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Extracts with bactericidal activity from paraffin wax and their bactericidal compositions

A technology of bactericidal activity and extract, applied in the directions of fungicides, biocides, insecticides, etc., to achieve the effect of broad-spectrum bactericidal activity and significant bactericidal inhibitory effect

Active Publication Date: 2020-07-17
YANGTZE UNIVERSITY
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  • 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

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  • Extracts with bactericidal activity from paraffin wax and their bactericidal compositions
  • Extracts with bactericidal activity from paraffin wax and their bactericidal compositions
  • Extracts with bactericidal activity from paraffin wax and their bactericidal compositions

Examples

Experimental program
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Effect test

preparation example Construction

[0014] An extract with bactericidal activity in Paracetonia of the present invention is characterized in that: the extract is prepared by the following method: after pulverizing the roots, stems, leaves, flowers and / or seeds of Paracetonia , extract with leaching agent at room temperature to obtain extract, multiple extractions can be carried out to improve the extraction efficiency, the extract is concentrated under reduced pressure to no solvent to obtain crude extract, the crude extract is diluted with distilled water and then extracted with extractant Multiple extractions to obtain the extract, and after the extract is concentrated and dried, the bactericidal active extract of Paracetin is obtained; wherein, the leaching agent is selected from water, alcohol, ester, ketone, ether, chlorinated alkanes, aromatic hydrocarbons or alkanes ; The extractant is selected from esters, ketones, ethers, chlorinated alkanes, aromatics or alkanes.

[0015] As a further preference, the l...

Embodiment 1

[0029] Accurately weigh 1000g of the pulverized root, stem, leaf, flower and / or seed sample of the root, stem, leaf, flower and / or seed of the 1000g crushed white wax, and at room temperature, successively use 1500mL of anhydrous methanol and ethanol mixture for cold extraction for 3 days, 2 days, 1 day, Fully extract the extract from the leaves of the white wax tree, concentrate the extract under reduced pressure until it is evaporated without solvent, and obtain the crude extract of the white wax, dissolve and dilute the crude extract of the white wax with distilled water, and then use "liquid-liquid "Extraction method", first extract three times with petroleum ether, then extract three times with chloroform, and finally extract three times with ethyl acetate, concentrate the final extract under reduced pressure until it is evaporated without solvent, and dry it in a vacuum to obtain the bactericidal activity of paraffin wax. Extract.

Embodiment 2

[0031] Accurately weigh 1000g of the pulverized white wax sample, and at room temperature, use 1500mL of anhydrous methanol and 95% ethanol for cold soaking and extraction for 3 days, 2 days, and 1 day, and fully extract the extract from the leaves of the white wax tree out, the extract was concentrated under reduced pressure until it was evaporated without solvent, and the crude extract of paracetabola was obtained. Dissolve the crude extract of white wax in distilled water, extract it three times with ethyl acetate, absorb the final extract by D101 macroporous resin, then elute it with 30% ethanol until it is colorless, and collect the 30% ethanol eluate , Concentrated and dried to obtain the pigment, then eluted with 95% ethanol until colorless, collected the 95% ethanol eluate, concentrated and dried to obtain the extract with bactericidal activity of P.

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Abstract

The invention discloses extract having bactericidal activity from Fraxinus hubeiensis and a bactericidal composition comprising the same; the extract is prepared by: crushing root, stem, leaf, flower and / or seed of Fraxinus hubeiensis, extracting with a leaching agent at room temperature to obtain extracted material, concentrating the extracted material under reduced pressure until zero solvent is present to obtain crude extract, diluting the crude extract with distilled water, performing multiple extraction with an extracting agent to obtain liquid extract, concentrating the liquid extract, and drying to obtain the bactericidal activity extract from Fraxinus hubeiensis, wherein the leaching agent is selected from water, alcohols, esters, ketones, ethers, chloralkanes, arenes, or alkanes; the extracting agent is selected from esters, ketones, ethers, chloralkanes, arenes, or alkanes. The extract, as a compound, according to the invention has wide-spectral insecticidal and bactericidal activity, and has significant bacterial and inhibitory effects upon wheat scab, rice sheath blight, cotton boll rot, walnut root rot, potato early blight, apple altermaria leaf spot, ginseng black spot, cotton damping-off and the like.

Description

technical field [0001] The invention relates to the technical field of bio-pesticides, in particular to an extract with bactericidal activity from Parapterina peony 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 rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01P3/00A01P7/04
CPCA01N65/00A01N65/08Y02A50/30
Inventor 吴清来张良菊李俊凯徐会会
Owner YANGTZE UNIVERSITY
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