JP2008137987A - Base material for incense stick - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base material for incense stick, excellent in stable supply, economical efficiency and mechanical molding suitability, having physical properties capable of increasing the volatility of pyrethroid of an insecticidal component in fumigation, having conditions as the base material for incense stick, for example, generating smoke causing neither stimulation nor nasty smell, and capable of replacing pyrethrum extract lees or wood flour. <P>SOLUTION: The base material for incense stick capable of attaining the problems is provided by drying extract lees of green tea and/or half-fermented tea, grinding the dried to obtain a powder and using the powder as a part of raw materials. And a mosquito-repelling incense stick and a fly-repelling incense stick are provided by using the base material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an improved incense base material.

Mosquito coils are familiar for over 100 years as insecticides for combating mosquitoes. They are very reasonable because they maintain the spatial treatment in time with a single match and remain constant until burned out. Insecticidal form. In 1902, a spiral-type mosquito coil was invented in Japan, but the raw material was a mixed powder containing pesticide chrysanthemum dried flower powder (60-80%) and bamboo leaf powder (20-40%) as a binder. Thus, water was added to the mixture and kneaded to produce a spiral shape. This product was later used as a necessity for malaria control during World War II.
On the other hand, synthetic pyrethroids with similar structures have been developed based on the elucidation of the chemical structure of the insecticidal component (pyretrin) contained in the insecticide chrysanthemums. Among them, allesrin, which was invented in 1947, has a chemical structure very similar to that of pyrethrin. In 1953, when it reached industrialization in Japan and the United States, it became used as an active ingredient for mosquito coils.
As the base material of mosquito coils, wood powder, insecticide chrysanthemum extract cocoons and the like have so far occupied most of them. Insecticidal chrysanthemum extracted soot powder is an excellent raw material for incense as a base material for incense, because it has little irritation and off-flavor when burned, has mechanical molding suitability in the kneading, extrusion and punching processes. However, since the demand for pesticide chrysanthemum extract has shifted to synthetic pyrethroids, the production of cocoon powder has decreased significantly, and due to concerns about stable supply, there is a limit to the amount of mosquito coils that can be produced in large quantities. It was.
On the other hand, wood flour such as pine, cedar and cypress is inexpensive because it pulverizes wood chips and chips that are by-produced during lumber production, but it is cheap, but the type of raw material tree, locality, age, part of tree, Due to the difference in processing steps and the like, the properties of the powder change variously, so it is difficult to obtain a powder of a certain quality. In addition, when incense was prepared using only raw materials of wood flour and binder, it was found that the physical properties of the incense became dense and the volatilization rate of the active ingredient was lowered, resulting in inferior insecticidal efficacy. Further, when a large amount of wood powder is used, there is a concern of causing problems such as irritation and off-flavor during combustion, or excessive smoke generation.
Accordingly, attempts have been made to search for a substrate for mosquito coils other than the insect repellent chrysanthemum extract and wood powder, but the substrate for mosquito coils has to satisfy the following conditions.
(1) to maximize the effectiveness of the active ingredient,
(2) To be supplied inexpensively and stably,
(3) Having excellent machine molding aptitude in the kneading, extrusion, and punching processes;
(4) The manufactured incense stick does not disappear during combustion, and the combustion time can be easily adjusted to about 7 hours,
(5) The smoke is not irritating and does not give off an odor.
For example, Japanese Patent Publication No. 46-27839 (Patent Document 1) uses a hop squeezed rice cake used for brewing beer, Japanese Patent Publication No. 61-11921 (Patent Document 2) contains a sweet potato fermented rice cake powder. In addition, Japanese Patent Publication No. 61-23762 (Patent Document 3) proposes to use a dry powder of false acacia leaves. However, none of the above conditions can sufficiently satisfy the above conditions, and even if it comes to practical use, it is currently limited to a small amount.
In recent years, the occurrence of flies has decreased in urban areas, but there are more opportunities to suffer more than ever in the surroundings of fishing villages, seafood processing plants, garbage disposal sites, livestock barns, and poultry houses. As a countermeasure, the demand for fly-cranking incense for space treatment is increasing, and there is a demand for examination of base materials including not only mosquito coiling incense but also fly-cranking incense.
By the way, about the application to the incense base material of foliage plants, such as tea, there exists description that patent document 2 can be used as a flame retardant, for example. However, the ground powder of tea leaves used for tea bags at that time is expensive and has a specific odor, so even if it is used as an incense stick base material, only a small amount is blended, based on the type and properties of tea. Its suitability was not a special consideration. In recent years, the use of tea bags as tea beverages has been reduced, and extracted tea filled in PET bottles and marketed in vending machines has become popular. In view of the present situation, the present inventors have focused on the effective use of tea extractives and examined the use of the tea incense base material.

Japanese Patent Publication No.46-27839 Japanese Examined Patent Publication No. 61-11921 Japanese Patent Publication No.61-23762

The present invention is excellent in stable supply, economical efficiency and machine molding suitability, has physical properties that can increase the volatilization rate of pyrethroid, an insecticidal component, and does not cause irritation or off-flavor. It aims at providing the base material for incense which has the conditions as a base material for use, and can be changed into an insecticide chrysanthemum extraction basket and wood flour.

That is, in order to solve the above problems, the present invention adopts the following configuration.
(1) A base material for incense that contains a powder obtained by drying and pulverizing green tea and / or semi-fermented tea extract as a part of the raw material.
(2) A mixed and extracted koji of green tea and semi-fermented tea, comprising 10% or more of semi-fermented tea.
(3) An incense stick containing the incense stick substrate according to any one of (1) and (2) as a part of the raw material.
(4) The incense stick according to (3), wherein the incense stick is a mosquito coil or incense stick.

The base material for incense stick of the present invention is excellent in stable supply property, economical efficiency and machine molding suitability, and has physical properties capable of increasing the volatilization rate of pyrethroid, which is an insecticidal component, in addition to smoke, and the smoke smoke has irritation and off-flavor. It has the conditions as a base material for incense sticks, such as not emitting, and can be converted into a pesticide-extracted chrysanthemum or wood flour, so its practicality is extremely high.

The above (1) of the present invention is characterized in that a powder obtained by drying and pulverizing green tea and / or semi-fermented tea extract is selected as a base material for incense.
Tea is roughly classified into three types: green tea (non-fermented tea), semi-fermented tea, and fermented tea, which are classified according to the extent to which oxidative fermentation of tea leaf catechins is promoted.
Green tea (non-fermented tea) is a tea leaf that is first processed by steaming, frying, or simmering the leaf oxidase. And bancha.
Semi-fermented tea is first exposed to the sun for a while, then the tea leaf temperature is raised and the amount of aromatic components contained in the tea bud is increased by the action of the enzymes in the leaf. Then, it is dried by direct flame or hot air. Semi-fermented teas include baked teas that are lightly oxidatively fermented with tea leaf catechins and moderately advanced oolong teas. The former baked tea is characterized by its high fragrance and is made mainly in Taiwan, while the latter oolong tea is inferior to the former in terms of fragrance, but has a strong taste and is mainly produced in China and Taiwan. ing.
The inventors of the present invention are able to obtain green tea and semi-fermented tea extract at low cost, reduce the specific odor compared to the ground powder of tea leaves themselves, and prepare a more incense stick more porous than the raw material of wood powder alone As a result, the inventors found for the first time that the conditions for the incense stick base material were satisfied, such as being able to contribute to the improvement of the volatilization rate of the active ingredient, and completed the present invention. The green tea and the semi-fermented tea may be mixed extraction koji, and by containing 10% or more of the semi-fermented tea, it is useful for stimulating other types of base materials and reducing odors. It is preferable.
The blending amount of green tea and / or semi-fermented tea in the incense of the incense may be appropriately determined in the range of 5 to 50% by mass in consideration of the type and use of the incense, the procurement status of raw materials, and the like.
In addition, fermented tea (black tea) is obtained by completely fermenting tea leaves and drying them, and the extracted powdered flour is more suitable as an incense base material than the extracted tea of green tea and / or semi-fermented tea. There wasn't. The clear reason is unknown, but it seems to be related to the complete oxidative fermentation of tea leaf catechins.
The mosquito coil incense stick and the fly picking incense blended with the incense stick base material of the present invention contain about 0.01 to 0.5% by mass of an active ingredient in consideration of insecticidal efficacy against the target pests, economic efficiency, and the like. Examples of such active ingredients include allethrin, praretrin, pyrethrin, framethrin, transfluthrin, metfurthrin, empentrin, 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2,3,3-tetramethylcyclopropane Various pyrethroid insecticide components such as carboxylate (hereinafter referred to as Compound A) or any isomers thereof are suitable, but not limited thereto.
The incense stick is N- (2-ethylhexyl) -bicyclo [2,2,1] -hept-5-ene-2,3-dicarboximide (hereinafter referred to as efficacy enhancer A) as an efficacy enhancer. ) In an amount of 0.1 times or more, preferably 2.0 times or more of the amount of the active ingredient. This is because when the potency enhancer A is used in combination with an active ingredient in an appropriate amount, the active ingredient is most efficiently vaporized by a kind of steam distillation together with water and potency enhancer A contained in the incense, and diffusion is promoted. This is because a remarkable synergistic effect can be achieved in combination with the effect of enhancing the physiological effects of insects.
What is mix | blended with the base material for incense sticks of this invention has a binder and another kind of flame retardant, and tab powder, starch, methylcellulose, carboxymethylcellulose etc. are mention | raise | lifted to the former binder. Other types of flame retardants include pesticide chrysanthemum extract powder, wood powder, citrus skin powder, dried powder of black acacia leaves, plant powders such as coconut shell powder, and inorganic substances such as diatomaceous earth, gemlite, and ash A powder etc. can be illustrated.
The incense stick may contain a pigment, 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.
Furthermore, as long as the gist of the present invention is not hindered, a bactericidal agent, an antibacterial agent, a repellent, a fragrance, a deodorant and the like can be mixed to obtain a multipurpose composition having excellent efficacy.
In preparing an incense stick using the incense stick base material of the present invention, no special technique is required and a known production method can be employed. For example, water is added to a mixture of premix powder (a mixture of active ingredients, efficacy enhancers, etc. as part of the flame retardant) and the remaining incense base, and then kneaded. After molding by a punching machine, it can be dried to produce a mosquito coil or incense stick. Moreover, after molding using only the incense stick substrate, a liquid agent containing an active ingredient or the like may be sprayed or applied thereto.
Incense sticks using the base material for the incense stick of the present invention are effective against mosquitoes such as Culex mosquitoes, Culex mosquitoes, Aedes mosquitoes, Aedes albopictus, Anopheles mosquitoes, etc. It is also effective for sanitary pests such as cockroaches and indoor dust mites, and various pests such as chironomid and abu, and its practicality is extremely high.

dl, d-T80-alleslin (0.3 parts) and potency enhancer A (0.6 parts), incense base material 99.1 parts (green tea extraction powder 10 parts, oolong tea extraction powder 10 parts, pesticide extraction Mosquito trap according to the present invention is added by a known method after uniformly mixing with 25 parts of powder, 32 parts of wood powder and mixed powder comprising a binder such as powder and starch) and adding water containing colorant and preservative. An incense stick was obtained.

Compound A (0.15 part), potency enhancer A (0.3 part), and 0.1 part of 2,6-ditertiarybutyl-4-methylphenol were added to an incense base material 99.45 parts (packaging). After mixing uniformly with 25 parts of seed tea extraction powder, 20 parts of coconut shell powder, 30 parts of wood powder, flour, starch, etc., water containing preservatives is added and according to the present invention by a known method. I got a fly-taking incense stick.

According to Example 1, mosquito coils with the formulations shown in Table 1 were prepared.
That is, 100 parts of mixed incense powder excluding malachite green was added and thoroughly mixed with 100 parts of water containing malachite green as a coloring agent and preservative, and then a spiral mosquito coil was obtained by a known method. .

Table 2 shows the results of measuring various characteristics of each mosquito coil produced according to Table 1.
The insecticidal efficacy and smoke time of mosquito coils were evaluated according to the following criteria.
[Practical insecticidal efficacy test in a 25m3 room]
After releasing 100 female adult mosquitoes in a closed room of 25 m 3, a test mosquito coil (prepared according to Example 1 or 2) was placed in the center of the room. The female mosquitoes that were exposed for 2 hours and fallen over time were counted, and the KT50 value was determined.
[Smoke time]: Long;> 7 hours 30 minutes, standard; 6 hours 30 minutes to 7 hours 30 minutes,
Short; <6 hours 30 minutes.

As a result of each test, the mosquito coil using the powder obtained by drying and crushing the green tea and / or semi-fermented tea extract as the base material for the incense stick has an insecticidal effect, a machine It was excellent in molding suitability and smoke time characteristics, and there was no problem of irritation or specific odor when smoked. In addition, the incense of this invention 4 was recognized by the potency enhancer A being mix | blended, and the remarkable enhancement of insecticidal efficacy was recognized. Therefore, the extracted tea powder of green tea and / or semi-fermented tea can be used as a substitute for the insecticidal chrysanthemum extracted powder that is concerned in terms of stable supply of raw materials.
On the other hand, as in Comparative Example 1, when trying to replace the pesticide-extracted chrysanthemum powder with wood flour or the like, an increase in the binder is unavoidable, the incense stick becomes dense and the active ingredient volatilization rate is reduced, and the insecticidal efficacy is increased. Incurred a decline. Moreover, as shown in Comparative Example 2, the black tea powder extracted from black tea, which is a completely fermented tea, has a specific odor, and was not as suitable as the green tea and / or semi-fermented black tea as an incense base material. . In addition, since green tea leaf pulverized powder is used for beverages, it was inferior in economic efficiency as a base material for incense sticks, and practical application was difficult.

According to Example 2, fly incense sticks having the formulations shown in Table 3 were prepared.
That is, 100 parts of mixed incense powder was added with 100 parts of water containing an antiseptic and sufficiently kneaded, and then a spiral fleece incense stick was obtained by a known method.

* Compound A: 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate

Table 4 shows the results of measurement of various characteristics of each fly incense stick manufactured according to Table 3. The standard of smoke time was the same as that of mosquito coils.
[Practical insecticidal efficacy test in a 25m3 room]
After releasing 100 adult house flies in a closed 25 m 3 room, a test fly-collecting incense stick (prepared according to Example 2) was placed in the center of the room. The adult housefly that had been exposed for 3 hours and fell down over time was counted, and the KT50 value was determined.

As a result of each test, the fly picking incense using the powder obtained by drying and pulverizing the extract of green tea and / or semi-fermented tea as the base material for the incense stick, the insecticidal efficacy, the machine It was excellent in molding suitability and smoke time characteristics, and there was no problem of irritation or specific odor when smoked. Therefore, the extracted tea powder of green tea and / or semi-fermented tea can be used as a substitute for the insecticidal chrysanthemum extracted powder that is concerned in terms of stable supply of raw materials.
On the other hand, as in the case of the mosquito coil incense in Example 3, when the pesticide extracted chrysanthemum powder was replaced with wood flour or the like as in Comparative Example 1, an increase in the binder was inevitable, and the incense was dense. As a result, the volatilization rate of the active ingredient was reduced and the insecticidal efficacy was lowered. Moreover, as shown in Comparative Example 2, the black tea powder extracted from black tea, which is a completely fermented tea, has a specific odor, and was not as suitable as the green tea and / or semi-fermented black tea as an incense base material. .

The present invention can be used in the field of manufacturing mosquito coils and flies.

Claims (4)

A base material for incense, comprising a powder obtained by drying and pulverizing green tea and / or semi-fermented tea extract as a part of the raw material. The mixed extract koji of green tea and semi-fermented tea, comprising 10% or more of semi-fermented tea, the incense base material according to claim 1. An incense stick comprising the base material for incense stick according to claim 1 as a part of a raw material. The incense stick according to claim 3, wherein the incense stick is a mosquito coil or an incense stick.