Patent ID: 6242245
Filing Date: 2001-06-05
Classification: C12N,C12P,C12R,D21C

Abstract:
A process for the delignification of lignin-containing material comprising the steps ofproviding an aqueous suspension of lignin-containing material,adding to the suspension an oxidoreductase, comprising laccase, at least one oxidant for the oxidoreductase, at least one mediator and at least one enzymatically active additive comprising xylanase;mixing said xylanase simultaneously with the aqueous suspension of the lignin-containing material; andpreventing the mediator from inactivating the oxidoreductase and the enzyme additive xylanase; andwherein the mediator is selected from the group consisting of violuric acid (Vio), N--OH-acetanilide (NHA), --OH-phthalimide (HPI), disodium 1-nitroso-2-naphthol-3,6-disulfonate hydrate (1-NNS), and 2-nitroso-1-naphthol-4-sulfonic acid tetrahydrate (2-NNS).