Combined targeted and untargeted profiling of volatile aroma compounds with comprehensive two-dimensional gas chromatography for differentiation of virgin olive oils according to variety and geographical origin

Food Chemistry
Igor LukićUrska Vrhovsek

Abstract

Comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOF-MS) was combined with conventional mono-dimensional GC-MS to differentiate Croatian virgin olive oils (VOO) according to variety and geographical origin, based on the profile of volatile aroma compounds isolated by HS-SPME. More than 1000 compounds were detected after untargeted profiling and 256 were identified or tentatively identified, providing one of the most detailed profiles of volatile aroma compounds in VOO up to date. Among them, 131 volatile compounds were significantly different across monovarietal VOOs, while 60 were found useful for the discrimination according to geographical origin. Many major lipoxygenase and minor non-lipoxygenase-generated compounds were shown to have discriminating ability with respect to both factors. Multivariate statistical analysis extracted twenty-one volatile markers with the highest discriminant power for varietal differentiation. The approach reported may have practical application in better understanding, defining, managing, and communicating the varietal or geographical typicity of monovarietal VOOs.

Citations

Jun 5, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Michelle S S Amaral, Philip J Marriott
Sep 25, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Chen-Yu QianChao-Chan Li
Aug 26, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Theano MikrouAthanasios Mallouchos
Nov 17, 2019·Food Research International·Lilia ZagoFrancesco Caponio
Dec 11, 2020·NPJ Science of Food·Daisuke SuzukiHirotoshi Tamura
Jan 28, 2021·Journal of the Science of Food and Agriculture·Sonia Tomé-RodríguezFeliciano Priego-Capote
Jun 12, 2021·Food Research International·Maria Pérez-JiménezFarhana R Pinu
Jul 29, 2021·Journal of Agricultural and Food Chemistry·Federico StiloChiara Cordero
Oct 19, 2019·Analytical Chemistry·Frederik A Hansen, Stig Pedersen-Bjergaard
Dec 19, 2019·Analytical Chemistry·Michelle S S AmaralPhilip John Marriott
Jul 3, 2021·NPJ Science of Food·Daisuke SuzukiHirotoshi Tamura

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