GC-MS ANALYSIS AND ANTIBACTERIAL ACTIVITY OF ESSENTIAL OIL OF CALLISTEMON PALLIDUS OF MEKELLE, ETHIOPIA

The constituents of essential oil isolated by hydro distillation of the aerial parts of Callistemon pallidus, Myrtaceae family, from
Ethiopia was examined by GC-MS. A total of 13 components were identified accounting for 81.58% of the oil of C.pallidus. The oil
contained, as the main components, 1, 8-cineloe (56.75%), caryophyllene (3.78%), caryophyllene oxide (2.89%), ? -pinene (2.87%),
3-carene (2.54 %), cubenol (2.09%) and fenchol(1.91%). The essential oil of C.pallidus exhibited significant anti bacterial activity
against gram positive (Staphylococcus auerus) than gram negative bacteria (Escherichia coli).