AI Article Synopsis
- Norway spruce debarking water is a waste product from paper mills that contains natural compounds with potential biological activities, including fungicidal effects.
- An experiment tested five wood-decaying fungi and found that all species showed reduced growth when exposed to high concentrations of freeze-dried and ethanol-extracted debarking water.
- The study suggests that antifungal agents derived from debarking water could provide a valuable use for this low-value industrial waste, as some fungi, especially G. sepiarium and O. lateritius, were significantly inhibited by the extracts.
Article 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.
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| http://dx.doi.org/10.5560/znc.2014-0072 | DOI Listing |
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