“…This is the main reason of the extended use of multivariate pattern recognition approaches to built successful models to verify PDO claims. Chemometric tools generally used for PDO authentication are principal component analysis (PCA), as unsupervised method (Gori, Maggio, Cerretani, Nocetti, & Caboni, 2012;Zhang et al, 2008), and linear discriminant analysis (LDA), partial least squares discriminant analysis (PLSDA) and soft independent modelling of class analogy (SIMCA) as supervised methods (Bevilacqua, Bucci, Magri, Magri, & Marini, 2012;Boeting et al, 2010;Korifi, Le Dreau, Molinet, Artaud, & Dupuy, 2011;Matos-Reyes et al, 2013).…”