Researchers at Koc University in Türkiye have developed a tiny sensor that monitors the freshness of protein-rich foods like meat, chicken, and fish in real time and sends the data to the user's smartphone.
Weighing approximately 2g and measuring 2cm² , the sensor is made of a synthetic polymer, laminated onto electrodes that use capacitive sensing to detect bioamines produced by protein-rich foods. The sensor utilizes Near Field Communication (NFC) technology, with a chip that connects to a smartphone, transmitting wireless measurements in real time via an antenna. This chip receives power when an NFC-compatible smartphone is placed near the sensor.
Researchers tested their sensor on packaged chicken breasts and ribs under different conditions: in the freezer, in the refrigerator, and at room temperature. Over three days, the capacitance of the sensor tracking samples at room temperature increased, indicating that bioactive amines were being released from the meat as it spoiled. The researchers said their sensor is easy to use, inexpensive, and allows for continuous monitoring of protein-rich foods on supermarket shelves or at home.
LAM DIEN
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