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Sarmentose pepper herb extract and application thereof in preparing insecticidal bacteriostat

An extract, insecticidal and bactericidal technology, applied in the direction of insecticides, fungicides, chemicals for biological control, etc., to achieve the effect of easy-to-obtain raw materials, simple manufacturing process, and good insecticidal effect

Active Publication Date: 2011-05-04
ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, no report has been found on the production of botanical insecticides and fungicides with the use of betel as a raw material

Method used

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  • Sarmentose pepper herb extract and application thereof in preparing insecticidal bacteriostat
  • Sarmentose pepper herb extract and application thereof in preparing insecticidal bacteriostat
  • Sarmentose pepper herb extract and application thereof in preparing insecticidal bacteriostat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1, the preparation of the betel extract

[0052] Clean the Pseudomonas plants grown to the flowering period (the seedlings are purchased from Haozhou Baohua Pharmaceutical Co., Ltd.), discard the leaves, put them in the room to dry naturally, and crush the roots and stems through 40 mesh Sieve, use ethanol as solvent, mix according to the ratio of 1:8 by weight of Konjac and ethanol, extract by cold soaking (at room temperature, 20-35°C, soaking) for 3 times, each time for 10 days; filter with Buchner funnel , merge the filtrate, concentrate the filtrate to a paste with a rotary evaporator under reduced pressure, add an equal weight of 100-200 mesh column chromatography silica gel and mix into a powder, and use a dry method to go up the column (the packing of the chromatography column is 200-300 mesh Column chromatography on silica gel), eluting with petroleum ether as a solvent, concentrating the collected eluent and drying it in a 45°C electric constant tem...

Embodiment 2

[0053] Embodiment 2, the preparation of False Betel Extract

[0054] Put the plants of Pseudomonas japonica grown to flowering period (the seedlings are purchased from Haozhou Baohua Pharmaceutical Co., Ltd.) indoors and dry in the shade naturally, crush them through a 40-mesh sieve, use methanol 10 times the weight of the pulverized products of Pseudomonas chinensis, under reflux conditions Extraction, the extraction temperature is 60°C, the extraction time is 24 hours, the filtrate is concentrated under reduced pressure with a rotary evaporator to a paste, and then dried in a 45°C electric constant temperature blast drying oven to constant weight to obtain the betel extract.

Embodiment 3、5

[0055] The preparation of embodiment 3,5% pseudo benylon microemulsion

[0056] 5% false betel microemulsion is made up of the material of following percentage by weight:

[0057] 5% of the False Kelp extract prepared in Example 1,

[0058] Solvent 15%,

[0059] Emulsifier 18%,

[0060] Stabilizer 3%,

[0061] Antifreeze 5%,

[0062] The remainder is water;

[0063] Wherein, the solvent is a mixed solution of ethanol, n-butanol and benzene, the mass ratio of ethanol, n-butanol and benzene is 3:1:1, and the emulsifier is dodecylbenzenesulfonate and phenol derivative polyoxyethylene ether. In the mixture, the mass ratio of dodecylbenzenesulfonate and phenol derivative polyoxyethylene ether is 1:2, the stabilizer is butyl glycidyl ether, and the antifreeze agent is glycerin.

[0064] Take by weighing 5 kilograms of the Pseudomonas chinensis extract prepared in Example 1, be dissolved in the mixed solution of 15 kilograms of ethanol, n-butanol and benzene (the mass ratio of ...

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PUM

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Abstract

The invention discloses a sarmentose pepper herb extract and application thereof in preparing an insecticidal bacteriostat. A method for preparing the sarmentose pepper herb extract comprises the following steps of: 1) crushing roots and stems of sarmentose pepper herb to obtain coarse powder of the sarmentose pepper herb; and 2) performing cold extraction by using organic solvent in an amount which is 6 to 10 times the weight of the crushed sarmentose pepper herb, filtering and concentrating the filtrate into paste, introducing into a chromatographic column with a silica gel filler with the granularity of 200 to 300 meshes, eluting by using petroleum ether, and concentrating and drying the eluent to prepare the sarmentose pepper herb extract, wherein the time for cold extraction is 7 to 10 days and the extracting times is 2 to 3 times. The extract serving as a raw material is reasonably mixed with a solvent, an emulsifier, an antifreeze agent, a stabilizing agent and water, and sarmentose pepper herb microemulsion can be prepared. The invention has good effect of preventing and controlling prodenia litura, parasaissetia nigra nietner, lipaphis erysimi, banana anthrax bacteria and rubber anthrax bacteria. The preparation is simple in preparation process and low in cost, meets the conventional development tendency of pesticides and is suitable for popularization and application.

Description

technical field [0001] The present invention relates to a kind of betel extract and its application in preparation of insecticide and antibacterial agent. Background technique [0002] In the long-term struggle between humans and pests, the development of pesticides has gone through a process from high toxicity to low toxicity, low efficiency to high efficiency, killing to control, and the types of pesticides are becoming more and more abundant. It can be roughly divided into four categories: chemical synthesis, animal sources, plant sources, and microbial sources. At present, chemical insecticides are mainly used for control. However, due to the extensive use of chemical pesticides and irregular use of pesticides, pests have developed resistance to various pesticides such as organophosphates, carbamates, pyrethroids, and nicotine. [0003] Plants are a huge treasure trove of natural products. They produce more than 400,000 secondary metabolites such as alkaloids, flavonoi...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01P7/04A01P3/00
CPCY02A50/30
Inventor 符悦冠毕仁军韩冬银刘红芳黄武仁冯岗张方平张敬宝金启安
Owner ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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