Development of an impedimetric immunosensor based on electropolymerized polytyramine films for the direct detection of Salmonella typhimurium in pure cultures of type strains and inoculated real samples.

本文首次报道了一种基于电聚合多酪胺（Ptyr）膜的法拉第阻抗免疫传感器，用于牛奶中鼠伤寒沙门氏菌（S. typhimurium）的检测。多克隆抗沙门氏菌抗体在戊二醛蒸气存在下交联固定于Ptyr修饰金电极上。通过电容测量评估Ptyr膜的介电行为，通过阻抗测量考察其中性水溶液中的稳定性，并研究成膜液中酪胺浓度对免疫传感器灵敏度和动态范围...