Characterization of wood popularly known as “Louros” in the Brazilian amazon by visible spectroscopy and CIELAB parameters
Abstract
Aim of study: The objective of this work was to evaluate the potential of colorimetry to discriminate wood from the “louros” group, in particular to contribute to a database of Brazilian native species for future application in logging control actions.
Area of study: The wooden discs were collected in a Sustainable Forest Management Area (AMFS) belonging to two extractivist communities, Paraiso and Arimum, both in the “Green Forever” Extractivist Reserve, in the municipality of Porto de Moz, Pará state, Brazil.
Material and methods: Colorimetric evaluation was carried out based on data from the CIEL*a*b* system, analyzed using PCA and ANOVA in a completely randomized design in a two-factor scheme.
Main results: PCA produced some evidence of color patterns and some parameters may be more useful in caracterization. Longitudinal surfaces were more indicated for this group caracterization. The data from CIEL*a*b* system produce helpful information for distinction of wood from “louros” group, and so, the colorimetric technique can be an auxiliary tool for separation of this group, complementary to other techniques as wood anatomy.
Research highlights: Correct discrimination of wood from “louros” group in commerce control; Brazilian native species.
Keywords: Species distinction; Lauraceae; Proteaceae; color parameters.
Abbreviations used: Comission International de L’Eclairage: CIE, Sustainable Forest Management Area: AMFS, Ministry of the Environment: MMA, Chico Mendes Institute: ICMBio, Authorization and Biodiversity Information System: SISBIO, National System for Genetic Heritage Management: SisGen, Analysis of variance: ANOVA, Principal Component Analysis: PCA, Aniba sp.: PR, Euplassa sp.: LB, Roupala sp.: LV, Ocotea sp.: LR, Ocotea sp.: LPI, Mezilaurus sp.: IT, Mezilaurus sp.: ITA.
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