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Rapid detection of tertiary butylated hydroquinone in food samples using Mn-MOF@f-CNF composite-modified screen-printed electrode.
Srinivasan, Praveenkannan; Rajaji, Umamaheswari; Sethuraman, Mathur Gopalakrishnan; Karuppiah, Chelladurai; Yusuf, Kareem; Liu, Ting-Yu.
Afiliación
  • Srinivasan P; Department of Chemistry, The Gandhigram Rural Institute-Deemed to Be University, Gandhigram, 624 302, Dindigul, Tamil Nadu, India.
  • Rajaji U; Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 243303, Taiwan.
  • Sethuraman MG; Centre for Applied Research, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India.
  • Karuppiah C; Research Center for Intelligence Medical Devices, Ming Chi University of Technology, 243303, New Taipei City, Taiwan.
  • Yusuf K; Department of Chemistry, The Gandhigram Rural Institute-Deemed to Be University, Gandhigram, 624 302, Dindigul, Tamil Nadu, India. mgsethu@gmail.com.
  • Liu TY; Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea.
Mikrochim Acta ; 191(10): 576, 2024 09 06.
Article en En | MEDLINE | ID: mdl-39240389
ABSTRACT
Hydroquinone-based organic molecules are often used as unavoidable preservatives in the food industry. Among these additives, tertiary butylated hydroquinone (TBHQ) is widely employed as a preservative in various processed foods. However, the potential health risks associated with the excessive presence of TBHQ in food products have raised significant concerns. To address this pressing issuea novel binder-free composite composed of a manganese metal-organic framework and functionalized carbon nanofibers (Mn-MOF/f-CNF) has been developed as an electrode modifier for the ultrasensitive detection of TBHQ in food samples. The Mn-MOF/f-CNF composite was achieved using the ultrasonication method, revealing a lamellar sheet-like structure of the Mn-MOF and the curly thread-like fibrous structure of f-CNF. The developed Mn-MOF/f-CNF/SPE sensor system resulted in well-defined redox signals for TBHQ detection in a neutral pH solution. Compared to the unmodified SPE system, the modified system showed approximately a 300 mV reduction in overpotential and a twofold increase in peak current signal for TBHQ detection. The Mn-MOF/f-CNF/SPE sensor system showed a linear concentration window of 0.01 to 800 µM with a sensitivity of 6.28 µA µM-1 cm-2 and the obtained detection limit was 1.36 nM. Additionally, the proposed sensor displayed excellent reproducibility and repeatable results with an RSD of less than 5%. The real-time applicability of the Mn-MOF/f-CNF/SPE sensor system was demonstrated using real samples such as potato chips and instant noodles, showing excellent results with a recovery range of 95.1-98.5%.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Electrodos / Técnicas Electroquímicas / Límite de Detección / Estructuras Metalorgánicas / Hidroquinonas / Manganeso Idioma: En Revista: Mikrochim Acta Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Austria
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Electrodos / Técnicas Electroquímicas / Límite de Detección / Estructuras Metalorgánicas / Hidroquinonas / Manganeso Idioma: En Revista: Mikrochim Acta Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Austria