Applying ligninolytic fungi on Eucalyptus grandis wood for pulping pretreatment or fractionation

INALBÓN M.C.; MOCCHIUTTI P.; ZANUTTINI M.A.; BALATTI P.A.; RAJCHENBERG M.; SAPARRAT M.N.

Procedia Materials Science

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Año: 2015 vol. 8 p. 1099 - 1107

2211-8128

The effects of three different fungal treatments on several technology characteristics of Eucalyptus grandis wood, including industrial chips and blocks, were studied. The percentage of the substrate mass loss by the fungal treatment, and the relative amount of extractives and lignin were determined. The effective capillarity of wood, pH and total reducing sugars concentration in water-soluble fraction (WSF) were also determined. There was a reduced mass loss of the substrate by the fungal treatment (less than 3%). Gelatoporia subvermispora FBCC 313 showed the higher reduction in the Klason lignin content, the higher endoglucanase activity on the WSF as well as the higher ability to increase the effectively capillarity in the radial wood direction. This last effect is interesting since it might improve the wood impregnation processes and therefore to reduce the consumption of reagents in industrial treatments.