TY - GEN
T1 - Removal and transformation of toxic resin acids by wood-inhabiting fungi
AU - Sierra-Alvarez, Reyes
AU - Claassen, Frank W.
AU - Dorado, Jose
AU - Van Beek, Teris A.
AU - Lenon, Gilles
AU - Wijnberg, Hans B.P.A.
PY - 2000
Y1 - 2000
N2 - Resin acids, major components in the lipophilic extractives of many coniferous pulpwood species, are known to display high acute toxicity against aquatic organisms and bacteria in wastewater treatment systems. In the present study we examined the ability of several white-rot fungal strains to degrade different resin acids. Results obtained in solid-state fermentation studies with Scots pine wood as well as in liquid culture experiments with resin model compounds show the high effectiveness of fungal treatment to reduce the content and/or the acute inhibitory effect (Microtox assay) displayed by toxic pitch constituents. Several (novel) metabolites of the fungal transformation of dehydroabietic acid were isolated and identified. These included polar intermediates, mainly hydroxylated-, dihydroxylated and hydroxyl-oxodehydroabietic acids.
AB - Resin acids, major components in the lipophilic extractives of many coniferous pulpwood species, are known to display high acute toxicity against aquatic organisms and bacteria in wastewater treatment systems. In the present study we examined the ability of several white-rot fungal strains to degrade different resin acids. Results obtained in solid-state fermentation studies with Scots pine wood as well as in liquid culture experiments with resin model compounds show the high effectiveness of fungal treatment to reduce the content and/or the acute inhibitory effect (Microtox assay) displayed by toxic pitch constituents. Several (novel) metabolites of the fungal transformation of dehydroabietic acid were isolated and identified. These included polar intermediates, mainly hydroxylated-, dihydroxylated and hydroxyl-oxodehydroabietic acids.
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M3 - Conference contribution
AN - SCOPUS:0142249965
SN - 0898529743
T3 - TAPPI Pulping/Process and Product Quality Conference
SP - 1241
EP - 1245
BT - TAPPI Pulping/Process and Product Quality Conference
T2 - Proceedings of the 2000 TAPPI Pulping/Process and Product Quality Process
Y2 - 5 November 2000 through 8 November 2000
ER -