Antioxidant capacities in plasma.

<p>Pigs (42 d of age) were fed either a methionine-deficient (MD) or a CTRL diet providing an adequate level of methionine for 10 days (n = 6 per diet). Values are least square means together with residual standard deviation (RSD). Differences between groups were significant at ***<i>P</i>≤0.001; **<i>P</i>≤0.01 and *<i>P</i>≤0.05. Activity level of total superoxide dismutase (SOD) was expressed in units per mL (U/mL). The antioxidant activities (mmol or μmol equivalent Trolox/L) were determined by 3-ethyl-benzothiazoline-6-sulfonic acid (ABTS), the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and the Ferric Reducing Ability of Plasma (FRAP) tests.