| Titre : | Seasonal variations of teucrium flavum L. essential oil (2010) |
| Auteurs : | V. Carl Hamacher, Auteur ; Zvonko G. Vranesic, Auteur ; Safwat G. Zaky, Auteur |
| Type de document : | Article : texte imprimé |
| Article en page(s) : | pp. 211 - 216 |
| Note générale : | Génie Chimique |
| Langues : | Français |
| Index. décimale : | |
| Tags : | Teucrium flavum Lamiaceae Essential oil composition Germacrene D b-bisabolene |
| Résumé : |
Essential oils from the aerial parts of Sicilian Teucrium flavum L., isolated by using microwave-assisted hydrodistillation (MHD), were analyzed for the first time at various seasonal stages (vegetative and budding stage) by means of GC/MS and GC-FID; the flowers and fruits were also subjected to examination.
More than 80 compounds were identified as oil components. The leaf, flower and fruit oils were characterized by a predominance of sesquiterpenes, such as b-caryophyllene (3–5 g/100 g), germacrene D (4–14 g/100 g), b-bisabolene (32–49 g/100 g); the total amount of sesquiterpene hydrocarbons contained in each oil was 56–70 g/100 g, the oxygenated derivatives were in the range of 9–20 g/100 g. The monoterpene hydrocarbons in all samples (leaves, flowers, fruits) were contained in very low amounts, from 0.2 to 1.6 g/100 g, and were the least representative fraction of the oils. Oxygenated aliphatic compounds, especially esters, were also detected. The results can be useful to support, by means of a safe reliable sample preparation (MHD) and analytical (GC) technique, the research on medicinal plants belonging to Mediterranean flora. |
| En ligne : | http://www.jeoronline.com/archive/detail/51 |
