insecticide with high efficacy against aphids and planthoppers, and has been used worldwide. To monitor its residue in food, a highly specific and sensitive monoclonal antibody (McAb) was prepared, and an indirect competitive enzyme-linked immunosorbent assay (icELISA) was developed to detect pymetrozine, with a 50% inhibition value (IC50) of 7.70 μg/L. The McAb showed little affinity for acetamiprid
吡蚜酮是一种
新烟碱类
杀虫剂,对蚜虫和飞虱具有高效效果,已在全球范围内使用。为监测其在食品中的残留,制备了高度特异性和敏感性的单克隆
抗体 (M
CAB),并开发了间接竞争性酶联免疫吸附试验 (icELI
SA) 检测
吡蚜酮,50% 抑制值 (IC50) 为 7.70 μg/L。M
CAB 对
啶虫脒、己嗪酮、安他佰啶、nitenpyram、metribuzin 和
吡虫啉几乎没有亲和力。通过分析西兰花、卷心菜、小麦、玉米、
水稻、鸡肉、鱼类和小龙虾样品计算出的检测限 (LOD) 为 1.56 至 2.72 μg/kg,平均回收率为 81.25 至 103.19%。使用
液相色谱-串联质谱 (LC-MS/MS) 确认 icELI
SA。这些结果表明,优化的 icELI
SA 是监测食品中
吡蚜酮残留的一种方便有效的分析工具。