A fluorescence biosensor for Salmonella typhimurium detection in food based on the nano-self-assembly of alendronic acid modified upconversion and gold nanoparticles.

本文开发了一种基于适配体识别、阿仑膦酸（ADA）修饰上转换纳米粒（UCNPs）与金纳米粒（AuNPs）纳米自组装的简单快速荧光生物传感器，用于检测食品中的鼠伤寒沙门氏菌（Salmonella typhimurium）。适配体通过Au-S键吸附在AuNPs表面，可保护AuNPs在高浓度盐溶液中不发生聚集；随后AuNPs与UCNPs通过...