A kind of ginkgolic acid-abamectin compound insecticide and preparation method thereof

A technology of ginkgolic acid and abamectin, which is applied in the direction of insecticides, botanical equipment and methods, fungicides, etc., can solve the problems of unsatisfactory insecticide and low extraction rate of ginkgo active components, and achieve improved insecticide. Bactericidal and antibacterial effects, simple and easy preparation process, and the effect of reducing environmental pollution

Inactive Publication Date: 2021-03-02
LINYI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome defects such as the low extraction rate of ginkgo active components and unsatisfactory insecticide in the prior art, and provide a method to extract ginkgolic acid from ginkgo leaf waste residue, waste liquid and testa, and prepare plant-derived insecticides

Method used

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  • A kind of ginkgolic acid-abamectin compound insecticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A ginkgolic acid-abamectin compound insecticide is prepared from the following raw materials: 5 parts of ginkgolic acid extract, 5-10 parts of auxiliary agent, 0.1 part of avermectin, and 3 parts of wetting agent , 1 part of dispersant and 50 parts of filler. The auxiliary agent is formed by mixing humic acid and chitosan according to a weight ratio of 1:3-5.

[0027] The filler is diatomaceous earth.

[0028] The wetting agent is alkyl sulfate; the dispersant is lignin.

[0029] A preparation method of ginkgolic acid-abamectin compound insecticide, comprising the following steps:

[0030] (1) Ginkgo leaf waste residue and Ginkgo testa are dried and crushed, placed in 5 times the weight of 95% ethanol solution, extracted at 60°C for 6 hours, ultrasonically crushed for 1 hour after extraction, and then coarsely filtered with gauze to obtain crude extract;

[0031] (2) The crude extract obtained in step (1) is ultrafiltered with an ultrafiltration membrane at room tem...

Embodiment 2

[0038] A ginkgolic acid-abamectin compound insecticide is prepared from the following raw materials: 10 parts of ginkgolic acid extract, 5-10 parts of auxiliary agent, 0.3 part of abamectin, and 4 parts of wetting agent , 2 parts of dispersant and 80 parts of filler. The auxiliary agent is formed by mixing humic acid and chitosan according to the weight ratio of 1:3-5.

[0039] The filler is kaolin.

[0040] The wetting agent is alkyl sulfate; the dispersant is lignin.

[0041] A preparation method of ginkgolic acid-abamectin compound insecticide, comprising the following steps:

[0042] (1) Dry and pulverize the ginkgo leaf waste residue and ginkgo exocarp, put them in 5 times the weight of 95% ethanol solution, extract at 60°C for 10 hours, ultrasonically crush for 1.5 hours after extraction, and then coarsely filter with gauze, Obtain crude extract;

[0043] (2) The crude extract obtained in step (1) is ultrafiltered with an ultrafiltration membrane at room temperature, a...

Embodiment 3

[0050] A kind of ginkgolic acid-abamectin composite insecticide is prepared from the following raw materials: 15 parts of ginkgolic acid extract, 5-10 parts of auxiliary agent, 0.5 part of abamectin, and 5 parts of wetting agent , 3 parts of dispersant and 100 parts of filler. The auxiliary agent is formed by mixing humic acid and chitosan according to the weight ratio of 1:3-5.

[0051] The filler is bentonite.

[0052] The wetting agent is alkyl sulfate; the dispersant is sodium polyacrylate.

[0053] A preparation method of ginkgolic acid-abamectin compound insecticide, comprising the following steps:

[0054] (1) Ginkgo leaf waste residue and Ginkgo exocarp are dried and pulverized, placed in 5 times the weight of 95% ethanol solution, extracted at 60°C for 12 hours, ultrasonically crushed for 2 hours after extraction, and then coarsely filtered with gauze to obtain crude extract;

[0055] (2) The crude extract obtained in step (1) is ultrafiltered with an ultrafiltrat...

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Abstract

The invention discloses a ginkgolic acid-abamectin compound insecticide and a preparation method thereof, belonging to the technical field of pesticides. The present invention is prepared from the following raw materials in parts by weight: 5-15 parts of ginkgolic acid extract, 5-10 parts of auxiliary agent, 0.1-0.5 part of avermectin, 3-5 parts of wetting agent, 1 part of dispersing agent ‑3 parts and filler 50‑100 parts. The present invention adopts the combination of membrane technology and macroporous adsorption resin to separate and purify ginkgolic acid, and adopts ultrafiltration for purification to remove impurities such as pigments, particles, polysaccharides and proteins, which can solve the problem of separation column clogging; use macroporous adsorption resin to separate , can improve the yield and purity of ginkgolic acid, and realize the high-efficiency extraction of ginkgolic acid. The invention selects discarded ginkgo leaf waste residue and outer testa as raw materials, fully utilizes the active substances therein, reduces the use of chemical pesticides, and reduces environmental pollution.

Description

technical field [0001] The present invention relates to a kind of insecticide for agricultural crops, be specifically related to a kind of ginkgolic acid-abamectin compound insecticide and preparation method thereof. Background technique [0002] my country is rich in ginkgo resources, especially the ginkgo and ginkgo leaves in southern Shandong, which are famous at home and abroad for their high content of active ingredients. The flavonoids and ginkgolides in Ginkgo biloba have significant curative effects on cardiovascular and cerebrovascular diseases. The sales of Ginkgo biloba extracts are relatively large in the domestic and foreign markets. Therefore, the focus of research and development at home and abroad is the extraction of flavonoids and lactones and applications. Ginkgolic acid is also an important component that cannot be ignored in ginkgo leaves, fruits and outer testa, accounting for 1-2% of ginkgo leaves (dry), accounting for 3-5% of ginkgo outer testa (dry)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/06A01N43/90A01P7/04A01P7/02A01P1/00A01P3/00
CPCA01N43/90A01N65/00A01N65/06Y02A50/30
Inventor 张素军冷鹏张祥胜杨加鑫
Owner LINYI UNIVERSITY
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