Acides gras et insaponifiables d’extraits obtenus à partir des sommités fleuries et des rhizomes de Vetiveria nigritana (Benth.) Stapf, Poaceae

¹ Laboratoire de pharmacognosie et phytothérapie, Faculté de Pharmacie, 28 Pl. H. Dunant, Clermont-Ferrand, F-63100 + 33-473-282849
² Laboratoire de chimie des huiles essentielles, Université Blaise Pascal, Campus des Cézeaux, Aubière, F-63177

^* J-Louis.Lamaison@u-clermont1.fr

Reçu : 24 Avril 2006
Accepté : 14 Juin 2006

Abstract

Extracts of Vetiveria nigritana flowering tops and rhizomes were analyzed by mean of GC/MS for their fatty acids and unsaponifiable components. In flowering tops extract, the acid fraction is characterized by the presence of palmitic acid and other long chain fatty acids (until C34). Unsaponifiable contains a high percentage of sterols (43.89%, mainly b-sitosterol). In rhizomes extract, acid fraction is composed by a high amount of typical organic acids of the genus Vetiveria and by a low quantity of fatty acids. Unsaponifiable fraction is characterized by the presence of a great percentage of sesquiterpenic derivatives (54.8%), and of sterols in low amount (13.7%).