Essential oil composition of Salvia eremophila Boiss. in different stages of plant growth in Yazd province

Salvia eremophila Boiss. belongs to Lamiaceae family is one of the most aromatic exclusive plants in Iran. This study was evaluated by comparing in quality and quantity of Salvia eremophila Boiss. essential oil during different stages of plant growth in spring and summer 2014 (Marvar region of Yazd province). Aerial parts of plant were collected in different stages: before blooming, in blooming, full blooming and fruit ripening. The essential oil samples were extracted by water-distillation (Clevenger apparatus) and were analyzed by GC and GC/MS. Results were showed that in both spring and summer the most amount of essential oil were related in fruit ripening stage equaled to 1.99 and 1.59 % respectively, in which α-pinene, borneol, bornyl acetate and camphene were the major compounds of essential oil during these two seasons, respectively. The α-pinene (35.97%) and camphene (12.11%) were the main components of plant essential oil in spring, while the borneol (24.37%) and bornyl acetate (19.26%) were the main essential oil components in summer stage, respectively. So in fruit ripening the plant had the highest amounts of essential oil yield and Salvia eremophila Boiss. is also reported as one of the sources of extracting alpha-pinene.