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Direct detection of ethyl carbamate in baijiu by molecularly imprinted electrochemical sensors based on perovskite and graphene oxide.
Zheng, Wanqi; Yao, Mingcai; Leng, Yinjiang; Yu, Kangjie; Xiao, Xiongjun; Huang, Huiling; Yu, Xiao; Ma, Yi; Hou, Changjun.
Afiliación
  • Zheng W; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China.
  • Yao M; Engineering Technology Research Center of Special Grain for Wine Making, Yibin 644000, China.
  • Leng Y; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China.
  • Yu K; Engineering Technology Research Center of Special Grain for Wine Making, Yibin 644000, China.
  • Xiao X; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China.
  • Huang H; Engineering Technology Research Center of Special Grain for Wine Making, Yibin 644000, China.
  • Yu X; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China.
  • Ma Y; Engineering Technology Research Center of Special Grain for Wine Making, Yibin 644000, China.
  • Hou C; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China.
Food Chem X ; 23: 101752, 2024 Oct 30.
Article en En | MEDLINE | ID: mdl-39280225
ABSTRACT
Ethyl carbamate (EC), a carcinogen commonly found in Baijiu, requires an efficient detection method for quality control and monitoring. This study introduces a novel molecularly imprinted electrochemical sensor for sensitive and selective EC detection. We proposed a simple sol-gel method for the growth of perovskite-structured lanthanum manganate (LaMnO3) on graphene oxide (GO). A non-enzymatic electrochemical sensor was developed by coating a molecularly imprinted polymer synthesized via precipitation polymerization onto the surface of LaMnO3@GO. LaMnO3, with its superior three-dimensional nanocube structure, demonstrated excellent electrocatalytic activity, while the addition of GO provided a large specific surface area. The results indicate that the developed sensor exhibits exceptional recognition ability and electrochemical activity, which is attributed to the high affinity of LaMnO3@GO@MIP for EC. The sensor displays a broad linear range from 10 to 2000 µM, with a detection limit as low as 2.18 µM and long-term durability of 28 days. Notably, it demonstrates excellent selectivity, reproducibility, and stability even under different interference conditions. The sensor was successfully used to determine EC in real Baijiu samples. Overall, the sensor has broad application prospects for detecting trace contaminants in the field of food safety.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Food Chem X Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Food Chem X Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos