Abstract: The invention relates to a method for the enzymatic production of a curing agent in its fluid state, e.g. liquid, comprising, in free phase, at least one oxygenated chemical species. Said method consists in bringing into contact at least one enzymatic catalysts agent, comprising at lease one peroxidase-type enzyme; an oxidizable substrate in aqueous phase that can be oxidized by the action of an oxygen donor, by catalysis by said enzymatic catalysis agent, generating said oxygenated chemical species in free phase; and said oxygen donor.