Identification of phenolic markers for saffron authenticity and origin: An untargeted metabolomics approach

Gabriele Rocchetti, Matteo Busconi, Luigi Lucini, Marco Trevisan, Biancamaria Senizza, Silvia Ghisoni, Marcelino De Los Mozos Pascual, José Antonio Fernandez

Risultato della ricerca: Contributo in rivistaArticolo in rivista

16 Citazioni (Scopus)

Abstract

Saffron is a high-quality and expensive spice being widely subjected to adulteration. An UHPLC-ESI/QTOF-MS metabolomic-based approach was therefore used to investigate the discrimination potential between adulterated (added with different percentage of other parts of the flower) and authentic saffron, as well as to trace its geographical origin. Both unsupervised (hierarchical clustering) and supervised OPLS-DA multivariate statistics allowed discriminating authentic saffron from styles added of other floral components, as well as PDO (Protected Designation of Origin) vs non PDO saffron samples according to their chemical fingerprints. The proposed markers were then validated through ROC curves. Anthocyanins and glycosidic flavonols were the best markers of the styles' adulteration. However, other flavonoids (mainly free flavonols and flavones), together with protocatechuic aldehyde and isomeric forms of hydroxybenzoic acid, were also validated as markers for the discrimination of PDO vs non PDO saffron samples. This work outlines the potential of untargeted metabolomics based on UHPLC-ESI/QTOF mass spectrometry for saffron authenticity and traceability.
Lingua originaleEnglish
pagine (da-a)108584-108584
Numero di pagine1
RivistaFood Research International
Volume126
DOI
Stato di pubblicazionePubblicato - 2019

Keywords

  • Crocus sativus
  • Food integrity
  • Food metabolomics
  • Multivariate statistics
  • Polyphenols

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