Past studies indicated the presence of
anethol (Andarwulan and Shetty, 1999), anisaldehyde (Reichling et al., 1995), coumarins (Kartnig et al., 1975), eugenol (Al Mofleh et al., 2007) and terpenes (Burkhardt et al., 1986) as abundant constituents among others which are actually responsible for scavenging of free radicals.
Anethol, the 4th odorant, showed clear olfactory neural activation and attraction in some scarab beetles (Hansson et al.
Our findings are in agreement with those noted by Abd-El-Hady [70] who fed weaned rabbits diets contained 0, 300 and 400 gm digestarom [(contained active components: menthol (3.00% of peppermint),
anethol (0.45% of anise, fennel) and carvon (0.035% of caraway)/ton].
(2006), who conducted in vitro studies, reported that addition of
anethol (3,000 mg/L), carvacrol and carvone (300 mg/L) had no effect on N[H.sub.3]-N concentration.