College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
Food Chem. 2019 Nov 1;297:124969. doi: 10.1016/j.foodchem.2019.124969. Epub 2019 Jun 10.
The wide use of tetracyclines (TCs) for prevention and therapy of animal diseases may result in excessive residues in animal products, which could pose serious risks to human health. A novel molybdenum disulfide nanoplates (MoS NPs)-based fluorescent sensor for tetracycline (TET) is reported. The MoS NPs, synthesized via a facile bottom-up hydrothermal route, showed blue fluorescence at 430 nm in aqueous solution. Interestingly, its fluorescence was quenched significantly upon addition of TET, which is mainly due to a combination of the inner filter effect and electron transfer. Thus, the MoS NPs based fluorescence sensor was delineated for the detection of TET. The methodology here presented showed a low detection limit of 0.032 μM and satisfied recoveries from 88.46% to 108.62% in spiked milk, milk powder and bovine muscle samples.
四环素（TCs）被广泛用于预防和治疗动物疾病，这可能导致动物产品中存在过量残留，从而对人类健康造成严重风险。本文报道了一种基于二硫化钼纳米片（MoS NPs）的新型四环素（TET）荧光传感器。通过简便的自下而上水热法合成的 MoS NPs 在水溶液中在 430nm 处显示出蓝色荧光。有趣的是，加入 TET 后其荧光显著猝灭，这主要归因于内滤效应和电子转移的结合。因此，基于 MoS NPs 的荧光传感器被用于检测 TET。本研究提出的方法在牛奶、奶粉和牛肌肉样品中的检测限低至 0.032μM，加标回收率为 88.46%至 108.62%。
