Analysis of the essential oil from the roots of Eupatorium cannabinum subsp. corsicum (L.) by GC, GC-MS and 13C-NMR.
Eupatorium cannabinum subsp. corsicum (L.) is an endemic subspecies from the island of Corsica. The essential oil from the roots of this aromatic plant has been studied by GC, GC-MS and by 13C-NMR. In contrast to the essential oil from the aerial parts, which is dominated by hydrocarbon compounds (76.9%) and particularly by sesquiterpene components (43.3%), the essential oil from the roots was characterized by a high content of oxygenated compounds (61.0%), particularly oxygenated monoterpenes (54.0%). In the root oil, 106 components were identified representing 96.1% of the total amount. This oil was dominated by the monoterpenes esters (33%), the major components of which were neryl isobutyrate (17.6%), thymyl methyl oxide (15.1%), delta-2-carene (14.5%) and beta-pinene (5.7%). Aromatic esters, nerol derivatives (esters and diesters) and a benzofuran were investigated by GC-MS using different ionization modes including electron impact ionization, and positive- and negative-chemical ionization. These components have not previously been reported in the essential oil of aerial parts of E. cannabinum from Corsica island.
Paolini
Julien
J
Université de Corse, Equipe Chimie des Produits Naturels, UMR-CNRS 6134, Quartier Grossetti, BP 52, 20250 Corte, France. paolini@univ-corse.fr
Costa
Jean
J
Bernardini
Antoine-François
AF
D002849:Chromatography, Gas; D036602:Eupatorium / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry*; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*
D009822:Oils, Volatile; D010938:Plant Oils