Plant-derived self-emulsifying nano-insecticide as well as preparation method and application thereof

A kind of insecticide and nanotechnology, applied in the field of pesticides, can solve the problems that hinder the development and utilization of botanical pesticides, the content of effective active ingredients is low, and the production cost is high, so as to reduce production costs, improve biological activity, and improve product quality and output Effect

Inactive Publication Date: 2018-06-22
HUNAN UNIV OF SCI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some botanical pesticides have low content of effective active ingredients and high production costs, which hinder the further development and utilization of botanical pesticides.

Method used

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  • Plant-derived self-emulsifying nano-insecticide as well as preparation method and application thereof
  • Plant-derived self-emulsifying nano-insecticide as well as preparation method and application thereof
  • Plant-derived self-emulsifying nano-insecticide as well as preparation method and application thereof

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0023] A kind of plant is derived from emulsified nanopesticide, comprises the composition of following percentage by weight:

[0024] Ginkgo biloba testa ethanol crude extract 2% to 5%;

[0025] The mass ratio of solvent ethanol to the crude extract of ginkgo testa is 1:1;

[0026] Surfactant content is 2.5% to 3%;

[0027] The co-surfactant content is 2%-2.5%.

[0028] The surfactant is polyoxyethylene castor oil (Cremophor EL) or polyoxyethylene hydrogenated castor oil (Cremophor RH 40).

[0029] The co-surfactant is one of ethylene glycol, glycerin, n-butanol and polyethylene glycol 400 (PEG400).

[0030] The preparation method of above-mentioned insecticide comprises the following steps:

[0031] The nanoemulsion was prepared by the self-emuls...

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Abstract

The invention discloses a plant-derived self-emulsifying nano-insecticide as well as a preparation method and application thereof. The plant-derived self-emulsifying nano-insecticide is prepared fromthe following components: 2-5% of crude ethanol extract from ginkgo biloba exocarp, 2.5-3% of surface active agent and 2-2.5% of cosurfactant; the mass ratio of a solvent-ethanol to a ginkgo biloba exocarp crude extract is equal to 1 to 1. The application objects of the nano-insecticide are pests including lepidoptera plutella xylostella, armyworm, helicoverpa armigera, and the like. The plant-derived self-emulsifying nano-insecticide has the advantages that anhydrous self-emulsifying nanoemulsion is introduced into pesticide by adopting the natural surface active agent, so that the biologicalactivity of the natural product-derived pesticide can be effectively improved, and the production quality and yield are better improved; furthermore, the plant-derived self-emulsifying nano-insecticide reduces the production cost, has a control effect of higher than 90% for all the pests, and also has a control effect of higher than 90% for aphids.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a plant-derived emulsified nanopesticide, and also relates to a preparation method and application of the pesticide. Background technique [0002] With the development of the times, people's concept of environmental protection and food safety awareness are getting stronger and stronger, and "environmental protection, high efficiency, safety and economy" have become the main goals of pesticide research and development. Most of the biologically active pesticides are insoluble or slightly soluble in water, so they need to be processed into pesticide formulations in order to be more convenient to use and better exert their biological activity. The formulations commonly used in pesticide production in the past were emulsifiable concentrates and powders. The emulsifiable concentrate contains a large amount of organic solvents, such as methanol, toluene and xylene, which seriously p...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01N25/30A01N25/04A01P7/04
CPCA01N25/04A01N25/30A01N65/00Y02A50/30
Inventor 盘俊曾丽亚刘小文何福林李治章刘永昌陈小明胡克坚范贤哲李广凯
Owner HUNAN UNIV OF SCI & ENG
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