Vis spectroscopy and CIELAB parameters of six wood species of the Fabaceae family marketed in the Brazilian Amazon

The aim of this study was to evaluate the potential of colorimetry to characterize six species (Hymenolobium petraeum, Dipteryx odorata, Ormosia sp., Enterolobium maximum, Hymenaea courbaril e Pseudopiptadenia suaveolens) of the Fabaceae family. Wood samples were collected in extractivist communities in Para state, Brazil. Colour data were obtained randomly on the three anatomical sections, along with reflectance spectra in the range of 360-740 nm. All analyses were carried out with RStudio. In general, reflectance spectra were similar for all species. However, for the Principal Component Analysis results, P. suaveolens stood out. The colorimetric parameters L*, b* and C*, in radial sections, are more important on colour results of the majority of wood samples. Colorimetry spectroscopy showed potential for characterizing some Fabaceae species. Therefore, the technique can serve as a support tool for better identification of this group, contributing to the reduction of ecological and socio-economic damage.