CHARACTERIZATION OF WOOD DECAY BY ROT FUNGI USING COLORIMETRY AND INFRARED SPECTROSCOPY

• Autor(a) principal: Costa, Mírian de Almeida
• Data de Publicação: 2011
• Outros Autores: Costa, Alexandre Florian da, Pastore, Tereza Cristina Monteiro, Braga, Jez Willian Batista, Gonçalez, Joaquim Carlos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• DOI: 10.5902/198050983814
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/3814
• topic: bio-deterioration; brown rot; white rot; non destructive techniques.; biodeterioração; podridão parda; podridão branca; técnicas não destrutivas

Wood samples of marupá (Simarouba amara) and andiroba (Carapa guianenis) were submitted to Trametes versicolor (white rot) and Gloeophylum trabeum (brown rot) fungi attack. Colorimetry was used to determine the color of the wood before and after wood decaying fungi. To evaluate the changes in chemical compounds levels in the wood samples, the diffuse reflectance medium infrared spectroscopy was used. Both wood were non resistant against white rot fungus, while with brown rot attack andiroba was resistant and marupá was not. After Gloeophyllum trabeum attack both woods changed to a darken color, and after Trametes versicolor attack andiroba changed to a lighter color and marupá darkened slightly, The analysis showed a reduction in the peak intensity of cellulose, hemicellulose and lignin, for both species, after Trametes versicolor attack and a reduction in the peak intensity of cellulose after Gloeophyllum trabeum attack.