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Essential oil composition of croton huberi from Venezuela

Abstract:

The essential oils composition of the fresh and dried leaves of Croton huberi S., were studied. The oils which gave 0.05% and 0.1% (v/w) respectively, were obtained by hydrodistillation and analyzed by GC-MS. Thirty-four components out of thirty-seven detected compounds were identified in the oil obtained from fresh leaves. This oil was characterised by a high content of sesquiterpenes (62.5%), withy-eudesmol (18.7%) as the major constituent, followed by germacrene-D (11.7%), β-eudesmol (7.6%), caryophyllene-oxide (6.9%), kaurene (5.3%), humulene (4.3%), cedrol (4.6%) and isoelemicine (3.0%). In the oil obtained from the dried leaves, twenty-two components were characterised from a total of 29 compounds detected. This oil presented percentages of sesquiterpenes similar to those of the fresh material where γ-eudesmol (20.2%) was the main component, followed by ot-bisabolol (18.1%) and calacorene (9.2%). © 2006 Taylor & Francis Group, LLC.