.Fatty acids
The extraction procedure was previously described by the
authors (Guimarães et al., 2013a). The gas-chromatography
equipment (DANI GC 1000, Contone, Switzerland) included
a split/splitless injector, a flame ionization detector (FID) at
260 ◦C, and a CSW 1.7 Software (DataApex 1.7). The chromatographic separation conditions were as follows: Macherey–Nagel
(Düren, Germany) column (50% cyanopropyl-methyl-50% phenylmethylpolysiloxane, 30 m × 0.32 mm i.d. × 0.25 m df); the initial
temperature of the column was 50 ◦C, held for 2 min, then a
30 ◦C/min ramp to 125 ◦C, 5 ◦C/min ramp to 160 ◦C, 20 ◦C/min ramp
to 180 ◦C, 3 ◦C/min ramp to 200 ◦C, 20 ◦C/min ramp to 220 ◦C and
held for 15 min; carrier gas (hydrogen) at 4.0 mL/ min (0.61 bar),
measured at 50 ◦C; split injection (1:40) at 250 ◦C. The identification was performed by comparison of the relative retention times
of samples FAME peaks with standards. The results were expressed
in g/100 g fat.