The essential oils of six Helichrysum species from Madagascar were investigated and 46 components were identified by GC, GC–MS and 13C‐NMR spectrometry. The main constituents were 1,8‐cineole for H. gymnocephalum (59.7%) and H. bracteiferum (27.3%); β‐pinene for H. selaginifolium (38.2%); (E)‐caryophyllene for H. cordifolium (55.6%), H. faradifani (34.6%) and H. hypnoides (34.0%).
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Cavalli et al. (2001) studied this question.
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