Antitermitic potential of heartwood extractives of five Malaysian wood species against the subterranean termite, Coptotermes gestroi was investigated in laboratory experiments. Heartwood extractives of the wood species, Cinnamomum sp., Canarium littorale Blume, Cynometra malaccensis Meeuwen, Eugenia griffithii Duthie and Scorodocarpus borneensis (Baill.) Becc. were removed from wood sawdust using the four solvents, methanol (MeOH), ethanol (EtOH), acetone and toluene:industrial methylated spirit (Tol:IMS). Extraction was done using a Soxhlet extractor. Two different tests, toxicity and repellency, were conducted on filter paper treated with different concentrations (0.5, 1, 2, 3 and 4%) of each wood extract to observe the repellents, feeding response and mortality of termites. No-choice bioassay using Hevea brasiliensis test blocks treated with the same concentrations of each wood extract was also carried out to compare the results with the termiticidal activity of extractives. Termite feeding, repellents, and mortality followed a concentration-dependent response. The highest termite mortality occurred at an extractive concentration of 4% of each wood species. Extractive of each wood species prepared using MeOH showed higher termite mortality, feeding inhibition and lower filter paper consumption when treated with 4% of concentration. Extractive of C. littorale prepared using EtOH as a solvent was least toxic to termite. Acetone extractive of S. borneensis showed significantly higher repellent activity against C. gestroi at 2, 3 and 4% of concentrations compared to the rest of treatments. Further characterization of the extractive content is needed to find out which compounds are responsible for termiticidal and antifeedant activity, either singly or jointly.

在实验室实验中，研究了五种马来西亚木材的心材提取物对地下白蚁（Coptotermes gestroi）的抑制作用。木材种类的心材提取物，Cinnamomum sp。，Canarium littorale Blume，Cynometra malaccensis Meeuwen，Eugenia griffithii Duthie和Scorodocarpus borneensis（保释）。使用四种溶剂甲醇（MeOH），乙醇（EtOH），丙酮和甲苯：工业甲基化酒精（Tol：IMS）从木屑中除去木屑。使用索氏提取器进行提取。在用不同浓度（0.5％，1、2、3和4％）的每种木材提取物处理的滤纸上进行了两种不同的测试，即毒性和防护性，以观察其防护性，摄食反应和白蚁的死亡率。巴西橡胶树的非选择生物测定还进行了用相同浓度的每种木材提取物处理的测试块，以将结果与提取物的杀白蚁活性进行比较。白蚁摄食，驱避剂和死亡率遵循浓度依赖性反应。白蚁死亡率最高的发生在每种木材的4％的提取浓度下。当使用4％的浓度处理时，使用MeOH制备的每种木材的提取物均显示出较高的白蚁死亡率，进食抑制和较低的滤纸消耗量。使用乙醇作为溶剂制备的滨海梭菌的提取物对白蚁的毒性最小。的丙酮萃取S.囊螺表明显著更高驱避活性针对C. gestroi与其余治疗相比浓度分别为2％，3％和4％。需要进一步表征提取物的含量，以找出哪些化合物单独或共同负责杀螨和拒食活性。