Abscisic acid-embedded chitosan nanoparticles and preparation method thereof

Abstract

The invention discloses abscisic acid-embedded chitosan nanoparticles and a preparation method thereof. The abscisic acid-embedded chitosan nanoparticles are nanoparticles formed by wrapping aqueous solution of abscisic acid by an embedding material which is formed by dilute solution of acetic acid of chitosan and a crosslinking agent. The preparation method comprises the following steps of: adding the chitosan into the dilute solution of acetic acid to be dissolved, and then adding solution of sodium hydroxide to adjust the pH value to obtain dilute solution of acetic acid of the chitosan; preparing abscisic acid into aqueous solution; preparing the crosslinking agent into aqueous solution; adding the solution of dilute acetic acid of the chitosan into the aqueous solution of abscisic acid, and then adding the aqueous solution of crosslinking agent drop by drop; and fully mixing uniformly to obtain the abscisic acid-embedded chitosan nanoparticles. The method is simple and easy, and has high embedding rate; the obtained embedding nanoparticles have no adhesion, good glomeration and round surface; after the embedding, the abscisic acid can be protected from external interference, and the stability of the abscisic acid can be improved; the abscisic acid is steadily and slowly released, which prolongs action time and strengthens induced resistance effect; and the chitosan serving as a wall material has disease-resistant and induced resistance effects.

Description

Chitosan nanoparticles embedded with abscisic acid and preparation method thereof technical field The present invention relates to oxygen-containing organic matter, furthermore, relates to abscisic acid, and also relates to embedding technology, especially to particles embedding abscisic acid. Background technique As we all know, abscisic acid (ABA), also known as S-inducer, is a plant natural growth regulator substance with a sesquiterpene carboxylic acid structure, and is an "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 pesticide, abscisic acid can reduce the application of chemical pesticides, improve the yield and quality of agricu...

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