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

Ciencia Florestal

Mírian de Almeida Costa¹ 

[1] UFSM

关键词: biodeterioração;    podridão parda;    podridão branca;    técnicas não destrutivas;   

DOI  :  10.5902/198050983814

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Pesquisas Florestais

【 摘 要 】

Wood samples of marupá ( Simarouba amara ) and andiroba ( Carapa guianenis ) were submitted toTrametes versicolor(white rot) andGloeophylum 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. AfterGloeophyllum trabeumattack both woods changed to a darken color, and afterTrametes versicolorattack 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, afterTrametes versicolorattack and a reduction in the peak intensity of cellulose afterGloeophyllum trabeumattack.

【 授权许可】

CC BY-NC