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. 2020 Dec 15;36(1):258–270. doi: 10.1080/14756366.2020.1862099

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© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — In vitro antioxidant activity of Plectranthus spp. organic extracts at 100 g/mL measured as percentage of DPPH radical scavenging activity. The results are presented as means percentage values, considering the absorbance of quercetin as the positive control. Data are expressed as the mean ± SD (n = 3) **p < 0.005 ***p < 0.0001 vs negative control (DPPH in ethanol). DPPH: 2,2-diphenyl-1-picrylhydrazyl; ns: not significant; SD: Standard Desviation. Values were determined by one-way ANOVA followed by Tukey HSD comparison test.