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Enhanced Acetaminophen Detection in Dolo-650 Tablets Using Electrocatalyst SnWO4-DNA Composite and Its Antibacterial
Sneka Kumaresan1, Girija Srinivasan1, Murugan Shibasini2,3
1Polymer Electronics Lab, Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi 630 003, Tamil Nadu, India.
ACS Applied Bio Materials
|June 4, 2025
Summary
A novel electrochemical sensor using SnWO4-DNA composite detects acetaminophen (AMP) in D-650 tablets with high sensitivity and a wide linear range. This multifunctional material also exhibits antibacterial properties against Klebsiella pneumoniae and Staphylococcus aureus.
Area of Science:
- Electrochemistry
- Materials Science
- Nanotechnology
Background:
- Acetaminophen (AMP) is a widely used analgesic, necessitating sensitive detection methods.
- Developing multifunctional materials for simultaneous chemical sensing and antimicrobial applications is of significant interest.
Purpose of the Study:
- To develop a highly sensitive electrochemical sensor for acetaminophen detection in pharmaceutical formulations.
- To investigate the antibacterial properties of the developed sensing material.
- To explore the potential of the SnWO4-DNA composite as a dual-use material in medical diagnostics.
Main Methods:
- Fabrication of a SnWO4-DNA composite as the sensing material.
- Characterization using Brunauer-Emmett-Teller (BET) for surface area, Transmission Electron Microscopy (TEM) for DNA presence, and X-ray photoelectron spectroscopy (XPS) for chemical composition.
- Electrochemical measurements for acetaminophen detection and antibacterial assays against Klebsiella pneumoniae and Staphylococcus aureus.
Main Results:
- The SnWO4-DNA sensor demonstrated high sensitivity for acetaminophen detection with a wide linear range (200 nM-1 mM) and a low limit of detection (55 nM).
- The sensor exhibited excellent reversibility and fast detection capabilities, suitable for real-time monitoring.
- The composite effectively inhibited the growth of Klebsiella pneumoniae and Staphylococcus aureus, indicating significant antibacterial activity.
Conclusions:
- The developed SnWO4-DNA electrochemical sensor is highly effective for sensitive acetaminophen detection.
- The material possesses dual functionality, offering both chemical sensing and potent antibacterial properties.
- This innovative composite holds promise for applications in medical diagnostics, pathogen control, and personalized medicine.

