ENZYMATIC PRETREATMENT OF WOOD IN A METHOD FOR PRODUCING MECHANICAL PAPER PULP

摘要

A method for producing mechanical paper pulp comprises: impregnating unprocessed wood, whereby unprocessed wood is exposed to an impregnating composition comprising at least a laccase enzyme and a formula mediator (I), wherein R1 and R2 are identical or different groups, chosen from among a hydrogen atom, a hydrocarbon chain, linear or branched, saturated or unsaturated, comprising 1 to 14 carbon atoms, wherein each hydrocarbon chain can be replaced by one or more functional groups chosen from among —OH, —SO3, benzyl, amino, mercapto, keto or carboxyl, wherein R1 and R2 in combination can form a cyclical structure, to achieve impregnation of the wood; and mechanically refining the impregnated wood, such that a mechanical paper pulp is obtained. The disclosure also relates to an impregnating composition used in this method and to the use thereof in a method for producing mechanical paper pulp, as well as to a method for producing paper.

主权项

1. A method for producing mechanical paper pulp, comprising:
impregnating an untreated wood, comprising contacting the untreated wood with an impregnating composition comprising at least one laccase enzyme and a mediator of formula (I): wherein R1 and R2 are identical or different groups selected from a hydrogen atom and a saturated or unsaturated, linear or branched hydrocarbon chain comprising from 1 to 14 carbon atoms, wherein each hydrocarbon chain is optionally substituted by one or more functional groups selected from —OH, SO3, benzyl, amino, mercapto, keto, and carboxyl, wherein R1 and R2 may together form a cyclic structure, to give an impregnated wood; and mechanically refining the impregnated wood to obtain a mechanical paper pulp.