10 research outputs found
Solid-phase microextraction gas chromatography/mass spectrometry: a new method for species identification of truffles
Solid-phase microextraction gas chromatography/mass spectrometry: a new method for species identification of truffles.
Geographical traceability of Italian white truffle (Tuber magnatum Pico) by the analysis of volatile organic compounds
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