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. 2015 Feb 17;2:792–805. doi: 10.1016/j.toxrep.2015.02.007

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© 2015 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 7 — Principal component analysis results on F1XF2 axis of antioxidant and scavenging activities of the extracts tested. In the same concentration the values affected with different letters (a–f) are significantly different at p < 0.05. Values are expressed as mean ± SD of three replicates. FTE: P. guineense (stem) ethanolic extract; FTH: P. guineense (stem) hydroethanolic extract; FFE: P. guineense (leaves) ethanolic extract; FFH: P. guineense (leaves) hydroethanolic extract; MOLYBDAT: phosphomolybdenum test; Flavonol: flavonol assay; Polyphenol: polyphenol assay; Flavonoid: flavonoid assay; NO: NO radical scavenging test; ABTS: ABTS radical scavenging test; DPPH: DPPH radical scavenging test; OH: OH radical scavenging test; RED ACT: reductive activity test.