Abstract
Color, whiteness and glossiness of four caesalpiniaceae wood species were characterized by quantitative measurements and image analysis, i.e., which were respectively Berlinia bracteosa Benth., Monopetalanthus heitzii Pellegr., Distemonanthus benthamianus and Erythrophleum ivorense A. Chev. The color of four wood species was evaluated to be consistent by the CIELab and CIE1931 color system. The boards of B. bracteosa, M. heitzii and E. ivorense was divided into dark color. The wood color of B. bracteosa had the highest red to green hue, while the wood appearance of D. benthamianus had the brightest and yellowest color within the four wood species. The whiteness of D. benthamianus was significantly higher than the other three wood species, namely tangential section 21.9% and radial section 22.2%. Hence, the color of the four species varied significantly, which was closely related to internal constituents of wood materials. M. heitzii wood had the highest surface glossiness on both tangential and radial section surfaces. The surface glossiness was highly related to the wood microstructure, especially with the pore and groove structure. This study of the visible characteristics provided the indicated knowledge for the application of the four wood species in wood industry.
Highlights
The visible characteristics of wood, such as color, which differ widely among species [1], are of quite importance in the commercialization process of wood production
2.1 Materials In this study, wood samples were taken from B. bracteosa, M. heitzii, D. benthamianus and E. ivorense, which were harvested in the tree farm of Yihua Lifestyle Technology Co., Ltd., in Gabon
Wood color, whiteness and glossiness of four caesalpiniaceae wood species were investigated. These results showed that the lightness L* of D. benthamianus was 67.24 on the tangential section surface and 67.11 on the radial section surface, and its yellow to blue hue, b*, was 33.82 on the tangential section surface and 32.95 on the radial section surface
Summary
The visible characteristics of wood, such as color, which differ widely among species [1], are of quite importance in the commercialization process of wood production. The visible characteristics of wood are the ones of the physical quantity of the wood surface, and the important indicators for evaluating the quality of wood bulk and determining the value of wood products [2]. The visible characteristics are one of the quality attributes that influence the customer’s perception of wood products. The visible characteristics of wood can be influenced by multiple factors. Reinprecht et al [3] found significant effects of natural and artificial weathering on the color of seven tropical wood species. They could be affected by other factors such as drying [4], natural light irradiation [5], soil condition [6], and genetic
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