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Antioxidant properties of TPP-conjugated peptides. (A) ABTS radical-scavenging activity in solution. (B) Square-wave voltammograms of peptides adsorbed and oxidized on graphene oxide-modified electrode. (C) Mean values of oxidation potential (Eox) and oxidation current (i) of electrochemically detected peptides. Mean ± SEM (n = 3, ∗∗p < 0.01, ∗∗∗p < 0.001 vs. Ctrl) are shown for A.
