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Fluorescent probes based on N-CQDs: For direct detection of food additives STPP and Al3.
Wang, Jianghua; Li, Qing; Wang, Weijie; Wang, Qian; Fu, Yingqiang.
Afiliación
  • Wang J; School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China; Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Wuhu, Anhui 241000, PR China.
  • Li Q; School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China; Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Wuhu, Anhui 241000, PR China.
  • Wang W; School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China; Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Wuhu, Anhui 241000, PR China.
  • Wang Q; School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China; Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Wuhu, Anhui 241000, PR China.
  • Fu Y; School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, PR China; Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Wuhu, Anhui 241000, PR China. Electronic address: fyq@ahpu.edu.cn.
Spectrochim Acta A Mol Biomol Spectrosc ; 324: 125036, 2025 Jan 05.
Article en En | MEDLINE | ID: mdl-39197210
ABSTRACT
Sodium tripolyphosphate (STPP), as one of the many food additives, can cause gastrointestinal discomfort and a variety of adverse reactions when ingested by the human body, which is a great potential threat to human health. Therefore, it is necessary to develop a fast, sensitive and simple method to detect STPP in food. In this study, we synthesized a kind of nitrogen-doped carbon quantum dots (N-CQDs), and were surprised to find that the addition of STPP led to the gradual enhancement of the emission peaks of the N-CQDs, with a good linearity in the range of 0.067-1.96 µM and a low detection limit as low as 0.024 µM. Up to now, there is no report on the use of carbon quantum dots for the direct detection of STPP. Meanwhile, we found that the addition of Al3+ effectively bursts the fluorescence intensity of N-CQDs@STPP solution and has a good linear relationship in the range of 0.33-6.25 µM with a lower detection limit of 0.24 µM. To this end, we developed a fluorescent probe to detect STPP and Al3+. In addition, the probe was successfully applied to the detection of bread samples, which has great potential for practical application.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polifosfatos / Espectrometría de Fluorescencia / Carbono / Puntos Cuánticos / Límite de Detección / Colorantes Fluorescentes / Aditivos Alimentarios Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2025 Tipo del documento: Article Pais de publicación: Reino Unido
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polifosfatos / Espectrometría de Fluorescencia / Carbono / Puntos Cuánticos / Límite de Detección / Colorantes Fluorescentes / Aditivos Alimentarios Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2025 Tipo del documento: Article Pais de publicación: Reino Unido