Volatile constituents of three Hypericum (Hypericaceae) species using GC-MS analysis

Abstract

Essential oils (EOs) composition from three Hypericum(Hypericaceae) species (H. triquetrifoliumTurra, H.
thymifolium Banks & Sol and H. perforatumL.) grown wild in Syria, was investigated using Gas ChromatographyMass Spectrometry (GC–MS) technique. Data revealed 29, 32 and 52 chemical constituents representing an average
of 100, 100 and 99.97% were identified in EOs of H. triquetrifolium, H. thymifolium and H. perforatum,
respectively. The major constituents presented were n-Hexadecanoic acid (28.58%),Octadecane (10.42%) and
Tricosane (9.66%) for H. triquetrifolium, whereas, Isooctyl phthalate (30.39%), Tetracosane (28.18%) and
Nonacosane (9.12%) were presented in H. thymifolium. As for H. perforatum, they were ß -Selinenol (18.13%),
Elemol (12.77%) and ß-Elemene (10.73%). Moreover, eleven compounds commonly presented in the three studied
EOsHypericum sp. of which the mostpresented compounds were classified in the following order: n-Hexadecanoic
acid ˃ Eugenol ˃ Camphor ˃ Borneol. The current study allowed somewhat to highlight EOs composition of three
Hypericumspecies in Syria for the first time.