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A novel, micro, rapid and direct procedure to measure the total antioxidant capacity of solid foods using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) (mR-QUENCHER-DPPH) was developed and validated. The mR-QUENCHER-DPPH assay was performed in semi-aqueous medium (methanol–Tris buffer) using very small sample amounts (below 3.6µg), as estimated by a Bradford reagent-based chemical predictor, and it was completed...
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