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. 2014 Apr 4;3(2):212–228. doi: 10.3390/antiox3020212

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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(A) Variation of the absorbance of 2,2-diphenyl-1-picrylhydrazyl (DPPH) in the presence of different concentrations of RES at T = 25 °C (-Ο- 0.1483 mol RES/mol DPPH, -- 0.1854 mol RES/mol DPPH -- 0.2223 mol RES/mol DPPH, -- 0.2966 mol RES/mol DPPH, -- 0.3337 mol RES/mol DPPH); (B) variation of the absorbance of DPPH in the presence of different concentrations of CA at T = 25 °C (-●- 0.0371 mol RES/mol DPPH, -- 0.0742 mol RES/mol DPPH, -- 0.1113 mol RES/mol DPPH, -- 0.1484 mol RES/mol DPPH, -- 0.1855 mol RES/mol DPPH, -▲- 0.2226 mol RES/mol DPPH). (C,D) Determination of EC50 values of RES; (C) and CA; (D) towards DPPH free radicals.

Inline graphic — (A) Variation of the absorbance of 2,2-diphenyl-1-picrylhydrazyl (DPPH) in the presence of different concentrations of RES at T = 25 °C (-Ο- 0.1483 mol RES/mol DPPH, -- 0.1854 mol RES/mol DPPH -- 0.2223 mol RES/mol DPPH, -- 0.2966 mol RES/mol DPPH, -- 0.3337 mol RES/mol DPPH); (B) variation of the absorbance of DPPH in the presence of different concentrations of CA at T = 25 °C (-●- 0.0371 mol RES/mol DPPH, -- 0.0742 mol RES/mol DPPH, -- 0.1113 mol RES/mol DPPH, -- 0.1484 mol RES/mol DPPH, -- 0.1855 mol RES/mol DPPH, -▲- 0.2226 mol RES/mol DPPH). (C,D) Determination of EC50 values of RES; (C) and CA; (D) towards DPPH free radicals.