Radical Scavenging, Proteases Activities, and Phenolics Composition of Bark Extracts from 21 Medicinal Plants

Figure 2

HPLC analysis of standards; 1 = tannic acid, 2 = gallic acid, 3 = catechin, 4 = hesperidin, 5 = rutin, 6 = quercetin, and 7 = cinnamic acid.