A nano-microcapsule suitable for carrying Scleroderma sichuanensis and its preparation method

A technology of nano-microcapsules and scleroderma, applied in botany equipment and methods, chemicals for biological control, pesticides, etc., can solve the problems of limited use of biological control microcapsules and limited effect of biological control , to achieve the effect of improving the adhesion effect, completely killing the bacteria, and enhancing the adhesion

Active Publication Date: 2021-10-08
SICHUAN AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, slow-release microcapsules containing Beauveria bassiana spore powder are generally used for application, so that Beauveria bassiana can infiltrate pests to achieve biological control. It is said that it is difficult to be impregnated. Therefore, there are certain restrictions on the use of existing biological control microcapsules, and the effect of biological control is limited.

Method used

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  • A nano-microcapsule suitable for carrying Scleroderma sichuanensis and its preparation method
  • A nano-microcapsule suitable for carrying Scleroderma sichuanensis and its preparation method
  • A nano-microcapsule suitable for carrying Scleroderma sichuanensis and its preparation method

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Embodiment 1

[0030] A preferred embodiment of the present invention provides a method for preparing nanometer microcapsules suitable for Scleroderma sichuanensis, comprising the following steps:

[0031] Add chitosan to the shell solution, then mix it evenly with the core solution at 1000r / min, then add the mixture dropwise to the edible oil until a W / O emulsion is formed, then add 1wt% sodium chloride cross-linking agent Cross-linked and solidified, cleaned, dried, and obtained; wherein, the shell layer solution is a sodium alginate solution with a concentration of 1% by weight; the core layer solution is a sodium alginate solution with a concentration of 1×10 7 cfu / mL Beauveria bassiana spore powder suspension; Chitosan solution obtained by dissolving chitosan in 0.3wt% dilute acetic acid solution; Quality of sodium alginate solution, Beauveria bassiana spore powder suspension and chitosan solution The ratio is 30:70:1.

Embodiment 2

[0033] Only the concentration of sodium alginate solution is 3wt%, the rotating speed is 500r / min, and the concentration of sodium chloride is 3wt%; the others are the same as in Example 1.

Embodiment 3

[0035] Only the concentration of sodium alginate solution is 5wt%, the rotating speed is 1500r / min, and the concentration of sodium chloride is 5wt%; the others are the same as in Example 1.

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Abstract

The invention discloses a nanometer microcapsule suitable for carrying Scleroderma sichuanensis and a preparation method thereof. The preparation method comprises the following steps: adding chitosan to the shell layer solution, and then uniformly mixing with the core layer solution, and then mixing the mixed Add liquid dropwise to edible oil until W / O emulsion is formed, then add cross-linking agent to cross-link and solidify, wash, and dry to get final product; wherein, the shell solution is sodium alginate solution or sodium carboxymethyl cellulose solution or poly Mixed solution of vinyl alcohol and sodium alginate; nuclear layer solution is suspension of Beauveria bassiana spore powder. The invention prepares a nano-microcapsule capable of releasing Beauveria bassiana infested pests, which is especially suitable for carrying Scleroderma sichuanensis, and can carry the nano-microcapsule to a position that is difficult to reach by conventional application methods, and plays a good role. Insecticidal effect.

Description

technical field [0001] The invention belongs to the technical field of nano-microcapsules, and in particular relates to a nano-microcapsule suitable for carrying Scleroderma sichuanensis and a preparation method thereof. Background technique [0002] With the advancement of my country's ecological civilization construction, reducing the use of chemical pesticides has become an inevitable trend, and environmentally friendly biological control technologies are more popular. Beauveria bassiana is a broad-spectrum pathogenic fungus, which has good insecticidal activity against a variety of Lepidoptera, Coleoptera, and Hemiptera pests. Biological control of caterpillars, etc. [0003] At present, slow-release microcapsules containing Beauveria bassiana spore powder are generally used for application, so that Beauveria bassiana can infiltrate pests to achieve biological control. It is said that it is difficult to be impregnated. Therefore, there are certain limitations in the us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/30A01N25/10A01N25/28A01P7/00A01P7/04
CPCA01N25/10A01N25/28A01N63/30
Inventor 杨桦杨伟吴晓莉罗伟黄琼
Owner SICHUAN AGRI UNIV
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