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. 2010 Oct 28;5(10):e13713. doi: 10.1371/journal.pone.0013713

Table 1. Radical scavenging activities of stilbenoids 1–5 on DDPH and OH radicals.

IC50 (µM)
Compounds DPPH OH
Imbricatin (1) 8.37±0.61 0.034±0.011
Methoxycoelonin (2) 9.01±0.93 0.035±0.008
Gigantol (3) 14.01±1.69 0.157±0.039
Flavidin (4) 6.61±1.07 0.076±0.014
Coelonin (5) 8.47±1.58 0.079±0.018
Quercetin 2.42±0.65 0.045±0.012

Results are expressed as IC50 (mean ± sd) of stilbenoids 15 determined on DPPH and OH radical scavenging. IC50 concentration causing half-maximal neutralization of radical DPPH or OH. Quercetin was used as a standard reference.