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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.