3.Results and discussion
3.1.Fungul bioassay
Average weight losses of the MDF and solid wood specimens exposed to accelerated aging and test fungi G.trabeum, P.placenta, and T. versicolor for 12 weeks are given in Figs. 2, 3, and 4, respectively. There was a significant effect of board composition on the susceptibility of MDF specimens to G. trabeum attack (Fig.2). MDF specimens made from oak and mixed furnish were more resistant to G. trabeum attack than pine and beech MDF specimens. Average weight loss in MDF specimens containing 100% oak was 11.3%, while the average weight loss in MDF specimens produced from mixed furnish was 13.6%. MDF specimens containing beech were the least resistant compared to other MDF specimens. In addition, accelerated aging in both MDF and solid wood specimens caused more weight loss. Despite lower percentage weight losses of MDF specimens, higher weight losses were determined in solid wood specimens exposed to G. trabeum. When compared to MDF specimens, the effect of accelerated aging was lower in solid wood specimens. This comparison of aged and unprocessed MDF and solid wood specimens should be helpful in determining the effect of water, steam, and temperature during the accelerated aging procedure.