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Agricultural bacteriostat of stellera chamaejasme vegetal biflavonoids and preparation method thereof

A technology of chamaejasma chamaejasma and plants, which is applied in botany equipment and methods, plant growth regulators, fungicides, etc. It can solve the problems of few improvements and few studies on biflavonoids of chamaejasma chamaejasma, and achieve easy decomposition , less resistant to pesticides, highly effective chemical pesticides

Inactive Publication Date: 2010-06-30
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flavonoids, especially isoflavones, have a strong antibacterial effect, but there are not many studies on the activity of daphne chamaejasba biflavonoids on plant pathogenic fungi, especially the improvement of the extraction method of daphne chamaejasba biflavonoids. many

Method used

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  • Agricultural bacteriostat of stellera chamaejasme vegetal biflavonoids and preparation method thereof
  • Agricultural bacteriostat of stellera chamaejasme vegetal biflavonoids and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Wash Daphne chamaejasme, dry in the shade in a ventilated place, or dry at 20-45°C, grind and pass through a 40-60 mesh sieve. Put the pulverized plant powder into a multifunctional extraction tank, extract with petroleum ether (40-90°C) or chloroform with 5 times the volume of the plant powder, collect the chloroform or petroleum ether extract, and obtain Daphne chamaejasme extract 16.9% Bacteriostatic cream.

Embodiment 2

[0038] Wash Daphne chamaejasma, dry it in the shade in a ventilated place, or dry it at 45°C, grind it and pass it through a 60-mesh sieve. Put the pulverized plant powder into a multifunctional extraction tank, extract with 4 times the volume of chloroform, and obtain Daphne chamaejasma extract.

Embodiment 3

[0040] Using a multifunctional extraction tank, the volume ratio of the powder of Daphne chamaejasma to the organic solvent ethanol is 1:2, 1:3 or 1:4, warm or cold soak for 8, 10, 12, 18 or 24 hours, filter, Dried, chamaejasma chamaejasma extract.

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Abstract

The invention relates to botanical agricultural bacteriostat used for controlling plant pathogenic fungi, a preparation method and purposes thereof. The botanical agricultural bacteriostat is prepared by the method that stellera chamaejasme is extracted chemically, mixed with the active ingredient including vegetal biflavonoids eluted by 30 percent of ethanol through macroporous absorbent resin RP-8, and then mixed with surface active agent, emulsifier, penetrant and synergistic agent. The characteristics of the agricultural bacteriostat of stellera chamaejasme vegetal biflavonoids are of high effect, low toxicity, less residue and harmoniousness with environment.

Description

technical field [0001] The invention relates to a pesticide and a preparation method thereof, in particular to an agricultural antibacterial agent and a preparation method thereof. Background technique [0002] The research and utilization of chamaejasma chamaejasme as a botanical pesticide is mostly focused on killing insects, and there are relatively few studies on sterilization. In fact, chamaejasma chamaejasme has been an excellent antibacterial drug in traditional Chinese medicine since ancient times. Antibacterial tests in vitro Proof: Daphne chamaejasme has complete inhibitory effect on Escherichia coli, Shigella sonnelli, Proteus, Salmonella typhi, Bacillus paratyphoid, Clonobacterium cholerae and Orphan cholerae; Shigella dysenteriae, Staphylococcus aureus and Streptococcus Has inhibitory effect; research on the antibacterial active ingredients of fungus Ustilago hordei and chamaejasma Skin fungi such as Bacillus rotifera, Rust-colored Microbacillus rotifera, Epide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01N43/16A01P3/00
Inventor 王有年卜春亚成军高菲师光禄
Owner BEIJING UNIV OF AGRI
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