Reactions were halted by adding NaOH 5 N, and increase in A610 was
measured (ε610 ¼ 22 mM1 cm1). One unit of enzyme activity (U)
was defined as the amount of enzyme required to oxidize 1 mmol of
Phenol Red in 1 min. LiP activity (E.C:1.11.1.14) was measured by the
decrease in absorbance at 651 nm due to the oxidation of Azure B