澳洲柏木(Callitris glauca)因其紋理特殊以及具有濃烈芳香味道,為近來台灣市面上常用之居家裝潢材料之一。為評估此材種對台灣家白蟻的抑制效果,本研究以水蒸餾法萃取澳洲柏木精油,進行抗白蟻試驗,以印證具天然抗白蟻之優良居家建材,期能減少或改善白蟻對居家之危害。經實驗證實,澳洲柏木之材部精油對家白蟻之致死效果極佳,精油濃度為0.75 mg/mL(2.59 mg/g)時,在一天內對家白蟻之致死率可高達97.3%。其抗家白蟻能力之成分經氣相層析-質譜儀(GC-MS)鑑定主要為氧化型單萜類之香茅酸(citronellic acid)。由本研究之結果得知,澳洲柏木可提供為日後抗白蟻居家裝潢材料之選擇,且及其精油確實具有開發為符合居家環保防蟲產品之潛力。
Because the special texture and strong fragrant flavor of Australian cypress (Callitris glauca), it becoming one of the commonly used home decoration materials in Taiwan. In this study, the essential oil of C. glauca were prepared by using water distillation, simultaneously carries on the anti-termite experiment, appraised various volatile oil opposite party termite lethal or the death anniversary evades the efficiency. According to the results obtained in the bioassay, Australian cypress wood essential oil opposite party termite lethal effect is remarkable. The mortality was 97.3% at a concentration of 0.75 mg/mL (2.59 mg/g) essential oil from woods within one day. The extracted essential oil was analyzed by GC/MS. Citronellic acid, one of the oxygenated mono-terpene, was identified to be the main termiticidal component. Based on the results of this study, Australian cypress might provide to choice for the home decoration materials at anti-termite. The essential oils provide a great potential for developing an environmental-friendly chemicals to prevent termites.