Artemisia shaerocephala extract and preparation method and application thereof

A technique for Artemisia argyi and its extract is applied in the field of the Artemisia argyi extract and its preparation, which can solve the problems such as the unreported activity of mites and plant growth, and achieve the effects of being less resistant to drugs, inhibiting the growth of weeds, and promoting the growth of crops.

Active Publication Date: 2015-06-17
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activity of the extract of Artemisia baicalensis against mites and plant growth has not been reported.

Method used

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  • Artemisia shaerocephala extract and preparation method and application thereof
  • Artemisia shaerocephala extract and preparation method and application thereof
  • Artemisia shaerocephala extract and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of Artemisia baicalensis extract of the present invention is as follows:

[0018] Collect the fresh leaves of Artemisia baicalensis at the mature stage, dry them in the shade and pulverize them, and pass through a 100-mesh sieve to obtain fine powder. The leaf fine powder was extracted with 20 times absolute ethanol solution, ultrasonically extracted for 30 minutes, repeated extraction twice, and concentrated under reduced pressure. Dry it in a dark, low-temperature and well-ventilated place to prepare the extract.

Embodiment 2

[0020] The preparation method of Artemisia baicalensis extract of the present invention is as follows:

[0021] Collect the fresh leaves of Artemisia baicalensis at the mature stage, dry them in the shade and pulverize them, and pass through a 100-mesh sieve to obtain fine powder. The leaf fine powder was extracted with 5 times absolute ethanol solution, ultrasonically extracted for 10 minutes, repeated extraction 4 times, and concentrated under reduced pressure. Dry it in a dark, low-temperature and well-ventilated place to prepare the extract.

Embodiment 3

[0023] The preparation method of Artemisia baicalensis extract of the present invention is as follows:

[0024] Collect the fresh leaves of Artemisia baicalensis at the mature stage, dry them in the shade and pulverize them, and pass through a 100-mesh sieve to obtain fine powder. The leaf fine powder was extracted with 50 times absolute ethanol solution, ultrasonically extracted for 90 minutes, repeated extraction 3 times, and concentrated under reduced pressure. Dry it in a dark, low-temperature and well-ventilated place to prepare the extract.

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PUM

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Abstract

The invention provides a preparation method of an artemisia shaerocephala extract. The artemisia shaerocephala extract is obtained by extracting artemisia shaerocephala leaves with ethanol. The invention further provides an artemisia shaerocephala extract prepared by the method provided by the invention and an application in pesticide preparation. The artemisia shaerocephala extract provided by the invention is used as a biogenic pesticide, which not only has obvious contact toxicity on agricultural pests and mites, has a growth-promoting effect on crops and has an inhibiting effect on farmland weeds, but also is residue-free, is environmentally friendly and unlikely generates insecticide resistance, and the artemisia shaerocephala extract has very important significance for ecological weed and pest control in pastoral agriculture ecological systems, improvement of stress resistance of crops, establishment of green agriculture and ecological agricultural system, and scientific and reasonable development of artemisia shaerocephala resources.

Description

technical field [0001] The invention belongs to the technical field of biopesticides, and in particular relates to an Artemisia annua extract, a preparation method and application thereof. Background technique [0002] The history of human agriculture is the history of fighting against agricultural diseases and insect pests. Chemical pesticides were once all the rage, but because of their high toxicity, high residues and easy resistance, especially in recent years, under the pressure of food safety and environmental protection, many countries and international organizations have banned or restricted the use of chemical pesticides. Relevant departments in our country have also issued a series of policies and measures to restrict or ban the use of highly toxic chemical pesticides. Biological pesticides have the characteristics of strong selectivity and special control effects on specific plant diseases and insect pests, and they are novel in structure and have many active sit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P7/02A01P7/04A01P21/00A01P13/00
Inventor 刘权李晓蓓傅华南志标
Owner LANZHOU UNIVERSITY
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