antioxidant 198 Antioxidants 184 antioxidant activity 118 nonhuman 92 controlled study 89 chemistry 81 plant extract 81 Article 78 human 73 male 72 unclassified drug 72 Antioxidant 71 Animals 69 animal 64 oxidative stress 62 Plant Extracts 58 metabolism 53 Male 50 Humans 49 rat 48 animal experiment 46 plant leaf 42 drug effect 40 animal tissue 37 animal model 36 Rats 34 Antioxidant activity 30 article 28 female 28 superoxide dismutase 28