A rapid screening assay for antioxidant potential of natural and synthetic agents in vitro

Characterization of Proanthocyanidins from Parkia biglobosa (Jacq.) G. Don. (Fabaceae) by Flow Injection Analysis — Electrospray Ionization Ion Trap Tandem Mass Spectrometry and Liquid Chromatography/Electrospray Ionization Mass Spectrometry

“…The remarkable antioxidant activities exhibited by all the P. biglobosa extracts and fractions tested could be associated with the presence of (epi)catechin derivatives, particularly (epi)gallocatechin-Ogallate [47] and condensed tannins, well known as being very powerful antioxidants [25]. Other polyphenols, such as flavonoids and phenolic acids, are strong antioxidants too.…”

Antioxidant and Chemosensitizing Effects of Flavonoids with Hydroxy and/or Methoxy Groups and Structure-Activity Relationship

“…A temporary decrease in the antioxidant concentration at a susceptible location, results in the accumulation of oxidative damage, which cannot be prevented or repaired by the late addition of the antioxidants (5). The chemopreventive effects of flavonoids are believed to result from their ability to scavenge ROS whereas the pro-oxidant effect of flavonoids has been shown to be responsible for their anticancer and apoptosis-inducing effects (6)(7)(8). Accordingly, exogenous antioxidants have been used for long time.…”

Synthesis, Electrochemical Properties and Antioxidant Activity of Hydroxy Substituted Tetraphenylporphyrins

“…[7][8][9] Методы определения антиоксидантной активно-сти веществ можно разделить по способу регистрации активности потенциальных антиоксидантов на: фотоме-трические, [10][11][12][13][14][15] хемилюминесцентные, [16] волюмометри-ческие, [17] флуоресцентные, [18][19][20] электрохимические [21][22] и др. ; [23,24] по типу источника окисления и окисляемого соединения. [25,26] Наиболее распространенным является спектрофотометрический метод, вероятно, как самый удобный и доступный.…”