Fatty acid composition was determined according to the
Tunisian Norm NT 118.05 (1995). The oil samples were analyzed on
a HP gas chromatograph Hewlett Packard type 5890 (Agilent technologies,
CA, USA) equipped by 100m×0.25mmcapillary column.
The injected volumewas 1l and the carrier gas flowing inside the
column is Helium. The chromatograph was equipped with flame
ionization detectors (FID). The temperature of injector was 250 ◦C.
The temperature of the detector placed at the column outlet is
280 ◦C.