Laboratory study on the termiticidal efficacy of Eremophilone oil

IRG/WP 09-30497

D K Scown, J W Creffield, R Spooner-Hart

A novel timber preservative formulation, Termilone® TT, is being developed by BioProspect Limited. This environmentally friendly preservative formulation incorporates Eremophilone oil, extracted from Eremophila mitchellii, as the active ingredient. Chemical analysis performed on Pinus radiata sapwood specimens treated with the Termilone® TT formulation revealed that the Eremophilone oil is relatively stable within the timber even after being subjected to artificial weathering in vacuum ovens for five days. After exposure in a laboratory bioassay, P. radiata specimens treated with Termilone® TT formulation containing 3% m/m Eremophilone oil sustained slight to moderate damage by Mastotermes darwiniensis. Against M. darwiniensis, the performance of P. radiata specimens treated with this formulation was comparable to specimens treated with the approved H2 retention of the industry reference insecticide, permethrin (0.02% m/m). In addition, treatment of P. radiata specimens with the Termilone® TT formulation containing 3% m/m Eremophilone oil successfully prevented significant damage by Coptotermes acinaciformis.


Keywords: Termilone® TT, Eremophilone oil, Eremophila mitchellii, laboratory bioassay, subterranean termites, Coptotermes acinaciformis, Mastotermes darwiniensis, Pinus radiata

Conference: 09-05-24/28 Beijing, China


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