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- Title
Pyrolysis gas-chromatography mass-spectrometry (Py-GC/MS) to identify compression wood in Pinus radiata saplings.
- Authors
Brennan, Maree; McLean, J. Paul; Klingberg, Andreas; Altaner, Clemens; Harris, Philip J.
- Abstract
The potential of pyrolysis followed by gas-chromatography 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.
- Subjects
PYROLYSIS gas chromatography; MASS spectrometry; COMPRESSION wood; PINUS radiata; PHENOLS; INFORMATION theory
- Publication
Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood, 2014, Vol 68, Issue 5, p505
- ISSN
0018-3830
- Publication type
Article
- DOI
10.1515/hf-2013-0110