using only a transparent material, It becomes difficult to visually observe the state of the insect repellent. For this reason, when forming a solid block or a gel-like substance, it is preferable to add a colorant having a color that can be visually identified in water to the raw material.
 マラリアなどの原因となる蚊などは、熱帯・亜熱帯地域では、ほぼ一年中発生しているが、蚊などの発生に適した高温多湿の時期が、1ヶ月~数ヶ月に限定される地域も多い。このため、本発明の防虫剤では、固体ブロック又はゲル状物質が、水中で完全に溶解又は崩壊するまでに要する時間は、2週間以上3カ月以内とすることが好ましい。これは、1回から数回程度繰り返して防虫剤を投与することで、必要な防虫効果を持続させることが可能となる。しかも、作業負担が大きくない範囲で、複数回の投与を行うことで、防虫処理への意識を高め、水処理を含めたマラリア対策の重要性を地域住民に育むことができる。 Mosquitoes that cause malaria occur in the tropical and subtropical regions almost all year round, but there are some regions where the period of high temperature and humidity suitable for mosquitoes is limited to one to several months. Many. For this reason, in the insect repellent of this invention, it is preferable that the time required for a solid block or gel substance to melt | dissolve or disintegrate completely in water is 2 weeks or more and 3 months or less. This makes it possible to maintain the necessary insect repellent effect by administering the insect repellent repeatedly from one to several times. Moreover, by giving multiple doses within a range where the work load is not large, it is possible to raise awareness of insect repellent treatment and to foster the importance of malaria countermeasures including water treatment to local residents.
 防虫剤の試験体を作成するため、以下の材料を各重量比で混合し、打ち固めてブロック体(試験体。1個のブロックの総重量は、約115gであった。)を形成した。なお、ピリプロキシフェンは、10%に水で希釈化した液体を使用し、最終的には試験体から希釈化に使用した水分の大半は除去されている。
 ピリプロキシフェン・・・1重量%(原液換算)
 水質浄化剤(ビッグバイオ製BB菌(登録商標)液体)・・・5重量%
 炭酸カルシウム・・・51重量%
 カルボキシ・メチル・ヒドロキシ・エチル・セルロース・・・33重量%
 ポリエチレン・グリコール・・・8重量%
 ケイ酸ナトリウム・・・2重量%
In order to prepare a test body for an insect repellent, the following materials were mixed in each weight ratio and crushed to form a block body (test body. The total weight of one block was about 115 g). Note that pyriproxyfen uses a liquid diluted to 10% with water, and finally, most of the water used for dilution is removed from the specimen.
Pyriproxyfen: 1% by weight (in stock solution equivalent)
Water purification agent (Big Bio BB bacteria (registered trademark) liquid) 5% by weight
Calcium carbonate: 51% by weight
Carboxy methyl hydroxy ethyl cellulose ... 33% by weight
Polyethylene glycol: 8% by weight
Sodium silicate 2% by weight
 試験体の防虫効果を確認するため、マレーシア薬品調査研究所に委託し、以下の実験を行った。まず、上部が開口した壺lに60Lの水が入れ、試験体を1個投入する。また、壺の水は、毎日、半分の30Lを除いて、新しい水に入れ替えている。ハマダラカ(An. maculatus)の幼虫を1週間に25匹ずつ壺に投入する。 In order to confirm the insect repellent effect of the specimen, the following experiment was conducted by commissioning the Malaysian Pharmaceutical Research Institute. First, 60 L of water is put into a pot 1 having an opening at the top, and one specimen is put in. In addition, the water of the agate is replaced with fresh water every day except for half of the 30L. Larvae of Anopheles moth (An. Tusmaculatus) are put into a cocoon, 25 per week.
 その結果、45週までは、試験体を投入した壺は孵化した成虫は全く観察されなかった。一方、試験体を投入しない壺では、数日で幼虫が孵化し成虫となり、1週間で80%以上が成虫になっていることを確認した。 As a result, until 45 weeks, the hatched adults were not observed at all. On the other hand, it was confirmed that in the pupae without the test specimen, the larvae hatched and became adults within a few days, and more than 80% became adults in one week.
 また、マレーシア・クアラルンプールにある川床の水溜りに試験体を投入したところ、190日間の蚊が成虫になるのが抑制された。蚊(An. culcifacies)で78%、蚊(An. subpictus)で72%の減少が確認され、マラリア発生率が約7割減少した。 In addition, when a test specimen was introduced into a river bed in Kuala Lumpur, Malaysia, the mosquitoes for 190 days were suppressed from becoming adults. A 78% decrease in mosquitoes (An. Culcifacies) and 72% in mosquitoes (An. Subpictus) were confirmed, and the incidence of malaria was reduced by approximately 70%.
 さらに、試験体の安全性を評価するため、財団法人日本食品分析センターに委託し、以下の実験を行った。試験体を磨り潰して白色粉末とし、検体を作成した。検体を、注射用水で懸濁して試験液を調整した。5週齢のマウスに対し、検体投与用量(mg/kg)が2000,1000,300,50、及び0となるよう5つの群に分けて投与した。14日間観察した結果、いずれのマウスにも異常や死亡例は認められなかった。 Furthermore, in order to evaluate the safety of the test specimens, the following experiment was conducted by consigning to the Japan Food Analysis Center. The specimen was ground into a white powder to prepare a specimen. The test liquid was prepared by suspending the specimen with water for injection. Five-week-old mice were administered in five groups so that the sample dose (mg / kg) was 2000, 1000, 300, 50, and 0. As a result of observation for 14 days, no abnormality or death was observed in any mouse.
 これらの試験結果より、本発明の防虫剤は、蚊の発生を抑制する効果が長期間に渡り維持することが可能であること、しかも、動物に対しては、極めて安全性が高いことが確認された。 From these test results, it is confirmed that the insect repellent of the present invention can maintain the effect of suppressing the generation of mosquitoes over a long period of time, and is extremely safe for animals. It was done.
 本発明によれば、自然環境で使用しても蚊の防虫効果が長期に渡って持続する防虫剤を提供することができる。また、防虫効果の持続性が容易に判別可能な防虫剤を提供することも可能となる。 According to the present invention, it is possible to provide an insect repellent that keeps the mosquito repellent effect for a long time even when used in a natural environment. It is also possible to provide an insect repellent that can easily determine the durability of the insect repellent effect.

Claims (6)

  1.  バチルススパリカス(Bacillus sphaericus)微生物菌、バチルスサブチルス(Bacillus subtilis)微生物菌、またはバチルスツリュゲナイセス(Bacillus thuringiensis)微生物菌を60度~150度で高温処理した家畜糞と混合した粉体又は該粉体に水分を添加して得られる微生物含有液体と、ピリプロキシフェンとを含有することを特徴とする防虫剤。 Powder mixed with livestock feces treated at 60-150 ° C with Bacillus sphaericus microbial fungus, Bacillus subtilis microbial fungus or Bacillus thuringiensis microbial fungus Alternatively, an insect repellent comprising a microorganism-containing liquid obtained by adding moisture to the powder and pyriproxyfen.
  2.  請求項1に記載の防虫剤において、該粉体又は該微生物含有液体と、該ピリプロキシフェンとを担持する組成物が、固体ブロック又はゲル状物質であることを特徴とする防虫剤。 The insect repellent according to claim 1, wherein the powder or the microorganism-containing liquid and the composition carrying the pyriproxyfen are solid blocks or gel substances.
  3.  請求項2に記載の防虫剤において、該固体ブロックは、水中で時間経過と共に、固体部分が溶解又はブロック形状が崩壊するよう構成されていることを特徴とする防虫剤。 3. The insect repellent according to claim 2, wherein the solid block is configured such that the solid part dissolves or the block shape collapses over time in water.
  4.  請求項2に記載の防虫剤において、該ゲル状物質は、水中で時間経過と共に溶解するよう構成されていることを特徴とする防虫剤。 3. The insect repellent according to claim 2, wherein the gel substance is configured to dissolve in water over time.
  5.  請求項3又は4に記載の防虫剤において、該固体ブロック又は該ゲル状物質が、水中で完全に溶解又は崩壊するまでに要する時間は、2週間以上12カ月以内であることを特徴とする防虫剤。 The insect repellent according to claim 3 or 4, wherein the time required for the solid block or the gel substance to completely dissolve or disintegrate in water is 2 weeks or more and 12 months or less. Agent.
  6.  請求項2に記載の防虫剤において、該固体ブロック又は該ゲル状物質は、水中で可視識別可能な色を有していることを特徴とする防虫剤。 3. The insect repellent according to claim 2, wherein the solid block or the gel-like substance has a color that can be visually identified in water.
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