Jiangsu University Reports Findings in Food Chemistry (A paper-based ratiometric fluorescent sensor for NH3 detection in gaseous phase: Real-time monitoring of chilled chicken freshness).

A recent study conducted by researchers at Jiangsu University in China has developed a paper-based sensor that can detect ammonia (NH3) concentration in real-time and monitor the freshness of chilled chicken. The sensor, which utilizes a ratiometric fluorescent probe, showed a good linear relationship with NH3 concentration and had a limit of detection of 288 nM. By observing observable shifts in fluorescence color, the sensor can indicate the freshness of chicken breast refrigerated at 4 °C. This research provides a simplified and accurate method for monitoring meat freshness. [Extracted from the article]