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    Pyrolysis gas-chromatography mass-spectrometry (Py-GC/MS) to identify compression wood in Pinus radiata saplings

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    10633.pdf (1010.Kb)
    Date
    2014
    Author
    Brennan M
    McLean JP
    Klingberg A
    Altaner C
    Harris PJ
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    Abstract
    The potential of pyrolysis followed by gaschromatography and mass-spectrometry (Py-GC/MS) was investigated for identifying compression wood (CW) in saplings of radiata pine (Pinus radiata) by examining samples of CW and opposite wood (OW). Phenolic compounds and anhydrosugars were identified among the pyrolysis products that provided information about the cell-wall polymers. Sample preparation, such as coarse-milling, fine-milling, and fine-milling followed by calcium-chloride treatment was also investigated. Fine-milling typically decreased the total yield of phenolic compounds compared with coarse-milling. Fine-milling followed by calcium-chloride washing significantly increased the proportions of pyrolysis products from polysaccharides, specifically from (1→4)-β-D-galactans that were of interest in distinguishing CW from OW. Six pyrolysis products were identified that were unique to the CW samples examined, including derivatives of (1→4)-β-D-galactans and H-units of lignin. Other pyrolysis products were identified that had significantly different proportions between the two wood types, and sometimes among samples of the same wood type.
    Journal Title/Title of Proceedings
    Holzforschung
    Rights
    Copyright © 2013, Walter de Gruyter GmbH
    Version
    Version of record
    Volume/Issue Number
    68:5
    Page Numbers
    505‐517
    URI
    http://dx.doi.org/10.1515/hf-2013-0110
    http://hdl.handle.net/11262/10633
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