antioxidant Antioxidants 127 chemistry 73 plant extract 66 antioxidant activity 62 controlled study 62 nonhuman 60 Animals 59 human 57 Article 56 animal 56 male 52 Plant Extracts 51 unclassified drug 50 metabolism 48 Humans 43 Male 41 oxidative stress 34 plant leaf 34 rat 33 drug effect 31 animal experiment 30 animal tissue 27 Rats 26 phenol derivative 24 Plant Leaves 23 animal model 23 Antioxidant 21 Oxidative Stress 21 Rats, Sprague-Dawley 20