De Geyter Ellen, Geelen Danny, Smagghe Guy
Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, BE-9000 Gent, Belgium.
Commun Agric Appl Biol Sci. 2007;72(3):645-8.
In the search for new, natural insecticides, numerous scientists are currently trying to obtain useful compound from plants. A possibly interesting class of molecules are the saponins, a group of steroidal or triterpenoidal secondary plant metabolites with divergent biological activities. In this study, we investigated the activity of saponins against living caterpillars Spodoptera littoralis) and aphids (Acyrthosiphon pisum) via treatment on artificial diets containing different concentrations of saponins. We conclude that saponins have insecticidal activity, causing mortality and/or growth inhibition in the tested insects, although from our experiments the mode of action could not be identified.
在寻找新型天然杀虫剂的过程中，目前众多科学家正试图从植物中获取有用的化合物。一类可能有趣的分子是皂苷，它是一组具有不同生物活性的甾体或三萜类次生植物代谢产物。在本研究中，我们通过在含有不同浓度皂苷的人工饲料上进行处理，研究了皂苷对活体毛虫（斜纹夜蛾）和蚜虫（豌豆蚜）的活性。我们得出结论，皂苷具有杀虫活性，可导致受试昆虫死亡和/或生长抑制，尽管从我们的实验中无法确定其作用方式。
