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New composition of pesticide, preparation method, and purpose

A pesticide composition and a technology for the composition, applied in the field of pesticides, can solve problems such as restricting the sustainable development of agriculture, and achieve the effects of stable chemical properties and abundant raw material resources

Inactive Publication Date: 2007-05-09
LVJING BIOTECH SHANGHAI
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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 agriculture in our country.

Method used

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  • New composition of pesticide, preparation method, and purpose
  • New composition of pesticide, preparation method, and purpose
  • New composition of pesticide, preparation method, and purpose

Examples

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Effect test

preparation example Construction

[0028] B) Preparation method of the composition

[0029] The pesticide composition of the present invention can be prepared conveniently by mixing commercially available toosendanin, croton oil, limonene (available from the above-mentioned commercial channels) with a carrier in a certain ratio.

[0030] In view of the abundant raw material resources such as Toosendan, croton, and Zanthoxylum bungeanum, in a preferred embodiment of the present invention, the raw materials of Toosendan, croton, and Zanthoxylum bungeanum can be extracted with an organic solvent, and then filtered and concentrated to obtain rich Extracts containing toosendanin, croton oil and citric acid, and then compounding the above extracts and carriers in a certain ratio, so as to prepare the pesticide composition of the present invention.

[0031] In a preferred embodiment, croton extract containing croton oil, toosendan extract containing toosendan and Zanthoxylum bungeanum extract containing limonene are m...

Embodiment 1

[0038] The technique of extracting toosendanin from the seeds of toosendan in embodiment 1

[0039] Each of the following extraction methods was performed separately.

[0040] 1) Add 30% ethanol to the coarse powder of Toosendan and reflux at 40°C for 4*1h / time, filter the ethanol reflux liquid to remove the residue, and recover the ethanol from the filtrate under reduced pressure until it has no alcohol smell. The concentrated solution is shaken with chloroform and left overnight to remove the supernatant The liquid precipitate was filtered by suction, washed with a small amount of chloroform, and dried to obtain the crude product of toosendanin. Add 6 times the amount of chloroform and 1 times the amount of ethanol to the crude product of toosendanin to reflux to dissolve, then add an equal volume of hot water at 40-50°C to extract the solution once, put it in a separatory funnel and let it stand for stratification. The chloroform layer was concentrated, cooled and filtered...

Embodiment 2

[0046] Embodiment 2 extracts limonene from Zanthoxylum bungeanum

[0047] Perform the following extraction methods separately:

[0048] 1) Add 5 times the amount of 95% ethanol to the Zanthoxylum bungeanum powder, reflux at 40°C for 45 minutes, and filter. The filter residue is then refluxed for 3*1h / time for filtration. The filtrates were combined, and the ethanol was recovered under reduced pressure until it had no alcohol smell and became oily.

[0049] 2) Add 5 times the amount of 95% ethanol to the Zanthoxylum bungeanum powder, reflux at 40°C for 45 minutes, and filter. The filtrate was put into new peppercorn powder and refluxed for 45 minutes, and filtered. The filtrate is then put into new peppercorn powder until the oil in the ethanol is saturated. Add 5 times the amount of 95% ethanol to the filter residue after the first extraction of Zanthoxylum bungeanum powder, reflux at 40° C. for 1 hour, and filter. The filtrate is added to the filter residue after the fir...

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PUM

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Abstract

An agricultural chemical used as insecticide and bactericide is prepared from azedarachin, croton oil, limonene and carrier. Its preparing process and application are also disclosed.

Description

technical field [0001] The present invention relates to the field of pesticides, in particular, the present invention relates to a novel pesticide composition, a preparation method and application of the 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, the 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 biopesticide composition that is harmless to natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01P1/00A01N65/26A01N65/18
CPCY02A50/30
Inventor 张顺忠赵廷发钱坚明
Owner LVJING BIOTECH SHANGHAI
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