Warning packaging

This kind of packaging can remind people if the food they have installed is deteriorating. The bag consists of three separate layers: the inner layer is a porous layer, which is in direct contact with food. If the food is infected with certain bacteria that can cause disease, these bacteria can penetrate the porous layer and reach the middle layer. . The middle layer contains a nutritious gel that reacts with an antibody in the gel to change color. The bacteria then enters the outermost layer, interacts with another antibody on the surface, and spreads out in an X shape, allowing the consumer to discover that the food has deteriorated.

Australian packaging material expert Roon Ey has developed a new type of electronic warning packaging. When perishable foods are heated at high temperatures and their quality is no longer guaranteed, the sensor strips on the packaging change color and the electronic chip alerts. Electronic packaging technology can also help food exporters who lack food preservation measures. Companies can use satellites to track and monitor the temperature changes of foods destined for overseas shipments during transportation so that their products can be exported safely abroad.