Preliminary communication

Properties of blue-stained wood

Miha Humar orcid.org/0000-0001-9963-5011 ; Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Viljem Vek ; Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Bojan Bučar ; Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia

Abstract

Discoloration of wood is frequently caused by blue-stain fungi. Among them Aureobasidium pullulans and Sclerophoma pithyophila are reported as the most important staining organism. In previous researches, it was generally considered that blue-stain fungi do not influence mechanical properties. However, there were some
opposite results published as well. In order to elucidate this issue, specimens made of Scots pine (Pinus sylvestris) sapwood were exposed to two blue stain fungi A. pullulans and S. pithyophila for periods between two and eight weeks. FTIR, weight, colour and non-destructive modulus of elasticity measurements were performed before and after exposure. The results showed that blue stain fungi, besides considerable discoloration, do not cause any significant
damage to wood. Surprisingly the non-destructive MoE analysis showed that modulus of elasticity even slightly increase
after fungal exposure.

Keywords

Aureobasidium pullulans; colour; FTIR; modulus of elasticity; Pinus sylvestris; sap-stain; Sclerophoma pithyophila

Hrčak ID:

25409

URI

https://hrcak.srce.hr/25409

Publication date:

18.7.2008.

Article data in other languages: croatian

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