| chemical composition and antioxidant, antimicrobial, and antifungal activities of the essential oil of achillea ligustica all. | the chemical composition of the essential oil from flowering tops of achillea ligustica all. was studied. samples were collected in different localities of sardinia (italy) and hydrodistilled both with clevenger-type and with simultaneous distillation-extraction apparatus. the yields ranged between 0.88 +/- 0.06 and 0.43 +/- 0.02% (vol/dry wt). the essential oils were analyzed by gc-ms, and a total of 96 components were detected. from a qualitative point of view, irrelevant differences between s ... | 2005 | 16366708 |
| chemical composition, seasonal variability, and antifungal activity of lavandula stoechas l. ssp. stoechas essential oils from stem/leaves and flowers. | essential oils from the stems/leaves (l) and flowers (f) of lavandula stoechas l. ssp. stoechas growing wild in southern sardinia (italy) were extracted by hydrodistillation and analyzed by gas chromatography coupled with flame ionization detector and ion trap mass spectrometry. the major compound was fenchone, accounting for, on average, 52.60% in l and 66.20% in f, followed by camphor (13.13% versus 27.08%, in l and f, respectively). f essential oil yields (volume per dry weight) decreased fro ... | 2006 | 16756368 |
| chemical composition and biological assays of essential oils of calamintha nepeta (l.) savi subsp. nepeta (lamiaceae). | aerial parts of wild calamintha nepeta (l.) savi subsp. nepeta growing spontaneously on the mediterranean coast (sardinia island, italy) and on the atlantic coast (portugal) were used as a matrix for the supercritical extraction of volatile oil with co(2). the collected extracts were analysed by gc-fid and gc-ms methods and their compositions were compared with that of the essential oil isolated by hydrodistillation, but the differences were not relevant. a strong chemical variability was observ ... | 2010 | 20981614 |
| Antifungal activity and chemical composition of essential oils from Smyrnium olusatrum L. (Apiaceae) from Italy and Portugal. | The essential oils and supercritical CO(2) extracts of wild Smyrnium olusatrum L. growing in Sardinia (Italy) and in Portugal were investigated. For the study, oils were isolated from total plant aerial part (umbels containing seeds). The content of ß-phellandrene (67.3% vs. 42.7%) and a-pinene (31.9% vs. 1.2%), respectively, the main components of Portuguese and Italian essential oils, declined during the maturation stage of the umbels. Contrarily, some other important components, particularly ... | 2011 | 21902563 |