Floresta e Ambiente ()

Behavior of the brown-rot fungus Gloeophyllum trabeum on thermally-modified Eucalyptus grandis wood

  • Fred Willians Calonego,
  • Meire Cristina Nogueira de Andrade,
  • Djanira Rodrigues Negrão,
  • Cinthia Dias Rocha,
  • Marli Teixeira de Almeida Minhoni,
  • João Vicente Latorraca,
  • Elias Taylor Durgante Severo

DOI
https://doi.org/10.4322/floram.2013.028
Journal volume & issue
Vol. 20, no. 3
pp. 417 – 423

Abstract

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In this study, we aimed evaluate the behavior of the brown-rot fungus Gloeophylum trabeum and white-rot fungus Pycnoporus sanguineus on thermally-modified Eucalyptus grandis wood. To this end, boards from five-year-eleven-month-old E. grandis trees, taken from the Duratex-SA company stock, were thermally-modified between 180 ºC and 220 ºC in the Laboratory of Wood Drying and Preservation at Universidade Estadual Paulista - UNESP, Botucatu, Sao Paulo state Brazil. Samples of each treatment were tested according to the ASTM D-2017 (2008) technical norm. The accelerated decay caused by the brown-rot fungus G. trabeum was compared with the decay caused by the white-rot fungus P. sanguineus, studied by Calonego et al. (2010). The results showed that (1) brown-rot fungus caused greater decay than white-rot fungus; and (2) the increase in temperature from 180 to 220 ºC caused reductions between 28.2% and 70.0% in the weight loss of E. grandis samples incubated with G. trabeum.

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