A gas sensor detects meat spoilage and sends a signal to a nearby smartphone

In a study appearing in the American Chemical Society’s journal Nano Letters scientists from the University of Texas at Austin and Nanjing University in China have developed a wireless device that can send signals to smartphones warning consumers and food distributors when meat and other perishables have spoiled. The sensor is composed of a nanostructured, polymer-based gas sensor that can detect substances called biogenic amines (BAs), which give decomposing meat its odor. The sensors were embedded into near field communication (NFC) devices placed next to meats. After the meats had been stored for 24 hours at 86 degrees Fahrenheit, the researchers found that the gas sensors successfully detected significant amounts of BAs. When the concentration of biogenic amines is over a preset threshold, the information can be transmitted to a nearby smartphone. @ https://www.meatingplace.com/Industry/News/Details/80532

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