The analyses were carried out in temperature gradient as follow:
3 min at 38 C, temperature increase up to 150 C at
7 C min1, then final increase up to 250 C at 30 C min1. The carrier
gas (He) flow was 1 mL min1. MS was working in full scan
mode from 33.00 to 350.00 m/z. Ionisation was achieved by electron
impact working at 70 eV. XCalibur v2.0 software on a DELL
elaborator was used for GC–MS data elaboration