In the pursuit of food preservation and sustainable packaging, researchers have been seeking strategies that simultaneously safeguard product quality and demonstrate environmental responsibility. Faced with the vulnerability of fish oil to oxidative degradation, the fragility of bioactive compounds, and the escalating challenges of environmental pollution, a biodegradable and eco-friendly film may offer an ideal solution. This translucent active packaging film functions as a "breathable natural barrier." Constructed upon a matrix of sodium alginate and gelatin, and fortified with the antioxidant properties of anthocyanin extracts from mulberries, strawberries, roses, and other sources, it provides a protective defense for fish oil against the deleterious effects of light, oxygen, and time. Owing to its edibility and environmental biodegradability, this packaging transcends the conventional notion of waste, instead transforming into nutrients that return to the soil. This thin film fulfills the dual mission of preserving health and harmonizing with the environment. It is not merely a technological innovation in food packaging science, but also a gentle commitment to the Earth, this kind of water-light, shimmering film writing a new chapter for a sustainable future.

Food Innovation and Advances 5(1): 133−144 doi: 10.48130/fia-0026-0011