title: Phenolic Profiling of Olives and Olive Oil Process-Derived Matrices Using UPLC-DAD-ESI-QTOF-HRMS Analysis.
abstract: All of the matrices entailed in olive oil processing were screened for the presence of known and new phenol constituents in a single study, combining an ultra high pressure liquid chromatography system with diode array and electrospray ionization quadrupole time-of-flight high resolution mass spectrometry (ESI-QTOF-HRMS) detection. Their trail was followed from the fruit (peel/pulp and stone) to the paste and final products, i.e. pomace, wastewater, and oil, providing important insight into the origin, disappearance, and evolution of each during the operational steps. Eighty different phenols, composed of fruit native representatives and their technologically formed and/or released derivatives, were detected in six olive matrices and fully characterized on the basis of HRMS and UV-vis spectroscopic data. In addition to phenols already known in olive matrices, four new molecular formulas were proposed and three new tentative identities assigned to newly discovered phenols, i.e., β-methyl-OH-verbascoside, methoxynüzhenide, and methoxynüzhenide 11-methyl oleoside.
authors.affiliation: †Wine Research Centre, University of Nova Gorica, Glavni trg 8, 5271 Vipava, Slovenia.
authors.forename: Tina Jerman
authors.initials: TJ
authors.lastname: Klen
authors.affiliation: ‡Centre for Validation Technologies and Analytics, National Institute of Chemistry, Hajdrichova 19, Ljubljana 1000, Slovenia.
authors.forename: Alenka Golc
authors.initials: AG
authors.lastname: Wondra
authors.affiliation: §Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010 San Michele all'Adige, Trentino, Italy.
authors.forename: Urška
authors.initials: U
authors.lastname: Vrhovšek
authors.affiliation: †Wine Research Centre, University of Nova Gorica, Glavni trg 8, 5271 Vipava, Slovenia.
authors.forename: Branka Mozetič
authors.initials: BM
authors.lastname: Vodopivec
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005638:Fruit / Q000737:chemistry; D015394:Molecular Structure; D031658:Olea / Q000737:chemistry*; D000069463:Olive Oil / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D053719:Tandem Mass Spectrometry
chemical_list: D000069463:Olive Oil; D010636:Phenols
keywords: high resolution mass spectrometry spectra; olive oil; olive waste; olives; phenol; ultraviolet−visible spectra