Rapid prediction of phenolic compounds as chemical markers for the natural durability of teak (Tectona grandis Linn f.) heartwood by near infrared spectroscopy

Niamké Bobelé Forence, Amusant Nadine, Kadio Adjumane Aimé, Thévenon Marie-France, Nourissier-Mountou Sophie, Adima Augustin Amissa, Jay-Allemand Christian, Chaix Gilles. 2014. Rapid prediction of phenolic compounds as chemical markers for the natural durability of teak (Tectona grandis Linn f.) heartwood by near infrared spectroscopy. Journal of Near Infrared Spectroscopy, 22 (1) : 35-43.

https://doi.org/10.1255/jnirs.1091

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Quartile : Q3, Sujet : CHEMISTRY, APPLIED / Quartile : Q3, Sujet : SPECTROSCOPY

Résumé : Near infrared (NIR) spectroscopy provides rapid and non-destructive analysis of wood properties and composition. In this study, we aimed to use NIR measurement for the prediction of teak phenolic compounds, which are chemical markers for natural durability of wood. Twenty-seven teak trees from two geographical zones (Malaysia and Ivory Coast) were used. On ground heartwood samples, the content of total phenolics and individual quinones (tectoquinone, 2-(hydroxymethyl)anthraquinone, 2- anthraquinone carboxylic acid, 1,4-naphthoquinone and 4?,5?-dihydroxy-epiisocatalponol) were determined using high performance liquid chromatography (HPLC). Partial least squares (PLS) regression with NIR spectra on the same samples and phenolic data was used to build NIR models for phenolic contents. The PLS models for the total predicted phenolics and three quinone contents (tectoquinone, 2-(hydroxymethyl)anthraquinone, and 4?,5?- dihydroxy-epiisocatalponol) showed a good ratio of performance to deviation (RPD ? 2.5), strong coefficients of determination (r2 ? 0.8) and the prediction errors were consistent with the reference method. These results demonstrate that NIR spectroscopy can be reliable for the evaluation of total phenolics and individual quinones in teak heartwood wood meal. NIR spectroscopy is a promising technique for rapidly providing information on the quinone contents in teak wood and indirectly for knowing its natural durability. This finding leads to a precise, non-destructive tool for teak wood quality evaluation.

Mots-clés Agrovoc : Tectona grandis, bois de coeur, durabilité, technique de prévision, spectroscopie infrarouge, HPLC, quinone, composé phénolique

Mots-clés géographiques Agrovoc : Malaisie

Classification Agris : K50 - Technologie des produits forestiers
F60 - Physiologie et biochimie végétale
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

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