Test

Catecholase (o-DPO)

Laccase (p-DPO)

Substrate specificity:

o-Dihydroxyphenols

oxidized

-

p-Dihydroxyphenols

nil or slow

oxidized

p-Cresol

oxidized

Guiacol

-

oxidized

1-Naphthol

-

oxidized

p-Phenylene-diamine

-

oxidized

Syringaldazine

-

oxidized

Inhibitor specificity:

Cinnamic acid, p-coumaric acid and ferulic acid

inhibition

nil

Polyvinylpyrrolidone (PVP)

inhibition

nil

Salicylhydroxamic acid (SHAM)

inhibition

nil

4-Hexyl-resorcinol

inhibition

nil

Quaternary ammonium compounds (QACs)

nil

inhibition