u00b0 c and 90 u00b0 c preferably between 30 u00b0 c and 60 u00b0 c and at a ph between 3 and 9 preferably between 3 5 and 6 5 for a time period between 10 minutes and 24 hours preferably between 30 minutes and 6 hours the concentration of laccase is comprised between 0 1 1000 u l of process liquid preferably with the immobilised enzyme on a suitable support and the concentration of mediator is comprised between 0 1 10 g l preferably between 1 3 g l and achieves an elimination of the sterols sterol esters sterol glucosides resin acids triglycerides and other lipophilic extractives of up to 100 other preferred conditions are those mentioned above in the section of summary of the invention the percentage of enzymatic elimination of lipophilic compounds is determined by gas chromatography of the extracts of the treated pulp and the treatment liquids this process includes the following stages i the pulp treated with enzyme mediator and an untreated sample as a control is filtered dried and extracted with acetone in a soxhlet for 8 hrs ii the filtration liquids are extracted in a separating funnel with methyl tert butyl ether iii all the extracts are evaporated to dryness and are re dissolved in chloroform for the analysis of the lipophilic fraction by gas chromatography and gas chromatography mass spectrometry after derivatization with bis trimethylsilyl trifluoroacetamide bstfa when necessary the present invention is additionally illustrated by means of the following examples which are not intended to be limitative to its scope treatment of eucalyptus kraft pulp with laccase from pycnoporus cinnabarinus and hbt 1 hydroxybenzotriazole to check the effectiveness of the treatment of the.