... hydroxytyrosol, oleuropein, or 3,4-DHPEA-EA but it had a radical scavenging activity similar to ... much higher than that of α-tocopherol or oleuropein, but in an emulsion 3,4-DHPEA-EA and α-tocopherol ... much higher than that of α-tocopherol or oleuropein, but in an emulsion 3,4-DHPEA-EA and α-tocopherol ... much higher than that of α-tocopherol or oleuropein, but in an emulsion 3,4-DHPEA-EA and α-tocopherol ...