Composition of the essential oils from the leaves ofMicroglossa pyrifolia (Lam.) O. Kuntze andHelichrysum odoratissimum (L.) Less. growing in Cameroon

Four essential oil samples obtained by hydrodistillation from the leaves of Microglossa pyrifolia (Lam.) O. Kuntze and Helichrysum odoratissimum (L.) Less., respectively, were analysed by GC and GC–MS. The main constituents of the leaf oil of M. pyrifolia were found to be (E)-β-farnesene (78% and 73%) and β-caryophyllene (11% and 14%), whereas those of H. odoratissimum were α-Pinene (47% and 41%), β-caryophyllene (14% and 5%) and α-curcumene (4% and 20%).