Reliability of the ΔeCN42 limit and global method for extra virgin olive oil purity assessment using different analytical approaches
2016
Beccaria, M. | Moret, E. | Purcaro, Giorgia | Pizzale, L. | Cotroneo, A. | Dugo, P. | Mondello, L. | Conte, L. S.
Inglés. peer reviewed
Mostrar más [+] Menos [-]Inglés. Two data elaboration approaches for evaluating olive oils authenticity were compared: (I) determination of the difference between the theoretical and actual amounts of triacylglycerols with partition number 42 (ΔECN42 ≤ |0.2|); and (II) the global method, which considers also partition numbers 44 and 46 (returning a "correct"/"not correct" result). Analysis of 31 genuine extra virgin olive oil samples was performed using different analytical methods, namely liquid chromatography (LC) coupled with a refractive index detector (RID) and LC coupled with a mass spectrometry (MS), and the results compared. Several false positives were highlighted using the ΔECN42 limit with both instrumental approaches. The global method algorithm returned "correct" results for all the samples analysed (except two that gave no results) with LC-MS; on the other hand, 10 false positives were obtained elaborating data deriving from NARP-LC-RID analysis. © 2015 Elsevier Ltd. All rights reserved.
Mostrar más [+] Menos [-]PRIN 2009: Advanced analytical and chemometric techniques applied to the assessment of triacylglycerol and linear esters profiles in edible oils as a tool for purity assessment and geographical traceability.
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