A kind of Artemisia annua extract and its preparation method and application

A technology of Artemisia alba and its extract, which is applied in the field of Artemisia alba extract and its preparation, can solve the problems that the activity of mites and plant growth has not been reported, and achieve the effects of less resistance to pesticides, inhibition of weed growth, and environmental friendliness

Active Publication Date: 2017-06-16
LANZHOU UNIVERSITY
View PDF2 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of Artemisia annua extract and its preparation method and application
  • A kind of Artemisia annua extract and its preparation method and application
  • A kind of Artemisia annua extract and its preparation method and application

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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a preparation method of the extract of Artemisia alba, which is obtained by extracting the leaves of Artemisia alba with ethanol. The invention also provides the Artemisia annua extract prepared by the method and its application in the preparation of pesticides. As a biological source pesticide, the Artemisia annua extract of the present invention not only has obvious contact killing effect on agricultural pests and harmful mites, but also has a promoting effect on crops, has an inhibitory effect on farmland weeds, has no residue, is environmentally friendly, and is not easy to produce drug resistance , It is of great significance for ecological pest control and weeding in grassland agricultural ecosystems, improving crop stress resistance, establishing green agriculture, ecological agricultural systems, and scientifically and rationally developing Artemisia alba 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01P7/02A01P7/04A01P21/00A01P13/00
Inventor 刘权李晓蓓傅华南志标
Owner LANZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap