Steaming effects on selected wood properties of Turkey oak by spectral analysis |
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Authors: | Luigi Todaro Luigi Zuccaro Mario Marra Bruno Basso Antonio Scopa |
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Affiliation: | 1. Department of Crop Systems, Forestry and Environmental Sciences, Basilicata University, V.le Ateneo Lucano 10, 85100, Potenza, Italy 2. CNR-Istituto per la Valorizzazione del Legno e delle Specie Arboree (IVALSA), Via Biasi 75, 38010, San Michele all’Adige, TN, Italy
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Abstract: | Turkey oak (Quercus cerris L.) is characterized by some technological and aesthetical factors limiting its market value from its great potential. In this study, the effect of direct and indirect steaming on reduction in equilibrium moisture content (EMC) and colour variations was evaluated using a hyperspectral radiometer. Steaming treatments were carried out at 80°C for 48?h, and 120°C for 18 and 24?h, showing a reduction in EMC in the order of 8.1, 28.5 and 13.5, respectively, as well as very significant lightness (L*) and hue (h°) modifications in comparison with untreated specimens. The spectral signature analysis confirmed that hydrothermal treatments modify wood sensibility to the light source in the entire spectrum range. The study supports the validity of hydrothermal treatments for improving technological and aesthetical properties of Turkey oak. |
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