%V 39 %P 2505-2533 %J MEDICINAL RESEARCH REVIEWS %D 2019 %L publicatio17152 %R MTMT:30693049 10.1002/med.21592 %A Hunyadi Attila %I szte %T The mechanism(s) of action of antioxidants : from scavenging reactive oxygen/nitrogen species to redox signaling and the generation of bioactive secondary metabolites