Preparation and analysis of the oilAir-dried aerial parts of Am (250 g) and As (500 g) were ground and subjected, separately, to hydrodistillation for 4h using a Clevenger-type apparatus with 5 L rounded-bottomed flask. After decanting and drying over anhydrous sodium sulfate, the corre- sponding oils were purified, resulting in a yield of 0.095% and 0.25% w/w, respectively