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Capsaicin microcapsule insecticide and preparation method thereof

A technology of microcapsules and capsaicin, applied in pesticides, botanical equipment and methods, biocides, etc., can solve the problems of single core material, no direct effect of wall material, single effect, etc. The effect of reducing the number of applications and reducing the amount of use

Inactive Publication Date: 2021-12-10
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the core research of microcapsules is mainly the selection of the core material. The wall material has no direct effect on the growth of crops, and the core material has a single component, and its role in the plant growth process is relatively simple.

Method used

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  • Capsaicin microcapsule insecticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] S11: using supercritical fluid extraction to extract capsaicin in pepper;

[0032] The supercritical fluid extraction technology has been disclosed. The supercritical fluid extraction method has some characteristics of rectification and liquid-liquid extraction. It uses low-temperature CO 2 As an extraction agent, it can effectively prevent the oxidation and dissipation of heat-sensitive substances; in addition, it can extract high-boiling point, low-volatility, and pyrolyzable substances below their boiling point temperature; moreover, the whole process of supercritical fluid extraction does not use Organic solvents, so there is no residual solvent in the extract, and it also prevents the poisoning of the human body and the pollution of the environment during the extraction process.

[0033] S12: 14g gelatin is dissolved in 2800mL distilled water to form a gelatin solution, 2g CMC is dissolved in 400mL distilled water to form a CMC solution, and the gelatin solution an...

Embodiment 2

[0043] S21: Extracting capsaicin from peppers by supercritical fluid extraction;

[0044] S22: 20g gelatin is dissolved in 2000mL distilled water to form a gelatin solution, 2g CMC is dissolved in 200mL distilled water to form a CMC solution, and the gelatin solution and the CMC solution are mixed to form a mixed solution;

[0045] S23: Add 22 g of extracted capsaicin to the mixed solution and complete the emulsification reaction at a speed of 10000 r / min in a tissue grinder to form a first emulsion, and the reaction time of the reaction is 2.5 minutes;

[0046] S24: adjusting the pH of the first emulsion to 4.7 with 10% acetic acid solution and reacting for 40 minutes at 45° C. with a stirring speed of 400 r / min to form a second emulsion.

[0047] S25: under the conditions of step S24, adding 1.54 g of urea to the second emulsion to form a third emulsion;

[0048] S26: Cool the third emulsion to 15°C in an ice-water bath, use 10% sodium hydroxide solution to adjust the pH to...

Embodiment 3

[0051]S31: Extracting capsaicin from peppers by supercritical fluid extraction;

[0052] S32: 22g gelatin is dissolved in 1100mL distilled water to form a gelatin solution, 2g CMC is dissolved in 100mL distilled water to form a CMC solution, and the gelatin solution and the CMC solution are mixed to form a mixed solution;

[0053] S33: Add 32 g of extracted capsaicin to the mixed solution and complete the emulsification reaction at a speed of 8000 r / min in a tissue grinder to form a first emulsion;

[0054] S34: adjusting the pH of the first emulsion to 5 with 10% acetic acid solution and reacting for 40 minutes at 50° C. with a stirring speed of 500 r / min to form a second emulsion.

[0055] S35: under the conditions of step S34, add 2.4 g of oxamide to the second emulsion to form a third emulsion;

[0056] S36: Cool the third emulsion in an ice-water bath to 14°C, use 10% sodium hydroxide solution to adjust the pH to neutral, then add transglutaminase, whose mass percentage ...

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Abstract

The invention discloses a capsaicin microcapsule pesticide and a preparation method thereof. The capsaicin microcapsule pesticide comprises a core material taking capsaicin as a botanical pesticide, and a wall material coating the core material and taking gelatin and CMC serve as raw materials, wherein the wall material contains a micromolecular nitrogen-containing compound. The botanical microcapsule insecticide disclosed by the invention not only has the advantages of good insecticidal effect and long pesticide effect, but also has the effect of a plant fertilizer.

Description

technical field [0001] The invention relates to the field of biological source pesticides, in particular to a capsaicin microcapsule insecticide and a preparation method thereof. Background technique [0002] The use of chemical pesticides to increase the yield and harvest of agricultural crops has a history of nearly a hundred years, and it has played an indelible role in human progress and social development. However, while traditional chemical pesticides play a positive role in increasing agricultural production, resisting insects and inhibiting bacteria, their negative effects are becoming increasingly prominent. Chemical pesticides are generally highly toxic. After use, they often cause pesticide residues, and the residual chemical substances will have a non-negligible impact on human health. [0003] Plant-derived green pesticides are active substances with anti-insect and anti-bacterial effects made by extracting plant roots, stems, leaves, flowers, fruits, seeds, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/18A01N25/28A01P7/04C05G5/35C05G3/60
CPCA01N37/18A01N25/28C05G5/35C05G3/60C05C9/00C05C11/00Y02P20/54
Inventor 陈宏伟张小轩吕海光钱贞舟冯晶
Owner SUZHOU UNIV OF SCI & TECH
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