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. 2020 Aug 21;7:120. doi: 10.3389/fnut.2020.00120

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Copyright © 2020 Romani, Campo, Urciuoli, Marrone, Noce and Bernini.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Chromatograms at 280, 240, and 330 nm of OLP1. 1. Hydroxytyrosol glucoside; 2. Hydroxytyrosol (HT); 3. Demethyl elenolic acid diglucoside; 4. Caffeic acid derivative; 5. Oleoside; 6. p-Coumaric acid; 7; Chlorogenic acid; 8. Derivative list oil; 9. β-OH-verbascoside; 10. Verbascoside; 11. Luteolin 7-O-glucoside, 12. Oleuropein (OLE); 13. Oleuropein aglycone.