title: Geographical traceability of Italian white truffle (Tuber magnatum Pico) by the analysis of volatile organic compounds.
abstract: Results are presented that were obtained on the geographic traceability of the white truffle Tuber magnatum Pico. Solid-phase microextraction coupled to gas chromatography/mass spectrometry (SPME-GC/MS) was employed to characterize the volatile profile of T. magnatum white truffle produced in seven geographical areas of Italy. The main components of the volatile fraction were identified using SPME-GC/MS. Significant differences in the proportion of volatile constituents from truffles of different geographical areas were detected. The results suggest that, besides genetic factors, environmental conditions influence the formation of volatile organic compounds. The mass spectra of the volatile fraction of the samples were used as fingerprints to characterize the geographical origin. Next, stepwise factorial discriminant analysis afforded a limited number of characteristic fragment ions that allowed a geographical classification of the truffles studied.
authors.affiliation: Istituto di Ricerca sull'Attività Motoria, Via I. Maggetti 26, Università degli Studi di Urbino 'Carlo Bo', 61029 Urbino, Italy. anna.gioacchini@uniurb.it
authors.forename: Anna Maria
authors.initials: AM
authors.lastname: Gioacchini
authors.forename: Michele
authors.initials: M
authors.lastname: Menotta
authors.forename: Michele
authors.initials: M
authors.lastname: Guescini
authors.forename: Roberta
authors.initials: R
authors.lastname: Saltarelli
authors.forename: Paola
authors.initials: P
authors.lastname: Ceccaroli
authors.forename: Antonella
authors.initials: A
authors.lastname: Amicucci
authors.forename: Elena
authors.initials: E
authors.lastname: Barbieri
authors.forename: Giovanna
authors.initials: G
authors.lastname: Giomaro
authors.forename: Vilberto
authors.initials: V
authors.lastname: Stocchi
mesh_terms: D001203:Ascomycota / Q000737:chemistry*; D003627:Data Interpretation, Statistical; D008401:Gas Chromatography-Mass Spectrometry; D005843:Geography; D007558:Italy; D009930:Organic Chemicals / Q000032:analysis*; D052617:Solid Phase Microextraction; D014835:Volatilization
chemical_list: D009930:Organic Chemicals