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Wood Research and Technology


Cellulose – Hemicelluloses – Lignin – Wood Extractives

Editor-in-Chief: Salmén, Lennart

Editorial Board: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

IMPACT FACTOR 2018: 2.579

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Volume 73, Issue 7


NIR hyperspectral imaging (NIR-HI) and μXRD for determination of the transition between juvenile and mature wood of Pinus sylvestris L.

Antonio RuanoORCID iD: https://orcid.org/0000-0002-9684-1458 / Andreas Zitek
  • Division of Analytical Chemistry – VIRIS Laboratory for Analytical Ecogeochemistry, Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Barbara Hinterstoisser
  • Institute of Wood Science and Technology, University of Natural Resources and Life Sciences, Vienna, Austria
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Eva HermosoORCID iD: https://orcid.org/0000-0002-0439-6319
Published Online: 2019-02-19 | DOI: https://doi.org/10.1515/hf-2018-0186


The ratio of juvenile wood (jW) to mature wood (mW) is relevant for structural wood applications because of their different properties. Near infrared-hyperspectral imaging (NIR-HI) indicates after calibration, the spatial distribution of jW and mW, and this approach is less time consuming than the established micro X-ray densitometry (μXRD). In the present study, a comparative detection of the jW and mW of Pinus sylvestris L. was performed by NIR-HI and μXRD and the NIR-HI results were evaluated in combination with three chemometric approaches, namely, the principal component analysis (PCA), partitional k-means unsupervised classification (p-k-mUC) and partial least squares discriminant analysis (PLS-DA) in the range of 900–1700 nm. The best NIR-HI results can be obtained when the transition point of earlywood (EW) and latewood (LW) are assessed separately by PLS-DA. The presented results are useful for an automating data evaluation and simplified data collection.

Keywords: juvenile wood; mature wood; NIR hyperspectral imaging; Pinus sylvestris


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About the article

Received: 2018-08-24

Accepted: 2018-12-19

Published Online: 2019-02-19

Published in Print: 2019-06-26

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

Research funding: This study has been carried out with the support of the Ministry of Economy and Competitivity of the Government of Spain through the Project RTA2014-00005-00-00, and the Training Program for Research Staff (FPI-INIA).

Employment or leadership: None declared.

Honorarium: None declared.

Citation Information: Holzforschung, Volume 73, Issue 7, Pages 621–627, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf-2018-0186.

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