Fig. 1.

Effect of lycopene on the copper ion-induced low density lipoprotein oxidation in broiler chickens. Low-density lipoprotein (LDL) isolated from 2 (a) or 4 (b) week-old chickens were subjected to ex vivo oxidation in the presence of copper ions and the concentration of thiobarbituric acid-reactive substances (TBARS) formed were measured as the absorbance difference between 530 and 600 nm at the indicated time points, and expressed as nM of malondialdehyde equivalents (MDA) per mg LDL protein using freshly diluted 1,1,3,3-tetraethoxypropane for the standard curve. Values are mean TBARS values from 4 replicates ± SE. The dagger (†) denotes p < 0.05 LP10 versus CONT; the section mark (§) denotes p < 0.05, LP20 versus CONT; the number sign (#) denotes p < 0.05, TP17 versus CONT