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Farm chemical composition, preparing method and use

A pesticide composition and pesticide technology, applied in the field of pesticides, can solve problems that restrict the sustainable development of agriculture, and achieve the effects of easy artificial cultivation, rapid onset of effect, and abundant raw material resources

Inactive Publication Date: 2007-11-14
张顺忠 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, chemical pesticides have been used for half a century, and the resistance of pests has increased by dozens of times, which has greatly restricted the sustainable development of my country's agriculture.

Method used

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  • Farm chemical composition, preparing method and use
  • Farm chemical composition, preparing method and use
  • Farm chemical composition, preparing method and use

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preparation example Construction

[0033] B) Preparation method of the composition

[0034] The pesticide composition of the present invention can be prepared conveniently by mixing commercially available scopolamine, hyoscyamine, atropine, triptolide, and toosendanin in a certain ratio with an acceptable carrier on the pesticide. The order of mixing is not particularly limited.

[0035] In view of Datura, Tripterygium wilfordii, Toosendan and other raw material resources are very rich, in a preferred embodiment of the present invention, the raw materials of Datura or Datura, Tripterygium wilfordii, Toosendan can be processed with organic solvents. Extract, then filter, concentrate and purify to obtain Datura alkaloids, triptolide, and toosendanin, and then compound and mix the above-mentioned effective substances and pesticide-acceptable carriers in a certain proportion, so as to obtain the present invention Pesticide composition.

[0036] C) application

[0037] The composition and method described herein ca...

Embodiment 1

[0041] The extraction process of embodiment 1 datura total alkaloids

[0042] Each of the following extraction methods was performed separately.

[0043] 1) Add 95% ethanol to the coarse powder of Datura datura (white flower) and reflux at 40°C for 3×1 hour / time, recover the ethanol to the concentrated solution (the ratio of solid to liquid is 1:2), wash with chloroform after acidification to remove fat solubility Impurities (0.5 mol / l sulfuric acid aqueous solution for acidification), the obtained acid aqueous solution is neutralized to pH 9 with sodium carbonate and then extracted with chloroform, and the chloroform is recovered from the extract to dryness to obtain the total base of Datura datura in oil. According to "The Pharmacopoeia of the People's Republic of China" in 2000, the first part (appendix VI0) high-performance liquid chromatography measures the total alkaloid content in the oily datura total alkaloids, and records the content of the total alkaloids of datura ...

Embodiment 2

[0047] Example 2. Extraction of triptolide

[0048] 1) Soak Tripterygium wilfordii root bark coarse powder in cold water for 2 hours, decoct in water for 3×2h / time, then concentrate the decoction to a material-to-liquid ratio of 1:2, add ethanol after cooling to 75% alcohol content, and filter after standing for 5 hours , and recover the filtrate. The precipitate was washed 3 times with 75% ethanol, the washing liquid and the filtrate were combined, and the ethanol was recovered to a paste. Measure the content of triptolide according to the first part (Appendix VI0) of "Pharmacopia of the People's Republic of China" in 2000, and record the obtained triptolide as 0.03%~0.08% (weight) of the former drug amount .

[0049] 2) Soak tripterygium root bark coarse powder in cold water for 2 hours, add hydrochloric acid to adjust pH=4, add 0.5% cellulase (activity unit 2000u / g) and stir thoroughly, reflux at 40°C for 1.5 hours, then add 5 times the amount of 95% ethanol to reflux Ex...

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Abstract

The present invention provides a pesticide composite. It contains meteloidine, tripterygium wilfordii lactone and toosendanin which are used as active components and carrier. Said invention also relates to its preparation method and application. The invented pesticide composite has broad spectrum insecticidal and germicidal function.

Description

technical field [0001] The present invention relates to the field of pesticides, in particular, the present invention relates to a novel botanical pesticide composition, a method for preparing the pesticide composition and the use of the pesticide composition. Background technique [0002] my country is a big agricultural country, and so far, artificially synthesized chemical pesticides that are not found in nature are still widely used. Since there is no corresponding microbial group in nature, pesticide residues cannot be degraded, polluting land, water sources and the environment. Pesticide residues enter humans and animals through the food chain and induce various diseases. Furthermore, chemical pesticides have been used for half a century, and the resistance of pests has increased by dozens of times, which has greatly restricted the sustainable development of agriculture in our country. [0003] Therefore, there is still an urgent need in the art for a novel biopestic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01P3/00A01P7/04
Inventor 张顺忠赵廷发
Owner 张顺忠
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