Ant bait material and extraction method therefor

Abstract

To provide an ant bait material and an extraction method therefor.SOLUTION: The ant bait material comprises a tea leaf extract 11, an attractant 12, and water 13, wherein the tea leaf extract 11 is 0.1-0.3 wt.%, the attractant 12 is 7.5-13.5 wt.%, and the water 13 is 86.2-92.4 wt.%. The tea leaf extract 11 serves as an active ingredient of the ant bait, which is a natural component, is friendly to the environment and to humans and animals, and exhibits rapid pharmacological action.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a production system, and more particularly to an ant bait material and a method for extracting the same. [Background technology]

[0002] In recent years, the damage caused by ants has become increasingly serious. For example, the number of colonies of the genus Pyrophorus ant has increased dramatically in central and southern Taiwan in recent years, not only having a serious impact on the lives of citizens but also making it difficult to harvest crops. The coastal areas of southern Taiwan are home to red fire ants that harm land crabs.

[0003] There are currently many products on the market that can eradicate ants, but the long-acting effects of most common chemicals pose a risk of poisoning if children or pets accidentally ingest them. Therefore, there is room for improvement in conventional ant baits. Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned prior art has a drawback in that the drugs have a long acting effect, which may cause poisoning if children or pets accidentally ingest them. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, the present invention provides an ant bait material containing tea leaf extract as an active ingredient, and a method for extracting the same.

[0006] The ant bait material according to the present invention comprises tea leaf extract, an attractant, and water. The weight percentage of the tea leaf extract is 0.1-0.3%, the weight percentage of the attractant is 7.5-13.5%, and the weight percentage of the water is 86.2-92.4%, each weight percentage being calculated relative to the ant bait material.

[0007] In one embodiment, the present invention provides a method for extracting ant bait material, comprising: The method includes the following steps: mixing 5% to 10% by weight of tea leaves with 70% to 85% by weight of ethanol to form a first mixed solution, and boiling it in an airtight state; Then, the extract is obtained by heating and concentrating it through atmospheric distillation. Add 5% to 20% by weight of calcium oxide to the extract to form a second mixed solution; Heating the second mixture at a low temperature until the solvent in the second mixture has completely evaporated and the mixture remains, and grinding the mixture into a powder; The mixture is further purified by atmospheric sublimation to obtain the tea leaf extract.

[0008] As described above, the present invention uses tea leaf extract as an active ingredient for killing ants, and furthermore, the extraction is carried out using natural tea leaves, which not only reduces environmental pollution compared to chemical agents, but also allows the active ingredient in the tea leaf extract to kill ants quickly and with a short duration of action, thereby effectively controlling the ant population. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a structural block diagram of an ant bait material according to the present invention. [Figure 2] 1 is a block flow chart of a method for extracting ant bait material in accordance with the present invention. [Figure 3] 1 shows the results of a pesticide test in which the ant bait of the present invention was used to treat solacic ants of the genus Hardy Ant. [Figure 4] 1 shows the results of a pesticide test in which the ant bait of the present invention was used to treat fire ants. DETAILED DESCRIPTION OF THE INVENTION

[0010] (One embodiment) To make the above and other objects, features, and advantages of the present invention clearer and more easily understandable, the following detailed description will be given of embodiments of the present invention in conjunction with the accompanying drawings.

[0011] As shown in FIG. 1, the ant bait material 10 according to the present invention comprises tea leaf extract 11, an attractant 12, and water 13. The weight percentage of the tea leaf extract 11 is 0.1-0.3%, the weight percentage of the attractant 12 is 7.5-13.5%, and the weight percentage of the water 13 is 86.2-92.4%. Each weight percentage is calculated relative to 10 parts of the ant bait material.

[0012] The preferred weight percent ratio of tea leaf extract 11, attractant 12, and water 13 is 0.5%:10.5%:89%.

[0013] The attractant 12 is monosodium glutamate (MSG) or sucrose.

[0014] As shown in FIG. 2, a method for extracting ant bait material 10 according to one embodiment of the present invention includes the following steps.

[0015] Step S1: Mix 5% to 10% by weight of tea leaves and 70% to 85% by weight of ethanol to form a first mixed solution, which is then boiled in an airtight state.

[0016] Step S2: Then, the extract is heated to 70°C to 135°C by atmospheric distillation, and the extract is obtained after concentration, and the concentrated volume of the extract is 1 / 6 to 1 / 4 of the volume unit of the added ethanol. In other words, the concentrated volume of 100ml of ethanol is 16 to 25ml.

[0017] Step S3: Add 5% to 20% by weight of calcium oxide to the extract to form a second mixed solution.

[0018] Step S4: The second mixture is heated at a low temperature of 70°C to 135°C until the solvent in the second mixture is completely evaporated and the mixture is left behind, and the mixture is ground into a powder.

[0019] Step S5: The mixture is further purified by atmospheric pressure sublimation to obtain tea leaf extract 11.

[0020] An embodiment of the manufacturing is as follows. [Tea Leaf Extract 11 Manufacturing Process] Ingredients: 10g tea leaves, 100ml ethanol, 6g calcium oxide. Equipment: Soxhlet extractor, reflux condenser (using spherical condenser tube), atmospheric pressure sublimation apparatus, evaporating dish, long-neck funnel, glass polisher, cotton gauze, filter paper, plastic wrap, electric heating device.

[0021] Steps: Ethanol reflux extraction: First, place 10g of tea leaves in a 250ml round-bottom flask and add 100ml of ethanol. After attaching it to the reflux condenser, check the airtightness and then heat and boil it for 40 minutes. The degree of airtightness is determined by using a dropper to drip distilled water onto the connection points of each glass vessel, and if no clear gas appears, it is determined that the vessel is airtight.

[0022] Atmospheric distillation concentration: The refluxed extracted liquid is filtered, heated to 70℃-135℃, and the extract is concentrated to 20ml. The extraction heating temperature is 70°C, 73°C, 75°C, 77°C, 80°C, 83°C, 85°C, 87°C, 90°C, 93°C, 95°C, 97°C, 100°C, 103°C, 105°C, 107°C, 110°C, 113°C, 115°C, 117°C, 120°C, 123°C, 125°C, 127°C, 130°C, 133°C or 135°C.

[0023] Acid-alkali neutralization extraction: Place the concentrate in a ceramic evaporating dish and add 6g of calcium oxide.

[0024] Preparation of tea leaf powder: After acid-alkali neutralization, the extract is placed on a heating plate and heated at a low temperature of 55-67°C. In this experiment, the extract is heated to 60°C, and after the solvent has completely evaporated, it is ground into powder using a mortar and pestle. The low temperature is 55°C, 56°C, 57°C, 58°C, 59°C, 60°C, 61°C, 62°C, 63°C, 64°C, 65°C, 66°C or 67°C.

[0025] Atmospheric pressure sublimation: After ethanol evaporation, impurities remain on the material, so they must be further separated and purified using atmospheric pressure sublimation and temperature changes to convert from a solid state to a gaseous state. After grinding, the solid powder is evenly placed in an evaporating dish, the dish is covered with filter paper with many small holes, and finally the evaporating dish is covered with a short-necked funnel, the end of which is stuffed with a little cotton. Care is taken to control the temperature between approximately 115°C and 200°C. The material to be extracted is then coagulated to produce tea leaf extract 11. The temperature is controlled to 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C, 170°C, 175°C, 180°C, 185°C, 190°C, 195°C or 200°C.

[0026] [Bait test] Test 1: Sclerotinia sclerotia Each test group contains 100 worker ants and 3 queen ants, kept in an artificial rearing box, rested for three days, and starved. Approximately 5 grams of the new bait (containing 0.5% wt / wt tea leaf extract, 10.5% wt / wt attractant, and 89% wt / wt water) was placed in an artificial rearing box within the test group ant colony, allowing the colony to feed on it at will during the test period (n=3). A portion of the control ant colony was given approximately 5 grams of non-toxic artificial diet (n=3). After the bait / artificial feed is placed, observation of the survival status of the worker ants and queen ants begins the next day, and the numbers are counted daily, with dead individuals removed and recorded. Observation will cease after all workers and queens in the test group have died. At the end of the study, the mean cumulative mortality rate is calculated.

[0027] Test 2: Long-legged fire ant Each test group contains 150 workers and one queen, kept in an artificial enclosure, rested for three days, and starved. The bait efficacy test method and recording method are the same as those for the genus Pyrophorus. Test results: After ingesting the new bait, worker ants (Common ants of the genus Pyrophorus and Pyrophorus) began to show signs of convulsions and died within a short time.

[0028] As shown in Figure 3, in the case of the ant Solasicidae of the genus Compostella, all worker ants in the test group reached a 50% mortality rate one day after feeding on the chemical, and the average cumulative mortality rate reached approximately 63.3%. The median lethal time (LT50) of worker ants was 0.82 days (Probit analysis), and almost all of them died after three days. The mean cumulative mortality rate between the test group and the control group was significantly different from the first day (t-test, P<0.001).

[0029] As shown in Figure 4, in the case of the red fire ant, all worker ants in the test group reached a 50% mortality rate two days after feeding with the drug, and the average cumulative mortality rate reached approximately 89.9%. The median lethal time (LT50) of worker ants was 1.12 days (Probit analysis), and almost all of them died after three days. The mean cumulative mortality rate between the test group and the control group was significantly different from the first day (t-test, P<0.001).

[0030] All queens in the test colonies, whether they were P. solacicus or P. sieboldiana, died within seven days.

[0031] Conclusion: The new type of ant bait, whose active ingredient is tea leaf extract 11, has a significant lethal effect on both the genus Hardy ant, Psorbiculatus ant, and the ant, Psorbiculatus striata. Worker ants that ingest the bait die from the poison within a short time and carry the bait back to the nest through trophallaxis, which has the effect of wiping out the entire nest. In the future, the ant bait material 10 of the present invention may also be applicable to species of ants that feed on liquid food.

[0032] As mentioned above, the advantages of the present invention are as follows: 1. High insecticidal effect: The present invention can quickly kill ants using the active ingredients in the tea leaf extract 11, which is effective in controlling the ant population. 2. Eco-Friendly: The tea leaf extract 11 of the present invention is an extract of natural plants, and will not pollute or harm soil, water sources or other living organisms during use, making it eco-friendly. 3. Low cost: Tea leaves are a common natural resource and are easy to obtain, so the cost of preparing tea leaf extract 11 is relatively low.

[0033] Finally, the embodiments in the present invention are merely used to explain the embodiments of the present invention in principle, and other variations also fall within the scope of the present invention. Thus, it is intended to be illustrative and not limiting, and permutations of the embodiments of the present invention are contemplated as being consistent with the teachings of the present invention. That is, embodiments of the present invention are not limited to those specifically shown and described.

[0034] The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the scope of protection provided by the present invention is determined by the following claims. [Explanation of symbols]

[0035] 10 Ant bait materials, 11 Tea leaf extract, 12 attractants, 13 water, 14 Preservatives, Steps S1~S5.

Claims

1. An ant bait material comprising tea leaf extract, an attractant, and water, The weight percentage of the tea leaf extract is 0.1-0.3%, The weight percent of the attractant is 7.5 to 13.5%; the weight percent of the water is 86.2 to 92.4%; Each weight percentage is calculated relative to the ant bait material. characterized in that Ant bait material.

2. The preferred weight percent ratio of the tea leaf extract, the attractant, and the water is 0.5%:10.5%:89%. characterized in that The ant bait material of claim 1.

3. The attractant is monosodium glutamate (MSG) or sucrose. characterized in that The ant bait material of claim 1.

4. The method for extracting ant bait materials according to claim 1 includes the following steps: A. Mix 5% to 10% by weight of tea leaves with 70% to 85% by weight of ethanol to form a first mixed solution, and boil it in an airtight state; B. Then, the extract is obtained by heating and concentration by atmospheric distillation. C. Adding 5% to 20% by weight of calcium oxide to the extract to form a second mixed solution; D. Heat the second mixture at low temperature until the solvent has completely evaporated and the mixture remains. E. Further purifying the mixture by atmospheric sublimation to obtain tea leaf extract. characterized in that Method for extracting ant bait material.

5. In the method for extracting the ant bait material, after obtaining the mixture, the mixture is ground into a powder. characterized in that 5. A method for extracting an ant bait material according to claim 4.

6. The volume of the extract is concentrated to 1 / 6 to 1 / 4 of the volume of the added ethanol. characterized in that 5. A method for extracting an ant bait material according to claim 4.

7. The heating temperature for the atmospheric distillation is 70°C to 135°C. characterized in that 5. A method for extracting an ant bait material according to claim 4.

8. The heating temperature of the low-temperature heating is 55°C to 67°C. characterized in that 5. A method for extracting an ant bait material according to claim 4.

9. The preferred heating temperature for the low-temperature heating is 60°C. characterized in that 5. A method for extracting an ant bait material according to claim 4.

10. The temperature of the atmospheric pressure sublimation is controlled to 115°C to 200°C. characterized in that 5. A method for extracting an ant bait material according to claim 4.

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