*2.1. Distillation and Physical Properties*

The essential oil of the fresh aerial parts of *Jungia rugosa* was obtained by steam distillation for 4 h, yielding an average of 0.09 (*w*/*w*). The physical properties, chemical composition and enantiomeric analysis are discussed below.

Two physical properties were determined: relative density (*d* = 0.898 ± 0.012 g/mL) and refractive index (*η* = 1.505 ± 0.002). These properties are notoriously determined by genetic characteristics, geographical location, and phenological stage of the plant [24].
