The essential oil samples were also analyzed by 1H and 13CNMR
to confirm the identification of some components. A Bruker Avance
DRX-400 NMR spectrometer was used working at 400MHz for 1H
and 100MHz for 13C, using CDCl3 as solvent. The chemical shifts
(ı) assignments were carried out by comparison with those of pure
compound from the literature.