RESUMO A cor como método empírico de identificação é subjetiva, no entanto pode-se utilizar o método de mensuração quantitativa CIEL*a*b*. O presente trabalho tem por objetivo realizar a caracterização colorimétrica da madeira do cerne de trinta espécies tropicais. Para tanto foram medidos os parâmetros colorimétricos (L*, a*, b*, C e h*), mediante o emprego de um colorímetro, e realizada a determinação da massa específica aparente. Os resultados foram tratados em teste de Skott-Knott (95% de significância) com posterior análise multivariada de Cluster. A análise de clusters dividiu os materiais em cinco grupos, em que nos primeiros estiveram as madeiras mais escuras e pesadas (e.g. Dialium guianese e Caesalpinia echinata), enquanto nos últimos estiveram as madeiras mais claras e leves (Ochroma pyramidale, Simarouba amara e Schizolobium amazonicum). Palavras-chave: cor da madeira; qualidade da madeira; Clusters; propriedades físicas; CIEL*a*b. Colorimetry of wood from thirty tropical speciesABSTRACT The color is a subjective parameter for wood identification, however with the CIEL*a*b quantitative measurement it is possible to transform in an objective method. This study aims to characterize the color of heartwood from thirty tropical species. The colorimetric parameters (L*, a*, b *, C and h *) were measured using a colorimeter. In addition, the wood density was determined for all woods. The results were analyzed by the Scott-Knott test (95% significance level) and multivariate analysis by the clustering method. The Cluster analysis divided the woods in five groups. One of the groups contained dark and dense woods (e.g. Dialium guianese e Caesalpinia echinata), while other group attached light and less dense woods (Ochroma pyramidale, Simarouba amara e Schizolobium amazonicum ).
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