The Study of the Composition of the Essential Oil of Eucalyptus gillii and E.leu-coxylon and to fractionate monoterpenoids and sesquiterpenoids by Clevenger apparatus

The essential oils from the leaves of Eucalyptus gillii and E.leu-coxilon were isolated by hydro distillation in two fractions and analyzed by GC/ MS.The oil consisted mainly of monoterpenes and sesquiterpenes. The major components found in the oil of E.gillii respectively for fractions of 1 and 2 were 1,8-cineol (89.07-77.6%), alpha-pinene (4.5-11.5%) and Viridiflorol (0.65-5.39%) and for E.leu-coxilon respectively 1,8-cineol (78.13-36.77%), alpha-pinene (10.44-26.77%) and Viridiflorol (0.0-11.5 %)