The EI-MS operating parameters were as follow: ionization voltage, 70 eV; ion source temperature, 200◦C. Retention indices were calculated for all components using a homologous series ofn-alkanes (C5–C24) injected in conditions equal to samples ones. Identification of oil components was accomplished based on com-parison of their retention times with those of authentic standards and by comparison of their mass spectral fragmentation patterns(WILLEY/ChemStation data system (Adams, 2007)).