CAT activity was higher in rats with MetS receiving polyphenolic extract than in animals only with MetS, but only subjects in the MetS+100 group had a borderline value of statistical significance (3.62 ± 0.93 kU/mg vs. 2.79 ± 0.61 kU/mg, p = 0.051 for MetS+100 group and 3.31 ± 0.86 kU/mg vs. 2.79 ± 0.61 kU/mg, p = 0.421 for MetS+200 group, Figure 4). Here, CAT is linked to metabolic syndrome.