RU2228029C2 - Repellent and method for scaring insects away from food products, tobacco or other consumed products - Google Patents

Abstract

FIELD: food products protection. SUBSTANCE: repellent contains composition to scare away insects that is in contact interaction with a bottom plate obtained due to applying the above-mentioned composition onto this bottom plate. This composition has got chemical compound in the quantity being nontoxic for people and animals at releasing. The method for scaring away insects deals with applying the repellent to the place where insects may be. Composition of preparation for scaring insects away contains repellent's chemical compound and substance that regulates releasing and contains chemical compound which could be either synthetic and/or natural and, possibly, a solvent. Chemical compound for scaring insects could be taken out of the group consisting of essential oils and their active ingredients. Repellent should be applied onto packaging material, for example, with food products. Repellent suggested provides high protection of food products not to the detriment of their quality. EFFECT: higher efficiency of protection. 9 cl, 5 dwg, 2 ex, 2 tbl

Description

The invention relates to a device for repelling insects, having controlled isolation of a composition for repelling insects, and a method for repelling insects from food, tobacco or other products.

The device for controlled isolation of the insect repellent composition is safe in contact with consumed products and can be used in any room where insects must be expelled. This device for the controlled isolation of an insect repellent composition is also environmentally friendly.

Chemical compounds are known that kill insects, but very often it is unpleasant for people to come into contact with such compounds. It was found that many of them are toxic to humans and the environment and cannot be used directly or indirectly with food, tobacco and other products. In addition, obtaining permission from the Food and Drug Administration (USA) and the Environmental Protection Agency (USA) may take years. The invention is a device for the controlled isolation of an insect repellent composition containing chemical compounds that are effective in repelling insects, are pleasant for most people in contact with them, and which do not have a harmful effect on the environment. Many of the chemical insect repellent compounds with which the device for controlled isolation of insect repellent composition can be used are already approved for food and medical use.

The invention provides a device for the controlled isolation of an environmentally friendly composition for repelling insects from food, tobacco or other products, which is safe for use with food products, including food products for children, and does not adversely affect people, animals or the environment. The invention also provides a method for repelling insects from food, tobacco or other products by using devices for the controlled isolation of an environmentally friendly insect repellent composition. A device for controlled isolation of an environmentally friendly insect repellent composition comprises an insect repellent composition in contact with the substrate. The device for controlled isolation of an environmentally friendly insect repellent composition is made by a method comprising applying an insect repellent composition to a substrate. The method of repelling insects involves the installation of devices for the controlled isolation of an environmentally friendly composition for repelling insects in a room in which insects can be present. The insect repellent composition used in the device is obtained by mixing the chemical compound of an insect repellent, a release regulating agent, and possibly a solvent to form an intermediate product composition, which is then applied to a substrate and dried, if necessary, to form a composition composition to repel insects. Other additives may also be added, for example binders, additives to control the rate of release and thickeners. The chemical compound of the insect repellent may be selected from the group consisting of essential oils and active ingredients of essential oils. Essential oils are defined as any of the essential (volatile) oils obtained from plants and having a smell and other characteristic properties of these plants. The substance that controls the selection contains a chemical compound, which may be synthetic and / or natural.

A device for controlled isolation of an environmentally friendly insect repellent composition is preferred because it contains only a small amount of the active ingredient in the insect repellent composition, the active ingredient being safe for use with food, tobacco or other consumed products, and the vapor of the active ingredient is pleasant for most people in contact with it. In addition, the device for the controlled release of an environmentally friendly insect repellent composition remains active for the desired period of time, which can be changed up or down. The active ingredient is contained in a device for controlled release of a composition for repelling insects in such an amount that when it is released from the device, it is not toxic to humans and animals.

Advantages of the invention will become apparent from the following detailed description with reference to the accompanying drawings.

Figure 1 shows a sketch of the base used to test the effectiveness of methyl salicylate as a means to repel the barn of southern barn (Plodia interpunctella).

In Fig.2 - the reaction of the barn of the southern barn to methyl salicylate.

Figure 3 - the effect of the impact, corresponding to the present invention, devices for the controlled selection of the composition for repelling insects containing methyl salicylate on the barn southern ump.

Figure 4 is an embodiment according to the present invention of a device for controlled isolation of an insect repellent composition.

Figure 5 is another variant embodiment, corresponding to the present invention, devices for the controlled selection of the composition for repelling insects.

A device according to the invention for controlled isolation of an environmentally friendly insect repellent composition enables the controlled isolation of an insect repellent composition, thus providing an insect repellent device that retains its functionality for a desired period of time and which is safer to use in products which adults, children and animals come into contact with. The device also provides repellent of odorless insects felt by people.

When developing the invention, it was found that the vapor release rate of a chemical compound having the ability to repel insects can be controlled by the introduction of a substance that regulates the release. Mixing the chemical compound of the insect repellent composition with a release control substance in which the active ingredient in the chemical compound of the insect repellent is amenable to mixing allows you to control the vapor release of the active ingredient in some applications due to the affinity of the release control substance with the active ingredient. Changing the relative ratios of the chemical compound for repelling insects and the substance that regulates the release in the composition of the composition for repelling insects and the choice of type, amount and concentration of the active (for example, essential oil) and inactive (for example, substance that regulates the release) ingredient will allow you to more accurately control the speed discharge. In addition, mixing additives with the chemical compound of the insect repellent composition will also improve such regulation. The ability to control the rate of release is an advantage of the device for the controlled release of an insect repellent composition. Regulation of the rate of release increases the duration of the effectiveness of the device for repelling insects, lengthening in accordance with this period of normal operation. The regulation of the release rate also prevents the excessive exposure of the chemical compound to repel insects on products that come into contact or are near this device.

A device for controlled isolation of an insect repellent composition has the additional advantage that it can be used to repel insects from food, tobacco or other consumed products and can be used either in direct or indirect contact with consumed products . In addition, this device can also be used with non-food products, that is, with fabrics and furs. The chemical compound of the insect repellent is contained in such a quantity that it is not toxic to adults, children and animals. Regulation of the rate of release of the chemical compound of the insect repellent composition, when the device for the controlled isolation of the insect repellent composition is in contact with food, will allow insects to be driven away without emitting excessive odors and without changing the taste of the food, problems that are undesirable.

The composition of the insect repellent composition of the present invention is prepared by mixing the insect repellent chemical with a release regulating agent and optionally with a solvent and / or other additives to form an intermediate product mixture and then apply the intermediate product mixture to a substrate. After that, the mixture of the intermediate product is dried, if necessary, to form a composition (composition for repelling insects) on the substrate. The pH of the intermediate mixture that can be used is limited only by the effect on the substrate and coating material. Preferably, the mixture of the intermediate product is dried after application to the substrate. The drying temperature is not important, but the temperature range that can be used is from about -17 ° C to about 315 ° C, preferably from about 37 ° C to about 205 ° C, and most preferably from about 37 ° C to about 150 ° C.

Examples of insect repellent chemicals are essential oils, such as bitter almond oil, anise oil, basil oil, bay oil, caraway oil, cardamom oil, cedar oil, celery oil, common chamomile oil, cinnamon oil, citronella oil, clove oil, coriander oil, cumin oil, dill oil, eucalyptus oil, fennel oil, ginger oil, grapefruit oil, lemon oil, lime oil, peppermint oil, parsley oil, peppermint oil, rose oil, ma lo spearmint oil (menthol), sweet orange oil, thyme oil, tumerikovoe oil and oil of wintergreen (also known as Gaultheria oil). Examples of the active ingredient in essential oils are citronellal, methyl salicylate, ethyl salicylate, propyl salicylate, citronellol, safrole and D-limonene. The preferred chemical compound of the insect repellent composition is an essential oil: parsley oil or its active ingredient methyl salicylate.

The concentration of the insect repellent chemical in the insect repellent composition after the insect repellent composition has been applied and dried on the substrate will be in the range of about 0.1 wt.% To about 80 wt.%, Preferably about from 0.1 wt.% to about 40 wt.%, and most preferably from about 0.1 wt.% to about 20 wt.% (dry matter weight) in the balance of the composition of the insect repellent with amounts of the substance solvent, and / or other additives that did not evaporate during the drying operation.

The release control substance contains a chemical compound that will control the rate of release of the chemical compound of the insect repellent composition. Any chemical compound that is approved for use either in direct or indirect contact with food, tobacco or other consumed products can be used as a substance that regulates the secretion. Examples of a release control agent are both inorganic and organic polymers, including natural, synthetic, and semi-synthetic organic polymers. Examples of these polymers are latex polymers (e.g., styrene polyacrylate and styrene butadiene polymers), soluble acrylates, polyvinyl polymers, sodium alginates, natural resins or hydrocolloids (e.g. gum arabic, sodium alginates, guar and pectin), synthetic resins (e.g. smoked modified resins), polyethylene waxes, wax emulsions, polymer printing pastes (for example, special compositions polymerized by ultraviolet radiation or by electron beam treatment), polymers aqueous foams, adhesives (e.g., cold cure, hot cure, printable, heat curable, ultrasonic curable and reactive and non-reactive laminating adhesives), polymer protective coatings, primers and other natural polymer compositions (e.g. copal, cen and protein). Examples of non-polymeric release control agents that can also be used are non-polymeric printed pastes, non-polymeric water foams, non-polymeric protective coatings and fillers, such as sawdust, clay and zeolites. It is also assumed that you can use other chemical compounds that are not listed above, but which allow you to adjust the rate of release of the chemical compounds of the funds (for repelling insects) from the device.

The release control substance may also contain a solvent and / or additives, for example, binders or dispersants (for example, 2-amine-2methyl-1-propanol). Solvents that can be used to prepare a mixture of the intermediate product are compatible with the chemical compound of the product (for repelling insects) and substances that regulate the release. Examples of solvents are water, alcohols, acetone, ammonia, ether and glacial acetic acid. If the chemical compound used in the release control substance is in a liquid or molten state, then the use of a solvent in the release control substance may not be necessary.

The release control substance should not adversely affect the properties of the substrate (for example, discolor, change the shape or strength of the substrate) or the processing of the substrate (for example, by interacting with an additional coating of the substrate after applying the composition of the insect repellent composition).

The amount of the chemical compound of the insect repellent composition contained in the intermediate mixture before being applied to the substrate to form the composition of the insect repellent composition is in the range of about 0.05 wt.% To about 40 wt.%, Preferably about 0.05 wt. % to about 20 wt.%, and most preferably from about 0.05 wt.% to about 10 wt.% (wet weight). The amount of the chemical compound of the insect repellent contained in the composition (insect repellent composition) after application to the substrate and possible drying is in the range of about 0.1 wt.% To about 80 wt.%, Preferably about 0.1 wt. % to about 40 wt.%, and most preferably from about 0.1 wt.% to about 20 wt.% (dry weight).

Examples of substrate materials onto which the intermediate product mixture can be applied are paper, cardboard, corrugated boxes, as well as individual components such as an outer layer of continuous glued cardboard, a middle layer of corrugated cardboard, plastic, plastic sheet material, fabric, metals, for example aluminum and metallized films on which additional coatings can be applied. Preferably, the substrate is in the form of a container that contains edible products for adults, children and animals. Examples of containers are folding cartons, corrugated boxes, corrugated cartons and boxes, bags, bags, molded fiber, pressed trays, flexible packaging containers, plastic and aluminum packaging containers and wrapping materials. The substrate can also be in the form of an object that must be placed in a room from which insects must be expelled, for example, in the form of a piece of paper, cardboard, plastic or metal, which is placed in a living room, closet or warehouse for storing food.

Examples of methods by which a device for controlled isolation of an insect repellent composition can be coated with a mixture of an intermediate product are methods based on the use of a spray nozzle, a coating stick, a device with a doctor blade for coating, a device for coating using an air scraper , a roll coating device, a multi-roll coating device, a device for controlled and uncontrolled application drops, devices for dipping in a bath, devices for coating by irrigation, as well as devices for impregnation in a vacuum or not in a vacuum. In cases where the device for controlled isolation of the insect repellent composition is made of packaging material, printing may also be used to coat this packaging material. Printing methods that can be used in accordance with the present invention include intaglio printing, flexographic printing, screen printing, letterpress printing, sheet offset printing, web offset printing and inkjet printing.

The rate of vapor release of the active ingredient from the composition of the insect repellent composition can also be controlled by applying a directional barrier to the device (for controlled release of the insect repellent composition). Such a barrier can also regulate the direction in which vapors are released. The barrier material may be part of the substrate or may be applied directly to the upper surface of the device for the controlled release of insect repellents. The barrier can be made of foil or of materials such as a film, for example a multilayer film, paper, coated substrate, or applied liquid coatings, with or without solvent or water. Additional examples of materials for barriers are aluminum foil, paper, polymer film, or laminated structures obtained therefrom. Examples of polymer film materials are polyethylene, polyester, polypropylene, polyvinyl alcohol, ethyl vinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate and the resulting layered structures. The special barriers that were tested were made of aluminum foil, polyethylene, polyester film, polypropylene film and paper. The test paper was coated with both aqueous and other solvent-based coatings.

Examples of insects that this composition can be used to repel are insects such as mites (e.g. European dust mite, Dermatofagoides pteronyssinus, American home dust mites, Dermatofagoides farinae, and earth mites, Tyrophagus putrescentiae), moths and moth larvae (e.g. , southern barn moths, Plodia interpunctella (order: family = lepidoptera: pyralidae)), weevils (e.g. rice weevil, Sitophilus oryzae), beetles (e.g. bean beetle, Callosobruchus chinesis, and Stegobium paniceum beetle) and housefly )

The device for controlled isolation of an insect repellent composition according to the present invention is intended for use to repel insects from food, tobacco or other products. The device for controlled isolation of the insect repellent composition can directly come into contact with food or other consumed products (for example, a box for cereal products for children) or be close to food products (indirect contact, for example, in a cabinet).

Example 1

To test the effectiveness of methyl salicylate as a means to repel moths (southern barn moths) used in the device for controlling the release of insect repellents in accordance with the present invention, an experiment was conducted. The objectives of this study were to evaluate pure (chemically pure) methyl salicylate as an insect repellent, evaluate pH stabilized (chemically pure) methyl salicylate as an insect repellent, and to evaluate two mixtures of uncured (not dried) release regulating agent with 45 % solids (high solids content) and 10% solids (low solids), with two consumption rates of methyl salicylate - (0.1 and 0.2 v / v) as a means insect repellent.

Methods and materials

Efficiency analysis was carried out in plastic Petri dishes (radius 10 cm, height 2.54 cm) having tightly fitted plastic covers (see figure 1). The covers had through vents and were divided into four quadrants with felt markers. The quadrants were assigned numbers 1-4 and processing was always carried out outside the center of quadrant 1.

Whatman No. 1 filter paper having a diameter equal to the inner diameter of the Petri dish was used as the bottom substrate. Whatman No. 1 filter paper was folded in the shape of the letter Z and placed in the middle of the No. 1 quadrant for use as a processing stand. This stand raised the treatment dose by about 1.5 cm above the substrate and facilitated evaporation without direct tactile contact with insects.

At the beginning of each experiment, one of eight treatment compositions (repeated 3-5 times) of 0.5 ml each was pipetted onto a stand, the composition having a content of 0.1 wt.% Methyl salicylate (chemically pure) in ethanol (70 wt. %), 70 wt.% Ethyl alcohol (solvent control), stabilized with respect to pH, 0.1 wt.% And 0.2 wt.% Methyl salicylate in a polymer mixture with a high solids content and a low solids content (= 4 treatments ) or in a polymer mixture with a ratio of high solids content: low solids content (v / v) (polymer control).

Before placing the soaked coasters in a cup, 20 adult moths (southern barn moths) were aspirated from cans, anesthetized with CO _2, and carefully placed in a chamber. Insects were allowed to acclimatize for five minutes at a temperature of approximately 25.6 ° C (78 ° F).

After the treatment composition was instilled onto the stand, the number of moth individuals (southern barn moths) in each of the three other quadrants of the Petri dish was determined at intervals of 1, 5, 10, and 15 minutes. If the composition scared off insects, then more moths were found in quadrants 2, 3, and 4 on average.

All data were recorded, subjected to statistical processing and analyzed. With "no effect" in each quadrant, the average number of moth individuals should be found on average. If repelling takes place, then significantly fewer moles will be found in quadrant 1 (where the treatment should be the strongest) than in other quadrants.

Figure 2 and table 1 shows the results, which are a typical example for all cases where methyl salicylate was used.

Table 1 shows that after 1 minute, the average number of moth individuals found in the treatment quadrant was two, compared to the five individuals found in quadrants 2, 3, and 4. It should be noted that the control distribution of insects between the four quadrants in the average was 4.7 ± 0.62 and did not differ for the control quadrants, but significantly differed (p≤0.05) from the treatment quadrant. This indicates a strong repelling of insects.

After 5 minutes, the deterrence remains strong, with an average of two adult moths found in the treatment quadrant, while five insects were found in the other quadrants.

After 10 minutes of exposure until the end of the test at 15 minutes, adult moths were alive, anesthetized or dead. Obviously, the dose was too high not to cause weakening of the receptor and / or cause death. In table 1 and figure 3 shows a typical average percentage of mortality for all cases in which methyl salicylate was contained either in ethanol or in a substance that regulates the selection. This treatment revealed dying moths after 10 minutes and led to significantly greater insect mortality with an increase in exposure time. After 15 minutes, the average mortality rate was 35%.

Conclusions and Conclusion

Methyl salicylate is a potent agent for deterring adults from the southern barn. This is quite obvious from every experiment and every repetition of the experiment. At a high dose (0.2 v / v), methyl salicylate caused hyperactivity, flutter of the wings, loss of ability to move and, finally, death of moths. At half the dose (0.1 v / v), these symptoms had a time delay and lower intensity, but occurred with each repetition of the experiment.

Chemically pure and pH stabilized methyl salicylate formulations caused higher mortality of moths than polymer formulations. They also cause insects to get used to the product for shorter periods of time than other formulations. This means that polymers slow the release of methyl salicylate to the atmosphere. Thus, the polymer increases the durability of methyl salicylate as a means to repel insects.

In any of the control cases, insect repellent or mortality were not observed. This suggests that neither ethyl alcohol as a solvent of chemical purity methyl salicylate, nor a mixture of a substance that regulates the release, alone with a high solids content and low solids content alone do not cause insect mortality. However, all mixtures and costs of the release control substance with methyl salicylate led to insect mortality.

Example 2

An experiment was conducted to determine the effect of the composition of the insect repellent composition of the present invention on the settlement of packaged cereal products for children (long-grain rice) with moths (southern barn moths). Adult individuals of these insects were attracted by packages of food products in order to lay eggs on them. The larvae hatching from the eggs made holes in the packages, leaving holes that made it possible to influence the environment on food. Feeding on this food product, the larvae grow, dropping their shells (usually 4-5 times), spin silk, go through the pupation stage and turn into adult moths. Larvae of moths will grow inside the packaging of the food product to the pupa, and then to adult moths 1.25 cm (0.5 inches) long.

Life Cycle of the Barn South

Adults ⇒ egg laying ⇒ larvae removal from eggs ⇒ larva growth => spinning of silk ук pupation ⇒ adult

Preparation of insect repellent composition composition

Intermediate products of the compositions of the composition for repelling insects were obtained by mixing a substance that regulates the selection, with a chemical compound means for repelling insects. In some cases, other additives have also been used.

Composition A was prepared by mixing the release control substance with additives in the following proportions: 80% by weight polyacrylate with styrene (release control agent), 10% by weight non-ionic polyethylene wax (binder) and 10% by weight 2% aqueous sodium alginate solution (thickener). The alginate solution had a viscosity of 20 seconds using a Zahn # 3 funnel (i.e., 44 ml of the solution passed (leaked) in 20 seconds through an opening in the bottom of the metal funnel having a diameter of 0.38 cm (0.148 in)), measured with a viscometer Tsana. After that, a mixture of a substance that regulates the release was introduced into a chemical compound (methyl salicylate) of an insect repellent composition and a solvent (deionized water) to form Composition A.

Composition B was prepared by directly mixing a release control substance with a chemical compound of an insect repellent. As a substance that regulates the isolation, a primer manufactured on an industrial basis was used, and the chemical compound of the insect repellent was methyl salicylate.

Compositions A and B received three different concentrations of the chemical compound of the insect repellent. All chemical compounds contained 90 wt.% A mixture of a substance that regulates the release, and 0.5, 2.5 or 5.0 wt.% Of a chemical compound of an insect repellent (wet mass of the substance) and the rest was the rest. The viscosity of the compositions before the introduction of the solvent was measured equal to 18-20 seconds when using a glass of Tsan # 2 (i.e., 44 ml of the solution passed (leaked) in 18-20 seconds through an opening in the bottom of the metal funnel having a diameter of 0.27 cm (0.108 inch)). The pH of the final compositions was between about 9 and about 9.5.

Cardboard Processing

An intermediate product of compositions A and B of the composition for repelling insects on cardboard by two methods: Method A and Method B, respectively, to obtain compositions of the composition for repelling insects on a substrate having three different dry matter mass concentrations (1, 5, and 10 wt. % dry matter weight 0.976 kg of coating / m ² cardboard surface (0.2 pounds / 1000 square feet)). As shown in FIGS. 4 and 5, the substrate consisted of cardboard 1, on which a polyethylene coating 2 was applied on the inside and a clay coating 3 on the outside. Composition 4 of an insect repellent composition was applied to this substrate on either side. Figure 4 shows the result of Method A, in which the composition 4 of the insect repellent composition was applied to the outer clay coating 3 of the cardboard box at approximately the same time as the polyethylene coating 2 was obtained by extrusion on the inner side of the cardboard. Figure 5 shows the result of Method B, in which the composition 4 of the insect repellent composition was applied to the back of the cardboard (i.e., polyethylene was extruded over the composition of the insect repellent). After that, cardboard boxes were made from this cardboard (such as those produced on an industrial basis for cereal products), which have a polyethylene coating applied to the back of the cardboard and clay coating applied to the outside of the cereal box.

After that, cardboard boxes treated with an insect repellent composition were filled with a baby cereal product in the form of long-grain rice and closed using glue.

Testing the Settlement of a Barn South

More than six weeks after the cardboard was treated with the insect repellent composition, the cardboard boxes were exposed to moths (southern barn moths) in a test chamber. The processed boxes were divided into 8 groups: 2 control (untreated) groups of boxes; 3 groups of boxes treated with an insect repellent composition using Method A and 3 groups of boxes treated with Method B. One of the control groups was tested in isolation in a separate chamber, while the other was placed among the groups of boxes subjected to processing.

The difference between the three processed groups of boxes for Method A and Method B consisted in the content of methyl salicylate in the dried coating of 1.5 wt.% And 10 wt.%.

The total population test duration was 8 weeks. From the beginning of the test and at the beginning of each subsequent week, fresh, mature adult moths were introduced into the test chambers. At the beginning of the test, these moths were able to produce larvae (the stage of population of moths) with an estimated ratio of 156 larvae / cardboard box.

We randomly sampled 6 cardboard boxes of each group at 0, 1, 2, 4, 6, and 8 weeks from cardboard boxes that were randomly placed in test chambers. The total number of cardboard boxes was 288, of which 48 were not treated with the insect repellent composition, and the total number of larvae was approximately 37,500.

For each additional new moth, this total number of larvae did not change, while due to sampling the number of cardboard boxes in the test chambers decreased. Thus, in the last week of testing, the ratio of larvae per cardboard box, which increased with each sample, was increased from 156 to 1250. In addition, the cardboard boxes that remained all 8 weeks of testing were exposed to a total of 5600 larvae / cardboard box per the duration of the test.

The gap between the cardboard boxes was approximately 1.3 cm (0.5 inches) during the first week of the test, gradually increasing with each sample to approximately 15.2 cm (6.0 inches) at the end of the test due to the removal of cardboard boxes for selection samples. The conditions in the test chambers were adjusted to simulate conditions in the home cabinet; the temperature was maintained at approximately 25 ± 1.9 ° C (77 ± 3.5 ° F), and the air was completely changed 12 times a day.

Population of cardboard boxes by moth larvae was noted as the percentage of cardboard boxes populated by moth individuals at any stage of development of insect growth, the number of larvae per cardboard box, and whether the development of larval growth was normal at 0, 1, 2, 4, 6, and 8 weeks after exposure to insect. Cardboard boxes were incubated separately in sealed plastic bags for an additional two weeks to allow the larvae to grow so that they were large enough for counting. The results are given in table 2, which is given below.

The results shown in Table 2 show that none of the cardboard boxes were populated during packaging and transportation, as, apparently, due to the lack of settlement at the beginning of the test, which took place about two months after the composition was processed with scaring away insects.

Isolated control cardboard boxes were populated at 33% after the first week of 2-5 normally developed moth larvae per cardboard box. After the second week, the percentage of population doubled and grew to 100% of the population of normally developed moths per cardboard box after the sixth week.

Non-insulated control cardboard boxes, which were located and tested near the processed cardboard boxes, showed 17% of the population of only one, which stopped growing moth larva after the first and fourth weeks, but not after the second week. After the sixth week, cardboard boxes were populated at 17% by one normally developing moth larva. After the eighth week, 83% of the cartons were populated by one normally developed moth per carton. The slower population of control cardboard boxes located near the processed cardboard boxes indicates that the processed cardboard boxes provide some secondary protection for the control cardboard boxes.

Treated boxes were populated by one moth larva that stopped growing after the second and sixth weeks, but were not populated by normally developing moth larvae until the eighth week. In addition, cardboard boxes treated with the insect repellent composition containing the highest concentration of the chemical compound of the insect repellent (10%) contained only moth larvae that stopped growing after the eighth week if they were processed using Method B and did not contain moth larvae, if processed using Method A.

The success of the composition of the means for repelling insects in terms of preventing the settlement of cardboard boxes is noticeable due to several factors. The total population density of larvae (5600 per cardboard box; 156 per cardboard box at the beginning of the test, up to 1250 per cardboard box at the eighth week of the test) was much higher than a packaged food box that would probably be exposed to normal household conditions. In addition, four months have passed since the application of the insect repellent composition on cardboard boxes until the experiment was completed. Finally, it was experimentally established that if moths were first introduced into the test chamber, they tried to leave the chamber, rather than looking for cardboard boxes containing food. Thus, it is likely that the settlement of processed cardboard boxes would be reduced, possibly significantly, if the cardboard boxes were tested shortly after applying the insect repellent composition, the total density of the larvae was in the normal range, moths were not forced to stay close to the cardboard boxes .

Drawing captions

To figure 1:

1 - sketch of the base

2 - processed quadrant

3 - control quadrants

To figure 2:

1 - the number of moths per quadrant

2 - exposure time, minutes

To figure 3:

1 - mortality of moths,%

2 - exposure time, minutes

3 - processed quadrant

4 - control quadrants

Claims (9)

1. Repellent, applied as a coating layer to a protective package to repel insects, mainly from food, tobacco or other consumed products, including a chemical compound containing at least one essential oil, or its active ingredients, or mixtures thereof, in an amount sufficient to repel insects; a substance that regulates the release of said essential oil or its active ingredients; a binder that provides miscibility of said essential oil or its active ingredients, and a solvent, wherein said essential oil or its active ingredients are released from said composition in amounts that are not toxic to humans, characterized in that the chemical compound for repelling insects is selected from the group containing oil of wintergreen, citronellal, methyl salicylate, ethyl salicylate, propyl salicylate; the substance regulating the release of the chemical insect repellent chemical compound is selected from the group consisting of polymers, and the insect repellent compound in the repellent after applying the coating layer to the protective packaging and drying is contained in an amount of from 0.1 to 80 wt.%. 2. Insect repellent according to claim 1, characterized in that a latex polymer is used as a substance that regulates the release of repellent. 3. Insect repellent according to claim 1, characterized in that an acrylic polymer with styrene is used as a substance that regulates the release of repellent. 4. A repellent for repelling insects according to claim 1, characterized in that polyethylene wax is used as a substance that regulates the release of repellent. 5. Insect repellent according to claim 1, characterized in that a polymer protective coating is used as a substance that regulates the release of repellent. 6. Insect repellent according to claim 1, characterized in that polyvinyl polymers are used as a substance that regulates the release of repellent. 7. Insect repellent according to claim 1, characterized in that the coating layer is applied to a protective package selected from the group consisting of paper, cardboard, corrugated boxes, the outer layer of continuous glued cardboard, the middle layer of corrugated cardboard. 8. The insect repellent according to claim 1, wherein the release regulating agent comprises polyacrylate with styrene, the chemical insect repellent compound contains methyl salicylate, the solvent is water, and the insect repellent composition further comprises a non-ionic polyethylene wax. 9. A method of repelling insects from food, tobacco or other consumed products, comprising placing food, tobacco or other consumed products in a protective package with a covering layer of repellent made in accordance with claim 1.

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