Catalase (CAT, EC 1.11.1.6) activity was evaluated by
monitoring the decrease in absorbance at 240 nm due to
H2
O2
decomposition (Aebi 1984). The mixture (1 mL) contained
50 mmol L–1 potassium phosphate buffer (pH 7.0),
10 mmol L–1 H2
O2
, and 20 µL of enzyme extract. The reaction
was initiated by adding H2
O2
.
.