A literature search revealed trans-

A literature search revealed trans-anethole
(62.0%), fenchone (20.3%), estragole (4.90%) and limonene (3.15%)
to be the main components of essential oils from wild-growing
fennel seed native to the Podgorica region, central south Montenegro
Damjanovic et al. (2005). Mimica-Dukic et al. (2003a,b)
also reported trans-anethole (74.18%), fenchone (11.32%), estragole
(5.29%), limonene (2.53%) and -pinene (2.77%) as the major compounds
identified in the essential oil from F. vulgare Mill. Ozcan et al.
(2006) reported estragole (61.08% and 40.49%), fenchone (23.46%
and 16.90%) and limonene (8.68% and 17.66%), respectively, as the
major constituents in the essential oil of bitter fennel (F. vulgare
spp. piperitum) grown in Turkey.