WOOD PROPERTIES OF FOUR TROPICAL SPECIES FROM MINING AREAS IN AMAZON, BRAZIL PART 2: DENSITY, EXTRACTIVES, AND COLOUR

Wood Properties of Tropical Species from the Amazon

Authors

  • Juliana Livian Lima de Abreu Universidade Federal Rural da Amazônia - UFRA
  • Marcela Gomes da Silva Universidade Federal Rural da Amazônia - UFRA
  • Gracialda Costa Ferreira Universidade Federal Rural da Amazônia - UFRA
  • Tamara Suely Filgueira Amorim França Mississippi State University
  • Vanessa Mayara Souza Pamplona Universidade Federal Rural da Amazônia - UFRA
  • Selma Lopes Goulart Universidade Federal Rural da Amazônia - UFRA
  • Thiago de Paula Protasio Universidade Federal Rural da Amazônia - UFRA

Abstract

The objective of this research was to study the characteristics of four tropical species (Jacaranda copaia, Astronium lecointei, Caryocar villosum and Protium altissimum) stored in different periods. Part 1 of this study described the anatomical features of these species, and Part 2 focused on the physical properties more specifically density, extractives and colour changes along the different times of exposure. Samples were collected from logs exposed for different exposure times (0, 1, 4, 6, and 8 years of exposure). Changes in the basic density were observed for all four species studied, where in Caryocar villosum and Jacaranda copaia the changes were highly related to the period of exposure. For extractives content, both in hot and cold water, alternated according to the storage time, being directly proportional in Jacaranda copaia. The color of the wood of all species tended to darken with time of exposure in storage yards, with the species Astronium lecointei being the one that showed the greatest variation in color over time.

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Published

2024-01-10

Issue

Vol. 55 No. 3/4 (2023): Wood and Fiber Science

Section

Research Contributions