title: Fungal bio-treatment of spruce wood with Trametes versicolor for pitch control: influence on extractive contents, pulping process parameters, paper quality and effluent toxicity.
abstract: Lipophilic low molar-mass constituents in wood chips for the paper industry result in low quality pulp, pitch deposition, and effluent toxicity. New biotechnological solutions such as fungal pre-treatment of wood chips can reduce pitch problems. This laboratory-scale study focuses on the potential and limitations of a fungal bio-treatment of Norway spruce chips with the white-rot fungus Trametes versicolor. Different fungal treatment conditions were compared. A 4-week fungal treatment reduced the concentration of resin acids and triglycerides by 40% and 100%, respectively, but neither lowered the energy requirements of the TMP process nor significantly affected the morphological fiber characteristics and the physical pulp properties. The pre-treatment led to slightly poorer optical properties. The Trametes versicolor fungal treatment contributed to a less toxic effluent and improved the biodegradability. A treatment of 2-3 weeks appears optimal.
authors.affiliation: Laboratory of Organic Chemistry, Natural Products Chemistry Group, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands. teris.vanbeek@wur.nl
authors.forename: Teris A
authors.initials: TA
authors.lastname: van Beek
authors.forename: Bram
authors.initials: B
authors.lastname: Kuster
authors.forename: Frank W
authors.initials: FW
authors.lastname: Claassen
authors.forename: Taisto
authors.initials: T
authors.lastname: Tienvieri
authors.forename: Frédérique
authors.initials: F
authors.lastname: Bertaud
authors.forename: Gilles
authors.initials: G
authors.lastname: Lenon
authors.forename: Michel
authors.initials: M
authors.lastname: Petit-Conil
authors.forename: Reyes
authors.initials: R
authors.lastname: Sierra-Alvarez
mesh_terms: D001487:Basidiomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D007220:Industrial Waste / Q000032:analysis*; D010209:Paper / Q000592:standards*; D028222:Picea; D012116:Resins, Plant / Q000032:analysis / Q000378:metabolism*; D013997:Time Factors; D014934:Wood / Q000737:chemistry* / Q000378:metabolism
chemical_list: D007220:Industrial Waste; D012116:Resins, Plant; C013893:rosin