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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Schwanninger, Manfred / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

8 Issues per year


IMPACT FACTOR 2013: 2.339
Rank 8 out of 64 in category Forestry and 2 out of 21 in category Materials Science, Paper & Wood in the 2013 Thomson Reuters Journal Citation Report/Science Edition

SCImago Journal Rank (SJR): 0.880
Source Normalized Impact per Paper (SNIP): 1.136

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Near infrared spectroscopy (NIRS) as a potential tool for monitoring trade of similar woods: Discrimination of true mahogany, cedar, andiroba, and curupixá

1 / Jez Willian Batista Braga2 / Vera Terezinha Rauber Coradin1 / Washington Luiz Esteves Magalhães3 / Esmeralda Yoshico Arakaki Okino1 / José Arlete Alves Camargos1 / Graciela Inês Bonzon de Muñiz4 / Otávio Augusto Bressan4 / Fabrice Davrieux5

1Forest Products Laboratory, Brazilian Forest Service, Brasilia, Brazil

2Chemistry Institute, University of Brasilia, Brasília, Brazil

3Embrapa Florestas, Colombo, Brazil

4Department of Forest Sciences, Federal University of Parana, Curitiba, Brazil

5French Agricultural Research Center for International Development, CIRAD-UMR Qualisud, Montpellier, France

Corresponding author. Laboratório de Produtos Florestais, Serviço Florestal Brasileiro, SCEN trecho 2, Bloco D, 70818900, Brasilia, DF, Brazil

Citation Information: . Volume 65, Issue 1, Pages 73–80, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: 10.1515/hf.2011.010, November 2010

Publication History

Received:
2010-03-30
Accepted:
2010-09-02
Published Online:
2010-11-01

Abstract

Mahogany is one of the most valuable woods and was widely used until it was included in Appendix II of the Convention on International Trade in Endangered Species as endangered species. Mahogany wood sometimes is traded under different names. Also, some similar woods belonging to the Meliaceae family are traded as “mahogany” or as being of a “mahogany pattern”. To investigate the feasibility of the use of near infrared spectroscopy for wood discrimination, the mahogany (Swietenia macrophylla King.), andiroba or crabwood (Carapa guianensis Aubl.), cedar (Cedrela odorata L.), and curupixá (Micropholis melinoniana Pierre) woods were examined. Four discrimination models based on partial least squares-discriminant analysis were developed based on a calibration set composed of 88 samples and a test set with 44 samples. Each model corresponds to the discrimination of a wood species from the others. Optimization of the model was performed by means of the OPUS® software followed by statistical analysis software (Matlab®). The observed root mean square errors of predictions were 0.14, 0.09, 0.12, and 0.06 for discriminations of mahogany, cedar, andiroba, and curupixá, respectively. The separations of the species obtained based on the difference in the predicted values was at least 0.38. This makes it possible to perform safe discriminations with a very low probability of misclassifying a sample. This method can be considered accurate and fast.

Keywords: andiroba (Carapa guianensis); cedar (Cedrela odorata); curupixá (Micropholis melinoniana); discrimination of woods; near infrared (NIR) spectroscopy; tropical woods; true mahogany (Swietenia macrophylla)

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