Fatty Acid Profile
Fatty acid methyl esters (FAMEs) were prepared according
to the standard IUPAC method 2.301 and analyzed on a
SHIMADZU gas chromatograph model 17-A with flame
ionization detector (FID). Separation was done on a capillary
column SP 2330 (30 m 9 0.32 mm 9 0.25 lm;
Supelco; Bellefonte, Pa., USA.). Nitrogen was used as a
carrier gas at a flow rate of 3.0 ml/min. Column temperature
was programmed from 180 to 220 C at the rate of
3 C/min. Initial and final temperatures were held for 2 and
10 min, respectively. Injector and detector were kept at 230
and 250 C, respectively. A sample volume of 1.0 ll was
injected with the split ratio of 1:75. FAMEs were identified
by comparing their relative and absolute retention times to
those of authentic standards. The quantification was done
by a Chromatography Station for Windows (CSW32) data
handling software (Data Apex Ltd. CZ-158 00 Pague 5, the
Czech Republic).The fatty acid composition was reported
as a relative percentage of the total peak area.