Total Antioxidant Capacity (TAC)
TAC level of the samples was measured using Rel Assay brand commercial
kits. The measurement method was applied on the basis that all
antioxidant molecules in the sample reduce the colored ABTS cationic
radical and decolorize the colored radical in proportion to the total
concentrations of the antioxidant molecules. Trolox, a water-soluble
analog of vitamin E, was used as the calibrator. Results were expressed
in mmol Trolox Equivalent / L 18. Micromolar (μmol)
changed when calculating trolox equivalent per liter.