Chemical variability in essential oils isolated from roots, stems, leaves and flowers of three Ruta species growing in Morocco

In this study, the essential oils (EOs) of separated organs (roots, leaves, stems and flowers) of Ruta chalapensis L., Ruta gravealens L., and Ruta montana L. are characterized by GC/MS analysis and the intra-species variations of the chemical composition of essential oils from three Morocco species were investigated using statistical analysis (principal component analysis (PCA) and cluster analysis (CA)). Correlations between the EO chemical compositions, organs and species were discussed. The results obtained show that a mixture of ketones generally characterizes the EOs of the different organs of three species studied, which 2-undecanone reach 74,36%. Nevertheless, it was observed specific significant disparities between species but also within the same species, especially for presence of chalepensin, geijerene and elemol