Profiling of grape monoterpene glycosides (aroma precursors) by ultra-high performanceliquid chromatography-high resolution mass spectrometry (UHPLC/QTOF)

Luigi Bavaresco, Riccardo Flamini, Mirko De Rosso, Annarita Panighel, Antonio Dalla Vedova, Fabiola De Marchi

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

A ‘suspect screening analysis’ method for grape metabolomics by ultra-high performance-liquid chromatography (UHPLC) and highresolution quadrupole-time of flight (QTOF) mass spectrometry was recently developed. This method was applied to study grape monoterpene glycosides, the main grape aroma precursors. Since standard compounds were not available, they were tentatively identified by overlapping various analytical approaches, in agreement with the indications recommended in mass spectrometry (MS)-based metabolomics. Accurate mass and isotopic pattern, MS/MS fragmentation, correlation between fragments observed and putative structures and between liquid chromatography coupled with mass spectrometry (LC/MS) and gas chromatography/ mass spectrometry signals were studied. Seventeen monoterpene glycosides were identified without performing the hydrolytic artifacts commonly used to study these compounds whichmay affect sample profile. This is the first time that a detailed study of these aroma precursors has been carried out by direct LC/MS analysis.
Original languageEnglish
Pages (from-to)1214-1222
Number of pages9
JournalJournal of Mass Spectrometry
Volume49
DOIs
Publication statusPublished - 2014

Keywords

  • aroma precursors
  • grape
  • metabolomics
  • monoterpene glycosides
  • time-of-flight mass spectrometry

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