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Herba asari termite preventing agent preparing method

A control agent, asarum technology, applied in the field of preparation of termite control agent made from Chinese herbal medicine Asarum

Inactive Publication Date: 2007-03-28
刘树民 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, which active ingredient in Asarum medicinal powder plays the role of inhibiting and killing termites has not been reported in the literature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Cut the whole herb of Asarum into 2cm pieces, put it in a flask, add water (the ratio of Asarum to water is 1:1~10), shake and mix, then heat the flask slowly to boiling, and keep it in a slightly boiling state for 0.5 ~ 2 hours, stop heating, let stand for a while, and filter out the liquid medicine. Collect the medicinal residues after the volatile oil has been evaporated, drain, soak the medicinal residues with 55% to 95% ethanol, heat at 70°C to 90°C for 0.5 to 2 hours, filter out the medicinal liquid, repeat 1 to 3 times, combine the medicinal liquids, After recovering ethanol, dry under reduced pressure to constant weight to obtain a black thick paste.

Embodiment 2

[0018] a. Cut the whole herb of Asarum into 2cm pieces, put it in a flask, add water (the ratio of Asarum to water is 1:1~10), shake and mix, then heat the flask slowly to boiling and keep it slightly boiling After 0.5 to 2 hours, stop heating, let it stand for a while, and filter out the liquid medicine. Collect the medicinal residues after the volatile oil has been evaporated, drain, soak the medicinal residues with 55% to 95% ethanol, heat at 70°C to 90°C for 0.5 to 2 hours, filter out the medicinal liquid, repeat 1 to 3 times, combine the medicinal liquids, After recovering ethanol, dry under reduced pressure to constant weight to obtain a black thick paste. b. Mix the thick paste substance obtained in step a with water and an emulsifier, and add Tween 80 as an emulsifier. The ratio of Tween 80 to water is 1:100.

Embodiment 3

[0020] a. Cut the whole herb of Asarum into 2cm pieces, put it in a flask, add water (the ratio of Asarum to water is 1:1~10), shake and mix, then heat the flask slowly to boiling and keep it slightly boiling After 0.5 to 2 hours, stop heating, let it stand for a while, and filter out the liquid medicine. Collect the medicinal residues after the volatile oil has been evaporated, drain, soak the medicinal residues with 55% to 95% ethanol, heat at 70°C to 90°C for 0.5 to 2 hours, filter out the medicinal liquid, repeat 1 to 3 times, combine the medicinal liquids, After recovering ethanol, dry under reduced pressure to constant weight to obtain a black thick paste. b. Mix the thick paste substance obtained in step a with acetone to prepare termite-suppressing and killing agents.

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Abstract

The present invention provides a preparation method of termite controlling agent by using Chinese medicinal material asarum. Said Chinese medicinal material asarum can be made into contact in secticide or poisoning bait for effectively killing termites.

Description

Technical field: [0001] The invention belongs to the technical field of termite control agents, and specifically refers to a preparation method for preparing a termite control agent from Chinese herbal medicine Asarum. Background technique: [0002] my country's termite damage is serious, and the economic loss caused by termite damage to buildings alone reaches about 2 billion to 2.5 billion yuan per year. In addition, termites often damage dams and burst rivers, causing catastrophic disasters, and the economic losses caused are incalculable. However, the termite control agents currently used in my country (chlordane, mirex, organophosphorus insecticides, etc.) are highly toxic and have a long residual effect period, which is extremely harmful to the human and animal environment. Asarum (Aristolochiaceae Asarum) is a traditional Chinese herbal medicine in my country. Since ancient times, Chinese folks have used Asarum in bags to dispel insects and avoid pollution; in southe...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01P11/00A01N65/08
Inventor 刘树民杜心懿罗明媚尹红
Owner 刘树民
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