Insect pheromone slow-release agent and preparation method thereof

A technology of insect pheromone and slow-release agent, applied in the fields of botanical equipment and methods, pesticides, chemical instruments and methods, etc., can solve the problems of pheromone failure, abundance, pheromone isomerization, etc., and achieve excellent pore size The effect of structure, excellent specific surface area

Active Publication Date: 2021-08-17
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Activated carbon has excellent specific surface area and pore structure, strong adsorption and good biocompatibility, and is an ideal slow-release carrier. However, few people use activated carbon as a slow-release carrier for insect pheromones at present. The following technical problems need to be overcome: (1) It is difficult for activated carbon to fully cover the adsorbed pheromone, and light will cause pheromone isomerization; (2) The surface of activated carbon is rich in functional groups, which can easily promote the isomerization reaction of pheromone, resulting in Pheromone failure; (3) Pheromone is easily oxidized and degraded, resulting in failure

Method used

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  • Insect pheromone slow-release agent and preparation method thereof
  • Insect pheromone slow-release agent and preparation method thereof
  • Insect pheromone slow-release agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A preparation method of corn borer pheromone sustained-release agent, carried out as follows:

[0043] Step (1) Preparation of slow-release carrier

[0044] (1) High-temperature carbonization: Wash Uralia sativa, cut into sections, soak in ferric chloride solution with a concentration of 0.05%wt, stir at 450rpm for 40min, the mass ratio of Urami sativa to ferric chloride solution is 1:100, and dry After drying, crush and pass through a 200-mesh sieve, in H 2 and N 2 In a mixed atmosphere with an air flow ratio of 1:9, with a total air flow of 120mL / min, heat at 400°C for 2.5h to obtain Ulacao coarse charcoal;

[0045] (2) Activation: Add Uralia sativa coarse charcoal to 4%wt sodium hydroxide solution, the mass volume ratio of Urami sativa coarse charcoal to sodium hydroxide solution is 1g: 30mL, soak for 30min at 70°C, and then Filter dried at N 2 In air, keep warm at 600°C for 1.5h;

[0046] (3) Post-treatment: Soak the Ulagrass charcoal prepared in step (2) in hy...

Embodiment 2

[0052] A preparation method of Spodoptera litura sex pheromone sustained-release agent, carried out as follows:

[0053] Step (1) Preparation of slow-release carrier

[0054] (1) High-temperature carbonization: Wash Uralia sativa, cut into sections, soak in ferric chloride solution with a concentration of 0.01%wt, stir at 350rpm for 60min, the mass ratio of Urami sativa to ferric chloride solution is 1:50, and dry After drying, crush and pass through a 10-mesh sieve, in H 2 and N 2 In a mixed atmosphere with an air flow ratio of 1:9, with a total air flow of 100mL / min, heat at 600°C for 1.5h to obtain Ulagrass coarse carbon;

[0055] (2) Activation: add Ulagrass coarse charcoal to 6%wt sodium hydroxide solution, the mass volume ratio of Ulacao charcoal to sodium hydroxide solution is 1g: 60mL, soak at 80°C for 15min, then filter and dry dry, in N 2 In the atmosphere, keep warm at 1000°C for 1h;

[0056] (3) Post-treatment: Soak the Ulagrass charcoal prepared in step (2) i...

Embodiment 3

[0063] A preparation method of corn borer pheromone sustained-release agent, carried out as follows:

[0064] Step (1) Preparation of slow-release carrier

[0065] (1) High-temperature carbonization: Wash Uralia sativa, cut into sections, soak in ferric chloride solution with a concentration of 0.02%wt, stir at 400rpm for 50min, the mass ratio of Urami sativa to ferric chloride solution is 1:80, and dry After drying, crush and pass through a 100-mesh sieve, in H 2 and N 2 In a mixed atmosphere with an air flow ratio of 1:9, with a total air flow of 110mL / min, heat preservation at 500°C for 2 hours to obtain Ulacao coarse charcoal;

[0066] (2) Activation: add Ulagrass coarse charcoal to 5%wt sodium hydroxide solution, the mass volume ratio of Ulacao charcoal to sodium hydroxide solution is 1g:50mL, soak at 75°C for 20min, then filter and dry dry, in N 2 In air, keep warm at 900°C for 1.2h;

[0067] (3) Post-treatment: Soak the Ulagrass charcoal prepared in step (2) in hyd...

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Abstract

The invention relates to an insect pheromone slow-release agent, which is prepared by loading insect pheromone by using carex meyeriana porous carbon as a slow-release carrier, adding a tabletting auxiliary material, and performing mixing and tabletting, wherein the tabletting auxiliary material contains starch and talcum powder; the carex meyeriana porous carbon slow-release carrier is prepared by soaking carex meyeriana in ferric chloride, performing high-temperature carbonization and alkali soaking, performing high-temperature activation and performing hydrogen peroxide water bath treatment. The prepared carex meyeriana porous carbon has an excellent specific surface area and a two-stage pore channel structure, the specific surface area reaches 2700 m < 2 > / g, insect pheromones are effectively adsorbed, irradiation of natural light and the like to the pheromones is avoided, the surface of the activated carbon is rich in reductive hydroxyl, the functional groups totally reflect reducibility, and the pheromones in pore channels are effectively protected against oxidative degradation; and long-acting slow release is formed after tabletting, and after slow release is conducted for 180 days, the remaining insect pheromones on the slow-release carrier account for about 20% of the initial value.

Description

technical field [0001] The invention relates to the technical field of insect pheromone slow release, in particular to an insect pheromone slow release carrier and a preparation method thereof. Background technique [0002] Insect pheromones, also known as insect pheromones, are chemical substances secreted by individual insects through glands to regulate or induce the behavior and response of other individuals of the same species. Insect pheromones can be used for insect detection, trapping and disorientation. Among them, trapping is to use pheromone to attract insects to the trap device, so as to achieve the purpose of catching insects. Misdirection is to release insect pheromones in the surrounding environment of crops so that insects cannot perceive the opposite sex, so as to interfere with the mating and reproduction of insects, thereby reducing pests. The pheromones of different insects have different chemical structures, most of which are organic oxygen compounds or...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01N61/00A01N25/18A01N25/34A01P7/04C01B32/318C01B32/348
CPCA01N25/08A01N61/00A01N25/18A01N25/34C01B32/318C01B32/348A01P7/04A01P19/00Y02A50/30
Inventor 梁大栋刘俊渤唐珊珊齐佳旭王明辉
Owner JILIN AGRICULTURAL UNIV
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