Fish skin, a by-product, is an excellent source of collagen. Composite films made from fish skin collagen, chitosan, and cinnamon essential oil are known for their exceptional mechanical properties, barrier ability, and antimicrobial activity. In a study conducted at Liaoning University, collagen was extracted from the skin of Atlantic cod (Gadus morhua), and a composite film of fish skin collagen, chitosan, and cinnamon essential oil was prepared through casting. These films were found to be promising for applications in food packaging and storage. Additionally, the composite films showed potential antioxidant capacity, making them promising green bioactive films for protecting nutraceutical products.
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