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首页> 美国卫生研究院文献>Journal of Insect Science >Chemical Composition and Larvicidal Activities of the Himalayan Cedar Cedrus deodara Essential Oil and Its Fractions Against the Diamondback Moth Plutella xylostella
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Chemical Composition and Larvicidal Activities of the Himalayan Cedar Cedrus deodara Essential Oil and Its Fractions Against the Diamondback Moth Plutella xylostella

机译：喜马拉雅雪松雪松雪松精油的化学成分和杀幼虫活性及其对小菜蛾小菜蛾的组分

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Plants and plant-derived materials play an extremely important role in pest management programs. Essential oil from wood chips of Himalayan Cedar, Cedrus deodara (Roxburgh) Don (Pinales: Pinaceae), was obtained by hydrodistillation and fractionated to pentane and acetonitrile from which himachalenes and atlantones enriched fractions were isolated. A total of forty compounds were identified from these fractions using GC and GC-MS analyses. Essential oils and fractions were evaluated for insecticidal activities against second instars of the diamondback moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae), using a leaf dip method. All samples showed promising larvicidal activity against larvae of P. xylostella. The pentane fraction was the most toxic with a LC50 value of 287 µg/ml. The himachalenes enriched fraction was more toxic (LC50 = 362 µg/ml) than the atlantones enriched fraction (LC50 = 365 µg/ml). LC50 of crude oil was 425 µg/ml and acetonitrile fraction was LC50 = 815 µg/ml. The major constituents, himachalenes and atlantones, likely accounted for the insecticidal action. Present bioassay results revealed the potential for essential oil and different constituents of C. deodara as botanical larvicides for their use in pest management.
机译：植物和植物来源的材料在有害生物管理计划中发挥着极其重要的作用。通过加氢蒸馏从喜马拉雅雪松木（Cedrus deodara（Roxburgh）Don（Pinales：Pinaceae））的木片中提取精油，然后分馏成戊烷和乙腈，从中分离出富含喜马ale香素和Atlantones的馏分。使用GC和GC-MS分析从这些馏分中总共鉴定出40种化合物。使用叶浸法评价香精油和馏分对小菜蛾小菜蛾小鳞蛾（鳞翅目：Yponomeutidae）的第二龄幼虫的杀虫活性。所有样品均显示出对小菜蛾幼虫有希望的杀幼虫活性。戊烷馏分的毒性最高，LC50值为287 µg / ml。富含himachalenes的馏分（LC50 = 365 µg / ml）的毒性更高（LC50 = 362 µg / ml）。原油的LC50为425μg/ ml，乙腈级分为LC50 ＝815μg/ ml。主要成分喜马ale烯和大西洋蛋白可能是杀虫作用的原因。目前的生物测定结果表明，香精油和C. deodara的不同成分作为植物性杀幼虫剂可用于有害生物管理。

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