Helium was used as carrier
gas at a velocity of 20 cm/s with electronic pressure control
and split ratio 100:1. The temperature was programed from 50–
250 C rising at 4 C/min. The injector temperature was 250 C,
the detector 260 C. One microliters of toluene extract, containing
the methyl esters of fatty acids, was injected, using an Agilent 7683
series injector. Individual fatty acids were identified by comparing
their retention time with commercially available mixtures of 37
components FAME MIX Standard