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Scavenging potential of the different plant extracts: (A) DPPH•, (B) OH•, (C) NO• and (D) ABTS•. Values are expressed as mean ± SD of three replicates. In the same concentration the values affected with different letters (a–f) are significantly different at p < 0.05. FTE: P. guineense (stem) ethanolic extract; FTH: P. guineense (stem) hydroethanolic extract; FFE: P. guineense (leaves) ethanolic extract; FFH: P. guineense (leaves) hydroethanolic extract; VIT C: vitamin C.
