Influence of Horizontal Centrifugation Processes on the Content of Phenolic Secoiridoids and Their Oxidized Derivatives in Commercial Olive Oils: An Insight by Liquid Chromatography–High-Resolution Mass Spectrometry and Chemometrics

Reversed-phase liquid chromatography with electrospray ionization–high-resolution/accuracy Fourier transform mass spectrometry (RPC-ESI-FTMS) and chemometrics were exploited to evaluate the influence of horizontal centrifugation by two- or three-phase decanters on the content of major phenolic secoi...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2020-03, Vol.68 (10), p.3171-3183
Main Authors: De Ceglie, Cristina, Abbattista, Ramona, Losito, Ilario, Castellaneta, Andrea, Calvano, Cosima Damiana, Bianco, Giuliana, Palmisano, Francesco, Cataldi, Tommaso R. I
Format: Article
Language:English
Subjects:
Centrifugation - methods
Chromatography, Reverse-Phase
Food Handling - methods
Fruit - chemistry
Iridoids - chemistry
Olea - chemistry
Olive Oil - chemistry
Oxidation-Reduction
Phenols - chemistry
Spectrometry, Mass, Electrospray Ionization
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Summary:Reversed-phase liquid chromatography with electrospray ionization–high-resolution/accuracy Fourier transform mass spectrometry (RPC-ESI-FTMS) and chemometrics were exploited to evaluate the influence of horizontal centrifugation by two- or three-phase decanters on the content of major phenolic secoiridoids in extravirgin olive oils (EVOOs). Despite the occurrence of other potential sources of variability typical of commercial olive oils, horizontal centrifugation was found to play a primary role, with a general increase of secoiridoid content occurring when two-phase decanters were used. As emphasized by principal component analysis (PCA), the increase involved preferentially oleacin and oleocanthal, when oxidative deterioration was purposely minimized during and/or after production, and oleuropein and ligstroside aglycones, when no vertical centrifugation was performed at the end of the productive cycle. The influence of the type of horizontal centrifugation was also emphasized by the elaboration of RPC-ESI-FTMS data based on hierarchical cluster analysis (HCA) and linear discriminant analysis (LDA).
ISSN:0021-8561
1520-5118
DOI:10.1021/acs.jafc.0c00455