Essential oil microcapsule and preparation method thereof

Abstract

The invention discloses an essential oil microcapsule and a preparation method thereof. The essential oil microcapsule comprises, by weight, 12.5-100 parts of cymbopogon citratus essential oil, 50-100 parts of a wall material, and 3.125-35 parts of an emulsifying agent. Compared to the existing product, the product of the present invention is nature and safe, and has good affinity, and the production process is completely isolated from oxygen, such that the addition of the antioxidant is not required in the formula. Compared to the existing method, the method of the present invention has the following characteristics that the operation temperature is low so as to effectively reduce the loss of the flavor substances; after the elution, the residual oil on the product surface is less and the stability is strong; the yield of the essential oil microcapsule product is improved, especially the effective loading amount can be obviously improved, the oil content can achieve more than 10%, and the yield is more than 60%; the product structure is complete, the particle size is small, the distribution is uniform, and the surface pore area is small, such that the volatilization of the core material and the entering of outside oxygen at the storage stage can be effectively slowed down, the shelf life can be prolonged, and the market value can be increased; and the continuous production can be achieved, and the preparation method is more suitable for industrial demand.

Description

technical field [0001] The invention relates to a microcapsule, in particular to an essential oil microcapsule and a preparation method thereof, in particular to a lemongrass essential oil microcapsule and a preparation method thereof. Background technique [0002] Lemongrass essential oil is an essential oil extracted from the natural aromatic plant lemongrass. It has multiple functions such as repelling mosquitoes, sterilizing and anti-inflammatory, anti-depression, and boosting the spirit. With the increasing demand for natural, green and safe products, the use of lemongrass essential oil is becoming more and more extensive, such as aromatherapy aromatherapy, mosquito repellent daily chemicals, textile spices and so on. [0003] Microcapsule technology uses natural or synthetic polymer materials to wrap reactive, sensitive or volatile solid or liquid components in small capsules with diameters of nanometers and micrometers, thereby protecting the core material. At presen...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the existing microcapsule products are for the encapsulation of monomeric compounds. Although there are microencapsulations for volatile multi-component compounds such as essential oils, there are very few types, and some of them use synthetic polymers. The materials are not natural and safe enough, or antioxidants with poor compatibility are added; the temperature in some production processes is too high, or oxygen cannot be isolated, resulting in the loss of core materials; some related microencapsulation process indicators, especially low oil content, microencapsulation The structure of the capsule is incomplete, the surface smoothness is not enough, and the particle size distribution is extremely uneven; industrial needs

Obviously, these defects have greatly affected the application of essential oil microcapsules to a certain extent.

Images