Syed Putra, Sharifah Shahira and Shalauddin, Md. and Akhter, Shamima and Basirun, Wan Jefrey and Elgharbawy, Amal A.M. and Ahmed, Syed Rahin and Srinivasan, Seshasai and Rajabzadeh, Amin Reza and Hayyan, Adeeb and Alanazi, Yousef Mohammed and Chakrabarti, Barun Kumar and Chee, Tong John Low
(2025)
A highly selective electrochemical sensor by using bimetallic metal organic framework for the detection of 3-Monochloropropane-1,2-diol esters
(3-MCPDEs).
Journal of Food Composition and Analysis, 144.
pp. 1-15.
ISSN 0889-1575
E-ISSN 1096-0481
Abstract
3-Monochloropropane-1,2-diol esters (3-MCPDEs) are hazardous contaminants in heat-processed foods, raising
serious food safety concerns. In this study, a high-performance Fe-Mn-MOF/NIF sensor was developed via a
simple hydrothermal method for rapid and precise 3-MCPDEs detection. Structural and morphological analyses
confirmed the sensor stability, with FTIR revealing strong interactions between (-CH) and (O-H) stretching vibrations, while XRD indicated slight crystal distortion upon detection. FESEM and TEM confirmed minimal
aggregation, ensuring homogeneous iron (Fe) and manganese (Mn) distribution. The sensor exhibited a large
surface area, significantly enhancing its detection capability. Using square wave voltammetry (SWV) method, it
achieved a broad linear range (0.05–255 µM), low detection limit (0.002 µM), and exceptional sensitivity
(43.71 µA µM− 1 cm− 2
). Comparative analysis with GC-MS demonstrated comparable accuracy, while real-sample
testing in soy sauce confirmed high recovery rates. Unlike conventional methods, this sensor enables costeffective, rapid, and on-site detection, offering a transformative approach for food safety monitoring. With its
superior performance, the Fe-Mn-MOF/NIF sensor presents a breakthrough in electrochemical detection, paving
the way for enhanced food quality control and public health protection.
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