ESSENTIAL OILS OF RESINS FROM THREE PINUS SPECIES GROWING IN ETHIOPIA AND UGANDA

Abstract

The chemical composition of the hydro-distillates obtained from
resins of Pinus caribaea, P. radiala and P. patula growing in Ethiopia and P. caribaea from Uganda, were investigated by OC and OC-MS. Twenty compounds were identified representing co 92-99 % of the total oil. The only major constituent of P. caribaea of Uganda was a-pinene (87 %) whereas a-pinene and hornyl acetate, together accounted for 70.8% of the same oil obtained from Ethiopia. a-Pinene and p-pinene were identified as the major constituents of P. radiata oil. P. patula oil is characterized by large amount of a-farnesene (33.2%).