Centro de Investigaciones de Plagas e Insecticidas (CITEFA-CONICET), Juan Bautista de La Salle 4397 (B1603ALO), Villa Martelli, Buenos Aires, Argentina.
J Econ Entomol. 2011 Jun;104(3):1087-92. doi: 10.1603/ec09431.
Oils extracted from various species of Eucalyptus (Eucalyptus badjensis Beuzev & Welch, Eucalyptus badjensis x Eucalyptus nitens, Eucalyptus benthamii variety dorrigoensis Maiden & Cambage, Eucalyptus botryoides Smith, Eucalyptus dalrympleana Maiden, Eucalyptus fastigata Deane & Maiden, Eucalyptus nobilis L.A.S. Johnson & K. D. Hill, Eucalyptus polybractea R. Baker, Eucalyptus radiata ssp. radiata Sieber ex Spreng, Eucalyptus resinifera Smith, Eucalyptus robertsonii Blakely, Eucalyptus rubida Deane & Maiden, Eucalyptus smithii R. Baker, Eucalyptus elata Dehnh, Eucalyptus fraxinoides Deane & Maiden, E. obliqua L'Hér) were obtained by hydrodistillation. The chemical composition of essential oils was determined by gas chromatography coupled to mass spectrometry. Essential oils were mainly composed of 1,8-cineole, alpha-pinene, alpha-terpineol, 4-terpineol, and p-cymene. Vapors from these essential oils and their major components were found to be toxic to Haematobia irritans (L.) (Diptera: Muscidae) adults. An aliquot of each oil was placed in a cylindrical test chamber, and the number of knocked down flies was recorded as a function of time. Knockdown time 50% was then calculated. Results showed that essential oil of E. polybractea had the highest knockdown activity of 3.44 min. A correlation was observed between the content of 1,8-cineole in the Eucalyptus essential oils and the corresponding toxic effect.
从各种桉树物种（贝泽夫和韦尔奇桉树（Eucalyptus badjensis Beuzev & Welch）、蓝桉×亮果桉（Eucalyptus badjensis x Eucalyptus nitens）、多瑞戈桉树（Eucalyptus benthamii variety dorrigoensis Maiden & Cambage）、波状桉（Eucalyptus botryoides Smith）、达林普尔桉（Eucalyptus dalrympleana Maiden）、细叶桉（Eucalyptus fastigata Deane & Maiden）、贵族桉（Eucalyptus nobilis L.A.S. Johnson & K. D. Hill）、多苞桉（Eucalyptus polybractea R. Baker）、辐射桉（Eucalyptus radiata ssp. radiata Sieber ex Spreng）、树脂桉（Eucalyptus resinifera Smith）、罗伯逊桉（Eucalyptus robertsonii Blakely）、红桉（Eucalyptus rubida Deane & Maiden）、山桉（Eucalyptus smithii R. Baker）、白千层（Eucalyptus elata Dehnh）、赤桉（Eucalyptus fraxinoides Deane & Maiden）、蓝桉（E. obliqua L'Hér）通过水蒸馏法提取。通过气相色谱-质谱联用技术确定精油的化学组成。精油主要由 1,8-桉叶油醇、α-蒎烯、α-萜品醇、4-萜品醇和对伞花烃组成。发现这些精油及其主要成分的蒸气对赤拟谷盗（Haematobia irritans （L.））成虫有毒。将每种油的等分试样置于圆柱形测试室中，并记录击倒的苍蝇数量随时间的变化。然后计算击倒时间 50%。结果表明，多苞桉精油具有最高的击倒活性，为 3.44 分钟。观察到桉树精油中 1,8-桉叶油醇的含量与相应的毒性效应之间存在相关性。
