How NFC and Electrochemical Sensing Detect Salmonella in Food

Detecting Salmonella in Food with Electrochemical Lateral Flow and NFC Technology 

Unlocking smarter, data-driven diagnostics with the SIC4341 potentiostat sensor interface chip, by integrating electrochemical sensing with lateral flow immunosensor (LFIA). This increases sensitivity and transforms qualitative outcomes into quantitative digital data. Specifically, sensitivity in diagnostics means how small an amount of bacteria the test can reliably detect. With increased sensitivity, the test can detect smaller amounts, including Salmonella bacteria in food samples.

Dr. Sudkate Chaiyo — Institute of Biotechnology and Genetic Engineering, Chulalongkorn University — has developed an advanced Label-Free Electrochemical Lateral Flow Immunosensor (LF-eLFIA). This technology integrates seamlessly with Near Field Communication (NFC) technology for detection of Salmonella Typhimurium in food samples. Salmonella Typhimurium, which contaminates food products such as poultry, eggs, meat, and dairy, is one of the leading causes of foodborne illness worldwide.

This solution utilizes screen-printed electrodes combined with a lateral flow immunoassay platform using a ferri/ferrocyanide redox system. This allows direct monitoring of immunoreactions at the test zone and eliminates the need for complex labeling steps. Furthermore, as antigen–antibody binding occurs, the electrochemical signal decreases proportionally to the concentration of Salmonella Typhimurium. The sensor platform helps identify contamination by Salmonella in various foods. This detection is effective over a range of 1 to 10⁴ CFU/mL and enables quantitative detection.

Moreover, by integrating NFC-enabled potentiostat capabilities, this platform delivers a compact, wireless, and user-friendly diagnostic tool. The SIC4341 potentiostat sensor interface chip empowers next-generation food safety solutions with high sensitivity, portability, and real-time data accessibility. As a result, it is ideal for on-site screening in agriculture, food processing, and supply chain monitoring where Salmonella testing is critical.

Why Silicon Craft Products:

For anyone working on the next generation of diagnostic tools, this research is more than an academic milestone. Indeed, it is real-world proof that the SIC4341 potentiostat sensor interface chip, Silicon Craft’s commercially available NFC-enabled solution, can be the foundation of a fully working diagnostic product.

Explore the SIC4341 Potentiostat Sensor Development Kit now