“…Abbreviations: OO, olive oil; FIA, flow injection analysis; MRMS, magnetic resonance mass spectrometry; EVOO, extra virgin olive oil; VOO, virgin olive oil; IOC, International Olive oil Council; PGI, protected geographical indication; PDO, protected designation of origin; MUFA, monounsaturated fatty acid; FA, fatty acids; EFSA, European Food Safety Authority; TGs, triacylglycerides; DGs, diglycerides; FFAs, free fatty acids; MUFA, monounsaturated fatty acids; MDA, multivariate data analysis; TPC, total phenolic content; NaTFA, sodium trifluoroacetate; MeOH, methanol; ESI, electrospray ionization source; PCA, principal component analysis; OPLS-DA, orthogonal partial least squaresdiscriminant analysis; VIP, variable importance in projection; UVS, unit variance scaling. 1 http://www.internationaloliveoil.org/estaticos/view/83-designations-anddefinitions-of-olive-oils list of most fraudulent food products worldwide 2 . In most cases, the fraud consists of mixing EVOO with lower quality OOs such as deodorized oil, other vegetables oils, or even not edible oils, e.g., lamp oil.…”