Mongolian oak wood vinegar extract, preparation method and application thereof and harmless insecticide

A technology of oak wood vinegar and extract, which is applied in botany equipment and methods, insecticides, biocides, etc., can solve the problems of destroying the ecosystem and polluting the environment with chemical pesticides, so as to achieve no environmental pollution and no damage The effect of ecological balance

Active Publication Date: 2016-06-08
抚顺市世纪东方生物质综合技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical pesticides pollute the environment and seriously damage the ecosystem. The high residues in agricultural by-products pose a direct threat to human

Method used

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  • Mongolian oak wood vinegar extract, preparation method and application thereof and harmless insecticide
  • Mongolian oak wood vinegar extract, preparation method and application thereof and harmless insecticide
  • Mongolian oak wood vinegar extract, preparation method and application thereof and harmless insecticide

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preparation example Construction

[0054] The embodiment of the present application also provides the oak wood vinegar liquid extract prepared by the method for preparing the oak wood vinegar liquid extract.

[0055] The embodiment of the present application also provides the use of the above-mentioned eucalyptus wood vinegar extract as an insecticide.

[0056] In the embodiment of the present application, the oak wood vinegar extract can be used for the control of insects against cotton bollworm, beet armyworm, diamondback moth and Spodoptera litura.

[0057] The embodiment of the present application also provides a pollution-free insecticide, which may contain the above-mentioned eucalyptus wood vinegar extract and water.

[0058] In the implementation manner of the present application, the concentration of the oak wood vinegar liquid extract in the insecticide may be 10-20 mg / mL.

[0059] In the embodiment of the present application, the crude product of wood vinegar can be a conventional source known to th...

Embodiment 1

[0062] 1. Preparation of oak wood vinegar crude product

[0063] Press 200kg of oak wood sawdust into 40cm×5cm×5cm wood strips, carbonize at 650°C, the steam generated during the process is led out from the conduit, after two-stage cooling, wash with alkaline water, collect the liquid, and obtain 40kg crude oak wood vinegar.

[0064] 2. Preparation of oak wood vinegar extract

[0065] a. The crude oak wood vinegar with a volume of 1 L was distilled under reduced pressure for 120 min at a pressure of -0.1 MPa and a temperature of 60° C. to obtain the first dark-colored fluid;

[0066] b. Dissolving the first dark fluid in water to obtain a first turbid liquid, suction filtering the first turbid liquid to remove insoluble particles in the first turbid liquid to obtain 500 mL of a second dark liquid;

[0067] c. Extract the second dark liquid with chloroform, use 500 mL of chloroform for each extraction, extract 3 times, collect the chloroform layer, and remove the chloroform l...

Embodiment 2

[0073] 1. Preparation of oak wood vinegar crude product

[0074] Press 200kg of oak wood sawdust into 40cm×5cm×5cm wood strips, carbonize at 650°C, the steam generated in the process is led out from the conduit, after secondary cooling, wash with alkaline water, collect the liquid, and get 40kg of oak wood vinegar crude product.

[0075] 2. Preparation of oak wood vinegar extract

[0076] a. The crude oak wood vinegar with a volume of 1 L was distilled under reduced pressure for 180 min at a pressure of -0.085 MPa and a temperature of 55° C. to obtain the first dark liquid;

[0077] b. Dissolving the first dark liquid in water to obtain a first turbid liquid, and suction filtering the first turbid liquid to remove insoluble particles in the first turbid liquid to obtain 500 mL of a second dark liquid;

[0078] c. Extract the second dark liquid with dichloromethane, use 500mL dichloromethane for each extraction, extract 3 times, collect the dichloromethane layer, and store th...

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Abstract

The invention discloses Mongolian oak wood vinegar extract and a preparation method thereof. The Mongolian oak wood vinegar extract is prepared from, by weight, 50-70% of phenols, 20-30% of ethers, 5-15% of aldehydes, 2-6% of ketone and the balance impurities. The method includes the steps that a Mongolian oak wood vinegar crude product is subjected to reduced pressure distillation to obtain first deep color liquid; the first deep color liquid is dissolved in water, insoluble particles are removed, and then second deep color liquid is obtained; the second deep color liquid is extracted with organic solvent, an organic solvent layer after extraction is collected, the organic solvent is removed through reduced pressure distillation, and then third deep color liquid is obtained; the third deep color liquid is dissolved in water, insoluble particles are removed, and fourth deep color liquid is obtained; selectively, water is removed from the fourth deep color liquid, and then fifth deep color liquid is obtained.

Description

technical field [0001] This application relates to but not limited to the technical field of pesticide production, and specifically relates to but not limited to an oak wood vinegar extract, its preparation method and application, and a pollution-free pesticide. Background technique [0002] Pesticides are an important factor in ensuring a good crop harvest. However, chemical pesticides pollute the environment and seriously damage the ecosystem. The high residues in agricultural by-products pose a direct threat to human life. Chemical pesticide pollution has become a global public hazard. Therefore, we must strike a balance between agricultural development, the environment and health. Pollution-free and residue-free organic pesticides are a very good choice. Contents of the invention [0003] The application provides a kind of eucalyptus wood vinegar extract. [0004] The oak wood vinegar liquid extract provided by the application comprises 50-70% by weight of phenols, 2...

Claims

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Application Information

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IPC IPC(8): A01N61/00A01P7/04
CPCA01N61/00
Inventor 鹿岩陈清西余新元陈振雄王祥东赵春江田成文
Owner 抚顺市世纪东方生物质综合技术开发有限公司
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