Durability of Hinoki (Chamaecyparis obtusa) stained wood following Anaglyptus subfasciatus infestation

Abstract The Japanese longhorn beetle, Anaglyptus subfasciatus, infests coniferous trees resulting in stained wood and low-value discolored lumber. In this study, the discolored Hinoki (Chamaecyparis obtusa) wood was analysed by GC-MS for n-hexane extract, and laboratory wood block tests against termite was carried out. Stained wood had anti-termitic resistance similar to normal heartwood, and it had about twice the n-hexane extract by weight than obtained from heartwood. One compound, nerolidol, was characteristically found in the stained wood. The results suggest that the stained wood may have produced some bioactive components due to damage by wood decay organisms.