Encapsulation of Peppermint Oil with Carboxymethyl kappa Carrageenan-Gelatine-Chitosan

Abstract

Peppermint oil is an essential oil that can provide fresh sensation but their fresh sensation will disappear in a short time. This research was designed to overcome that problem through encapsulating menthol oil in a term sensitive release microcapsule with carboxymethyl kappa carrageenan (CMKC) -gelatine-chitosan and crosslinking agent, lutensol, as microcapsule wall. Encapsulation of peppermint oil in a microcapsule is a chemical modification method for controlling the release of the component of peppermint oil to the environment. Microencapsulation of peppermint oil has been done by conservation method. Morphology of peppermint oil microcapsule was analyzed by Scanning Electron Microscope (SEM) image. The effect of temperature on the changes of microcapsule morphology was analyzed by optical microscope image. The effect of microcapsule heating temperature on the release of menthol oil component was analyzed by Gas Chromatography (GC) spectrum profile. Based on the observation of microcapsule morphology, without heating, the form of the microcapsule was round; after heated, the microcapsule became broken. There was a difference in the peppermint oil components releasing the power of microcapsule with different heating temperature; the quantity of each component of peppermint oil released when the microcapsule had been heating on 39 °C was higher than on 36 °C.