Comparison of triacylglycerol analysis by MALDI- TOF/MS, fatty acid analysis by GC-MS and non- selective analysis by NIRS in combination with chemometrics for determination of extra virgin olive oil geographical origin. A case study (CROSBI ID 251673)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Peršurić, Željka ; Saftić, Lara ; Mašek, Tomislav ; Kraljević Pavelić, Sandra
engleski
Comparison of triacylglycerol analysis by MALDI- TOF/MS, fatty acid analysis by GC-MS and non- selective analysis by NIRS in combination with chemometrics for determination of extra virgin olive oil geographical origin. A case study
Synergy of analytical methods based on chromatography, mass spectrometry and spectroscopy combined with chemometrics was tested in the herein presented pilot authentication study of Croatian extra virgin olive oils (EVOOs). Fatty acid (FA) composition was determined by gas chromatography-mass spectrometry (GC-MS), triacylglycerol (TAG) composition by matrix-assisted laser desorption ionization time-of-flight/mass spectrometry (MALDI-TOF/MS), and non-selective analysis was done by near-infrared spectroscopy (NIRS). Chemometric methods were applied on measured data where TAG and NIR spectra showed the highest potential for geographical origin discrimination. TAG profiling data had the best classification power for EVOOs in the PCA, whereas PLS-DA models with high classification accuracy were based on NIRS significant variables or TAG data. Furthermore, NIRS data proved valuable in prediction of quality parameters. Therefore, we presented NIRS as quick, cheap and reliable technique for authenticity study of EVOOs, but for complete characterization of olive oils MALDI-TOF/MS was indispensable.
GC-MS ; NIRS ; MALDI-TOF/MS ; Extra virgin olive oil ; Chemometrics
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Podaci o izdanju
95
2018.
326-332
objavljeno
0023-6438
1096-1127
10.1016/j.lwt.2018.04.072
Povezanost rada
Biotehnologija u biomedicini (prirodno područje, biomedicina i zdravstvo, biotehničko područje), Biotehnologija, Nutricionizam