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Erschienen in: Wood Science and Technology 4/2020

25.05.2020 | Original

Assessing the natural durability of xylarium specimens: mini-block testing and chemical fingerprinting for small-sized samples

verfasst von: V. Deklerck, L. De Ligne, E. Espinoza, H. Beeckman, J. Van den Bulcke, J. Van Acker

Erschienen in: Wood Science and Technology | Ausgabe 4/2020

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Abstract

The resistance of wood against fungal decay, in short the natural durability, is one of the main criteria for defining the potential use of a wood species. Wood collections, or xylaria, offer the unique opportunity to screen many specimens and species for the latter purpose yet sample size is often limited and standardized tests are often not possible neither desired given the historical and cultural value of these specimens. Two different methods to determine the natural durability are tested and presented here, more specifically the mini-block test and chemical fingerprinting by Direct Analysis in Real-Time Time-Of-Flight Mass Spectrometry (DART TOFMS). Fungal decay by Trametes versicolor was determined for 577 mini-blocks collected from xylarium specimens and 602 mini-blocks from commercial species, not belonging to the xylarium collection, were included as a benchmark. Mass loss percentages of the different species are similar to reported values, supporting the use of the mini-block test when standardized testing is hardly feasible. Furthermore, as expected there is also a significantly negative relationship between density and the mass loss percentages from the mini-block test (r-Spearman = − 0.65***). Finally, partial least square-based prediction of recorded mass loss by using the DART TOFMS chemical fingerprints is promising (R2-adjusted = 0.40***), yet the accuracy differs between species.

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Metadaten
Titel
Assessing the natural durability of xylarium specimens: mini-block testing and chemical fingerprinting for small-sized samples
verfasst von
V. Deklerck
L. De Ligne
E. Espinoza
H. Beeckman
J. Van den Bulcke
J. Van Acker
Publikationsdatum
25.05.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Wood Science and Technology / Ausgabe 4/2020
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI
https://doi.org/10.1007/s00226-020-01186-1

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