New edible plastic made from milk protein

Researchers in the US have developed an edible, biodegradable packaging film, made from the milk protein casein. Bloomberg reports that the casein-based film is up to 500 times better than plastic at keeping oxygen away from food. It’s also more effective than current edible packaging materials made from starch and protects food products that are sensitive to light. Flavourings, vitamins, and other additives can be used to make the packaging, and the food it surrounds, tastier and more nutrit