A team of researchers at the Korea Institute of Science and Technology (South Korea) led by Dr. Yonghee Yong has developed a laser system for refrigerators that can detect spoiled food.
The system consists of a laser that creates light and a camera that takes 30 pictures per second. If characteristic moving spots appear on food at the time of laser flashes, this means the presence of bacteria. The method allows you to identify even such dangerous bacteria as salmonella or E. coli.
The device was tested on chicken breasts purchased from a supermarket and previously infected with E. coli bacilli. The system clearly recorded which specific locations were infected and to what extent. However, not all types of bacteria can be identified. The system does not yet have access to noroviruses that do not respond to the laser.
Researchers do not lose hope that the system they have developed will be in demand when creating new models of household refrigerators.