TABLE 3.
Phenolic compounds found in olive leaves extracts and their biological activities.
| Phenolic compound | Biological activities | References |
| -Secoiridoids (oleuropein), -Simple phenols (Hydroxytyrosol, tyrosol), -Phenolic acids (Cinnamic acid, Gallic acid, Syringic acid, p-coumaric acid, Ferulic acid, Caffeic acid, Vanillic acid), -Flavonols (Rutin, Quercetin), -Flavanol (Catechin), and -Flavone (Luteolin) | Antioxidant activity | (210) |
| -Flavones (Luteolin, Luteolin-4′-O-glucoside, Apigenin, Apigenin-7-Oglucoside), and -Flavonols (Rutin, Quercetin) | Antioxidant and anticancer impacts | (211) |
| -Secoiridoids (Oleuropein), Phenolic acids (Verbascoside), -Flavones (Luteolin, glucoside) | Neuroprotective effects | (212) |
| -Secoiridoids (oleuropein, Oleacin, Oleuropein aglycone, Demethyloleuropein), and -Simple Phenols (Hydroxytyrosol, Tyrosol) | Not mentioned | (213) |
| -Secoiridoids (Oleuropein), and -Simple Phenols (Hydroxytyrosol) | Antioxidant effect | (16) |
| -Secoiridoids (Oleuropein, ligstroside, secologanoside) -Simple Phenols (hydroxytyrosol glucoside), -Flavones (luteolin glycosides), and -Phenolic acids (Verbascoside) | Antioxidant effects and cytoprotection in kidney cells | (214) |
| -Secoiridoids (Oleuropein), -Phenolic acids (Verbascoside), and -Flavones (Luteolin-4-O-glucoside, Luteolin-7-glucoside) | Antifungal effect | (215) |
| -Secoiridoids (Oleoside, Oleuropein, Oleuropein diglucoside, Oleuropein, aglycone), -Flavones (Apigenin, Luteolin 7-O-glucoside, Chrysoeriol-7-O-glucoside), -Flavonols (Rutin), -Phenolic acids (Verbascoside), -Simple phenols (Hydroxytyrosol), and other compounds (Elenolic acid glucoside) | Antioxidant and anti-asthmatic impacts | (4) |
| -Secoiridoids (Oleuropein) | Anticancer impact | (216) |
| -Secoiridoids (Oleuropein), -Simple Phenols (Tyrosol), -Phenolic acids (Vanillic acid, gallic acid), and -Flavanols (Catechin) | Antibacterial and anti-inflammatory impacts | (217) |