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. 2018 Mar 29;12:657–671. doi: 10.2147/DDDT.S155115

Figure 2.

Figure 2

FeSO4 standard curve plotted against concentration versus mean OD of the samples; standard equation: y =0.0009x +0.0133; R2=0.9976.

Abbreviations: Conc, concentration; FRAP, ferric reducing antioxidant power; OD, optical density.