Chemical characterisation of essential oils of leaves of two Solanaceae: Solanum rugosum and Solanum erianthum from Côte d'Ivoire.

This study made it possible to characterise by GC (in combination with retention indices), GC-MS and 13C NMR, the chemical composition of the essential oils from Solanum rugosum and Solanum erianthum, two Solanaceae of the Ivorian flora. The two essential oils were characterised by a very high proportion of sesquiterpenes. Specifically, the essential oil of S. rugosum was dominated by (E)-ß-caryophyllene (33.7%), ß-elemol (19.8%) and germacrene D (14.4%), while that of S. erianthum was mainly composed of α-humulene (38.6%), ß-elemol (17.8%) and (E)-ß-caryophyllene (16.7%). The chemical composition of Solanum rugosum is described here for the first time.