Effect of Debarking Water from Norway Spruce (Picea abies) on the Growth of Five Species of Wood-Decaying Fungi

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.

Hedenström, ErikMittuniversitetet,Avdelningen för kemiteknik(Swepub:miun)erihed (author)
Edman, MattiasMittuniversitetet,Avdelningen för naturvetenskap,Biologi(Swepub:miun)matedm (author)
Jonsson, Bengt GunnarMittuniversitetet,Avdelningen för naturvetenskap(Swepub:miun)benjon (author)
MittuniversitetetAvdelningen för kemiteknik (creator_code:org_t)

In:Zeitschrift für Naturforschung C - A Journal of Biosciences9-10:69c, s. 418-4240939-50751865-7125

By the author/editor: Fagerlund-Edfeld ...; Hedenström, Erik; Edman, Mattias; Jonsson, Bengt G ...

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