Chemical Composition of Aerial Parts Essential Oils from Six Endemic Malagasy <i>Helichrysum</i> Species

oleh: Delphin J. R. Rabehaja, Guillaume Bezert, Stéphan R. Rakotonandrasana, Panja A. R. Ramanoelina, Charles Andrianjara, Ange Bighelli, Félix Tomi, Mathieu Paoli

Format: Article
Diterbitkan: MDPI AG 2020-02-01

Deskripsi

The essential oils of six endemic Malagasy <i>Helichrysum</i> species were investigated by GC (RI), GC&#8722;MS and <sup>13</sup>C NMR spectrometry. In total, 153 compounds were identified accounting for 90.8% to 99.9% of the total composition. The main constituents were &#945;-pinene for <i>H. benthamii,</i> 1,8-cineole for <i>H. dubardii</i>, (E)-&#946;-caryophyllene for <i>H. indutum,</i> and <i>H. bojerianum</i>. <i>H. diotoides</i> essential oil was characterized by the presence of two lilac alcohols and four lilac acetates whereas <i>H. hirtum</i> essential oil exhibited an atypical composition with 7&#946;-<i>H</i>-silphiperfol-5-ene, 7-epi-subergorgiol, and 7-epi-silphiperfol-5-en-13-oic acid as major components.