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Preparation method of pyrethroid degradable pesticide insecticide and pesticide insecticide prepared by method

A technology for pyrethroids and pesticide degradation, which is applied in the field of pesticides, can solve problems such as high cost, accumulation of pesticide residues, and difficult degradation of pesticides, and achieves the effects of easy operation, industrialization, and simple preparation methods

Inactive Publication Date: 2016-10-12
FOSHAN JUCHENG BIOCHEM TECH RES & DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing pesticides and insecticides are not easy to degrade, or need to add pesticide degrading agent to degrade pesticide residues, s

Method used

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  • Preparation method of pyrethroid degradable pesticide insecticide and pesticide insecticide prepared by method

Examples

Experimental program
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Effect test

Example Embodiment

[0023] The present invention provides a method for preparing a pyrethroid degradable pesticide insecticide, which is characterized in that the method comprises: a. Heating the biosorbent in an alcohol solution at 120-200°C for 1-10 hours and then drying , And pulverize to 100-500 nanometers to obtain biosorbent powder; b. Disperse the phosphatase in water at a concentration of 1000-10000 U / g to prepare an aqueous solution of phosphatase; c. The biosorbent obtained in step a The powder and the phosphatase aqueous solution are mixed at 25-35°C and stirred for 5-60 minutes, and the obtained suspension is filtered to obtain the enzyme adsorption powder; d. Dissolve vegetable glue in water to obtain the vegetable glue aqueous solution; e, step d The obtained vegetable glue aqueous solution is sprayed on the surface of the enzyme adsorption powder obtained in step c and then dried to obtain vegetable glue coated powder, wherein the mass ratio of vegetable glue to enzyme adsorption pow...

Example Embodiment

[0036] Example 1

[0037] a. Heat the chitosan in an alcohol solution at 120°C for 9 hours, then dry it and pulverize it to 300 nanometers to obtain a biosorbent powder; b. Disperse the extracted phosphatase of cypermethrin degrading bacteria at a concentration of 3000 U / g Prepare phosphatase aqueous solution in water; c. Mix the biosorbent powder and phosphatase aqueous solution obtained in step a at 25°C and stir for 20 minutes, and the suspension obtained is filtered to obtain enzyme adsorption powder, biosorbent The mixing mass ratio of the powder and the aqueous solution of phosphatase is 1:1; d. Dissolve couma gum in water to obtain an aqueous solution of vegetable glue with a concentration of 3% by mass; e. The aqueous solution of vegetable glue obtained in step d is sprayed in step c The surface of the obtained enzyme adsorption powder is dried to obtain a vegetable gum coated powder, wherein the mass ratio of the vegetable gum to the enzyme adsorption powder is 1:0.04; f...

Example Embodiment

[0038] Example 2

[0039] a. Heat the cellulose in an alcohol solution at 200°C for 2 hours, then dry, and pulverize to 500 nanometers to obtain a biosorbent powder; b. Extract the phosphatase of fenpropathrin degrading bacteria at 10000 U / g Disperse the concentration in water to prepare an aqueous solution of phosphatase; c. Mix the biosorbent powder and the aqueous phosphatase solution obtained in step a at 35°C and stir for 40 minutes, and the suspension obtained is filtered to obtain enzyme adsorption powder. The mixing mass ratio of the adsorbent powder and the aqueous phosphatase solution is 1:5; d. Dissolve flax gum in water to obtain an aqueous solution of vegetable glue with a concentration of 5% by mass; e. Spray the aqueous solution of vegetable glue obtained in step d in step c The surface of the enzyme adsorption powder obtained in step e is dried to obtain a vegetable gum coated powder, wherein the mass ratio of the vegetable gum to the enzyme adsorption powder is 1...

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Abstract

The invention relates to a preparation method of a pyrethroid degradable pesticide insecticide and the pesticide insecticide prepared by the method. The method includes the steps: a, heating a biosorbent in an alcohol solution, then drying, and crushing, to obtain a biosorbent powder; b, dispersing phosphatase in water, to prepare a phosphatase aqueous solution; c, mixing and stirring the biosorbent powder obtained in the step a and the phosphatase aqueous solution, and filtering an obtained suspension, to obtain an enzymatic adsorption powder; d, dissolving plant gum in water, to obtain a plant gum aqueous solution; e, spraying the surface of the enzymatic adsorption powder obtained in the step c with the plant gum aqueous solution obtained in the step d, and drying, to obtain a plant gum-coated powder; and f, dispersing the plant gum-coated powder obtained in the step e in a pyrethroid insecticide, to obtain the pyrethroid degradable pesticide insecticide. The pesticide insecticide prepared by the method not only has the function of killing insects, but also has high degradation rate.

Description

Technical field [0001] The invention relates to the field of pesticides, in particular to a method for preparing a pyrethroid degradable pesticide pesticide and a pesticide pesticide prepared by the method. Background technique [0002] Pesticides can be used to kill insects, fungi and other organisms that harm crop growth. The earliest pesticides used are DDT, BHC, etc., which can eliminate pests in large quantities. But they have good stability, can exist in the environment for a long time, and accumulate in animals, plants and human body, so they are eliminated. Later, organic phosphorus pesticides, such as dichlorvos, were used instead of the original pesticides. However, they contain phosphorus, which can easily cause eutrophication of aquatic organisms. [0003] Chinese patent CN104472480A discloses a composition for degrading pesticide residues, and its active ingredient is composed of the following components by weight: 1 part of seaweed polysaccharide, 0.05-20 parts of ...

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N53/06A01N25/32A01P7/04
CPCA01N53/00A01N25/32A01N2300/00
Inventor 不公告发明人
Owner FOSHAN JUCHENG BIOCHEM TECH RES & DEV CO LTD
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