Volatile extract with bactericidal activity in fraxinus hupehensis and bactericidal composition thereof

A technology with bactericidal activity and volatility, applied in the direction of fungicides, biocides, arthropodicides, etc., to achieve broad-spectrum bactericidal activity and significant bactericidal inhibition

Active Publication Date: 2017-06-13
YANGTZE UNIVERSITY
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the research on the anti-insect and disease resistance of Antiparatus aureus

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
  • Volatile extract with bactericidal activity in fraxinus hupehensis and bactericidal composition thereof
  • Volatile extract with bactericidal activity in fraxinus hupehensis and bactericidal composition thereof
  • Volatile extract with bactericidal activity in fraxinus hupehensis and bactericidal composition thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] A volatile extract with fungicidal activity in the present invention, the volatile extract is prepared by the following method: the roots, stems, leaves, flowers and / or seeds of the white wax at -5 ~ After low-temperature pulverization treatment at 0°C, add it to a simultaneous distillation and extraction device (SDE) for distillation and extraction at a temperature of 50-150°C for 1-72 hours, cool to room temperature, stand and separate layers, take the organic phase, and use the organic phase Desiccant is dehydrated, filtered to remove the desiccant, and the extraction solvent is removed in a vacuum at a temperature of -100°C to 30°C to obtain a volatile extract with bactericidal activity of parasite; the extractant used in distillation extraction selected from esters, ketones, ethers, chlorinated alkanes, aromatics or alkanes.

[0015] As a further preference, the extractant is a mixture of ethyl acetate and ether.

[0016] As a further preference, the desiccant is ...

Embodiment 1

[0030] The shade-dried leaves of the antipyretic ash tree were pulverized at 0°C at low temperature, and 100.0g of the powder sample was accurately weighed, and put into a 1000mL retort of a simultaneous distillation extraction device (SDE) (SDE), and 300mL of ultrapure water was added, and a small amount of Glass beads, add 50mL of ethyl acetate and diethyl ether extraction solvent into the receiving bottle of 250mL simultaneous distillation extraction device (SDE), heat and reflux at 150°C for 6 hours, cool to room temperature, and let stand to separate Layer, collect the organic phase, add 20g of anhydrous sodium sulfate and anhydrous calcium chloride for dehydration for 30min, filter the filtrate, rinse the filter cake with 10 times the volume of ether once, combine the filtrate, and freeze the filtrate at -20 Remove the ethyl acetate and ether at ℃ to obtain the volatile extract of Paracetin.

Embodiment 2

[0032]The shade-dried leaves of the antipyretic ash tree were pulverized at -5°C at a low temperature, and 100.0g of the powder sample was accurately weighed, put into a 1000mL retort of a simultaneous distillation extraction device (SDE) (SDE), added 300mL of ultrapure water, and added A small amount of glass beads, add 50mL of extraction solvent of chloroform and diethyl ether to the receiving bottle of 250mL Simultaneous Distillation and Extraction Device (SDE) (SDE), heat and reflux at 50°C for 72 hours, cool to room temperature, let stand and separate , collect the organic phase, add 30g of anhydrous magnesium sulfate and 5A molecular sieves to dehydrate for 50min, filter the organic phase, rinse the filter cake with 10 times the volume of ether for 1 time to get the filtrate, combine the filtrate and the organic phase, and then put it in a vacuum freeze dryer. Chloroform and ether were removed at -100°C to obtain the volatile extract of Paracetin.

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 discloses a volatile extract with bactericidal activity in fraxinus hupehensis and a bactericidal composition thereof. The extract is prepared by the following method: after carrying out crushing treatment on roots, stems, leaves, flowers and/or seeds of the fraxinus hupehensis at -5 DEG C to 0 DEG C; adding crushed materials into a simultaneous distillation-extractor (SDE) and carrying out distillation and extraction at a temperature of 50 DEG C to 150 DEG C for 1h-72h; cooling to room temperature and standing and layering; taking an organic phase and dehydrating the organic phase with a drying agent; filtering to remove the drying agent, and removing an extracting solvent in vacuum at a temperature of -100 DEG C to 30 DEG C to obtain the volatile extract with the bactericidal activity in the fraxinus hupehensis, wherein an extracting agent used in a distillation and extraction process is selected from ester, ketone, ether, chloralkane, aromatic hydrocarbon or alkane. The volatile extract disclosed by the invention has wide-spectrum insecticidal and bactericidal activity and can be used for preventing and treating diseases and insect pests including rice sheath blight, wheat head blight, potato early blight, walnut root rot disease, rape sclerotinia rot and the like.

Description

technical field [0001] The invention relates to the technical field of biopesticides, in particular to a volatile extract with bactericidal activity in Paraptera and a bactericidal composition thereof. Background technique [0002] Pesticides are an important means of production in modern agriculture and play an indispensable role in ensuring high-quality and high-yield crops. my country is a big agricultural country, how to use my country's arable land area accounting for only 7% of the world to feed my country's population accounting for 22% of the world's total population is the primary task of my country's national economy. Chemical pesticides play an important role in agricultural production, but due to long-term unreasonable use, 3R (Resistance, Resurgence, Residue) phenomenon occurs, which brings hidden dangers to the ecological environment and human health. Today, people have higher requirements for the environment and urgent needs for food safety, making the ration...

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 Applications(China)
IPC IPC(8): A01N65/08A01P3/00A01P7/00
Inventor 吴清来张良菊李俊凯徐会会
Owner YANGTZE 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