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Dendrolimus punctatus (walker) sex pheromone microcapsule and preparation method thereof

A pine caterpillar and pheromone technology, applied in botany equipment and methods, chemicals for biological control, animal repellent, etc., can solve the problem of not being able to maintain the release rate of sex pheromone for a long time, limiting the promotion of release carriers and Application, sex pheromone components are susceptible to photodegradation, etc., to achieve the effect of improving insect trapping efficiency, easy wall material, and stable release rate

Inactive Publication Date: 2016-03-30
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, there are various release carriers of sex pheromones, such as cuff-type rubber stopper carriers, whose loaded sex pheromone components are easily isomerized or oxidized under the influence of light and temperature conditions, which affect the release rate of sex pheromones. Thereby reducing the biological activity of the sex pheromone, sometimes even a small amount of isomers can inhibit the biological activity of the sex pheromone, reducing the activity of attracting moths in the field
The polyethylene tube release carrier cannot maintain a stable release rate of sex pheromone for a long time, and the loaded sex pheromone components are susceptible to photodegradation, resulting in trapping that can only be effective in a short time; and this type of carrier is not biodegradable, resulting in polymer materials accumulate in the environment beyond processing
These factors limit the promotion and application of release vectors

Method used

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  • Dendrolimus punctatus (walker) sex pheromone microcapsule and preparation method thereof
  • Dendrolimus punctatus (walker) sex pheromone microcapsule and preparation method thereof
  • Dendrolimus punctatus (walker) sex pheromone microcapsule and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] The method for preparing Dendrolimus punctatus sex pheromone microcapsules of the present invention includes the following specific steps:

[0047] (1) Preparation of prepolymerization solution: Put a certain amount (1-5 grams) of gum arabic powder and a certain amount (1-5 grams) of gelatin into two 200 mL beakers, and add 100 mL of distilled water to each, (20 ± 1) Let stand at ℃ for 30min. Put the beaker into a water bath at (50±1)°C and heat it slowly until the gelatin and gum arabic are completely dissolved, then pour it into a 500 mL three-necked flask.

[0048] Preferably, the following three prepolymerization liquids can be used:

[0049] Prepolymerization solution 1: Preparation of prepolymerization solution: Put 1g gum arabic powder and 1g gelatin into two 200mL beakers, add 100mL distilled water to each, and let stand at (20±1)℃ for 30min. Put the beaker into a water bath at (50±1)°C and heat it slowly until the gelatin and gum arabic are completely dissolved to o...

Embodiment 1

[0064] The synthesis method of Dendrolimus punctatus sex pheromone microcapsules is as follows:

[0065] (1) Preparation of prepolymerization solution: Put 1g gum arabic powder and 1g gelatin into two 200mL beakers respectively, add 100mL distilled water to each, and let stand at (20±1)℃ for 30min. Put the beaker into a water bath at (50±1)°C and heat it slowly until the gelatin and gum arabic are completely dissolved, then pour it into a 500 mL three-necked flask.

[0066] (2) Emulsification stage: Add 4mL Dendrolimus punctatus sex pheromone liquid paraffin solution (Z5, E7-12: OH: Z5, E7-12: OAc: Z5, E7-12: OPr = 50) into the above three-necked flask in sequence: 40:15), 20 mL of polyvinyl alcohol aqueous solution (1w%). Place the three-necked flask on an electromagnetic stirrer and stir (600r / min) for 20 minutes.

[0067] The core materials are cis-5, trans 7-dodecadienol, cis-5, trans 7-dodecadiene acetate and cis-5, trans 7-dodecadiene propionate and liquid paraffin, horsetail...

Embodiment 2

[0079] The synthesis method of Dendrolimus punctatus sex pheromone microcapsules is as follows:

[0080] (1) Preparation of prepolymerization solution: Put 2.5g of gum arabic powder and 2.5g of gelatin into two 200mL beakers respectively, add 100mL of distilled water to each, and let stand at (20±1)℃ for 30min. Put the beaker into a water bath at (50±1)°C and heat it slowly until the gelatin and gum arabic are completely dissolved, then pour it into a 500 mL three-necked flask.

[0081] (2) Emulsification stage: Add 4mL Dendrolimus punctatus sex pheromone liquid paraffin solution (Z5, E7-12: OH: Z5, E7-12: OAc: Z5, E7-12: OPr = 50) into the above three-necked flask in sequence: 40:15), 20 mL of polyvinyl alcohol aqueous solution (1w%). Place the three-necked flask on an electromagnetic stirrer and stir (600r / min) for 20 minutes.

[0082] The core materials are cis-5, trans 7-dodecadienol, cis-5, trans 7-dodecadiene acetate and cis-5, trans 7-dodecadiene propionate and liquid paraff...

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Abstract

The invention relates to a dendrolimus punctatus (walker) sex pheromone microcapsule and a preparation method thereof, and belongs to the field of dendrolimus punctatus (walker) sex pheromone microcapsule embedding technology. The microcapsule comprises a microcapsule wall material and a microcapsule core material; the microcapsule wall material is mainly composed of gelatin and Arabic gum, and the microcapsule core material includes a dendrolimus punctatus (walker) sex pheromone and liquid paraffin; the dendrolimus punctatus (walker) sex pheromone comprises cis-5,trans-7-codlemone, cis-5,trans-7-dodecadiene acetate and cis-5,trans-7-dodecadiene propionate with the quality ratio of 50:40:15. The biological activity of the dendrolimus punctatus (walker) sex pheromone microcapsule has the advantages of sensitivity, specificity, high efficiency, and long effective period; the microcapsule has the advantages of degradability in the environment, good biological compatibility, no pollution to the environment, low price and the like, can be used for population monitoring, mass trapping and killing prevention and control and isotropic interference prevention and control of dendrolimus punctatus (walker), and has good economic benefits and ecological benefits.

Description

Technical field [0001] The invention relates to a Dendrolimus punctatus sex pheromone microcapsule and a preparation method thereof. The sex pheromone components are embedded in the microcapsules of gelatin and gum arabic powder, so as to extend the release time of the Dendrolimus punctatus sex pheromone and stabilize the release rate. , The purpose of strengthening the mating interference and trapping of Dendrolimus punctatus belongs to the technical field of microcapsule embedding technology of Dendrolimus punctatus sex pheromone. technical background [0002] Among the 6 species of pine caterpillars that are serious in our country, Dendrolimus punctatus (Walker) is the first one. Dendrolimus punctatus is a typical distribution species in the East, and its damage area is mainly in the Yangtze River Basin and the vast area south of it. When a lot of them are rampant, the needles are all eaten up and burned like a fire, so it is called "non-smoke forest fire" and is a devastatin...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N37/06A01P19/00A01N31/02
CPCA01N25/28A01N31/02A01N37/06A01N2300/00
Inventor 孔祥波李学琳刘曼杨茂发张真张苏芳
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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