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Susceptibility of pre-treated wood sections of Norway spruce (Picea abies) clones to enzymatic hydrolysis
School of Forest Sciences, University of Eastern Finland, Joensuu, Finland.
School of Forest Sciences, University of Eastern Finland, Joensuu, Finland.
Department of Biotechnology and Chemical Technology, Aalto University, Aalto, Finland.
VTT Technical Research Centre of Finland, Espoo, Finland.
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2012 (English)In: Canadian Journal of Forest Research, ISSN 0045-5067, E-ISSN 1208-6037, Vol. 42, no 1, p. 38-46Article in journal (Refereed) Published
Abstract [en]

The structure of softwoods, which confers resistance to degradation through hydrolysis and decay, currently limits their use for the production of biofuels. However, since wood is very heterogeneous, it is possible that differences in wood properties within and between trees could differentially affect its processability. In this research, heartwood (inner) and sapwood (outer) from Norway spruce (Picea abies (L.) Karst.) clones were enzymatically hydrolyzed by Trichoderma viride cellulases after concentrated acid pretreatment. Wood sections with two particle sizes were compared based on their susceptibility to enzymatic hydrolysis, evaluated by assaying the formation of hydrolysis products and measured as reducing sugar yield (RSY). We also studied the relationship between RSY and the susceptibility to Heterobasidion parviporum wood decay and whether these traits are reflected in wood density and yield. Wood from the outer section produced more RSY with higher glucan but lower lignin content than wood from the inner section. Furthermore, susceptibility to enzymatic hydrolysis was positively correlated with H. parviporum wood decay, while both processes were negatively correlated with wood density. Our results revealed the importance of clonal trials for identifying suitable lignocellulosic biomass when considering wood properties and indicate that potential genotypes for the production of biofuels are not necessarily the most productive.

Place, publisher, year, edition, pages
NRC Research Press, 2012. Vol. 42, no 1, p. 38-46
National Category
Wood Science
Identifiers
URN: urn:nbn:se:oru:diva-72407DOI: 10.1139/x11-154ISI: 000299790800004Scopus ID: 2-s2.0-83755229524OAI: oai:DiVA.org:oru-72407DiVA, id: diva2:1288088
Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-20Bibliographically approved

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Morales, Luis Orlando

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CiteExportLink to record
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