Insect virus and sex pheromone microcapsule and preparation method thereof

A technology of insect virus and pheromone, applied in the field of insect virus and sex pheromone microcapsule and its preparation

Inactive Publication Date: 2021-06-04
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Combining insect viruses and sex pheromones into insecticides through microencapsulation has not been reported yet

Method used

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  • Insect virus and sex pheromone microcapsule and preparation method thereof
  • Insect virus and sex pheromone microcapsule and preparation method thereof

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preparation example Construction

[0042] A method for preparing insect virus and sex pheromone microcapsules, the preparation method comprising: uniformly mixing microcapsules containing insect virus and insect sex pheromone to obtain a mixture, mixing the mixture with a chitosan solution, and filtering to obtain Insect virus and sex pheromone microcapsules. It can be that the microcapsules containing insect virus and the insect sex pheromone solution are uniformly mixed to obtain a mixed solution, the mixed solution is mixed with a chitosan solution, and filtered to obtain insect virus and sex pheromone microcapsules;

[0043] It can be that the mixture is added into the chitosan solution, stirred, and the chitosan coating of the microcapsules (complete coating by electrostatic bonding), filtration (can be centrifugal filtration three times), to obtain insect virus and sex pheromone microenvironment. capsule.

[0044] In the present invention, the insect virus may be an insect virus capable of infecting inse...

Embodiment 1

[0054] A preparation method of insect virus and sex pheromone microcapsules, comprising the following steps:

[0055] Step 1: Add 0.04g of insect virus dry powder to 30mL of milk fat powder water mixture containing whey protein, stir and mix evenly to form mixture A;

[0056] Step 2: Add mixture A to 63.5mL sodium alginate solution, stir and mix evenly to form mixture B;

[0057] Wherein, in mixture B, the mass fraction of milk fat powder containing whey protein is 4%, and the mass fraction of sodium alginate is 2.5%;

[0058] Step 3: Take mixture B and spray all of mixture B into the calcium chloride solution, and stir while spraying to obtain mixture C; specifically, use the peristaltic pump of the spray dryer to absorb at a speed of 2.5-5mL / min Mixture B, the feed liquid is atomized by a nozzle with an inner diameter of 0.5 mm, and 800-3000 mL of calcium chloride solution with a mass fraction of 2% is placed under the nozzle. The calcium chloride solution is equipped with ...

Embodiment 2

[0064] A preparation method of insect virus and sex pheromone microcapsules, comprising the following steps:

[0065] Step 1: Add 0.04g of insect virus dry powder to 30mL of milk fat powder water mixture containing whey protein, stir and mix evenly to form mixture A;

[0066] Step 2: Add mixture A to 65mL sodium alginate solution, stir and mix evenly to form mixture B;

[0067] Wherein, in mixture B, the mass fraction of milk fat powder containing whey protein is 4%, and the mass fraction of sodium alginate is 1%;

[0068] Step 3: Take mixture B and spray all of mixture B into the calcium chloride solution, and stir while spraying to obtain mixture C; specifically, use the peristaltic pump of the spray dryer to absorb at a speed of 2.5-5mL / min For mixture B, the feed liquid is atomized by a nozzle with an inner diameter of 0.5 mm, and 800-3000 mL of calcium chloride solution with a mass fraction of 2% is placed under the nozzle. The calcium chloride solution is equipped with ...

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Abstract

The invention relates to the technical field of biopesticides, in particular to an insect virus and sex pheromone microcapsule and a preparation method thereof. The preparation method of the microcapsule comprises the following steps: uniformly mixing the insect virus-containing microcapsule and the insect sex pheromone to obtain a mixture, mixing the mixture and a chitosan solution, and filtering to obtain the insect virus and sex pheromone microcapsule. The insect virus and sex pheromone microcapsule is safe and environment-friendly, can effectively attract insects, improves the insect killing efficiency, protects insect viruses from being inactivated by irradiation of sunlight, especially ultraviolet light, and prolongs the preservation time of a virus insecticide in the environment.

Description

technical field [0001] The invention relates to the technical field of biological pesticides, in particular to insect virus and sex pheromone microcapsules and a preparation method thereof. Background technique [0002] China is a big country in the production and consumption of pesticides, and people no longer only pay attention to the high toxicity and high efficiency of pesticides. Instead, the safety of pesticides for humans and their compatibility with the environment has been increasingly emphasized. For example, the large-scale use of pesticides has led to insect populations becoming resistant, which in turn requires the use of more pesticides, resulting in the reappearance of pesticides and pesticide residues in agricultural products, causing environmental pollution and ecological balance problems. [0003] Insect virus insecticide is made by artificially cultivating, collecting, purifying and processing specific insect virus. It adopts the new insecticidal concept ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N63/50A01N63/14A01N37/02A01N31/02A01P7/04A01P19/00B01J13/14
CPCA01N25/28A01N31/02A01N37/02A01N63/14A01N63/50B01J13/14
Inventor 蒲侠罗萌林俊涛周新华舒绪刚
Owner ZHONGKAI UNIV OF AGRI & ENG
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