Seasonal variations in essential oil of aerial parts and roots of an Artemisia absinthium L. population from a Spanish area with supramediterranean climate (Teruel, Spain) / Juan A. Llorens-Molina y Sandra Vacas
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Artículo publicado en inglés en la revista Journal of Essential Oil Research. Se investiga la variación estacional de la composición de aceite esencial de partes y raíces de Artemisia absinthium L. Se obtiene a partir de los individuos que crecen silvestres en la provincia de Teruel (España) mediante hidrodestilación o la extracción de destilación simultánea (raíces), y se analizaron por GC / MS y GC / FID.
The seasonal variation of essential oil composition of aerial parts and roots of Artemisia absinthium L. has beeninvestigated. It was obtained from individuals growing wild in Teruel (Spain) by means of hydrodistillation (aerialparts) or simultaneous distillation extraction (roots), and analyzed by GC/MS and GC/FID. Results showed apredominance of oxygenated monoterpenes (81.4–89.1%) in aerial parts; mainly (Z)-epoxyocimene (49.3–71.5%),(Z)-chrysanthemyl acetate (7.6–18%) and linalool (0.7–10.4%). In spite of the high intrapopulational variability,significant variations were observed for these three compounds. Root essential oil composition showed a high amountof hydrocarbon monoterpenes (43.8–55.1%) and monoterpenic esters (36.6–41.5%) with a noticeable seasonal stabilityexcept for some allelopathic oxygenated monoterpenes. As A. absinthium is a typical invasive species, knowingthe seasonal variations of these compounds may be a first step to study their release in soil as a source for naturalherbicides.