Figure 1 The chemical structure of caffeine.
Figure 2 The prooxidant effects of different concentration of caffeine (15–45 μg/mL) compared to antioxidant effect of standard antioxidant compounds, α-tocopherol and trolox at 45 μg/mL.
Figure 3 The prooxidant effects of caffeine depending on concentration (15–45 μg/mL).
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