Scientists develop electronic nose to detect spoiled food
University of California, Berkeley researchers have developed an electronic nose capable of detecting gases released by decomposing food products.
Sensor technology development
The research team at UC Berkeley has engineered a specialised sensing device designed to identify the specific chemical signatures emitted during food spoilage. By training the technology to recognise various volatile organic compounds, the system can distinguish between fresh and decaying items.
This method relies on the detection of gases that are naturally released as bacteria and fungi break down organic matter. The sensitivity of the sensor allows it to identify these changes even before physical signs of rot, such as mould or discolouration, become visible to the human eye.
Future consumer applications
The researchers suggest that this technology could eventually be integrated into domestic appliances. A primary application involves the development of smart refrigerators equipped with internal sensors.
Such a device would monitor the chemical composition of the air inside the fridge and provide real-time alerts to users. These notifications would inform consumers when specific items are approaching their expiration point, potentially reducing household food waste.
The technology, which was trained to recognize gases released by food, could one day be built into smart refrigerators that alert you before food goes bad.
Beyond domestic use, the ability to monitor food freshness through automated gas sensing could have implications for large-scale food logistics and supply chain management. Identifying spoilage early in the distribution process could help prevent contaminated products from reaching retail shelves.