Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry

Unravelling the Scent of Vetiver: Identification of Character‐Impact Compounds

“…5). For most of our panellists, 9 and 10 provided FD factors of 16 to 64 times higher than khusimone (3), albeit their abundance in the sample studied was approximately twice lower [36]. Consequently, their odor contributions appear here as fundamental for the vetiver scent.…”

“…Its odor was evaluated in a fraction of vetiver oil where the absence of co-eluting compound was assessed by GC Â GC analysis. Interestingly, the structurallyrelated alcohol, b-vetivol (22), was recently identified as a constituent of vetiver oil [36] but has never been mentioned as an odoriferous constituent. This strong-smelling compound provided a powerful rosy, lychee-like note, but an important interindividual variability was observed within the panel.…”

“…2-Epizizanal (14) was perceived as providing a clear vetiver-like character without any aqueous undertone. To roughly determine their odor contribution to the global vetiver scent, we performed olfactory analyses of successive dilutions of a solution containing khusimone (3) and these three aldehydes in a similar ratio to that observed in Haitian vetiver oil (see [36]). It was thus possible to conclude that the odor of 3 lasted longer than that contributed by the two zizanals.…”

Potential of the reversed-inject differential flow modulator for comprehensive two-dimensional gas chromatography in the quantitative profiling and fingerprinting of essential oils of different complexity

“…Vetiver EO composition is characterized by a complex sesquiterpenoid fraction that includes hydrocarbons, alcohols, aldehydes, ketones, and acids [32,38]. These constituents can be classified in function of their sesquiterpene skeletons, i.e.…”

“…The approach was introduced by de Saint Laumer et al [24] and applied to vetiver EOs qualification by GC × GC-FID by FIlippi et al [32] and to mint and lavender EOs quantitative profiling by GC × 2GC-FID/MS by Sgorbini et al [33]. The latter instrumental configuration, that inspired the current set-up implemented with the differential flow-modulation GC × GC, provides data for simultaneous analyte identification (EI-MS full spectrum) and quantitation (MS single ions and FID responses) with possibility of an internal cross-validation of the results [34].…”