Insecticide and preparation method thereof

Abstract

The invention discloses an insecticide and a preparation method thereof, and relates to the field of insecticides, and the insecticide is prepared from the following components by mass: 1-4 parts of perilla seed oil; 0.4 to 0.9 part of linalool; the preparation method comprises the following steps: mixing and uniformly stirring the perilla seed oil and the ethanol to obtain a mixed solution A, mixing and uniformly stirring the linalool and the ethanol to obtain a mixed solution B, and fully mixing and uniformly stirring the mixed solution A and the mixed solution B to obtain the insecticide. The linalool interferes with neurotransmission of insects to achieve insect killing, the perilla seed oil insects have good contact killing and repelling effects, the linalool and the perilla seed oil are combined and compounded, the insect killing advantages of the linalool and the perilla seed oil are fully played, the linalool and the perilla seed oil are combined to achieve a better insect killing effect, drug resistance is not prone to being generated, and the linalool and the perilla seed oil are both prepared from natural plants, so that the linalool and the perilla seed oil are environmentally friendly. The method is environment-friendly and harmless to a human body.

Description

Technical Field

[0001] The present invention relates to the field of pesticides, in particular to a pesticide and a preparation method thereof. Background Art

[0002] To meet the growing population's demand for agricultural products, humans have adopted a series of high-yield and intensive farming measures that provide a suitable environment for the occurrence of pests. Insects are an important group of agricultural pests and one of the main factors causing crop yield reduction.

[0003] Currently, insecticides, particularly chemical insecticides, are the fastest and most effective method for insect control. Chemical control offers advantages such as rapid effectiveness, high efficacy, ease of use, and unrestricted use across regions and seasons, making it suitable for large-scale control. However, while the long-term and extensive use of chemical insecticides has helped control pests and protect human interests, it has also led to a series of serious problems, including harm to humans and environmental pollution.

[0004] Current insect control not only has poor control effects, but also requires the use of different insecticides for different insects, which consumes a lot of manpower, material and financial resources. In addition, the continuous use of insecticides with a single active ingredient is prone to drug resistance, such as insect resistance, which is easy to cause insect resistance and has a relatively simple mechanism of action. Summary of the Invention

[0005] The purpose of this invention is to provide an insecticide and a preparation method thereof.

[0006] To achieve the above object, the present invention provides the following technical solution: an insecticide, which is prepared by configuring the following components by mass: 1-4 parts of perilla seed oil; 0.4-0.9 parts of linalool; and 8-13 parts of ethanol.

[0007] Preferably, it is prepared from the following components in parts by mass: 1 part of perilla seed oil; 0.4 parts of linalool; and 8 parts of ethanol.

[0008] Preferably, it is prepared from the following components in parts by mass: 2 parts of perilla seed oil; 0.7 parts of linalool; and 9 parts of ethanol.

[0009] Preferably, it is prepared from the following components in parts by mass: 3 parts of perilla seed oil; 0.8 parts of linalool; and 12 parts of ethanol.

[0010] Preferably, the perilla seed oil is extracted from perilla seeds, and the perilla seed oil contains: a-linolenic acid (C18H30O2), palmitic acid, linoleic acid, oleic acid, stearic acid, fatty acids, perillaldehyde, carvone, 2-ethylfuran, and caryophyllene.

[0011] Preferably, the linalool is extracted from one or more natural plants of camphor tree, rosewood, coriander, aloe, lavender, eucalyptus A method for preparing an insecticide comprises the following steps: mixing perilla seed oil and ethanol and stirring the mixture to obtain a mixed solution A; Mix linalool and ethanol and stir evenly to obtain a mixed solution B; The mixed solution A and the mixed solution B are fully mixed and stirred to obtain the insecticide.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The prepared insecticide kills insects by interfering with the nerve transmission of insects with linalool, while perilla seed oil has good contact and repellent effects on insects. The two are combined to give full play to the insecticidal advantages of these two substances. The combination of the two can achieve better insecticidal effects, is not easy to produce drug resistance, and is both prepared from natural plants, friendly to the environment, and harmless to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 It is a statistical diagram of experimental data of the present invention; DETAILED DESCRIPTION The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0015] Example 1: This embodiment provides an insecticide, which is prepared by configuring the following components in parts by mass: 1 part of perilla seed oil; 0.4 part of linalool; and 8 parts of ethanol.

[0016] A method for preparing an insecticide, comprising the following steps: mixing perilla seed oil and ethanol and stirring the mixture to obtain a mixed solution A; Mix linalool and ethanol and stir evenly to obtain a mixed solution B; The mixed solution A and the mixed solution B are fully mixed and stirred to obtain the insecticide.

[0017] Among them, by blending perilla seed oil; it is a Chinese herbal medicine and also a natural pesticide. Perilla seed oil is a polyunsaturated fatty acid extracted from perilla seeds. The main components are a-linolenic acid (C18H30O2) 40-70%, palmitic acid (C16H32O2) 10%, linoleic acid C18H32O21.5%, oleic acid (C18H34O2) 7%, stearic acid (C18H36O2) 4%, other fatty acids (C19-C21) 4%, and specific components in perilla seed oil such as perilla aldehyde, carvone, 2-ethylfuran, caryophyllene, etc. It has certain insecticidal and anthelmintic effects, is safe, has no resistance, has no drug residue, and will not pollute or affect the environment. Among them, the ingredient perillaldehyde it contains has very strong contact activity, can produce significant killing effects on insects at lower concentrations, and has a strong repellent effect. Among them, palmitic acid has a certain insecticidal effect. Palmitic acid has a significant effect in the preparation of drugs for killing external parasites of aquatic animals. Ethyl palmitate is also used in plant acaricides and insect disease control preparations, especially in plant acaricides for controlling economic crops such as fruit trees and vegetables and pine wood nematode disease control preparations.

[0018] Linalool is a natural compound that belongs to the chain terpene alcohol class. It is mainly found in natural plants such as camphor trees, rosewood, coriander, aloe, lavender, eucalyptus, etc. Linalool mainly achieves its insecticidal effect by interfering with the nerve transmission of insects. Linalool binds to the sodium ion channels of insect neurons, inhibiting the normal signal transmission of insect neurons, thereby causing their nervous system to lose normal function and eventually leading to their death. It has excellent characteristics such as broad spectrum, high efficiency and low toxicity, and is non-toxic, pollution-free, safe and reliable to humans and the environment.

[0019] Example 2: This embodiment provides an insecticide, which is prepared by configuring the following components in parts by mass: 4 parts of perilla seed oil; 0.9 parts of linalool; and 13 parts of ethanol.

[0020] A method for preparing an insecticide, comprising the following steps: mixing perilla seed oil and ethanol and stirring the mixture to obtain a mixed solution A; Mix linalool and ethanol and stir evenly to obtain a mixed solution B; The mixed solution A and the mixed solution B are fully mixed and stirred to obtain the insecticide.

[0021] Example 3: This embodiment provides an insecticide, which is prepared by configuring the following components in parts by mass: 2 parts of perilla seed oil; 0.7 parts of linalool; and 9 parts of ethanol.

[0022] A method for preparing an insecticide, the specific process is: Mixing perilla seed oil and ethanol and stirring uniformly to obtain a mixed solution A; Mix linalool and ethanol and stir evenly to obtain a mixed solution B; The mixed solution A and the mixed solution B are fully mixed and stirred to obtain the insecticide.

[0023] Example 4: This embodiment provides an insecticide, which is prepared by configuring the following components in parts by mass: 3 parts of perilla seed oil; 0.8 parts of linalool; and 12 parts of ethanol.

[0024] A method for preparing an insecticide, the specific process is: Mixing perilla seed oil and ethanol and stirring uniformly to obtain a mixed solution A; Mix linalool and ethanol and stir evenly to obtain a mixed solution B; The mixed solution A and the mixed solution B are fully mixed and stirred to obtain the insecticide.

[0025] The specific experimental methods and data are given below.

[0026] Specifically, the killing effect of a new insecticide composed of perilla seed oil, linalool and ethanol on aphids was evaluated.

[0027] Materials and equipment were prepared as follows: perilla seed oil, linalool, 95% ethanol, aphid samples (pea aphids were used as samples), pea plants (as aphid hosts), micropipettes, spray bottles, microscopes, timers, electronic balances, labels, and markers.

[0028] Preparation of insecticides Mixed solution A: Weigh 1 gram of perilla seed oil, add 8 grams of 95% ethanol, and stir thoroughly.

[0029] Mixed solution B: Weigh 0.4 g of linalool, add an appropriate amount of 95% ethanol (about 2 g), and stir thoroughly.

[0030] Final insecticide: Combine mixture A and mixture B and stir thoroughly.

[0031] Set up control group and treatment group Control group: sprayed with pure water or a solution containing only ethanol.

[0032] Treatment group: sprayed with the above prepared insecticide.

[0033] Preparing aphid samples Healthy pea plants were selected and the same number of aphids were placed on each plant, specifically, 20 aphids per plant.

[0034] The plants were randomly divided into two groups with at least 5 plants in each group to ensure that the number of aphids in each group was consistent.

[0035] Application Use a spray bottle to evenly spray: Control group: Each plant was sprayed with 10 ml of pure water or a solution containing only ethanol.

[0036] Treatment group: Each plant was sprayed with 10 ml of the prepared insecticide.

[0037] Make sure to spray evenly to cover all parts of the plant, especially where aphids are present.

[0038] Observation Record The status changes of aphids in each group were checked every 2 hours, and key indicators such as mortality were recorded.

[0039] Use a microscope to observe the status of aphids and record their activity and survival number.

[0040] Experimental data such as Figure 1 shown.

[0041] Through the above experimental method, we can obtain: Control group: The survival rate of aphids gradually decreased over time, but the decline was smaller, and the final survival rate was 75%.

[0042] Treatment group: The survival rate of aphids decreased rapidly, especially after 6 hours, the survival rate dropped to 10%, and they were completely dead after 10 hours.

[0043] The prepared insecticide kills insects by interfering with the nerve transmission of insects with linalool, while perilla seed oil has good contact and repellent effects on insects. The two are combined to give full play to the insecticidal advantages of these two substances. The combination of the two can achieve better insecticidal effects, is not easy to produce drug resistance, and is both prepared from natural plants, friendly to the environment, and harmless to the human body.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. An insecticide, characterized in that: The invention is prepared from the following components by weight: 1-4 parts of perilla seed oil; 0.4-0.9 parts of linalool; and 8-13 parts of ethanol.

2. An insecticide according to claim 1, characterized in that: The preparation method is prepared from the following components by weight: 1 part of perilla seed oil; 0.4 part of linalool; and 8 parts of ethanol.

3. The insecticide according to claim 1, wherein: The preparation method is prepared from the following components by weight: 4 parts of perilla seed oil; 0.9 parts of linalool; and 13 parts of ethanol.

4. The insecticide according to claim 1, wherein: The preparation method is prepared from the following components by weight: 2 parts of perilla seed oil; 0.7 parts of linalool; and 9 parts of ethanol.

5. The insecticide according to claim 1, wherein: The preparation method is prepared from the following components by weight: 3 parts of perilla seed oil; 0.8 parts of linalool; and 12 parts of ethanol.

6. An insecticide according to claims 1-5, characterized in that: The perilla seed oil is extracted from perilla seeds and contains: a-linolenic acid (C18H30O2), palmitic acid, linoleic acid, oleic acid, stearic acid, fatty acids, perilla aldehyde, carvone, 2-ethylfuran and caryophyllene.

7. An insecticide according to claims 1-5, characterized in that: The linalool is specifically extracted from one or more natural plants of camphor tree, rosewood, coriander, aloe vera, lavender, and eucalyptus.

8. A method for preparing an insecticide, characterized in that: The following steps are involved: (1) mixing perilla seed oil and ethanol and stirring uniformly to obtain a mixed solution A; (2) mixing linalool and ethanol and stirring uniformly to obtain a mixed solution B; (3) Mix the mixture A and the mixture B thoroughly and stir evenly to obtain the insecticide.

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