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Supercritical carbon dioxide extraction and fractionation of oregano oleoresin |
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| Authors: | Béla Simándi Marianna Oszagyán Éva Lemberkovics Ágnes Kéry Jean Kaszács Fernand Thyrion Tünde Mátyás |
| Affiliation: | a Technical University of Budapest, H-1521 Budapest, Müegyetem rkp. 3., Hungary b CAOLA Company for Cosmetics and Household Chemicals, H-1116 Budapest, Vegyész u. 17–25, Hungary c Semmelweis University of Medicine, H-1085 Budapest, Üllõi út 26, Hungary d Universite Catolique de Louvain, Faculte des sciences appliquees unite des procedes, B-1348 Louvain-La-Neuve, Voie Minckelers 1, Belgium |
| Abstract: | The leaves of Origanum vulgare L. (Lamiaceae) harvested in different countries, three samples from Hungary and one from Turkey, were extracted with carbon dioxide in a high pressure apparatus with a 5 l extractor vessel volume. Total extractions with stagewise precipitation of the extracts were carried out in order to obtain essential oil-rich liquid and pasty products. A fractionated extraction with a stepwise increase of the extraction pressure was also performed to obtain portions of extracts of different quality. The extraction with carbon dioxide was compared to conventional steam distillation and to Soxhlet extraction with hexane, whith the goal of recovering essential oils and oleoresin products, respectively. |
| Keywords: | essential oil oleoresin Origanum vulgare L supercritical fluid extraction |
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