title: Effect of debarking water from Norway spruce (Picea abies) on the growth of five species of wood-decaying fungi.
abstract: Norway spruce (Picea abies) debarking water is an aqueous extract obtained as waste from the debarking of logs at paper mills. The debarking water contains a mixture of natural compounds that can exhibit diverse biological activities, potentially including fungicidal activity on some species of wood-decaying fungi. Thus, we investigated the growth rates of such fungi on agar plates to which debarking water extracts had been added. The experiment included five wood-decaying fungi, viz. Gloeophyllum sepiarium, Oligoporus lateritius, Ischnoderma benzoinum, Junghuhnia luteoalba, and Phlebia sp. Growth reduction was observed for all species at the highest tested concentrations of freeze-dried and ethanol-extracted debarking water, the ethyl acetate-soluble fraction and the diethyl ether-soluble fraction. However, the magnitude of the effect varied between different species and strains of individual species. The brown-rot fungi G. sepiarium and O. lateritius were generally the most sensitive species, with the growth of all tested strains being completely inhibited by the ethyl acetate-soluble fraction. These results indicate that development of antifungal wood-protecting agents from debarking water could potentially be a way to make use of a low-value industrial waste.
authors.forename: Amelie Fagerlund
authors.initials: AF
authors.lastname: Edfeldt
authors.forename: Erik
authors.initials: E
authors.lastname: Hedenström
authors.forename: Mattias
authors.initials: M
authors.lastname: Edman
authors.forename: Bengt Gunnar
authors.initials: BG
authors.lastname: Jonsson
mesh_terms: D001487:Basidiomycota / Q000254:growth & development*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D028222:Picea / Q000737:chemistry*; D010935:Plant Diseases; D012997:Solvents / Q000737:chemistry; D013045:Species Specificity; D014197:Trees / Q000737:chemistry; D062065:Wastewater; D014867:Water / Q000737:chemistry*; D014934:Wood / Q000382:microbiology*
chemical_list: D012997:Solvents; D062065:Wastewater; D014867:Water