Oils from the fruit mesocarps of six palm species were studied (Jessen
ia bataua Jacq., Astrocaryum vulgare C. Martius, Euterpe oleracea C. M
artius, Oenocarpus bacaba C. Martius, Elaeis oleifera H.B.K. Cortes, B
actris gasipaes H.B.K.). The fatty acid composition, determined by gas
chromatography (GC), revealed the predominance of oleic acid in all t
he oils (39 to 70%). GC analysis of the sterols revealed the existence
of delta 5 sterols and beta sitosterol in particular (36 to 78%) in t
he oils. Finally, an HPLC study of the tocopherols and tocotrienols ge
nerally showed a strong predominance of alpha tocopherol in the bandin
g patterns, but also the existence of tocotrienols in varying proporti
ons. Only the oil from the Elaeis oleifera H.B.K. Cortes species was r
icher in tocotrienols than in tocopherols.