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Scavenging effect of glutathione reduced (GSH) and ascorbic acid (vit. C) on DPPH free radical. Each value expressed as a mean ± SD (n = 3). Conditions: 500 µL of 0.7 mM DPPH in methanol was mixed with 500 µL 0.7 mM GSH, or 500 µL 0.7 mM ascorbic acid dissolved in 80% (v/v) MeOH/water.
