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Analysis of the essential oil from the roots of Eupatorium cannabinum subsp. c orsicum (L.) by GC, GC‐MS and 13 C‐NMR
Author(s) -
Paolini Julien,
Costa Jean,
Bernardini AntoineFrançois
Publication year - 2007
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.977
Subject(s) - chemistry , nerol , essential oil , sesquiterpene , hydrocarbon , organic chemistry , chromatography , geraniol
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 13 C‐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%), δ ‐2‐carene (14.5%) and β ‐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. Copyright © 2007 John Wiley & Sons, Ltd.