Dizman Tomak, Eylem2021-03-202021-03-2020140792-12332191-0359http://doi.org/10.1515/secm-2013-0180https://hdl.handle.net/20.500.12885/1201In this study, changes in chemical composition of aged and unaged Scots pine and beech wood decayed by brown-rot fungi Coniophora puteana and Poria placenta were presented by Fourier transform infrared (FT-IR) spectra. Samples were exposed to six complete cycles of accelerated aging for 12 days and then subjected to brown-rot fungi attack for 8 weeks. Weight loss of samples was found to be 25-46% depending on wood and fungi species and being aged ones. Accelerated aging treatments seemed to have a slight role on chemical composition of Scots pine and beech samples while they increased biodegradation of samples. FT-IR spectra showed degradation of wood carbohydrates revealed by reduction of the peaks responsible for hemicellulose and cellulose at 1730, 1370, 1150, and 897 cm(-1) in pine and 1730, 1370, 1027, and 897 cm(-1) in beech. Stronger lignin peaks at 1650, 1593, 1506, 1455, 1422, 1261, and 1230 cm(-1) in pine and 1650, 1506, 1455, and 1422 cm(-1) in beech were obtained after decay test. FT-IR spectra of samples were consistent with the degradation mechanism of brown-rot fungi. In general, changes in the carbohydrate and lignin peaks were greater in samples exposed to accelerated aging treatments for both wood species.eninfo:eu-repo/semantics/closedAccessagingbrown-rot fungidecayFT-IRwoodArticle10.1515/secm-2013-0180214589595WOS:000341810000013Q3N/A