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Pokeberry root extract and its novel use

A technology of extract and pokeweed, applied in the field of plant extract and its preparation, can solve the problems of short growth time and low acaricidal activity

Inactive Publication Date: 2009-10-28
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is intensive monoculture and the use of non-specific insecticides
Secondly, due to the short growth time of one generation of mites, they can quickly develop resistance to the original acaricides.
These insecticides often do not have high acaricidal activity, and while killing mites, they also eliminate natural enemies of mites.

Method used

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  • Pokeberry root extract and its novel use
  • Pokeberry root extract and its novel use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: pokeweed extract and preparation method thereof

[0032] Weigh the dry pokeweed plant powder, add petroleum ether with 5 times the amount of the dry powder, extract twice at room temperature, each time for 4 days, concentrate under conventional reduced pressure, and combine the extracts to obtain a petroleum ether extract. The above-mentioned pokeweed extract can be Acaricides are made by conventional methods.

Embodiment 2

[0033] Embodiment 2: pokeweed extract and preparation method thereof

[0034] Weigh pokeweed powder, add chloroform of 4 times the weight of dry powder, extract 4 times at room temperature respectively, each time for 3 days, concentrate under reduced pressure, merge to obtain chloroform extract, and the above-mentioned pokeweed extract can be prepared by conventional methods. Acaricide.

Embodiment 3

[0035] Embodiment 3: pokeweed extract and preparation method thereof

[0036] Weigh pokeweed powder, add petroleum ether 6 times the weight of the dry powder, extract 3 times at room temperature, each time for 5 days, concentrate under reduced pressure, combine to obtain methanol extract, the above-mentioned pokeweed extract can be prepared by conventional methods Acaricide.

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PUM

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Abstract

The invention discloses a pokeweed extract and a preparation method thereof; the invention also discloses a new use of the pokeweed extract for killing acarids.

Description

technical field [0001] The invention relates to a plant extract and a preparation method thereof, in particular to a pokeweed extract, a preparation method and a new application thereof. Background technique [0002] In the long history of agriculture, human beings have been trying to find various ways to effectively prevent and control diseases, insects, grasses, rats and other harmful organisms. However, the most successful control of pests came after the development of chemical pesticides in the mid-20th century. As a product of science, pesticides have brought great benefits to people in preventing and controlling harmful organisms, reducing investment, increasing income, and promoting agricultural development, but at the same time there are corresponding ecological risks. Of course, due to problems such as the use of technology and the fact that people only pay attention to the positive side in the process of using pesticides, they have not paid attention to the "3E" (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/00A01P7/02
Inventor 王有年师光禄赵磊杜鹃
Owner BEIJING UNIV OF AGRI
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