title: Characterization of the yerba mate (Ilex paraguariensis) volatile fraction using solid-phase microextraction-comprehensive 2-D GC-MS.
abstract: The present research is focused on the use of a solid-phase microextraction-comprehensive 2-D GC methodology, in the analysis of the volatile fraction of yerba mate. Yerba mate is used for the generation of a tea-like beverage, widely consumed in South America. A rapid-scanning quadrupole mass spectrometer (qMS), employed as a detection system and operated at a 25 Hz scanning frequency, supplied high-quality mass spectra. The effectiveness of the 3-D comprehensive 2-D GC-qMS experiment was compared to that of GC-qMS analysis on the same sample. Peak identification, in both applications, was achieved through MS library matching, with the support of linear retention index data. Apart from a great increase in the number of analytes separated (approx. by a factor of 5) and identified (approx. by a factor of 3.5), the comprehensive 2-D GC-qMS approach enabled the determination of a high number of hazardous contaminants (aliphatic hydrocarbons, polycyclic aromatic hydrocarbons, and plasticizers), barely visible in the GC-qMS analysis.
authors.affiliation: Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università di Messina, Messina, Italy.
authors.forename: Giorga
authors.initials: G
authors.lastname: Purcaro
authors.forename: Peter Q
authors.initials: PQ
authors.lastname: Tranchida
authors.forename: Rosângela Assis
authors.initials: RA
authors.lastname: Jacques
authors.forename: Elina Bastos
authors.initials: EB
authors.lastname: Caramão
authors.forename: Sabrina
authors.initials: S
authors.lastname: Moret
authors.forename: Lanfranco
authors.initials: L
authors.lastname: Conte
authors.forename: Paola
authors.initials: P
authors.lastname: Dugo
authors.forename: Giovanni
authors.initials: G
authors.lastname: Dugo
authors.forename: Luigi
authors.initials: L
authors.lastname: Mondello
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D030017:Ilex / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D014835:Volatilization
chemical_list: D010936:Plant Extracts