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Profiling of pentacyclic triterpenes and polyphenols by LC-MS in Arbequina and Empeltre table olives

Moreno-González, Rocío, Juan, M. Emília, Planas, Joana M.
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2020 v.126 pp. 109310
bioactive compounds, chronic diseases, electrospray ionization mass spectrometry, erythrodiol, lifestyle, liquid chromatography, luteolin, oleanolic acid, olives, polyphenols, tandem mass spectrometry, verbascoside
Pentacyclic triterpenes (PT) and polyphenols from two varieties of table olives, Arbequina and Empeltre, were determined using a unique extraction from the same olive samples prior to their analysis by LC-APCI-MS and LC-ESI-MS/MS, respectively. Validation provided linear correlation and high sensitivity, as well as adequate precision and accuracy (RSD < 15.0%). The analysis of these table olives allowed the identification and quantification of 3 PT and 16 polyphenols. The most abundant were PT, with a total content of 3.28 g/kg in Arbequina and 2.77 g/kg in Empeltre, ahead of 1.04 g/kg and 0.83 g/kg of polyphenols, respectively. The main PT was maslinic acid, with 2.51 g/kg in Arbequina and 1.86 g/kg in Empeltre, followed by oleanolic acid and finally, erythrodiol. The main polyphenol was hydroxytyrosol, with 0.51 g/kg in Arbequina and 0.39 g/kg in Empeltre, succeeded by luteolin and verbascoside. Bioactive compounds were found in concentrations high enough to exert beneficial effects on health, thus suggesting that a regular consumption of table olives, in the context of a healthy lifestyle, could contribute to the prevention of chronic diseases.