Caracterização do ataque de fungos apodrecedores de madeiras através da colorimetria e da espectroscopia de infravermelho | Zendy

Mírian de Almeida Costa | Zendy; Alexandre Florian da Costa | Zendy; Tereza Cristina Monteiro Pastore | Zendy; Jez Willian Batista Braga | Zendy; Joaquim Carlos Gonçalez | Zendy

Open Access

Caracterização do ataque de fungos apodrecedores de madeiras através da colorimetria e da espectroscopia de infravermelho

Author(s) -

Mírian de Almeida Costa,

Alexandre Florian da Costa,

Tereza Cristina Monteiro Pastore,

Jez Willian Batista Braga,

Joaquim Carlos Gonçalez

Publication year - 2011

Publication title -

ciência florestal

Language(s) - English

Resource type - Journals

eISSN - 1980-5098

pISSN - 0103-9954

DOI - 10.5902/198050983814

Subject(s) - trametes versicolor , chemistry , horticulture , biology , laccase , biochemistry , enzyme

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.