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Food packaging can also eat? This is definitely not Arabian Nights 2016-9-1

        We all know that most of the grocery store, including meat, bread, cheese, snacks, are used in plastic packaging. This way not only caused a lot of waste, can not be recovered, can not be biodegradable, and plastic film can not play a role in preventing the food from decay. Also, some of the plastic is also likely to leave toxic compounds on food. How to solve this problem?



        Researchers are using cheese to test cow's cheese protein packaging film

        Tomasula and colleagues in the United States Department of agriculture developed an environmentally friendly film based on milk casein. These casein based films are 500 times more powerful than plastic films in terms of oxygen, and because they are extracted from milk, they can be biodegradable, renewable and edible.

        Some commercial edible packaging has been listed, but because it is made of starch, so there is a large number of micro pores, can not effectively block the oxygen. Milk protein based packaging bags, with smaller pores, you can form a more compact network structure, to prevent the entry of oxygen.

        In order to make the material more durable, the researchers added citrus pectin to casein. In addition, the researchers wrapped it in a protective outer layer to keep it dry and clean.

        In addition to being used as a plastic bag and a package, the casein coating can be coated on the food, such as a cereal bar and a grain strip. At present, the grain kept tight in the milk sugar. In addition to sugar, manufacturers can spray on the casein coating to prevent grain moisture. Casein coating can also be used for pizza or other food box to prevent grease with the color of the packaging, or as a lamination step paper and paperboard food boxes and plastic bag.

        The United States Food and Drug Administration (the U.S. Food & Drug Administration) banned perfluorinated substances as container coating, casein coating may become a substitute for safe, biodegradable, and casein packaging is expected to appear in the next 3 years on the shelf.

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