acetone and then dried.
In order to eliminate the influence of temperature in the var-iation between spectra, samples were measured under thermo-stated conditions at 3570.5 °C.
In order to remove the oil turbidity, in particular of the au-thentic samples, that could compromise the NIR and UV–visible spectra, all the e.v. olive oils were centrifuged at 3000 rpm for 30 min before being analysed.