JP5289008B2 - Mosquito coil for infectious disease control mosquito control - Google Patents

Mosquito coil for infectious disease control mosquito control Download PDF

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JP5289008B2
JP5289008B2 JP2008297937A JP2008297937A JP5289008B2 JP 5289008 B2 JP5289008 B2 JP 5289008B2 JP 2008297937 A JP2008297937 A JP 2008297937A JP 2008297937 A JP2008297937 A JP 2008297937A JP 5289008 B2 JP5289008 B2 JP 5289008B2
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aedes aegypti
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JP2010120903A (en
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純郎 勝田
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Dainihon Jochugiku Co Ltd
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Description

本発明は、感染症媒介蚊防除用蚊取線香に関するものである。 The present invention relates to a mosquito coil for controlling infection-borne mosquitoes.

世界には多種の蚊が生息し、人を刺咬・吸血するだけでなく、感染症を媒介して重大な被害をもたらす。例えば、いくつかの感染症とこれを媒介する蚊の種類について、下記の関連性が知られている。
・マラリア:ハマダラカ類(Anopheles dirus, A. minimus, A. gambiae, A. sinensis)、
・デング熱:ネッタイシマカ、ヒトスジシマカ、
・黄熱病:ネッタイシマカ、
・フィラリア症:ネッタイイエカ、アカイエカ、チカイエカ、
・日本脳炎:コガタアカイエカ、
・ウエストナイル熱:イエカ、ヤブカなど30〜40種、
・チクングンヤ:ネッタイシマカ、ヒトスジシマカ。
これらの感染症から身を守る方法は、適当なワクチンがない今日、蚊に刺されないことが第一で、特に開放的な住居では蚊取線香の使用が最適である。蚊帳にピレスロイドを含浸させたものも使用されているが、就寝中しか使えないこと、蚊帳の中は暑苦しいことなど、使用性に問題が多い。
かかる現状において、ネッタイシマカやネッタイイエカ等に卓効を示し、かつ製造コストが安価な蚊取線香を供給することは、特に東南アジアやアフリカ等の熱帯地域住民を感染症の被害から守っていくうえで極めて効果的な対策手段である。
There are many types of mosquitoes in the world that not only bite and suck blood, but also cause serious damage through infection. For example, the following relationships are known for several infectious diseases and the types of mosquitoes that carry them.
Malaria: Anopheles dirus, A. minimus, A. gambiae, A. sinensis
・ Dengue fever: Aedes aegypti, Aedes aegypti,
・ Yellow fever: Aedes aegypti
• Filariasis: Attached squid, squid, chikaeka,
・ Japanese encephalitis: Culex mosquito,
・ West Nile fever: 30-40 kinds such as squid and yabuka,
Chikungunya: Aedes aegypti, Aedes aegypti.
The best way to protect yourself from these infections is to avoid being stabbed by mosquitoes today, where there is no appropriate vaccine, and the use of mosquito coils is the best choice, especially in open houses. Although mosquito nets impregnated with pyrethroids are also used, there are many problems in usability, such as being usable only while sleeping and being hot in mosquito nets.
In such a situation, supplying mosquito coils with excellent effects on Aedes aegypti, Aedes albopictus, etc. and low manufacturing costs is extremely important in protecting tropical inhabitants from Southeast Asia and Africa, especially from infectious diseases. It is an effective countermeasure.

これまで蚊取線香の有効成分としては、ピレスロイド系殺虫成分のアレスリン類が世界的に使用されてきたが、最近、東南アジア地域において一部ではあるが、主要種のネッタイイエカ類に対するアレスリン類の効き目が落ちているという報告があり、その対応に関心が寄せられている。
近年、新しい殺虫成分の開発も進められ、例えば、文献[Biosci. Biotechnol. Biochem., 68(1) 170, 2004](非特許文献1)によれば、新規ピレスロイド系殺虫成分のメトフルトリン[4−メトキシメチル−2,3,5,6−テトラフルオロベンジル 2,2−ジメチル−3−(1−プロペニル)シクロプロパンカルボキシラート]を含有する蚊取線香がネッタイイエカやアカイエカに対して、d−アレスリンの1/40〜1/20の濃度で、d−アレスリン蚊取線香とほぼ同等のノックダウン効果を示したことが報告されている。しかしながら、メトフルトリンは、合成が複雑で製造コストも高く、d−アレスリン蚊取線香よりも数倍殺虫効力の高い蚊取線香を得ようとすると、安価に供給できないという難点を有している。
Until now, allethrins of pyrethroid insecticidal ingredients have been used worldwide as active ingredients of mosquito coils, but recently, the effects of allethrins on the main species of Aedes mosquitoes have been partly in Southeast Asia. There is a report that it has fallen, and there is interest in dealing with it.
In recent years, the development of new insecticidal components has also been promoted. For example, according to the literature [Biosci. Biotechnol. Biochem., 68 (1) 170, 2004] (Non-patent Document 1), a novel pyrethroid insecticidal component, metfluthrin [4- Mosquito coils containing methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2-dimethyl-3- (1-propenyl) cyclopropanecarboxylate] It has been reported that at a concentration of 1/40 to 1/20, a knockdown effect almost equivalent to that of d-alleslin mosquito coil was shown. However, metofluthrin has a difficulty in that it cannot be supplied at low cost when it is attempted to obtain a mosquito coil incense that is complicated in synthesis and high in production cost and has several times higher insecticidal efficacy than d-areslin mosquito coil.

本発明者らは、先に、蚊取線香の有効成分として、4−メトキシメチル−2,3,5,6−テトラフルオロベンジル 2,2,3,3−テトラメチルシクロプロパンカルボキシレートに着目し、効力増強剤として、N−(2−エチルヘキシル)−ビシクロ[2,2,1]−ヘプタ−5−エン−2,3−ジカルボキシイミド[以降、効力増強剤Aと称す]を、その有効成分量に対して0.1倍量以上、好ましくは2.0〜5.0倍量配合することによって、ネッタイシマカやネッタイイエカ等に卓効を示し、感染症媒介蚊防除用蚊取線香として極めて有用であることを開示した(特許文献1)。
更に、本発明者らは、有効成分として(S)−2−メチル−4−オキソ−3−(2−プロピニル)−2−シクロペンテニル (1R)−トランス−クリサンテマートを用い、その有効成分量に対して効力増強剤Aを1.0〜5.0倍量配合した蚊取線香が、同様にネッタイシマカやネッタイイエカ等に極めて有効であることを知見し、特許を取得した(特許文献2)。
The present inventors first focused on 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate as an active ingredient of a mosquito coil. As an efficacy enhancer, N- (2-ethylhexyl) -bicyclo [2,2,1] -hept-5-ene-2,3-dicarboximide [hereinafter referred to as efficacy enhancer A] is effective. By blending 0.1 times or more, preferably 2.0 to 5.0 times the amount of the ingredients, it is effective for Aedes aegypti, Aedes mosquito, etc. and is extremely useful as a mosquito coil for controlling infection-borne mosquitoes (Patent Document 1).
Furthermore, the present inventors used (S) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (1R) -trans-chrysantemate as an active ingredient, and the active ingredient It was found that mosquito coil incense containing 1.0 to 5.0 times the potency enhancer A with respect to the amount was also extremely effective for Aedes aegypti, Aedes squid, etc., and obtained a patent (Patent Document 2). .

しかしながら、本発明者らは、これらの有効成分が石油資源を原料とする合成ピレスロイドで、将来的にその枯渇が懸念されること、また、人畜に対する安全性の面から天然産の殺虫成分が見直されていることを鑑み、感染症媒介蚊防除用蚊取線香の有効成分として天然ピレトリンの活用を検討した。その結果、天然ピレトリン単独の蚊取線香では、ネッタイシマカやネッタイイエカに対する殺虫効力が低く、効力増強剤との併用が必要と考えられた。ところが、天然ピレトリン蚊取線香に効力増強剤を配合する従来の知見としては、非特許文献1に示すように、ピペロニルブトキサイドを種々の割合で配合し、円筒法でアカイエカに対する効力試験を行ったところ、効力増強効果が全く得られなかったという報告のみであった。
特許第3926836号公報 特許第4127721号公報 Biosci. Biotechnol. Biochem., 68(1) 170, 2004 防虫科学, 17-47, 1952
However, the inventors of the present invention are synthetic pyrethroids using petroleum resources as a raw material for these active ingredients, and there are concerns about their depletion in the future, and natural insecticidal ingredients have been reviewed from the viewpoint of safety for human livestock. In view of the above, we examined the use of natural pyrethrin as an active ingredient in mosquito coils for controlling infectious disease mosquitoes. As a result, mosquito coils with natural pyrethrin alone have a low insecticidal effect against Aedes aegypti and Aedes aegypti, and it was considered necessary to use in combination with a potentiator. However, as shown in Non-Patent Document 1, the conventional knowledge of blending efficacy enhancers with natural pyrethrin mosquito coils is that piperonyl butoxide is blended at various ratios, and the potency test against squid is performed by the cylindrical method. As a result, it was only a report that no effect of enhancing the efficacy was obtained.
Japanese Patent No. 3926836 Japanese Patent No. 4127721 Biosci. Biotechnol. Biochem., 68 (1) 170, 2004 Insect repellent science, 17-47, 1952

本発明は、天然ピレトリンを含有する蚊取線香であって、ネッタイシマカやネッタイイエカ等に卓効を示し、かつ安価に製造でき、しかも人畜に対する安全性に優れた感染症媒介蚊防除用蚊取線香を提供することを目的とする。 The present invention is a mosquito coil incense containing natural pyrethrin, which is effective for Aedes aegypti, Aedes albopictus, etc., can be manufactured at low cost, and has excellent safety for human livestock. The purpose is to provide.

本発明は、上記課題を解決するため、次のような構成を採用する。
(1)有効成分として、天然ピレトリンを0.8〜1.2質量%含有し、かつ、効力増強剤として、N−(2−エチルヘキシル)−ビシクロ[2,2,1]−ヘプタ−5−エン−2,3−ジカルボキシイミドを、有効成分量に対して0.3〜3.0倍量配合してなり、ネッタイシマカを防除する感染症媒介蚊防除用蚊取線香。
In order to solve the above problems, the present invention employs the following configuration.
(1) It contains 0.8 to 1.2% by mass of natural pyrethrin as an active ingredient, and N- (2-ethylhexyl) -bicyclo [2,2,1] -hepta-5 as an efficacy enhancer. ene-2,3-dicarboximide, Ri Na formulated 0.3-3.0 times the amount of the active ingredient, infections mosquito control for mosquito you control the Aedes aegypti.

本発明の感染症媒介蚊防除用蚊取線香は、天然ピレトリンと前記効力増強剤Aとの相乗効果に基づき、ネッタイシマカやネッタイイエカ等に卓効を示し、しかも人畜に対する安全性に優れているので、その実用性は極めて高い。 Since the mosquito coil for controlling infection vector mosquitoes of the present invention is based on the synergistic effect of natural pyrethrin and the above-mentioned potency enhancer A, it shows a superior effect on Aedes aegypti, Aedes aegypti, etc., and is excellent in safety for human animals. Its practicality is extremely high.

本発明の感染症媒介蚊防除用蚊取線香で使用される有効成分は、天然ピレトリンである。天然ピレトリンは、ピレトリンI、II、シネリンI、II、及びジャスモリンI、IIの6種類の殺虫成分から成り、本発明では、その有効成分量は6種類の殺虫成分の総量で示される。天然ピレトリンは、合成ピレスロイドに較べ下記の点で大きなメリットを有する。
1)家庭用殺虫剤に用いられる合成ピレスロイドは、その酸部分が天然ピレトリンのI類に相当するもののみであって、II類に相当する酸部分を有する成分を含まない。これに対し、天然ピレトリンは化学構造の異なるI類及びII類から構成されるため、昆虫に抵抗性を発達させにくいとされている。
2)天然ピレトリンは、炭素、水素及び酸素のみから構成され、長年にわたる使用実績を有するのに対し、最近開発された合成ピレスロイドは、効力アップに集中して、塩素、フッ素原子やシアノ基等の導入が一般化し、人畜に対する安全性や環境保全への影響が懸念されている。
The active ingredient used in the mosquito coil for controlling infection vector mosquitoes of the present invention is natural pyrethrin. Natural pyrethrin consists of six types of insecticidal components, pyrethrins I, II, cinerine I, II, and jasmolins I, II. In the present invention, the amount of the active ingredient is indicated by the total amount of the six types of insecticidal components. Natural pyrethrins have significant advantages in the following respects compared to synthetic pyrethroids.
1) Synthetic pyrethroids used for household insecticides are only those whose acid moiety corresponds to class I of natural pyrethrin, and do not contain components having an acid moiety corresponding to class II. In contrast, natural pyrethrins are composed of Group I and Group II having different chemical structures, and it is therefore difficult to develop resistance to insects.
2) Natural pyrethrin consists only of carbon, hydrogen and oxygen and has a long track record of use, whereas recently developed pyrethroids have concentrated on improving efficacy, such as chlorine, fluorine atoms and cyano groups. The introduction has been generalized, and there are concerns about the impact on safety and environmental protection for human livestock.

天然ピレトリンは、除虫菊から抽出、精製工程を経て得ることができるが、現状除虫菊の栽培には足掛け3年かかり、必ずしも効率的とは言えない。生合成に関わる遺伝子が解明され、今後天然ピレトリンの効率的な生産に向けて応用研究が進めば、より安価な天然ピレトリンの供給も可能になるものと期待される。 Although natural pyrethrin can be obtained from an insecticide chrysanthemum through an extraction and purification process, it currently takes 3 years to cultivate the insecticide chrysanthemums and is not necessarily efficient. If genes involved in biosynthesis are elucidated and applied research is promoted for efficient production of natural pyrethrins, it is expected that cheaper natural pyrethrins can be supplied.

天然ピレトリンは、常温で液状を呈し有機溶剤に一般に容易に溶解するが、当該有機溶剤に溶解した天然ピレトリンと木粉等の蚊取線香基材と混合して本発明の感染症媒介蚊防除用蚊取線香を構成する。
蚊取線香中の有効成分含量は、各種感染症媒介蚊に対する殺虫効力ならびに経済性等を考慮して0.6〜1.5質量%、好ましくは0.8〜1.2質量%に設定される。
Natural pyrethrin is liquid at room temperature and is generally easily dissolved in organic solvents. However, natural pyrethrin is mixed with natural pyrethrin dissolved in the organic solvent and a mosquito coil incense base such as wood powder. Consists of mosquito coils.
The active ingredient content in the mosquito coil is set to 0.6 to 1.5% by mass, preferably 0.8 to 1.2% by mass in consideration of insecticidal efficacy against various infectious disease mosquitoes and economic efficiency. The

本発明の感染症媒介蚊防除用蚊取線香は、効力増強剤として、N−(2−エチルヘキシル)−ビシクロ[2,2,1]−ヘプタ−5−エン−2,3−ジカルボキシイミド(効力増強剤A)を、有効成分量に対して0.3〜3.0倍量配合することを特徴とする。 The mosquito coil for controlling infection-borne mosquitoes of the present invention has N- (2-ethylhexyl) -bicyclo [2,2,1] -hept-5-ene-2,3-dicarboximide ( The efficacy enhancer A) is blended in an amount of 0.3 to 3.0 times the amount of the active ingredient.

従来、種々製剤において、ピペロニルブトキサイド、N−(2−エチルヘキシル)−ビシクロ[2,2,1]−ヘプタ−5−エン−2,3−ジカルボキシイミド(効力増強剤A)、N−(2−エチルヘキシル)−1−イソプロピル−4−メチルビシクロ[2,2,2]−オクト−5−エン−2,3−ジカルボキシイミド、オクタクロロジプロピルエーテルなどのピレスロイド用共力剤を混用することがしばしば行われてきた。
すなわち、上記ピレスロイド用共力剤は、例えば液剤や粉剤等に用いた場合、それ自体では生物活性を示さないが、ピレスロイドと混用した場合、ピレスロイドの効力を増強することが知られている。共力剤のメカニズムについては多くの報告があり、例えば、昆虫体内で自らが代謝分解を受けてピレスロイドの酸化的解毒代謝を阻害したり、あるいはピレスロイドの皮膚への浸透を促進し、神経系作用点への到達を容易にすることによって、ピレスロイドの殺虫効力を高めることなどが知られている。しかしながら、かかる共力剤の作用機構は当然のことながら昆虫の種類に大きく依存し、共力剤による共力効果は通常10〜20%程度にとどまるのが一般的である。
Conventionally, in various preparations, piperonyl butoxide, N- (2-ethylhexyl) -bicyclo [2,2,1] -hept-5-ene-2,3-dicarboximide (efficacy enhancer A), N Synergists for pyrethroids such as-(2-ethylhexyl) -1-isopropyl-4-methylbicyclo [2,2,2] -oct-5-ene-2,3-dicarboximide and octachlorodipropyl ether; Mixing has often been done.
That is, when the above-mentioned synergist for pyrethroid is used for, for example, a liquid or a powder, it does not exhibit biological activity by itself, but is known to enhance the efficacy of pyrethroid when mixed with pyrethroid. There are many reports on the mechanism of synergists. For example, the body itself undergoes metabolic degradation to inhibit the oxidative detoxification metabolism of pyrethroids, or promote the penetration of pyrethroids into the skin, acting on the nervous system. It is known to increase the insecticidal efficacy of pyrethroids by making it easy to reach the point. However, the mechanism of action of such a synergist depends naturally on the type of insect, and the synergistic effect of the synergist is generally only about 10 to 20%.

これに対し、本発明者らは、特許文献1や特許文献2で開示したように、蚊取線香の有効成分として、4−メトキシメチル−2,3,5,6−テトラフルオロベンジル 2,2,3,3−テトラメチルシクロプロパンカルボキシレート、及び(S)−2−メチル−4−オキソ−3−(2−プロピニル)−2−シクロペンテニル (1R)−トランス−クリサンテマートを用い、これらに効力増強剤Aをその有効成分量に対して数倍〜5.0倍量配合することによって、ネッタイシマカやネッタイイエカ等に卓効を示すことを見出した。この事実は、従来ピレスロイド製剤に使用されている共力剤のメカニズム、即ち上述した昆虫生理学的機構だけでは説明できず、別の原因として、ある物質が有効成分の揮散率上昇に寄与し有効成分の気中濃度を高めたことや、揮散した有効成分の拡散をある物質が助長したことなど、物理的な作用も貢献しているものと考えられた。 On the other hand, as disclosed in Patent Document 1 and Patent Document 2, the present inventors have used 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2 as an active ingredient of a mosquito coil. , 3,3-tetramethylcyclopropanecarboxylate and (S) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (1R) -trans-chrysanthemate It has been found that the efficacy enhancer A is compounded several times to 5.0 times the amount of the active ingredient, thereby exhibiting an excellent effect on Aedes aegypti, Aedes squid, and the like. This fact cannot be explained only by the mechanism of the synergist conventionally used in pyrethroid preparations, that is, the insect physiological mechanism described above. As another cause, a certain substance contributes to an increase in the volatilization rate of the active ingredient and the active ingredient. It was thought that the physical action also contributed, such as raising the concentration in the air and promoting the diffusion of the volatilized active ingredient.

次に、本発明者らは、感染症媒介蚊防除用蚊取線香の有効成分として天然ピレトリンの使用を検討したが、天然ピレトリン単独の蚊取線香では、ネッタイシマカやネッタイイエカに対する殺虫効力が低く、効力増強剤との併用が必要と考えられた。ところが、天然ピレトリン蚊取線香に効力増強剤を配合する従来の知見としては、非特許文献4に示すように、ピペロニルブトキサイドを配合した線香でのアカイエカに対する効力試験しかなく、本発明者らは、種々の組み合わせにつき鋭意検討を行った。
その結果、天然ピレトリンと効力増強剤Aの組み合わせは、特許文献1や特許文献2とは異なる配合範囲で顕著な効力増強効果を示すことが明らかとなり、本発明を完成するに至ったものである。
Next, the present inventors examined the use of natural pyrethrin as an active ingredient of a mosquito coil for controlling infection-borne mosquitoes. Concomitant use with a potentiator was considered necessary. However, as shown in Non-Patent Document 4, the conventional knowledge of blending a potency enhancer with natural pyrethrin mosquito coils is only a potency test for cabbage mosquitoes with incense blending piperonyl butoxide. Et al. Conducted intensive studies on various combinations.
As a result, it has been clarified that the combination of natural pyrethrin and potency enhancer A exhibits a remarkable potency enhancing effect in a blending range different from Patent Document 1 and Patent Document 2, and thus the present invention has been completed. .

本発明の実施形態として、効力増強剤の補助剤として、効力増強剤Aに加えて更にアルキルベンゼンスルホン酸の低級アルキルアミン塩を配合してもよい。ここで、アルキルベンゼンスルホン酸のアルキル基はC8〜C14程度、一方、アルキルアミン塩の低級アルキル基はC2〜C4程度がよく、例えば、ドデシルベンゼンスルホン酸イソプロピルアミン塩やドデシルベンゼンスルホン酸エチルアミン塩を代表例としてあげることができる。
アルキルベンゼンスルホン酸の低級アルキルアミン塩の効力増強剤Aに対する比率は、0.2〜1.0倍量の範囲が適当である。
As an embodiment of the present invention, in addition to the efficacy enhancer A, a lower alkylamine salt of alkylbenzene sulfonic acid may be further blended as an adjunct to the efficacy enhancing agent. Here, the alkyl group of the alkyl benzene sulfonic acid is preferably about C 8 to C 14 , while the lower alkyl group of the alkyl amine salt is preferably about C 2 to C 4 , for example, dodecyl benzene sulfonic acid isopropylamine salt or dodecyl benzene sulfonic acid. A typical example is an ethylamine salt.
The ratio of the alkylbenzenesulfonic acid lower alkylamine salt to the efficacy enhancer A is suitably in the range of 0.2 to 1.0 times.

蚊取線香基材としては、支燃剤や粘結剤があり、前者には、木粉、除虫菊抽出粕粉、柑橘類の表皮粉、ココナッツシェル粉末等の植物性粉末や、木炭粉、素灰等の炭素粉末があげられる。また、後者の粘結剤としては、タブ粉、澱粉、メチルセルロース、カルボキシメチルセルロース等を例示できる。 As mosquito coils, there are flame retardants and binders. The former includes plant powders such as wood powder, pesticide extracted chrysanthemum powder, citrus skin powder, coconut shell powder, charcoal powder, bare ash, etc. Carbon powder. Examples of the latter binder include tab powder, starch, methyl cellulose, carboxymethyl cellulose and the like.

本発明の感染症媒介蚊防除用蚊取線香には、必要により、色素、防腐剤、安定剤等が含有されてもよい。色素としては、例えばマラカイトグリーン等の有機染料があげられ、防腐剤としては、例えばソルビン酸、デヒドロ酢酸、p−ヒドロキシ安息香酸等の酸、あるいはそれらの塩等が代表的である。また、安定剤としては、2,6−ジ−ターシャリーブチル−4−メチルフェノール(BHT)や2,2’−メチレンビス(4−エチル−6−ターシャリーブチルフェノール)等があげられるがこれらに限定されない。 The mosquito coil for controlling infectious disease-mediated mosquitoes of the present invention may contain a dye, an antiseptic, a stabilizer and the like, if necessary. Examples of the pigment include organic dyes such as malachite green, and typical examples of the preservative include acids such as sorbic acid, dehydroacetic acid, p-hydroxybenzoic acid, and salts thereof. Examples of the stabilizer include 2,6-di-tertiarybutyl-4-methylphenol (BHT) and 2,2′-methylenebis (4-ethyl-6-tertiarybutylphenol), but are not limited thereto. Not.

更に、本発明の趣旨を妨げない限りにおいて、他の殺虫、防虫成分、例えば、アレスリン、プラレトリン、メトフルトリン、フラメトリン、トランスフルトリン、エムペントリン、4−メトキシメチル−2,3,5,6−テトラフルオロベンジル 2,2,3,3−テトラメチルシクロプロパンカルボキシレート等の従来のピレスロイド系殺虫剤、殺菌剤、抗菌剤、忌避剤、あるいは芳香剤、消臭剤等を混合し、効力のすぐれた多目的組成物を得ることもできる。 In addition, other insecticides and insect repellent components such as allethrin, praretrin, methofluthrin, framethrin, transfluthrin, empentrin, 4-methoxymethyl-2,3,5,6-tetrafluoro, as long as they do not interfere with the spirit of the present invention Benzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and other conventional pyrethroid insecticides, bactericides, antibacterial agents, repellents, fragrances, deodorants, etc. A composition can also be obtained.

本発明の感染症媒介蚊防除用蚊取線香を調製するにあたっては、何ら特別の技術を必要とせず、公知の製造方法を採用できる。例えば、プレミックス粉(有効成分や効力増強剤等を支燃剤の一部に含有させたもの)と残部の蚊取線香基材を混合したものに水を加えて混練し、続いて、押出機、打抜機によって成型後、乾燥して蚊取線香を製すればよい。また、蚊取線香基材のみを用いて成型後、これに有効成分等を含む液剤をスプレーあるいは塗布するようにしても構わない。 In preparing the mosquito coil for controlling infection vector mosquitoes of the present invention, any special technique is not required and a known production method can be adopted. For example, premix powder (containing active ingredients and potency enhancer in part of the flame retardant) and the remaining mosquito coil base material are mixed with water and then kneaded, followed by an extruder After molding with a punching machine, it can be dried to produce a mosquito coil. Further, after molding using only the mosquito coil incense base material, a liquid agent containing an active ingredient or the like may be sprayed or applied thereto.

本発明の感染症媒介蚊防除用蚊取線香は、ネッタイシマカ、ネッタイイエカ、ハマダラカ類、ヒトスジシマカ、アカイエカ等の感染症媒介蚊類に特異的に卓効を示すが、もちろん、他種の蚊やハエ、ゴキブリ、屋内塵性ダニ類等の衛生害虫等の種々の害虫にも有効であり、その実用性は極めて高い。 The mosquito coil for controlling infection vector mosquitoes of the present invention is particularly effective for infection vector mosquitoes such as Aedes aegypti, Aedes aegypti, Anopheles, Aedes albopictus, Culex, etc. It is also effective against various pests such as cockroaches and sanitary pests such as indoor dust mites, and its practicality is extremely high.

次に、具体的実施例に基づいて本発明の感染症媒介蚊防除用蚊取線香を更に詳細に説明する。 Next, the mosquito coil for controlling infection vector mosquitoes according to the present invention will be described in more detail based on specific examples.

天然ピレトリン(0.8部)及び効力増強剤A(0.3部)を、除虫菊抽出粕粉、木粉、澱粉等の蚊取線香基材98.9部に均一に混合後、色素と防腐剤を含む水を加え、公知の方法によって本発明の感染症媒介蚊防除用蚊取線香を得た。 Natural pyrethrin (0.8 parts) and potency enhancer A (0.3 parts) are uniformly mixed with 98.9 parts of a mosquito coiled incense base material such as insecticide chrysanthemum extract powder, wood powder, starch, etc. The water containing the agent was added, and the mosquito coil for controlling infection vector mosquitoes of the present invention was obtained by a known method.

天然ピレトリン(1.0部)、効力増強剤A(0.8部)、ドデシルベンゼンスルホン酸イソプロピルアミン塩0.5部、及び2,6−ジ−ターシャリーブチル−4−メチルフェノール0.1部を、ココナッツシェル粉末、木粉、タブ粉、澱粉等の蚊取線香基材97.6部に均一に混合後、防腐剤を含む水を加え、公知の方法によって本発明の感染症媒介蚊防除用蚊取線香を得た。 Natural pyrethrin (1.0 part), potency enhancer A (0.8 part), dodecylbenzenesulfonic acid isopropylamine salt 0.5 part, and 2,6-ditertiarybutyl-4-methylphenol 0.1 Is uniformly mixed with 97.6 parts of mosquito coils such as coconut shell powder, wood powder, tab powder, starch, etc., water containing an antiseptic is added, and the infection-borne mosquito of the present invention is added by a known method. A mosquito coil for control was obtained.

[25m3の部屋での実地効力試験]
タイ国のデング熱が発症した各地からネッタイシマカを採集し、累代飼育後実地効力試験に供した。閉めきった25m3の部屋に供試ネッタイシマカの雌成虫100匹を放った後、部屋の中央に点火した供試蚊取線香(実施例1に準じて調製)を置いた。2時間暴露させ、時間経過に伴い落下仰転したネッタイシマカ雌成虫を数え、KT50値を求めたところ表1のとおりであった。
[Practical test in 25m 3 room]
Aedes aegypti were collected from various places where dengue fever developed in Thailand and were subjected to field efficacy tests after successive breeding. After releasing 100 female adults of the test Aedes aegypti in a room of 25 m 3 which was closed, a test mosquito coil (prepared according to Example 1) was placed in the center of the room. 2 hours exposed, counted Aedes aegypti females dropped Osshaten with time was shown in Table 1 was determined the KT 50 values.

Figure 0005289008
Figure 0005289008


試験の結果、天然ピレトリンを0.6〜1.5質量%含有し、しかも、効力増強剤Aを有効成分量に対して0.3〜3.0倍量配合した本発明の蚊取線香は、同濃度の天然ピレトリン単独線香に較べて、KT50値の指標で示されるノックダウン効果が1.7〜1.9倍増強した。特に、ピレスロイド系殺虫成分に対する感受性が低下し、d−アレスリン0.5%線香では全く効果が認められないG地区採集コロニーやBSコロニーに対しては、本発明の蚊取線香のみ、KT50値が100分以下の実用的なノックダウン効果を示し、感染症媒介蚊のネッタイシマカ防除に極めて有効であることが認められた。
これに対し、天然ピレトリン単独線香か、効力増強剤Aを配合しても有効成分量に対して0.3倍量未満の場合は、効力が低かった。また、天然ピレトリンの配合量が1.5質量%を超えると、効力増強剤Aを有効成分量に対して0.3〜3.0倍量配合しても効力増強効果がそれほど大きくなく、コストメリットを伴わなかった。
効力増強剤Aにおけるこのような傾向は、有効成分が4−メトキシメチル−2,3,5,6−テトラフルオロベンジル 2,2,3,3−テトラメチルシクロプロパンカルボキシレートの特許文献1や、有効成分が(S)−2−メチル−4−オキソ−3−(2−プロピニル)−2−シクロペンテニル (1R)−トランス−クリサンテマートの特許文献2のケースと全く異なるものであった。
As a result of the test, the mosquito coil of the present invention containing natural pyrethrin in an amount of 0.6 to 1.5% by mass and further containing the potentiator A in an amount of 0.3 to 3.0 times the amount of the active ingredient is Compared with natural pyrethrin single incense at the same concentration, the knockdown effect indicated by the index of KT 50 value was enhanced 1.7 to 1.9 times. In particular, sensitivity is lowered against pyrethroid insecticidal ingredient, with respect to the G area harvested colony or BS colonies not observed at all effective in the d- allethrin 0.5% incense, only mosquito coils of the present invention, KT 50 value Showed a practical knockdown effect of 100 minutes or less, and was found to be extremely effective in controlling Aedes aegypti against infection vector mosquitoes.
On the other hand, even if natural pyrethrin single incense stick or potency enhancer A was added, the potency was low when the amount was less than 0.3 times the amount of the active ingredient. In addition, when the blending amount of natural pyrethrin exceeds 1.5% by mass, the potency enhancing effect is not so large even if the potency enhancing agent A is blended in an amount of 0.3 to 3.0 times the amount of the active ingredient, and the cost There was no merit.
Such a tendency in the efficacy enhancer A is shown in Patent Document 1 in which the active ingredient is 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate, The active ingredient was completely different from the case of Patent Document 2 of (S) -2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (1R) -trans-chrysanthemate.

本発明は、蚊取線香の製造販売分野において、須らく利用可能である。 The present invention can be used in the field of manufacturing and selling mosquito coils.

Claims (1)

有効成分として、天然ピレトリンを0.8〜1.2質量%含有し、かつ、効力増強剤として、N−(2−エチルヘキシル)−ビシクロ[2,2,1]−ヘプタ−5−エン−2,3−ジカルボキシイミドを、有効成分量に対して0.3〜3.0倍量配合してなり、ネッタイシマカを防除することを特徴とする感染症媒介蚊防除用蚊取線香。 It contains 0.8 to 1.2 % by mass of natural pyrethrin as an active ingredient, and N- (2-ethylhexyl) -bicyclo [2,2,1] -hept-5-ene-2 as an efficacy enhancer. , 3-dicarboximide, Ri Na formulated 0.3-3.0 times the amount of the active ingredient, mosquito coils for infection mosquito control, wherein control to Rukoto the Aedes aegypti.
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