| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 230863 | The Journal of Supercritical Fluids | 2013 | 6 Pages |
Different extraction processes of dittany (Origanum dictamnus) for the recovery of extracts enriched with bioactive components were examined in this work. More specifically, hydrodistillation, extraction with a liquid organic solvent, supercritical CO2 extraction, as well as a combination of supercritical and liquid extraction were applied in order to recover improved extracts with respect to their antioxidant activity. The latter was determined by using a free radical method (DPPH). The antioxidant activities of the extracts obtained were compared with those of carvacrol, a main component of dittany, and BHT, a common synthetic antioxidant. It is shown that the combination of the conventional liquid extraction with supercritical extraction could be a promising alternative process for the recovery of extracts enriched with bioactive compounds.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Dittany extracts were obtained using hydrodistillation, liquid extraction and supercritical CO2 extraction. ► SCCO2 was used as a purification method of ethyl acetate dittany extract. ► Increase of pressure and co-solvent amount in SFE result in higher yields but less active extracts. ► The highest antiradical activity was exhibited by the purified with SCCO2 product.
