Preparation method of peppermint oil microcapsules

Abstract

The invention discloses a preparation method of peppermint oil microcapsules. The preparation method comprises steps as follows: ethanol and tween-80 are mixed, and a carrier solution is obtained; peppermint oil is added to the carrier solvent and dissolved, and a core material I is obtained after uniform stirring and mixing; the core material I is added to a hydroxypropyl beta cyclodextrin solution and uniformly stirred, and a core material II is obtained; the core material II is added to a gelatin solution and has a sufficient reaction, and an Arabic gum solution is added; the systematic solution is adjusted to be acidic, formaldehyde is added for cross-linking and curing after rapid cooling, and the pH (potential of hydrogen) value is adjusted until the mixture is alkaline; the mixture is left to stand until complete precipitation and washed to be neutral with water after filtering, and a product is obtained after vacuum drying. The preparation method has the advantages that the embedding rate of the prepared microcapsule can be up to 90% or higher, the method is simple, effective ingredients of a cooling agent don't easily volatilize and the like.

Description

technical field [0001] The invention relates to a method for preparing mint oil microcapsules, which belongs to the field of mint oil application. Background technique [0002] Peppermint oil is one of the most commonly used natural cooling agents. Due to its volatile nature and short cooling effect time, there is an urgent need for a slow-release technology to solve related problems. Microcapsule technology is a technology that uses film-forming materials to coat solid or liquid to form tiny particles. Microcapsules are composed of core materials and wall materials, while cyclodextrin is a relatively common microcapsule wall material. Gelatin and Gum Arabic is also a common microcapsule wall material. [0003] The existing cooling agent microcapsule patents mainly use two kinds of polymer materials with opposite charges as the composite capsule material, and under certain conditions, the cooling agent molecules are wrapped therein, and cross-linked and condensed into capsu...

AI Technical Summary

Problems solved by technology

For example, the patent "A Preparation Method of Menthamide Microcapsules" with application number 201010608333.4 discloses the use of water-soluble protein and gum as wall materials to wrap menthamide molecules. The disadvantage of this method is that the manufacturing process is relatively complicated. More critical control points

Application No. 201010270636.X "a preparation method of menthol microcapsules" patent discloses the method of using chitosan as a wall material and adding modified starch to crosslink to prepare menthol microcapsules. The disadvantage of this method is that , the aqueous solution of microcapsules is difficult to filter and must be processed by spray drying

[0004] Using cyclodextrin alone to wrap mint oil, the wrapping rate is not high, and because it is purely physical wrapping, the mint oil is easily separated from it; using gelatin arabic gum complex coagulation to wrap peppermint oil, the wrapping rate is high, but in The shell of the microcapsules is easy to break in the later processing and use, and the mint oil is exposed