CHANGES OF THE PINE WOOD (PINUS SYLVESTRIS L.) CHEMICAL COMPOSITION DURING WHITE- AND BROWN-ROT DECAY ORIGINATED FROM CHOSENFUNGI SPECIES

摘要

Scots pine wood (Pinus sylvestris L.) was submitted for controlled decay using two testing fungi species causing: brown-rot decay (Coniophora puteana (Schum.: Fr.) P. Karst.) and white-rot decay (Trametes versicolor (L.: Fr.) Pilat). The influence offungi activity on wood chemical composition changes was examined. Trametes versicolor fungus (white-rot) simultaneously decomposes all of wood structural components - cellulose, hemicelluloses and lignin. The rate of cellulose and lignin content decreaseis similar. Brown-rot decay does not cause lignin decomposition, only carbohydrates decompose. Fast cellulose decomposition takes place. Its rate is higher than wood mass-loss indicates. Research presented in this paper allows finding the correlation between the mass-loss of wood decayed by given fungus species and structural wood components content.