Robustness of NMR-based metabolomics to generate comparable data sets for olive oil cultivar classification.  An inter-laboratory study on Apulian olive oils.Nuclear Magnetic Resonance (NMR) spectroscopy is emerging as a powerful technique in olive oil fingerprinting, but its analytical robustness has to be proved.  Here, we report a comparative study between two laboratories on olive oil (1)H NMR fingerprinting, aiming to demonstrate the robustness of NMR-based metabolomics in generating comparable data sets for cultivar classification. 
NMR
Partial Least Squares (PLS)-based techniques were applied to compare the data sets produced by the two laboratories. 
PLS