For analysis of tocopherols Agilent 7890 A GC equipped with Agilent 5975 MSD has been used. For this analysis GC–MS was fitted with HP-5MS (Agilent J&W 19091S-433) column (30m × 0.25 mm ID, 0.25 m). The temperature of injection port was 250◦C, splitless injection. The temperature of transfer line was 280◦C. The initial oven temperature was set at 200◦C for 3 min, and then programmed as 8◦C/min to 280◦C. The carrier gas was He. MS conditions were: scan (45 to 450 amu), threshold 100 MS quad 150◦C, MS source 250◦C. Injected sample volume was 1 l. The identification of components was carried out based on computer matching with NIST 2008 MS library. Quantification of compounds was provided using calibration curves. Standard compounds were dissolved in n-hexane to prepare six different concentration of each standard compound. R2 for each calibration curve was 0.999. All analyses were performed in triplicate.