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Direct reactive oxygen species (ROS) scavenging activity of 3-hydroxyterphenyllin (3-HT) (A) and candidusin A (CDA) (B). The antioxidant potential of 3-HT and CDA was evaluated by using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. DPPH was dissolved in 99% ethanol. Concentrations of 3-HT or CDA between 1 and 100 µM were tested. The absorbance of the solution was measured at 517 nm. A summary of the data fit to Hill’s equation is shown (n = 3).
