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Principal component analysis plots for antioxidant activity and chemical composition of (a,b) root extracts and (c,d) leaflet extracts of Oenocarpus bacaba and Oenocarpus bataua. C: Comou (Oenocarpus bacaba), P: patawa (Oenocarpus bataua); R: roots; L: leaflets; W: water; A: acetone/water: 70/30; M: methanol/water: 70/30.
