| Titre : | Antioxidant capacity of the essential oils from lavandula luisieri, L. stoechas subsp. lusitanica, L. stoechas subsp. lusitanica x L. luisieri and L. viridis grown in algarve (Portugal) |
| Auteurs : | Fabiola Matos, Auteur ; Maria G. Miguel, Auteur ; Joao Duarte, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | The journal of essential oil research (Vol. 21 N° 4, Juillet/Août 2009) |
| Article en page(s) : | pp. 327-336 |
| Note générale : | Génie Chimique |
| Langues : | Anglais |
| Index. décimale : | 646 |
| Tags : | Lavandula luisieri stoechas L. subsp. lusitanica viridis x Lamiaceae Essential oil composition 1,8-cineole Fenchone Camphor Trans-α ; -necrodyl acetate Antioxidant activity |
| Résumé : |
The antioxidant capacity of the essential oils isolated from the aerial parts of Lavandula luisieri, L. stoechas subsp. lusitanica, the hybrid L. stoechas subsp. lusitanica x L. luisieri, and L. viridis collected in different regions of Algarve (Portugal), as well as that of butylated hydroxytoluene (BHT), was evaluated using three different methods: free radical scavenging activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) method, thiobarbituric acid reactive substances assay (TBARS) and reductive potential.
The chemical composition of the essential oils was analyzed by GC and GC/MS. The oils of L. luisieri were mainly constituted by 1,8-cineole (26-34%) and trans-α-necrodyl acetate (11–18%), only present in this lavender species. The oils of Lavandula stoechas subsp. lusitanica and the hybrid L. stoechas subsp. lusitanica x L. luisieri were dominated by fenchone (42–44%) and camphor (35–36%). Despite of the morphological resemblances of the L. stoechas subsp. lusitanica x L. luisieri with L. luisieri, no necrodane derivatives were detected in the hybrid, showing instead a major chemical similarity with L. stoechas oil. Lavandula viridis oil mainly comprised 1,8-cineole (33%) and camphor (20%). The oils of L. luisieri were the most effective as antioxidants, independent of the evaluation method used, although showing always lower antioxidant ability than BHT. |
| DEWEY : | 665 |
| ISSN : | 1041-2905 |
| En ligne : | http://www.jeoronline.com/archive/detail/42#top |
