Wandjou Joice G Nkuimi, Baldassarri Cecilia, Ferrati Marta, Maggi Filippo, Pavela Roman, Tsabang Nole, Petrelli Riccardo, Ricciardi Renato, Desneux Nicolas, Benelli Giovanni
Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, 62032 Camerino, Italy.
Crop Research Institute, Drnovska 507, 161 06 Prague 6, Czech Republic.
Plants (Basel). 2022 Sep 9;11(18):2353. doi: 10.3390/plants11182353.
Recently, spices have attracted the attention of scientists and agrochemical companies for their potential as insecticidal and acaricidal agents, and even as repellents to replace synthetic compounds that are labeled with detrimental impacts on environment and human and animal health. In this framework, the aim of this study was to evaluate the insecticidal potential of the essential oils (EOs) obtained from three Cameroonian aromatic plants, namely (Gaertn.) Dunal, (Dunal) A. Rich., and (J. Pereira) K. Schum. They were produced by hydrodistillation, with yields of 3.84, 4.89, and 0.85%, respectively. The chemical composition was evaluated by GC-MS analysis. The EOs and their major constituents (i.e., geraniol, sabinene, α-pinene, -cymene, α-phellandrene, and β-pinene) were tested against the polyphagous moth pest, i.e., (Boisd.), the common housefly, L., and the filariasis and arbovirus mosquito vector, Say. Our results showed that and EOs were the most effective against adults, being effective on both males (22.1 µg adult) and females (LD: 29.1 µg adult). The EO and geraniol showed the highest toxicity on with LD values of 29.3 (123.5) and 25.3 (83.2) µg larva, respectively. Last, the EOs from and , as well as the major constituents -cymene and α-phellandrene, were the most toxic against larvae. The selected EOs may potentially lead to the production of cheap and effective botanical insecticides for African smallholders, although the development of effective formulations, a safety evaluation, and an in-depth study of their efficacy on different insect species are needed.
最近，香料因其作为杀虫剂、杀螨剂的潜力，甚至作为驱虫剂以取代那些被标记为对环境以及人类和动物健康有不利影响的合成化合物，而吸引了科学家和农用化学品公司的关注。在此框架下，本研究的目的是评估从喀麦隆三种芳香植物，即（加尔特纳）杜纳尔、（杜纳尔）A. 里奇和（J. 佩雷拉）K. 舒姆中提取的精油（EOs）的杀虫潜力。它们通过水蒸馏法生产，产率分别为3.84%、4.89%和0.85%。通过气相色谱 - 质谱联用（GC - MS）分析对其化学成分进行了评估。这些精油及其主要成分（即香叶醇、桧烯、α - 蒎烯、对异丙基甲苯、α - 水芹烯和β - 蒎烯）针对多食性蛾类害虫，即（博伊斯德）、常见家蝇、L. 以及丝虫病和虫媒病毒蚊媒赛伊进行了测试。我们的结果表明，和EOs对成虫最有效，对雄性（每只成虫22.1微克）和雌性（LD：每只成虫29.1微克）均有效。EO和香叶醇对的毒性最高，LD值分别为29.3（123.5）和25.3（83.2）微克/幼虫。最后，和的EOs以及主要成分对异丙基甲苯和α - 水芹烯对幼虫毒性最大。尽管需要开发有效的配方、进行安全性评估并深入研究它们对不同昆虫种类的功效，但所选的EOs可能有潜力为非洲小农户生产廉价且有效的植物性杀虫剂。
