Xu Wangjin, Shen Dianjing, Chen Xiaojun, Zhao Ming, Fan Tianle, Wu Qinchao, Meng Zhiyuan, Cui Jiajia
College of Plant Protection, Yangzhou University/Joint International Research Laboratory of Agriculture & Agri-Product Safety (Yangzhou University), Jiangsu, Yangzhou, 225009, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Oct;30(48):106047-106058. doi: 10.1007/s11356-023-29842-6. Epub 2023 Sep 19.
Nanotechnology has been widely applied for pesticide carriers, which is an important way to improve the utilization, stability, and sustained release of pesticides. Mesoporous silica nanoparticles (MSNs) are a nanomaterial with adjustable particle and pore sizes, with a high specific surface area and good biocompatibility. Rotenone is a non-systemic botanical insecticide that is easily degraded in the environment. We used a modified soft-template method to prepare MSNs, in which rotenone was loaded using the solvent evaporation method. The prepared rotenone nanopesticide based on mesoporous silica showed considerable drug loading rates of 33.2%. Moreover, the prepared rotenone nanoparticles showed improved photostability and sustained release behavior, which improved the translocation of rotenone in tomato plants. Finally, the rotenone nanoparticles displayed superior insecticidal activity compared to traditional preparations. In summary, the rotenone nanopesticide improved the persistence and utilization rates of rotenone. These findings are of significance in reducing pesticide usage, mitigating environmental pollution, and ensuring food safety.
纳米技术已被广泛应用于农药载体，这是提高农药利用率、稳定性和缓释性的重要途径。介孔二氧化硅纳米粒子（MSNs）是一种粒径和孔径可调节的纳米材料，具有高比表面积和良好的生物相容性。鱼藤酮是一种非内吸性植物源杀虫剂，在环境中易降解。我们采用改进的软模板法制备MSNs，并通过溶剂蒸发法负载鱼藤酮。基于介孔二氧化硅制备的鱼藤酮纳米农药显示出相当可观的载药率，为33.2%。此外，制备的鱼藤酮纳米粒子表现出改善的光稳定性和缓释行为，这提高了鱼藤酮在番茄植株中的转运。最后，鱼藤酮纳米粒子与传统制剂相比显示出优异的杀虫活性。总之，鱼藤酮纳米农药提高了鱼藤酮的持久性和利用率。这些发现对于减少农药使用、减轻环境污染和确保食品安全具有重要意义。
