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Botanical pesticide and preparation method thereof

A plant-derived insecticide and solvent technology, applied in the field of pesticides, can solve the problems of low extraction rate of active ingredients and the use of extraction technology for active ingredients, etc., to achieve significant insecticidal effects, enhance insecticidal effects, and reduce losses

Inactive Publication Date: 2017-03-15
ZHENGZHOU SIBIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the present invention does not adopt suitable extraction process according to the active ingredient of each raw material, and the extraction rate of effective ingredient is low

Method used

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  • Botanical pesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A botanical insecticide comprises the following raw materials in parts by weight: 40 parts of tripterygium wilfordii, 50 parts of crape myrtle, 20 parts of star anise, 30 parts of purslane, 1 part of emulsifier, 6 parts of solvent and 80 parts of water.

[0025] Wherein the solvent is ethyl acetate.

[0026] The emulsifier is a compound of Nongru 600 and Tween-80 at a weight ratio of 1:10.

[0027] The preparation method of botanical insecticide comprises the following steps:

[0028] (1) Weigh tripterygium wilfordii, purslane and crape myrtle, crush them to 80 mesh, add 5 times the weight and volume fraction of 75% ethanol solution to soak for 1 hour, and ultrasonically extract once. The power of ultrasonic extraction is 500W, and the extraction time is for 50 min, then filter the combined filtrates, concentrate under reduced pressure until the drug content is 1.0 g / mL, and obtain the extract Ⅰ;

[0029] (2) Weigh star anise, crush it to 100 mesh, add 8 times the wei...

Embodiment 2

[0032] A botanical insecticide comprises the following raw materials in parts by weight: 42 parts of tripterygium wilfordii, 48 parts of crape myrtle, 22 parts of star anise, 28 parts of purslane, 2 parts of emulsification, 7 parts of solvent and 85 parts of water.

[0033] Wherein the solvent is isopropanol.

[0034] The emulsifier is a compound of Nongru 600 and Tween-80 at a weight ratio of 1:5.

[0035] The preparation method of botanical insecticide comprises the following steps:

[0036] (1) Weigh tripterygium wilfordii, purslane and crape myrtle, crush them to 90 mesh, add 6 times the weight and volume fraction of 80% ethanol solution to soak for 1.5 hours, and extract twice by ultrasonic wave, in which the power of ultrasonic extraction is 550W, extract The time is 45 minutes, and then the combined filtrates are filtered and concentrated under reduced pressure to a drug content of 1.2 g / mL to obtain the extract Ⅰ;

[0037] (2) Weigh star anise, crush it to 90 mesh, a...

Embodiment 3

[0040] A botanical insecticide comprises the following raw materials in parts by weight: 43 parts of tripterygium wilfordii, 46 parts of crape myrtle, 23 parts of star anise, 26 parts of purslane, 3 parts of emulsifier, 8 parts of solvent and 90 parts of water.

[0041] Wherein the solvent is ethylene glycol.

[0042] The emulsifier is a compound of Nongru 600 and Tween-80 at a weight ratio of 3:10.

[0043] The preparation method of botanical insecticide comprises the following steps:

[0044] (1) Weigh tripterygium wilfordii, purslane and crape myrtle, crush them to 100 mesh, add 7 times the weight and volume fraction of 85% ethanol solution to soak for 2 hours, and ultrasonically extract twice. The power of ultrasonic extraction is 600W, and the extraction time is for 40 min, then filter the combined filtrates, concentrate under reduced pressure until the drug content is 1.3 g / mL, and obtain the extract Ⅰ;

[0045] (2) Weigh star anise, crush it to 80 mesh, add 10 times t...

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Abstract

The invention discloses a botanical pesticide. The botanical pesticide is prepared from, by weight, 40-50 parts of common threewingnut roots, 40-50 parts of common crapemyrtle flowers, 20-30 parts of star anise, 20-30 parts of herba portulacae, 1-5 parts of an emulsifying agent, 6-10 parts of a solvent and 80-100 parts of water. According to the botanical pesticide, all the raw materials achieve a synergistic effect and complement one another with advantages, a significant effect is achieved on pests such as cotton bollworm, aphids, cabbage worms, plutella xylostella and helicoverpa assulta, no pesticide resistance or residue or pollution is generated, the preparation method is simple, the cost is low, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a botanical pesticide and a preparation method thereof. Background technique [0002] Botanical pesticides refer to pesticides that use biologically active plants or specific parts thereof, and rough process or extract their active ingredients to make preparations for the prevention and control of harmful organisms. As an important part of biopesticides, botanical pesticides are highly effective, low-toxic or non-toxic, low-residue, high-selectivity, it is generally difficult for harmful substances to develop resistance to them, and they are easy to mix with other pesticides. It has the advantages of low cost, no pollution to the environment, independent degradation pathway, and safety to humans and animals. It is widely valued by pesticide research and application departments all over the world, and it is an important aspect of pesticide research and development today. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/14A01P7/04
CPCA01N65/00A01N65/14A01N2300/00
Inventor 丁艺涵马新攀马成耀郭便荣
Owner ZHENGZHOU SIBIAN TECH CO LTD
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