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Preparation method of botanical insecticide

A plant insecticide and plant technology, applied in botany equipment and methods, insecticides, plant growth regulators, etc., can solve the problems of slow progress and no high-efficiency plant insecticides, and achieve strong contact and control effects Good, simple operation effect

Inactive Publication Date: 2015-01-07
北京市思达尔化工新技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although our country has a long history of using secondary toxic substances produced by plants to kill diseases and pests, the real systematic research began in the 1930s, but the progress is slow. At present, there is no ideal high-efficiency plant insecticide

Method used

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Effect test

preparation example Construction

[0020] The preparation method of a plant insecticide described in the embodiment of the present invention, the preparation method comprises the following steps: ① alkaloid extraction: a. the plants with high alkaloid content to be extracted are washed with water, dried and pulverized; b. Put the crushed plants in step a into the extraction tank, add weak acidic aqueous solution, soak for 6-8 hours, then open the water outlet in the extraction tank to collect the soaking liquid flowing out, and rinse the extraction tank with the weak acidic aqueous solution For the plants in step b, collect the flushing liquid, combine the soaking liquid and the flushing liquid, and concentrate under reduced pressure to obtain a concentrated liquid; c. Add an organic solvent to the plants washed in step b, soak for 6-8 hours, open the extraction tank Collect the organic soaking liquid flowing out of the water outlet of the water outlet, and rinse the plants in the extraction tank with the organi...

Embodiment 1

[0030] Extraction of alkaloids: a. Wash the plants with high alkaloid content to be extracted with water, dry them, and crush them into 10-40 meshes; b. Put the crushed plants in step a into an extraction tank, and add weak acidic aqueous solution , soak for 6 hours, then open the water outlet in the extraction tank to collect the soaking liquid flowing out, and rinse the plants in the extraction tank with the weakly acidic aqueous solution, collect the washing liquid, combine the soaking liquid and the washing liquid, and concentrate under reduced pressure to obtain Concentrate; c. Add absolute ethanol to the plants rinsed in step b, soak for 6, open the water outlet in the extraction tank to collect the outflowing organic soaking liquid, and rinse the plants in the extraction tank with the organic solvent 1 to 3 Second, collect the organic flushing liquid, combine the organic soaking liquid and the organic flushing liquid, and concentrate the concentrated solution under reduc...

Embodiment 2

[0032] The formula of plant insecticide: alkaloid, plant essential oil, emulsifier and deionized water; the alkaloid is anisopolamine, matrine, tobaccoine and aconitine; plant essential oil is camphor tree essential oil, clove essential oil, eucalyptus Essential oil and tea tree bark essential oil; emulsifier is a mixture of castor oil ethoxylates and phenolic resin ethoxylates.

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Abstract

The invention relates to a preparation method of a botanical insecticide, which comprises the steps of (1) extracting alkaloids; (2) extracting plant essence; (3) adding each pure alkaloid extracted in the step (1) to an emulsifying agent and stirring, and uniformly mixing the various alkaloids added with the emulsifying agent; and (4) adding the plant essence obtained in the step (2) to the alkaloids obtained in the step (3), stirring and adding de-ionized water under a stirring condition. The insecticide disclosed by the invention has strong activities such as touch killing, stomach toxicity, repelling and avoiding on multiple pests, and has excellent control efficiency on the various pests; in addition, the ingredients of the insecticide come from a pure plant source, and therefore, the botanical insecticide is an excellent environment-friendly insecticide.

Description

technical field [0001] The invention relates to the extraction of alkaloids in plants and the preparation of insecticides, in particular to a preparation method of plant insecticides. Background technique [0002] my country is a large agricultural country, and has been using chemical pesticides to prevent and control pests and diseases of agricultural and forestry crops for a long time. Due to the unreasonable use of pesticides and the inherent shortcomings of some pesticides, the pests are rampant again after a period of time after use, and there are problems such as pesticide residue pollution. . In this context, it is inevitable to develop natural products and find biologically active substances. Although our country has a long history of using secondary toxic substances produced by plants to kill pests and diseases, the real systematic research began in the 1930s, but the progress is slow, and there is no ideal high-efficiency plant insecticide at present. . Nowadays,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/28A01P7/04A01P17/00A01N43/90A01N43/42
CPCY02A50/30
Inventor 程秀坤郝廼斌雷兆刚
Owner 北京市思达尔化工新技术有限责任公司
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