Chemical composition of the essential oils isolated from Phlomis olivieri Benth (Lamiaceae) in Hamedan province

Phlomis olivieri Benth is a valuable medicinal plant in the flora of Iran and can be collected in different parts of the country. To date, no comprehensive phytochemical research has been done on it in different parts of Iran. In this research, the essential oils of this medicinal plant were investigated in Hamedan province. For this, aerial parts of the plant were collected in its natural habitats, dried under the shade condition (approximately ۲۵°C), and then powdered. The essential oil was isolated by Clevenger apparatus and chemically analyzed by a Gas Chromatography. In the chemical structure of this plant, ۱۷ and ۱۱ constituents were identified in Ganjnameh and Nahavand (Hamedan province. The results showed that caryophyllene in Ganjnameh and Nahavand in Hamadan province were dominant constituents. Therefore, this valuable medicinal plant has diverse chemical constituents in studied provinces in Iran which should be considered from different aspects.

Keywords:

Phlomis olivieri , Hamedan province , chemical analysis , GC-MS , constituents