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Dairy-Based Food Packaging Wraps Offer Green Alternative To Polymers

January 25, 2010: 10:51 AM EST
Most food packaging today is made of multilayer films – thin, continuous sheets of synthetic, petroleum-based polymers – the manufacturing of which contributes to the world’s waste disposal problem. Biobased packaging offers a green alternative, and one option being explored centers on dairy ingredients, according to a chapter in a new USDA book. The chapter focuses on films made from dairy proteins, especially those based on casein and whey from milk. But casein presents a challenge: while an excellent barrier to oxygen, carbon dioxide, and aromas, it is a weak barrier to moisture. So research is focused on improving casein’s water-vapor-barrier properties.
Peggy Tomasula, "Using Dairy Ingredients to Produce Edible Films and Biodegradable Packaging Materials (chapter title)", Dairy-Derived Ingredients: Food and Nutraceutical Uses (book title), January 25, 2010, © Woodhead Publishing
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