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Eupatorine pesticide and its preparation method

A technology of insecticide and euphanine, which is applied in the field of euphanine insecticide and its preparation, can solve the problems of complex content, difficult insecticidal spectrum, complex components, etc., and achieve easy large-scale production and raw materials The effect of wide sources and simple process

Inactive Publication Date: 2005-09-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology uses crude plant extracts to form the original pesticide. Although the preparation method is cheap and the process is simple, the pesticides prepared by this technology are complex in composition, the active ingredients of the drug are difficult to detect, and the drug effect is not easy to stabilize.
More importantly, the crude extract contains substances that are highly toxic to humans and animals; the inclusions are too complex, and it is not easy to study the mechanism of action of its main insecticidal active substances, and it is not easy to study its relationship with other insecticides based on its mechanism of action. Research on the mutual cooperation of pesticides to further improve the efficacy or expand their insecticidal spectrum

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The raw material of Eupatorium adenophorum is washed, crushed, soaked in ethanol, refluxed and extracted, and then extracted several times with a mixture of acetone:petroleum ether=2:8, chromatographed, and concentrated to a liquid extract of Eupatorium adenophylline extract , add 10kg of euprine, 1.8kg of nicotine, 82.5kg of motherwort alkaloids; 20kg of organic solvent into a mixing kettle with a stirrer and a thermometer, mix for 3 hours at a temperature of 65°C under stirring, and add a surfactant 14kg, tea saponin 18kg, sodium benzoate 1kg, epoxidized vegetable oil 10kg, azone 0.8kg, pH regulator 0.2kg, mix and stir evenly, obtain euprine insecticide product.

Embodiment 2

[0042] The raw material of Eupatorium adenophorum is cleaned, crushed, soaked in methanol, refluxed and extracted, and then extracted several times with a mixture of petroleum ether: chloroform = 7:3, chromatographed, and concentrated to a liquid extract of Eupatorium adenophora extract , add 48kg of euprine base, 40kg of organic solvent into a mixing kettle with a stirrer and a thermometer, mix under stirring for 1.0 hour at a temperature of 45°C, add 10kg of surfactant, 30kg of tea saponin, 1kg of sodium benzoate, 5kg of epoxidized vegetable oil, 1.5kg of azone, and 0.2kg of a pH regulator were mixed and stirred evenly to obtain the euprine insecticide product.

Embodiment 3

[0044] The raw material of Eupatorium adenophorum is cleaned, crushed, soaked in a mixed liquid of water and ethanol, refluxed and extracted, and then extracted several times with a mixture of chloroform: acetone = 4:6, chromatographed, and concentrated to liquid extract Eupatorium adenophorum Alkali extract, 25kg of euprine, 3kg of nicotine, 5kg of motherwort alkaloids; 30kg of organic solvents were added to a mixing kettle with a stirrer and a thermometer, and mixed for 5 hours at a temperature of 60°C under stirring, and the surface active 23kg of agent, 9.5kg of tea saponin, 1kg of sodium benzoate, 8kg of epoxidized vegetable oil, 1kg of azone, and 0.2kg of pH regulator were mixed and stirred evenly to obtain the euprine insecticide product.

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PUM

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Abstract

Eupatorine extractive is obtained from purplestem eupatorium and through washiong, crushing, soaking in organic solvent and / or water, extraction at 40-85 deg.c, filtering, chromatographic separation and concentration. Eupatorine extractive is mixed with nicotine, motherwort alkaloid and organic solvent inside one mixer through stirring at 40-100 deg.c; and the mixture is then mixed with added surfactant, theasaponine, azone, stabilizer, preservative and pH regulator through further stirring to obtain the eup; atorine pesticide product. The pesticide has obvious preventing and killing effect on homopteran, acarid and other pests in vegetable, fruits, flowers, forest and field.

Description

1. Technical field [0001] The invention relates to an euprine insecticide and a preparation method thereof, and belongs to the field of botanical biological agricultural chemicals. 2. Background technology [0002] my country has used the characteristics of plants, that is, to use some of its ingredients to prevent and control crop diseases and insect pests. According to records, plant pesticides, such as croton, have been used to control pests as early as 1800 years ago. Eupatorium adenophorum (Eupatorium adenophorum), also known as destroying grass, is a perennial poisonous weed of the genus Eupatorium in the family Asteraceae. Studies have shown that the crude extract of Eupatorium adenophorum has a killing effect on citrus panonychia and the like. Eupatorium adenophorum is widely distributed in various places and has become a malignant weed. In recent years, it has shown a serious spread and development trend in Yunnan, Guizhou, Sichuan and other places, which has seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/40A01N65/22A01N65/38A01P7/00
CPCY02A50/30
Inventor 刘世贵高平刘燕萍
Owner SICHUAN UNIV
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