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Pesticide composition and application thereof

A pesticide composition and the technology of the composition are applied in the field of pesticides to achieve the effects of realizing resources, promoting sustainable development, and realizing full utilization

Inactive Publication Date: 2018-02-06
LIER CROPSCIENCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at present, there is still a lot of room for improvement in the composition using the extract of Polygonum cuspidatum for the prevention and treatment of plant diseases, and its drug efficacy still needs to be improved.

Method used

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  • Pesticide composition and application thereof
  • Pesticide composition and application thereof
  • Pesticide composition and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Pulverization: pulverize the raw material of Polygonum cuspidatum to 8-10 mesh, set aside;

[0032] (2) Extraction: Add 70% ethanol solution at a solid-to-liquid ratio of 5:1 and reflux extraction at 80°C for 3 times, the first two times for 1.5 hours, the third time for 1 hour, combine the extracts and concentrate under reduced pressure, and recover the extracts Ethanol to obtain the concentrated solution of Polygonum cuspidatum extract;

[0033] (3) Enzymolysis: Polygonum cuspidatum extract concentrated solution is sent into fermenter, under the condition of warm water, fermented with hydrolytic biological enzyme for 4 days, in described fermentation step, the addition amount of hydrolytic biological enzyme is 0.5%, the temperature control of fermentation process at 35°C;

[0034] (4) Extract the Polygonum cuspidatum extract through enzymolysis with 3 times the amount of ethyl acetate three times, and collect the extract and raffinate;

[0035] (5) Concentration o...

Embodiment 2

[0039] (1) Pulverization: pulverize the raw material of Polygonum cuspidatum to 8-10 mesh, set aside;

[0040] (2) Extraction: Add 70% ethanol solution at a solid-to-liquid ratio of 5:1 and reflux extraction at 80°C for 3 times, the first two times for 1.5 hours, the third time for 1 hour, combine the extracts and concentrate under reduced pressure, and recover the extracts Ethanol to obtain the concentrated solution of Polygonum cuspidatum extract;

[0041] (3) Acidolysis: send the concentrated solution of Polygonum cuspidatum extract into a hydrolysis tank, add dilute hydrochloric acid to catalyze the reaction for 6 hours, in the acidolysis step, the amount of acid added is 1.5%, and the temperature of acidolysis is controlled at 60°C;

[0042] (4) Extract the Polygonum cuspidatum extract through acid hydrolysis with 3 times the amount of ethyl acetate three times, and collect the extract and raffinate;

[0043] (5) Concentration once: Concentrate the ethyl acetate extract ...

Embodiment 3

[0047] (1) Pulverization: pulverize the raw material of Polygonum cuspidatum to 8-10 mesh, set aside;

[0048] (2) adding 3 times the amount of ethyl acetate to extract three times at 55°C, each time for 0.5 hours, to obtain an extract;

[0049] (3) Concentrating the extract under reduced pressure to recover the solvent, then adding 2 times the amount of water, adding 1% of Aspergillus niger with a bacterial age of 40 h, and fermenting at 40° C. for 48 hours to obtain a fermented liquid;

[0050] (4) Extract the Polygonum cuspidatum extract fermented by Aspergillus niger with dichloromethane 6 times the weight of the raw material and stir for 10 hours at a temperature of 30°C;

[0051] (5) Filtration and concentration: filter the extract, concentrate and dry to obtain a crude extract solid, then dissolve and filter with saturated isobutanol to obtain a filtrate;

[0052] (6) Adsorb the filtrate obtained in 5 with a polyamide resin, collect the effluent after the adsorption is...

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Abstract

The invention discloses pesticide composition and an application thereof and relates to the technical field of pesticide compounding. The composition is derived from polygonaceae polygonum cuspidatum.An extraction process of the composition comprises the steps as follows: 1) treatment: rhizomes of polygonum cuspidatum are crushed to be in a certain particle size, the polygonum cuspidatum is subjected to extraction with an extraction solvent, and a polygonum cuspidatum crude extract is obtained; 2) treatment: the polygonum cuspidatum crude extract in step 1) is subjected to acid hydrolysis, enzymolysis or microbial fermentation conversion treatment; 3) separation: the treated polygonum cuspidatum crude extract in step 2) is subjected to partial or complete separation of resveratrol, the solvent in residues obtained after separation is partially or completely removed, and the pesticide composition is obtained. Research finds that the components of the composition obtained after glycoside ligand is converted into non-glycoside ligand through acid hydrolysis, enzymolysis or microbial fermentation conversion become simple, stability of all components in the composition is guaranteed, and the utilization rate of the polygonum cuspidatum extract is increased.

Description

technical field [0001] The invention relates to a pesticide composition and its application, in particular to a pesticide composition obtained by extracting, processing and separating resveratrol from Polygonum cuspidatum and its application, and belongs to the technical field of pesticides. Background technique [0002] With the global attention to resources and the environment, the sustainable development strategy has become the theme of the common response and recognition of all countries in the world. "Organic agriculture" and "green food" have become the direction of agricultural development. Biogenic pesticides whose residues are harmonious with the environment have gradually become a new direction of pesticide research. At present, the development and application of botanical pesticides using natural secondary metabolites is an important direction and research hotspot in the creation of biopesticides. However, in actual production, there are often problems such as li...

Claims

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Application Information

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IPC IPC(8): A01N31/16A01P1/00A01P3/00C07C37/68C07C39/21C12P7/22
Inventor 梁灵侯燕华殷勇左元明杨晓清白珂珂王兴伍邱丰
Owner LIER CROPSCIENCE CO LTD
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