Enzymatic activity of CAT (EC 1.11.1.6) was determined according
to the methodology proposed by Aebi (1984), as described by
Vázquez-Medina et al. (2006). The enzymatic activity is expressed
in units of CAT mg−1 protein. One unit of CAT is defined as the
amount of enzyme required to reduce 1 μmol of H2O2 per minute