For example, we can use edible film for prolonging the shelf life for food, for protecting food from microorganisms. The main component of edible films is starch. And we can also add some natural additives into this edible film to give food a new taste, so for example we can add spiced curry or pepper into the film. It will be great because the combination of curry and pepper is very useful in the fight against cancer. In this manner we give food new functions.