Phenolic Compound Identification and Antioxidant Capacity of Alperujo Extracts from Region del Maule, Chile

This study was carried out to determinate phenolic, flavonoid content, and antioxidant capacity in methanolic extract from three Alperujo varieties. Alperujo Barnea showed the highest concentration of phenols and flavonoid. The greater hydroxytyrosol content was obtained in the same extract (4.93 +/- 0.37 mu g/mg extract), whereas the greater tyrosol content (0.23 +/- 0.012 mu g/mg extract) was found in Arbequina extract. These results were correlated with the greatest radical scavenging and the highest inhibition of lipoperoxidation process observed in Barnea extract (IC50 of 27.9 +/- 1.04 mu g/mL; IC50 22.8 +/- 3.5 mu g/mL, respectively). In spite of differences, alperujo extracts exhibited notable antioxidant capacities.