Figure 5: TBARS (a) and protein carbonyl PC (b) content as determined by enzymatic assays methods versus the ROS production rate (μmol · min−1) calculated by EPR data (solid symbols). The linear regression lines (solid lines) are reported. The variance analysis (Pearson product-moment correlation) indicated a positive association for both TBARS and PC ( values = 0.74 and 0.60, P < 0.05, resp.).