Research Article

Protective Effect of Pitao (Pitavia punctata (R. & P.) Molina) Polyphenols against the Red Blood Cells Lipoperoxidation and the In Vitro LDL Oxidation

Figure 5

Effect of the MeOH extract of P. punctata on LDL oxidation. (a) Absorbance at 234 nm was measured every 2 min for 360 min at 37°C in a spectrophotometer to obtain a typical conjugated diene-formation (CD) curve. From the CD-formation curve, the lag time defined as end of the cross point of the time axis and the curve slope was estimated. (b) Conjugated dienes production at the final process of LDL oxidation. with respect to 10 μg/mL (MeOH extract); with respect to Cu2+; with respect to Asc. Ac. 0.5 μM and 10 μg/mL (MeOH extract).
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