Improved DPPH Determination for Antioxidant Activity Spectrophotometric Assay
Material type:
TextSeries: ; Chemical Papers, 61(3), p.214-216, 2007Contained works: - Szabo, M
- Iditoiu, C
- Chambre, D
- Lupea, A
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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 percent were found.
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