The column temperature initially at
160C was increased at the rate of 3C/min and main-
tained at 226C for 12 min. The individual fatty acids
were identi®ed by frequent comparisons with authentic
standards and calculated on a Varian 4270 integrator.
All fatty acid methyl ester standards and heptadecanoic
acid were purchased from Nuchek laboratories. Sol-
vents used were of analytical grade and contained 25 mg
butylated hydroxy toluene (BHT) per litre. The fatty
acid composition was expressed as percentage of the
total oil.