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Abstract
We studied the chemical composition of the essential oil of Spanish populations of Thymbra capitata. The production from different parts and their antioxidant capacity were compared both during flowering and during fruiting over three years, from wild and cultivated material. 38 components were identified: highlighting aromatic monoterpenes (carvacrol ≥ 66%; p-cymene, 7.39.2%), monocyclic monoterpenes (y-terpinene, 3.4–11.2%; α-terpinene, 0.3–2.0%), bicyclic monoterpenes (α-thujene, 0.9–2.0%; α-pinene, 0.7–1.4%, camphene, 0.2–0.9%), acyclic monoterpene (myrcene, 1.7–2.4%) and sesquiterpenes as (E)-caryophyllene (1.0–2.0%). A very high lipophilic antioxidant activity was measured with no significant differences between the flowering and fruiting stage.
Résumé
On a étudié la composition chimique de l'huile essentielle de populations espagnoles de Thymbra capitata en comparant la production de différentes parties de la plante et sa capacité antioxydante en fleur et en fruit pendant trois ans sur du matériel sauvage et cultivé. 38 composants ont été identifiés, notamment des monoterpènes aromatiques, monoterpènes monocycliques, monoterpènes bicycliques, monoterpènes acycliques et sesquiterpènes. On a mesuré une activité antilipoperoxydante élevée. On ne trouve pas de différences significatives entre les états de floraison et de fructification.
