NMR analysis of Extra Virgin Olive Oil - classification through secoiridoids.

BACKGROUND

Extra Virgin Olive oil (EVOO), a natural product with a multidiscipline role has been and is continuing to be studied from several points of view. Among them, its chemical analysis is of major importance and several methods have been used. NMR spectroscopy bears its inherent advantages, among them monitoring the chemical constituents without the need of a separation technique and without for instance possible carry over effects. Additionally, several magnetic resonance spectroscopy techniques can provide a novel powered insight in the nature and the properties of a sample under study. Moreover, -omics procedure can reveal new information and can lead to the classification of populations under study. The main objective of the present work was the possible classification of the EVOO samples based on their aldehyde content using a proposed unreferenced

RESULTS

Univariate analysis of twelve EVOO samples showed that oleacein, oleocanthal, elenolic acid, the hydroxytyrosol / hydroxytyrosol derivatives and tyrosol / tyrosol derivatives, strongly differentiate the two classes of EVOO: the OEH (for high aldehyde EVOO content) and the OE (for non-high aldehyde content). Moreover, we pointed out the "impact" of such elevated secoiridoid and derivatives' content, through their moieties' units, on a range of several resonances of the

CONCLUSIONS

An unreferenced quantification method was proposed and EVOO samples were classified into two classes: OEH and OE according to their aldehyde content gaining thus probably higher nutrient and possible pharmacological value. Moreover, we point out the "impact" of such elevated aldehyde content on several spectral regions of the

Informations de copyright

Copyright © 2023 Society of Chemical Industry.