Potential of near infrared spectroscopy to assess hot-water-soluble extractive content and decay resistance of a tropical hardwood

Abstract

The ability to identify both low-and high-durability samples in a population of naturally durable samples would allow more rational use of these materials, for example, using samples in the lower ranges of durability in non-soil contact. One possible method for rapidly assessing differences in heartwood characteristics related to durability is near infrared spectroscopy (NIR) coupled with multivariate statistical methods. A number of recent studies suggest that NIR can be related to a variety of wood properties, including extractive content. There are, however, few data on the ability of this technique to assess decay resistance, especially in hardwoods or species with high natural durability. In this report, the ability of NIR to predict both extractive content and resistance to fungal attack in Goncalo alves (Astronium graveolens) was assessed. NIR spectra accurately predicted hot-water-soluble extractive content of A. graveolens and its susceptibility to the white rot fungus Trametes versicolor. A. graveolens was very resistant to attack by the brown rot fungus Gloeophyllum trabeum and NIR spectra were not useful predictors of weight loss. NIR spectroscopy may be a useful tool for rapidly assessing the extractive content and decay resistance of naturally durable wood.

Chemical and Calorific Characterisation of Longleaf Pine Using near Infrared Spectroscopy

“…physical properties and chemical composition play an integral role in the performance of wood in service, so models have been developed to predict mass losses and/or changes in composition as a result of thermal treatment 8 or exposure to wood decay fungi. [9][10][11] recently, increasing interest in biofuels raises questions about the utility of nIr spectroscopy for rapidly assessing feedstock qualities, in particular, fuel value. the higher heating value (HHV) or gross calorific value (GcV) of a fuel is defined as the amount of heat released by a specified quantity (initially at 25°c) once it is combusted and the products have returned to a temperature of 25°c, which takes Chemical and calorific characterisation of longleaf pine using near infrared spectroscopy into account the latent heat of vaporisation of water in the combustion products.…”

Wood Density Variations of Legume Trees in French Guiana along the Shade Tolerance Continuum: Heartwood Effects on Radial Patterns and Gradients

“…Given the agreement between the range of corrected inn WD and the estimation of corWD ctr observed in P. venosa, we hypothesize that the decrease in the HWD from the pith to the HW/SW boundary might be due to the decrease in total extractive content. Finally, SW also contains extra material such as nonstructural carbohydrates, gums, resins, silicate, or precursors of extractives [37,49,71,72] that may impact SWD. Although it is generally acknowledged that the concentration of extra materials is generally lower in SW than in HW [70], some species may have high extractive content in the SW [36,72].…”

Essential Oil Yield in Rosewood (Aniba Rosaeodora Ducke): Initial Application of Rapid Prediction by near Infrared Spectroscopy Based on Wood Spectra

“…Conventionally, NIR spectroscopy is sufficiently sensitive to detect differences in the chemical composition of trees growing at various locations 13 and to predict the extractive yield of different wood species. [14][15][16][17][18][19] NIR spectroscopy has been successfully demonstrated to be effective for various plant essential oils, including oils from basil (Ocimum sp. ), camomile (Chamomilla recutita L.), oregano (Origanum sp.…”