Chemical Composition of Aerial Parts Essential Oils from Six Endemic Malagasy Helichrysum Species

Delphin Rabehaja (1) , Guillaume Bezert (1) , Stéphan R Rakotonandrasana , Panja Ramanoelina (2) , Charles Andrianjara , Ange Bighelli (1) , Félix Tomi (1) , Mathieu Paoli (1)

1 SPE - Sciences pour l'environnement
2 Ecole Supérieur de Sciences Agronomiques

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

Mots clés: Madagascar; essential oil; endemic Helichrysum

Domaines: Chimie analytique

Delphin Rabehaja, Guillaume Bezert, Stéphan R Rakotonandrasana, Panja Ramanoelina, Charles Andrianjara, et al.. Chemical Composition of Aerial Parts Essential Oils from Six Endemic Malagasy Helichrysum Species. Plants, 2020, 9 (2), pp.265. ⟨10.3390/plants9020265⟩. ⟨hal-02521900⟩