%0 Journal Article
%T Spectroscopic examination and release of microencapsulated oregano essential oil
%A Karakasidou
%A Panagiota
%A Nikolakakis
%A Ioannis
%A Partheniadis
%A Ioannis
%A Vergkizi
%A Souzan
%J -
%D 2017
%R 10.5599/admet.5.4.426
%X Sa£żetak Oregano essential oil (EO) of Greek origin with high carvacrol content (86.84 %) was encapsulated by spray drying using Arabic gum, modified starch and maltodextrin (75:12.5:12.5) as wall materials. The spray-dried product (EOSD) consisted of roundish particles with narrow size distribution. FT-IR and Raman spectroscopy identified the EO in EOSD, with Raman spectra showing more distinct peaks and a small shift of the peak at 1260 cm-1 (assigned to the stretching vibration of the bond of C-O of the phenol), implying only minor chemical interaction with the wall materials. Release of the EO from EOSD was described by the Hixson-Crowell equation (R2=0.986) with apparent diffusion coefficient 8.3x10-10 m2/s. These findings indicate that microencapsulation by spray drying did not affect the quality of the oregano EO and provided relatively fast and complete release
%K oregano essential oil
%K microencapsulation
%K spray drying
%K FT-IR
%K Raman spectroscopy
%K in vitro release
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=282248