Smart plastic bags help distinguish expired goods

Housewives often face the dilemma of not knowing what food they buy for long periods of time or how to find out if the food is still fresh.

Scientists at the University of Strathclyde (UK) have researched a smart plastic bag. The birth of smart plastic bags will help solve the headache problem. Smart plastic bags when detecting expired foods will be discolored and moreover have the function of ensuring the freshness of food.

According to scientists, if foods such as meat, fish or greens are over-used or left out of the refrigerator for long periods of time, the freshness will be lost.

However, these foods, if packaged with smart plastic bags, are reduced to a certain limit when the freshness is reduced, the plastic bags will change color and remind us to use early or must be stored in a refrigerator.

In addition, smart plastic bags function as " air conditioners ", thereby helping to prolong the storage time of food.

The " air conditioning " function of smart plastic bags reduces the amount of oxygen inside the sealed bag, which is loaded with nitrogen and carbon dioxide to reduce the natural breakdown of the food.

It is expected that smart plastic bags will be available in the market within the next 2 years