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What is Improved DPPH Assay for Antioxidant Activity about?

This document describes an improved method for determining the concentration of residual DPPH (1,1-diphenyl-2-picrylhydrazyl) free radicals for antioxidant activity assays. The method accounts for the absorbance of both the DPPH free radical and its nonradical stable form. Equations are derived relating absorbance to concentrations of the radical and nonradical forms. The calculated residual DPPH concentrations using the new method are compared to those from a calibration curve, finding variation coefficien

Author

Taufik Hidayatulloh

Language

EN