The oils were analyzed using a Perkin-Elmer (Italy) gas
chromatograph (Model 8500) equipped with flame ionization
detector (FID), GP-100 printer-plotter and an electronic
integrator using BP-1 (SGE, USA) (25 m × 0.5 mm i.d. ×
0.25m film thickness) capillary column coated with polydimethylsiloxane.