Chemistry
M. Szabo, C. Idiţoiu, D. Chambre, A. Lupea
2007.6.1CHEMICAL PAPERS
tlooto Summary
An improved procedure for DPPH determination was proposed to accurately assess antioxidant activity spectrophotometric assay.
Abstract
An improved procedure for determination of the residual DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical concentration was proposed taking into account the absorbance of both DPPH free radicals and DPPH nonradical (1,1-diphenyl-2-picrylhydrazine) stable form. The calculated residual DPPH free radical concentrations were compared with those obtained from a calibration curve and variation coefficients below 10 % were found.
Citation format
SZABO, M., et al. Improved DPPH determination for antioxidant activity spectrophotometric assay. CHEMICAL PAPERS, 2007, 61: 214–216.