Compositional analysis of the leaf, stem and rhizome oils of Piper lolot C. DC. from Vietnam

The essential oils isolated by hydrodistillation from the fresh leaves, stems and rhizomes of Piper lolot C. DC. have been analyzed for the first time by a combination of GC and GC/MS. The oils contained more than 35 compounds, of which 25 constituents could be identified according to their chromatographic retention indices and mass spectra. The main constituent of the oils was beta-caryophyllene (26.1-30.9%). The rhizome oil contained bornyl acetate (10.0%) as second major component.