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A dual-signal fluorescent sensor based on MoS2 and CdTe quantum dots for tetracycline detection in milk.
Liang, Nini; Hu, Xuetao; Li, Wenting; Wang, Yueying; Guo, Ziang; Huang, Xiaowei; Li, Zhihua; Zhang, Xinai; Zhang, Jiukai; Xiao, Jianbo; Zou, Xiaobo; Shi, Jiyong.
Afiliación
  • Liang N; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Hu X; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Li W; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Wang Y; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Guo Z; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Huang X; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Li Z; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Zhang X; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
  • Zhang J; Agro-Product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 102600, China.
  • Xiao J; Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, E-32004 Ourense, Spain.
  • Zou X; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu University), Jiangsu Education Department, China.
  • Shi J; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu University), Jiangsu Education Department, China. Electronic address: shi_jiyong@ujs.edu.cn.
Food Chem ; 378: 132076, 2022 Jun 01.
Article en En | MEDLINE | ID: mdl-35042115
A dual-signal fluorescent sensor was developed for tetracycline (TET) detection in milk with excellent reproducibility and stability. In this protocol, molybdenum disulfide quantum dots (MoS2 QDs) with blue fluorescence and cadmium telluride quantum dots (CdTe QDs) with yellow fluorescence were synthesized to establish the MoS2/CdTe-based sensor with two fluorescence emission peaks at 433 nm and 573 nm. With the addition of TET, the fluorescence of MoS2/CdTe were quenched by photoinduced electron transfer (PET), and the fluorescence of CdTe QDs were quenched more obvious than MoS2 QDs. With the strategy, a calibration curve was established between the TET concentration in the range of 0.1-1 µM and the ratio of fluorescence intensity at 573 nm and 433 nm (F573/F433). Furthermore, the dual-signal sensor was applied for TET detection in milk samples with the recovery of 95.53-104.22% and the relative standard deviation (RSD) less than 5%, indicating the strong application potential.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Cadmio / Puntos Cuánticos Tipo de estudio: Diagnostic_studies Límite: Animals Idioma: En Revista: Food Chem Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Cadmio / Puntos Cuánticos Tipo de estudio: Diagnostic_studies Límite: Animals Idioma: En Revista: Food Chem Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido