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Potentiometric and UV-Vis spectrophotometric titrations for evaluation of the antioxidant capacity of chicoric acid.
RSC Adv
March 2020
Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University Changsha 410013 China.
The antioxidant capacity (AOC) of chicoric acid (ChA, the main antioxidant component of ) or an ethanol/water-extract of flowers was determined by potentiometric and UV-Vis absorption spectrophotometric titrations with ABTS˙ radical cations as the oxidizing probe. The potentiometric and spectrophotometric titration results agreed well with each other. The trolox-equivalent antioxidant capacity (TEAC) of ChA was found to be 5.
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