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After being discarded, it is buried in the landfill or floats in the sea
.
Nowadays, many food packages are made of decomposable materials instead of plastic.
Scientists have even studied the use of milk protein to make food packages.
It is not only decomposable, but also edible, and it can prevent food from decay better than plastic
.
Heat-proof, moisture-proof and easy to decompose.
The milk protein food packaging developed by the United States Department of Agriculture.
The pores on the film are smaller than ordinary plastic food packaging.
It can effectively block oxygen up to 500 times and prevent food from decay and waste during transportation
.
Researchers pointed out that the food packaging made of milk protein alone is too soft and melts quickly in water.
Therefore, the addition of substances makes the film more durable, and also protects against heat and moisture
.
However, the researchers pointed out that in the research phase, the new substance still needs to be added with a plastic protective outer layer, but the amount has been greatly reduced
.
Scientists use milk protein to make food packaging, which is not only decomposable, but even edible
.