2.3. Gas chromatography GC-FID
The essential oils were analysed on a Shimadzu gas chromatograph Model GC2010, equipped
with a DB-5 MS column (30m x 0.25mm; 0.25μm), programming from 50°C (5 min) to 300°C at
5°C/min, 5 min hold. Hydrogen was used as carrier gas (1.0 mL/min); injection in split mode (1:60);
injector and detector temperatures were 250°C and 280°C respectively. The essential oil was diluted in
hexane (1/30) for the analyses.