U.S. Develops Food Packaging Film

Frederick F. Shi, a chemist at the Southern Regional Research Center at the US Bureau of Agricultural Research, developed a protein-containing edible food packaging film using soybean as the main raw material. It can be eaten together with the packaged food, not only nutritious, but will not cause environmental pollution.
The process of producing edible food packaging films containing soybeans as the main raw material is: soaking soybeans first, grinding them after their tissues are softened, and then distributing proteins from the grinded soybeans and water-mixed slurry, Two protein powders are thus obtained; one is a soy extract containing more than 90% protein; the other is a soy concentrate containing approximately 70% protein. These protein powders are then mixed with various components such as wheat starch and edible oil, and an edible edible food packaging film containing protein may be prepared by using an enzyme or other treatment agent.
It is said that in addition to being able to eat directly, the food packaging film can also maintain moisture and prevent oxygen from entering, prolonging the food preservation period.