The GC–MS analysis of the volatile fractions
and the derivatives
of the non-volatile compounds were achieved using an ISQ 7000 Single
Quadrupole GC–MS apparatus equipped with a TraceGOLD TG-5MS
GC (5% phenyl and 95% dimethyl polysiloxane) capillary column (30
m × 0.25 mm i.d.; 0.25 μm film). The experimental parameters
of the GC–MS instrument are similar to our previous published
work.35 (link)The mass spectrometric data
were obtained using an ESI-MS mass spectrometer with an LCQ FLEET
system from Thermo Scientific Company (USA) with a mass scanning range
of 0–2000. Nitrogen was used as nebulizing gas, and helium
(grade 5.8) was used as carrier gas. The sample was dissolved in HPLC-grade
acetonitrile and introduced by direct infusion with a syringe pump
employing a 250 mL syringe at a constant flow rate of 3 mL min–1.
and the derivatives
of the non-volatile compounds were achieved using an ISQ 7000 Single
Quadrupole GC–MS apparatus equipped with a TraceGOLD TG-5MS
GC (5% phenyl and 95% dimethyl polysiloxane) capillary column (30
m × 0.25 mm i.d.; 0.25 μm film). The experimental parameters
of the GC–MS instrument are similar to our previous published
work.35 (link)The mass spectrometric data
were obtained using an ESI-MS mass spectrometer with an LCQ FLEET
system from Thermo Scientific Company (USA) with a mass scanning range
of 0–2000. Nitrogen was used as nebulizing gas, and helium
(grade 5.8) was used as carrier gas. The sample was dissolved in HPLC-grade
acetonitrile and introduced by direct infusion with a syringe pump
employing a 250 mL syringe at a constant flow rate of 3 mL min–1.
