Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Environ Sci Pollut Res Int. 2024 Feb;31(10):14845-14857. doi: 10.1007/s11356-024-32146-y. Epub 2024 Jan 29.
The global consumption of antibiotics leads to their possible occurrence in the environment. In this context, nature-based solutions (NBS) can be used to sustainably manage and restore natural and modified ecosystems. In this work, we studied the efficiency of the NBS free-water surface wetlands (FWSWs) using Eichhornia crassipes in microcosm for enrofloxacin removal. We also explored the behavior of enrofloxacin in the system, its accumulation and distribution in plant tissues, the detoxification mechanisms, and the possible effects on plant growth. Enrofloxacin was initially taken up by E. crassipes (first 100 h). Notably, it accumulated in the sediment at the end of the experimental time. Removal rates above 94% were obtained in systems with sediment and sediment + E. crassipes. In addition, enrofloxacin was found in leaves, petioles, and roots (8.8-23.6 µg, 11-78.3 µg, and 10.2-70.7 µg, respectively). Furthermore, enrofloxacin, the main degradation product (ciprofloxacin), and other degradation products were quantified in the tissues and chlorosis was observed on days 5 and 9. Finally, the degradation products of enrofloxacin were analyzed, and four possible metabolic pathways of enrofloxacin in E. crassipes were described.
全球抗生素的消耗导致其可能出现在环境中。在这种情况下，可以利用基于自然的解决方案（NBS）来可持续地管理和恢复自然和改良的生态系统。在这项工作中，我们使用凤眼莲（Eichhornia crassipes）在微宇宙中研究了自由水面湿地（FWSWs）的 NBS 去除恩诺沙星的效率。我们还探索了恩诺沙星在系统中的行为、在植物组织中的积累和分布、解毒机制以及对植物生长的可能影响。恩诺沙星最初被凤眼莲吸收（前 100 小时）。值得注意的是，它在实验结束时积累在沉积物中。在有沉积物和沉积物+凤眼莲的系统中，去除率超过 94%。此外，在叶片、叶柄和根中发现了恩诺沙星（分别为 8.8-23.6μg、11-78.3μg 和 10.2-70.7μg）。此外，还在组织中定量了恩诺沙星、主要降解产物（环丙沙星）和其他降解产物，并在第 5 天和第 9 天观察到叶片黄化。最后，分析了恩诺沙星的降解产物，并描述了恩诺沙星在凤眼莲中的四种可能的代谢途径。
