Insect-repelling pesticide composition and preparation method thereof

Abstract

The invention relates to an insect-repelling pesticide composition and a preparation method thereof. The insect-repelling pesticide composition comprises a concentrated solution extracted from croton, szechwan chinaberry fruit and an insect-repelling traditional Chinese medicine primer in a mass ratio of 1: (1-3): (0.2-0.3). The raw materials of the pesticide composition are pure traditional Chinese medicines from the nature, can be naturally degraded, are harmless to soil, underground water and the like, are safe to use and have a good market application prospect.

Description

Technical Field

[0001] The invention belongs to the field of pesticides, and particularly relates to an anthelmintic pesticide composition and a preparation method thereof. Background Art

[0002] The use of chemical pesticides on food crops and cash crops is to eliminate or reduce pests and diseases and increase crop yields. For more than half a century, people have become accustomed to the use of chemical synthetic pesticides. Chemical synthetic pesticides are widely used worldwide because of their good effects, quick results, low prices and ease of use. However, the use of chemical synthetic pesticides has also brought many well-known problems: food, soil, groundwater, rivers, lakes, oceans and air are all seriously polluted by chemical residues, and have side effects on non-target insects and other organisms, leading to the destruction of the ecosystem. At the same time, the number and variety of insects that have developed resistance and recovery capabilities to chemical synthetic pesticides are also increasing. In addition, the use, abuse and improper handling of highly toxic chemical synthetic pesticides have also led to many frequent poisoning incidents. Therefore, it is necessary to develop a more environmentally friendly pesticide. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an anthelmintic pesticide composition and a preparation method thereof. The raw materials of the pesticide composition are all pure traditional Chinese medicines from nature, which are naturally degradable, have no toxicity to the environment, are safe to use, and have good market application prospects.

[0004] The invention provides an anthelmintic pesticide composition, which comprises a concentrated solution extracted from croton seeds, chinaberry seeds and anthelmintic traditional Chinese medicine lead in a mass ratio of 1:1-3:0.2-0.3.

[0005] Preferably, the anthelmintic Chinese herbal medicine includes wormwood, mint, musk, coral grass or other traditional anthelmintic Chinese herbal medicines.

[0006] Preferably, the volume percentage of the concentrate in the composition is 75-85%.

[0007] Preferably, the composition further comprises dimethyl sulfoxide, limonene, a surfactant and a vegetable oil emulsifier.

[0008] More preferably, the volume percentage of dimethyl sulfoxide in the composition is 5-15%.

[0009] More preferably, the volume percentage of limonene in the composition is 1-10%.

[0010] More preferably, the surfactant is a silicone surfactant, and its volume percentage in the composition is 5-15%.

[0011] More preferably, the vegetable oil emulsifier is 602, and its volume percentage in the composition is 0.1-1%.

[0012] The present invention also provides a method for preparing an insect repellent pesticide composition, comprising the following steps:

[0013] (1) crushing croton and chinaberry, mixing them in a certain proportion, and then mixing them with the crushed anthelmintic Chinese medicine; after stirring evenly, adding them to a continuous extraction device, firstly soaking them with alcohol, then synchronously extracting them with ultrasonic waves, and simultaneously discharging and recovering the medicine residues;

[0014] (2) filtering the extracted product to obtain a clean liquid; then vacuum concentrating the liquid to recover the alcohol;

[0015] (3) The concentrated pesticide solution is mixed with dimethyl sulfoxide, limonene, a surfactant and a vegetable oil emulsifier in a temporary storage tank for emulsification to obtain an insect repellent pesticide composition for filling.

[0016] The alcohol concentration in steps (1) and (2) is 60-75%.

[0017] The ultrasonic wave in step (1) is carried out at room temperature, the ultrasonic wave wavelength is 25-30 Hz, and the power is 1000w-2000w.

[0018] The filtration in step (2) is performed using 200-mesh microporous filtration.

[0019] The temperature of the vacuum concentration in step (2) is 25-40°C.

[0020] The invention also provides an application of the anthelmintic pesticide composition in pesticides.

[0021] Beneficial Effects

[0022] (1) The raw materials of the pesticide composition of the present invention are all pure Chinese medicines from nature, which can be naturally degraded, have no toxicity to soil, groundwater, etc., and are safe to use;

[0023] (2) The addition of the anthelmintic Chinese medicine lead in the present invention also synergistically and significantly enhances the anthelmintic effect of azadirachtin and croton;

[0024] (3) The preparation process of the present invention is a continuous extraction automated process. The Chinese medicine raw materials do not need to be extracted separately in advance and then compounded, but are uniformly added to the raw material infiltration and ultrasonic extraction integrated tank for compound extraction; at the same time, the extraction solvents used in the present invention are all alcohol, and no toxic solvents such as petroleum ether are used, which is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1The present invention is a schematic diagram of the preparation process of the composition. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0027] Example 1

[0028] This embodiment provides an insect repellent pesticide composition, which includes a concentrated solution extracted from 82.8 kg of Croton tiglium, 248.4 kg of Melia azedarach and 20.7 kg of Artemisia argyi. The volume of the concentrated solution is 83 L.

[0029] The composition also includes 6.6 L of dimethyl sulfoxide, 3.8 L of limonene, 2845.5 L of surfactant, and 0.5 L of vegetable oil emulsifier 602.

[0030] like Figure 1 As shown, this embodiment also provides a method for preparing an insect repellent pesticide composition, comprising the following steps:

[0031] (1) Crush croton and neem seeds to about 80 mesh, and then mix with the crushed wormwood leaves; after stirring evenly, add them to a continuous extraction device, first soak them with 75% alcohol, then perform ultrasonic extraction simultaneously, and discharge and recover the drug residues, and the extraction product - drug liquid enters a filtering device; wherein the ultrasonic temperature is room temperature, the ultrasonic wavelength is 25 Hz, and the power is 1000 W;

[0032] (2) filtering the extracted product, the liquid medicine, and entering the concentration equipment system for vacuum concentration, recovering the alcohol, and obtaining a concentrated liquid medicine; wherein the filtration is performed by 200-mesh microporous filtration; and the temperature of the vacuum concentration is 25 to 40° C.;

[0033] (3) The concentrated liquid medicine is mixed with dimethyl sulfoxide, limonene, a surfactant and a vegetable oil emulsifier in a temporary storage tank for emulsification to obtain an insecticide pesticide composition for filling.

[0034] Comparative Example 1

[0035] The difference from Example 1 is that 20.7 kg of mugwort leaves are not added.

[0036] Pest control trend experiment:

[0037] Table 1 Fruit fly experiment of packaging line products 2023.4.25 (Comparative Example 1)

[0038]

[0039] (The figures in the table are the number of fruit flies that died and the percentage of death)

[0040] Table 2 Packaging line product fruit fly experiment 2023.7.17 (Example 1)

[0041]

[0042] (The figures in the table are the number of fruit flies that died and the percentage of death)

Claims

1. An insect repellent pesticide composition, characterized in that: The anthelmintic pesticide composition comprises a concentrated solution extracted from croton, chinaberry and anthelmintic traditional Chinese medicine in a mass ratio of 1:1-3:0.2-0.

3.

2. The insect repellent pesticide composition according to claim 1, characterized in that: The volume percentage of the concentrate in the composition is 75-85%.

3. The insect repellent pesticide composition according to claim 1, characterized in that: The composition also includes dimethyl sulfoxide, limonene, a surfactant and a vegetable oil emulsifier.

4. The insect repellent pesticide composition according to claim 3, characterized in that: The volume percentage of the dimethyl sulfoxide in the composition is 5-15%.

5. The insect repellent pesticide composition according to claim 3, characterized in that: The volume percentage of the limonene in the composition is 1-10%.

6. The insect repellent pesticide composition according to claim 3, characterized in that: The surfactant is an organosilicon surfactant 284, and its volume percentage in the composition is 5-15%.

7. The insect repellent pesticide composition according to claim 3, characterized in that: The vegetable oil emulsifier is 602, and its volume percentage in the composition is 0.1-1%.

8. A method for preparing the insect repellent pesticide composition according to any one of claims 1 to 7, comprising the following steps: (1) crushing croton and chinaberry, mixing them in a certain proportion, and then mixing them with an anthelmintic Chinese medicine; after stirring evenly, adding them to a continuous extraction device, firstly soaking them with alcohol, then synchronously extracting them with ultrasonic waves, and discharging and recovering the medicine residues; (2) vacuum concentrating the extracted product, the drug solution, and recovering the alcohol solvent; (3) The concentrated pesticide solution is mixed with dimethyl sulfoxide, limonene, a surfactant and a vegetable oil emulsifier in a temporary storage tank for emulsification to obtain an insect repellent pesticide composition for automatic filling.

9. Use of the insect repellent pesticide composition according to any one of claims 1 to 7 in pesticides.

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