Microencapsulation of Essential Oils by Interfacial Polimerization Using Polyurea as a Wall Material

Ferrándiz Marcela¹, Capablanca Lucía², Bou Eva², García David², Bonet Ma Ángeles², Bartolome Luis³

¹Biotechnology Research Group, Textile Research Institute (AITEX), Alcoy, Spain.
²Campus de Alcoy, Universitat Politècnica de València (UPV), Alcoy, Spain.
³Faculty of Science and Technology, Central Analysis Service (SGIker), University of the Basque Country (UPV/EHU), Bilbao, Spain.

DOI: 10.4236/jeas.2015.54014                

Abstract

An essential oil is the volatile lipophilic component extracted from plants. Microencapsulation systems protect the essential oil from degradation and evaporation, and, at the same time, allow a sustained release. This work analyses and characterizes the oregano and sage essential oil microcapsules prepared by interfacial polymerization technique, using polyurea as wall material. Several instrumental techniques are used: optical microscopy, size particle, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), Termo gravimetric analysis (TGA), spectrophotometry, antimicrobial test and chromatography. Results show that oregano and sage oil have antimicrobial properties, and their microencapsulation allows knowing that these properties remain inside the microcapsules.

Keywords

Oregano Oil, Sage Oil, Interfacial Polymerization, Polyurea

Conflicts of Interest

The authors declare no conflicts of interest.

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