Classification of olive oils according to geographical origin by using 1H NMR fingerprinting combined with multivariate analysis

► Italian and Greek olive oils were analysed by NMR to discriminate their origin. ► NMR one pulse experiment was used to get major constituent signals of olive oils. ► Multiple saturation experiment was used to get minor compound signals. ► The combination of two NMR experiments allowed an enhancement of the dynamic range. ► An average correct prediction of 78.2% was obtained for the different origins.