Every year, the global citrus industry discards millions of tonnes of orange peels, a fragrant mountain of waste rich in pectin, essential oils and polyphenols. Most of this material ends up in landfills or low-value animal feed, even though its chemistry could serve far more ambitious purposes. A new study published in Waste and Biomass Valorization shows how this overlooked byproduct can be converted into a sophisticated biodegradable packaging film that not only protects food from oxygen and moisture but also releases antioxidant compounds over time.
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