Oil content was determined by Butt Extraction (11)
with petroleum ether as solvent. Fatty acids were esterified
according to the method of Metcalfe et al. (12), and analyzed
on a Varian 3700 gas chromatograph using a 6 ft
x 2 mm glass column packed with 5% LAC-2-R 446 on
Gas-Chrom Qat 180 C.