3.1. Extraction yield of essential oils
The volatile oil extracted from fruits of E. globulus plant was yellow, having camphor like smell and pleasant odor. The extraction yield was about 3.1 ± 0.4%, which is higher than those found by Mulyaningsih et al. (2010), Pereira et al. (2005) and Selvakumar(2012) (0.7%, 1.6% and 0.7%, respectively). As reported by Gilles et al.(2010), environmental, agronomic, age, genotype and geoclimatics factors can all affect the total essential oil content of plants. In addition, the method and the extraction conditions may influence the percentage recoveries