Determination of Biological Activities of Wood Samples Impregnated with Multi-Functional Compounds and Synergistic Effect Analysis Based on Fungal Resistance

In this study, the biological resistance of Scotch pine (Pinus sylvestris) and beech (Fagus orientalis) wood samples which impregnated with individual and combinations of multi-functional compounds. Artificial antioxidant (A), GRAS compounds (G) and nano-SiO2 (N) were chosen as multi-functional compounds. Firstly, the wood samples were impregnated single, binary and ternary combinations of impregnation solutions. Larvicidial resistance of pine samples was investigated against to Hylotrupes bajulus. Termitidicial resistance of all samples were determined using Subterranean termites Reticulitermes. Also, Gloeophyllum trabeum and Poria placenta were used for fungal resistance of beech and pine samples, respectively. Synergistic effects were calculated based on the fungal results. It was concluded that binary combinations of A+G and G+N and also the ternary combination (A+G+N) have a synergistic effect in binary variations for pine wood samples while A+G and A+N binary combinations show synergistic effect for beech wood samples. In addition, it is seen that the ternary combination also has a synergistic effect as in beech wood samples.