Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China.
J Agric Food Chem. 2020 Nov 11;68(45):12549-12557. doi: 10.1021/acs.jafc.0c02245. Epub 2020 Oct 28.
Recently, innovations of nano/microcarrier formulations have been focused on improving application efficiencies and retention time. In this study, a water-based 2.5% λ-cyhalothrin (LC) microcapsule suspension (CS) was developed by orthogonal test with biodegradable and adhesive polydopamine (PDA) microcapsules (MCs) as carriers. The obtained LC-PDA CS had good suspension properties, flow behavior, storage stability, and rheological properties. LC-PDA CS had higher retention, wettability, and decreased rainwater washing out on the leaves than commercial CS. LC-PDA CS displayed higher insecticidal activity against compared to commercial CS. LC-PDA CS reduced the toxicity of LC to the aquatic organism compared to LC. The above results demonstrated that LC-PDA CS would be eco-friendly water-based pesticides carrier system for prolonging the retention time on target leaf and reducing toxicity to aquatic organisms.
最近，纳米/微载体制剂的创新集中在提高应用效率和滞留时间上。在这项研究中，采用正交试验方法，以可生物降解和粘附的聚多巴胺（PDA）微胶囊（MCs）为载体，开发了一种 2.5%氯氟氰菊酯（LC）水基微胶囊悬浮剂（CS）。所得 LC-PDA CS 具有良好的悬浮性能、流动行为、储存稳定性和流变性能。LC-PDA CS 在叶片上具有更高的滞留性、润湿性和降低雨水冲刷的效果，优于商业 CS。LC-PDA CS 对 显示出比商业 CS 更高的杀虫活性。LC-PDA CS 降低了 LC 对水生生物的毒性，优于 LC。上述结果表明，LC-PDA CS 将是一种环保型水基农药载体系统，可延长目标叶片上的滞留时间，降低对水生生物的毒性。
