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Abscisic acid nano-emulsion and preparation method thereof

A nano-emulsion, abscisic acid technology, applied in the fields of botanical equipment and methods, chemicals for biological control, animal repellants, etc., can solve the problem of low utilization rate of abscisic acid, large amount of abscisic acid, soil pollution, etc. problem, to achieve the effect of reducing the absolute dose, simple operation, and prolonging the action time

Inactive Publication Date: 2013-02-13
GUIZHOU TOBACCO SCI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem solved by the present invention is that the actual amount of abscisic acid in the prior art is relatively large, the utilization rate of abscisic acid is not high, and its excessive loss in the environment , causing soil pollution, the present invention provides a nanoemulsion of abscisic acid and a preparation method thereof, which can reduce the concentration of abscisic acid used in the field, reduce the loss of abscisic acid in the environment, and effectively prolong the action time of the drug, which can be more Good for improving crop resistance

Method used

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  • Abscisic acid nano-emulsion and preparation method thereof

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preparation example Construction

[0024] The preparation method of the nanoemulsion embedding the abscisic acid of the present invention uses the abscisic acid oil phase and the polyvinyl alcohol water phase with a volume ratio of 1:1 to 1:8 as raw materials. First, abscisic acid is dissolved in dichloromethane (DCM) or dimethyl sulfoxide (DMSO), and emulsifiers such as anionic, cationic, amphoteric, and nonionic surfactants are added agent, etc.) to prepare an abscisic acid oil phase solution with a mass fraction of abscisic acid of 30-75% and an emulsifier mass fraction of 0.1-3%, which is the abscisic acid oil phase. At the same time, dissolve polyvinyl alcohol into water to make a polyvinyl alcohol solution with a mass fraction of 0.5-3.0%, which is the polyvinyl alcohol aqueous phase. Then, the oil phase of abscisic acid was added into the aqueous phase of polyvinyl alcohol, and the nanoemulsion of abscisic acid was prepared by ultrasonic treatment. Finally, a stabilizer xanthan gum was added to the nano...

Embodiment 1

[0037] The specific volume ratio of the abscisic acid nanoemulsion to be prepared is: abscisic acid oil phase / polyvinyl alcohol water phase=1 / 1, and the preparation process is as follows:

[0038] ① Preparation of abscisic acid oil phase: Dissolve 300 g of abscisic acid in dichloromethane, and dissolve to 1000 mL to make an abscisic acid solution with a mass fraction of 30%, then add Tween 80 to make the mass fraction 2%, add Polyvinylpyrrolidone (PVP) makes its mass fraction 3%, which is the oily phase of abscisic acid.

[0039] ② Preparation of polyvinyl alcohol aqueous phase: Weigh 5 grams of polyvinyl alcohol, disperse it in 800mL of distilled water, heat it to 80°C to dissolve it, and then set the volume to 1000mL to make a solution with a mass fraction of 0.5%, which is polyethylene Alcoholic water phase.

[0040] ③ The abscisic acid oil phase solution and the polyvinyl alcohol water phase are mixed in a volume ratio of 1 / 1, and the nanoemulsion can be prepared by ultra...

Embodiment 2

[0042] Example 2 : the abscisic acid nanoemulsion to be prepared, the specific volume ratio is: abscisic acid oil phase / polyvinyl alcohol water phase=1 / 2, and the preparation process is as follows:

[0043] ① Preparation of abscisic acid oil phase: Dissolve 500 grams of abscisic acid in dichloromethane, and dissolve it to 1000 mL to make a 50% abscisic acid solution, then add Tween 80 to make the mass fraction 2%, this is abscisic acid oily phase.

[0044] ②Preparation of polyvinyl alcohol aqueous phase: Weigh 15 grams of polyvinyl alcohol, disperse it in 800 mL of distilled water, heat it to 90 ° C to dissolve it, and then set the volume to 1000 mL to make a solution with a mass fraction of 1.5%, which is polyethylene Alcoholic water phase.

[0045] ③ Mix the abscisic acid oil phase solution with the polyvinyl alcohol water phase at a volume ratio of 1 / 2, and perform ultrasonic treatment to make a nanoemulsion. Ultrasonic treatment method: power 25%, ultrasonic treatment ...

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Abstract

The invention discloses an abscisic acid nano-emulsion and a preparation method of the abscisic acid nano-emulsion. The abscisic acid nano-emulsion has the formulation: 25-70% of abscisic acid oil phase with the volume ratio of 1: 1-1: 9, 0.6-2.4% of polyvinyl alcohol water phase and 0.1-1% of stabilizer, wherein the abscisic acid oil phase contains 0.1-2% of emulsifying agent. The abscisic acid nano-emulsion is simple in preparation operation and capable of building an oil-in-water nano emulsion system by an ultrasonic treatment method; the obtained abscisic acid oil drops are small in particle size, even in particles and high in encapsulation rate; and the abscisic acid nano-emulsion effectively improves the stability of abscisic acid, an has slow release function, thus having higher application value.

Description

technical field [0001] The invention belongs to the field of pesticide formulations, and in particular relates to an abscisic acid nanoemulsion and a preparation method thereof. Background technique [0002] Abscisic acid (Abscisic Acid, abbreviated as ABA) is one of the five natural growth regulators of plants. Abscisic acid can stimulate ethylene production, promote fruit ripening, and inhibit DNA and protein synthesis. [0003] Natural abscisic acid (ABA), also known as S-inducer, is a plant natural growth regulator substance with a sesquiterpene carboxylic acid structure, and is the "anti-stress immune factor" of plants. A large number of researches at home and abroad have proved that S-antigen can activate the stress resistance gene of the plant itself, induce and activate the stress resistance immune system in the plant body, and improve the plant's own resistance to drought, cold, pests, and salinity. The "anti-stress immune factor". As a new type of biological pes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/42A01N25/04A01P21/00
Inventor 陈兴江郑少清耿召良蔡刘体陆宁曹毅商胜华
Owner GUIZHOU TOBACCO SCI RES INST
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