BQC DMPD Antioxidant Capacity Assay Kit provides a simple and rapid method for evaluating total antioxidant capacity (TAC) in a wide range of samples, including beverages, food extracts and plant-based materials.
This TAC Assay Kit is based on the N,N-dimethyl-ρ-phenylenediamine (DMPD) method. In this method, the DMPD radical (DMPD•+) which is a purple colored (λmax = 533 nm) stable cation radical, is reduced by hydrogen-donating antioxidants to the colorless DMPD reduced form. Therefore, the absorbance decrease at 533 nm depends linearly on the antioxidant concentration. The synthetic antioxidant Trolox (included in the kit) is used to standardize the sample TAC relative to Trolox (Trolox Equivalents Antioxidant Capacity, TEAC).
