Hilan, Christo Institut de Recherche Agronomique du Liban (IRAL) - Laboratoire de Fanar, Liban , Sfeir, Rabia Institut de Recherche Agronomique du Liban (IRAL) - Laboratoire de Fanar, Liban , Jawish, Dalal Institut de Recherche Agronomique du Liban (IRAL) - Laboratoire de Fanar, Liban , Aitour, Souad Institut de Recherche Agronomique du Liban (IRAL) - Laboratoire de Fanar, Liban

Huiles essentielles de certains plantes médecinales libanaises de la famille des Lamiaceae

34176

Blooming peaks of certain Lebanese medicinal plants have been identified and collected from various altitude and Lebanese regions. They have been hydro-distilled by the Clavenger method, and the physical and chemical properties of the essential oils have been determined. The yield ofEO varies between 0.7 and 2.2 % v/w ofplant material. The odor is characteristic but the color varies according to seasons. The principal components ratios of EO have been evaluated. They have shown a wide diversity within each species and variety of Lamiaceae family. Three categories were characterized, the menthol plants (Mentha, Micromeria barbata, Micromeria myrthifolia); the thymol plants (Origanum majorana, Origanum syriacum) and the highly volatile terpene plants known to be rich in Eucalyptol, a fJ-pinene (Rosmarinus officinalis, Salvia libanotica). Lebanese plants are considered to have a low toxic effect since smaller percentage ofpulgone, carvacrol and p-thujone as compared to same species from Europe was determined. Their minor components adapt favorably with the major components bringing out a synergetic effect to play important role in the medicinal use or elsewhere.

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medicinal plants , Lamiaceae , essential oil

Lebanese Science Journal

22