2.3. TAG composition
A capillary column DB-
17HT Agilent (50% phenyl-methylpolysiloxane,15m_ 0.25mmi.d.,
0.15 mm film thickness) was used. The operating conditions were:
split, ratio of 1:100; column temperature: 250 _C, programmed to
340 _C at the rate of 5 _C/min; carrier gas: helium, at a flow rate of
1.0 mL/min; injector temperature: 375 _C, detector temperature:
375 _C; injected volume: 1.0 mL; sample concentration: 100 mg/
5 mL of tetrahydrofuran.
The identification of TAGs peaks was
performed by comparison of the retention times, according to the
procedure of Antoniosi Filho, Mendes, and Lanças (1995).