Assessment of total phenols and extractives of mahogany wood by near infrared spectroscopy (NIRS)
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Allan Ribeiro da Silva
,
Jez Willian Batista Braga
Abstract
The resistance to decomposition of mahogany wood (Sweitenia macrophylla King) ranges from high to moderate level. Wood extractives, mainly due to the presence of phenol compounds are related to the natural durability of wood. The technique of near infrared spectroscopy (NIRS) coupled with multivariate analysis has been applied to assess the extractives and phenols of 41 samples of mahogany in powder form. The hot water-soluble extractives were quantitatively determined, and total phenol content was measured with the Folin-Denis colourimetric reagent. Models were developed with the NIRS data for each of the two variables. The results indicated that NIRS can be a useful tool to a rapid evaluation of the extractive contents and total phenolic compounds of mahogany wood. The method was able to predict the interesting properties with errors lower than 10% (w/w) and had the capability of detecting samples that have a minimum concentration of 2.4% (w/w) of extractives and total phenolic compounds, respectively.
©2013 by Walter de Gruyter Berlin Boston
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- Meetings
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Articles in the same Issue
- Masthead
- Masthead
- Original Papers
- Assessment of total phenols and extractives of mahogany wood by near infrared spectroscopy (NIRS)
- Steam pretreatment for enzymatic hydrolysis of poplar wood: comparison of optimal conditions with and without SO2 impregnation
- Silica content of 36 Brazilian tropical wood species
- Dissolution and acetylation of ball-milled lignocellulosic biomass in ionic liquids at room temperature: application to nuclear magnetic resonance analysis of cell-wall components
- Effects of hydrothermal processing on the cellulosic fraction of Eucalyptus globulus wood
- Wood capillarity and deacetylation during eucalyptus alkaline impregnation. Sulphidity effects and comparison between transverse directions
- Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)
- Rational production of veneer by IR-heating of green wood during peeling: Modeling experiments
- Measurement of intra-ring wood density by means of imaging VIS/NIR spectroscopy (hyperspectral imaging)
- Coarse graining of wood cell arrangement and density dependence of elasticity
- Changes in viscoelastic vibrational properties between compression and normal wood: roles of microfibril angle and of lignin
- Elastic properties of cellular wood panels with hexagonal and auxetic cores
- Alternative experimental method to evaluate moment-carrying capacity of traditional wood-to-wood joint with small scale experiment
- Detection of iron-chelating and iron-reducing compounds in four brown rot fungi
- Synthesis and fungicidal activity of dehydroabietyl-1,2,4-triazolo-thiazolidinones
- Meetings
- Meetings
