Antioxidant properties of Silene vulgaris (S.v.) and S. acaulis (S.a.) seed extracts. (A) DPPH radical-scavenging activity expressed as μg of ascorbate equivalents per mg of dry weight. (B) The total phenolics content, evaluated using the Folin–Ciocalteu reagent method, expressed as gallic acid equivalents per mg of dry weight. (C) Specific antioxidant activity is expressed as μg ascorbate equivalents per mg gallic acid equivalents. Values are expressed as means ± s.d. of three independent experiments. Statistical significanc: *P < 0·05; **P < 0·01; ***P < 0·001, compared with S. acaulis. DS, dry seeds. T0, rehydrated seeds.