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. 2022 Apr 16;374:131774. doi: 10.1016/j.foodchem.2021.131774. Epub 2021 Dec 4.
Tetracyclines (TCs) residues in animal products have attracted extensive concern due to their potential toxic to human health. Accordingly, it is urgent to develop an efficient method to determine TCs for providing consumers with risk pre-warning. Herein, a novel tungsten oxide quantum dots (WO QDs) fluorescence probe for tetracycline (TET) detection was constructed through ethanol-thermal method, which exhibited intense blue fluorescence under 365 nm UV light. Interestingly, blue-emitting WO QDs could be quenched obviously after the addition of TET, which may be attributed to the synergism of inner filter effect (IFE), fluorescence resonance energy transfer (FRET) and photo-induced electron transfer (PET). Thereby, the fluorescence method was established for TET detection based on WO QDs. Additionally, the presented method was demonstrated by monitoring TET in milk and milk powder with satisfactory recoveries. More importantly, this work offered good demonstration for the detection of food hazard factors.
由于动物产品中的四环素（TCs）残留对人类健康可能具有潜在毒性，因此引起了广泛关注。因此，迫切需要开发一种有效的方法来检测 TCs，以为消费者提供风险预警。在此，通过乙醇热法构建了一种用于检测四环素（TET）的新型氧化钨量子点（WO QDs）荧光探针，在 365nm 紫外光下发出强烈的蓝色荧光。有趣的是，添加 TET 后，蓝色发射的 WO QDs 可以明显猝灭，这可能归因于内滤效应（IFE）、荧光共振能量转移（FRET）和光诱导电子转移（PET）的协同作用。因此，建立了基于 WO QDs 的 TET 检测荧光方法。此外，该方法通过监测牛奶和奶粉中的 TET 得到了验证，回收率令人满意。更重要的是，这项工作为检测食品安全危害因素提供了很好的示范。
