Abstract
The essential oils from aerial parts of Ferulago pachyloba (Fenzl) Boiss., F. platycarpa Boiss. Bal., F. isaurica Peşmen, and F. longistylis Boiss. (Apiaceae) were obtained by hydrodistillation and analyzed by GC and GC-MS. The highest oil yield (1.50%) was obtained from F. pachyloba followed by F. longistylis (0.16%), F. isaurica (0.08%) and F. platycarpa (0.07%). Fifty-three compounds were identified in the oil of F. pachyloba with (Z)-β-ocimene (25.7%) and α-pinene (9.8%) as main constituents; sixty-seven in the oil of F. platycarpa with 2,3,6-trimethylbenzaldehyde (29.8%) and cis-chrysanthenyl acetate (24.2%) as main components; seventy-eight in the oil of F. isaurica with nonacosane (25.5%) and hexadecanoic acid (14.8%) as main constituents; and fifty-nine in the oil of F. longistylis with 2,3,6-trimethylbenzaldehyde (32.7%) and bornyl acetate (12.6%) as main components. Quantitative and qualitative differences in the oil compositions of these four species were observed.