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Development of a sustainable antimicrobial biopolymer film for preventing post-harvest food spoilage
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Scientists created a new food wrapping material made from natural ingredients (like chitosan, a substance from shellfish shells, and collagen) instead of plastic, which killed spoilage-causing bacteria and kept fruits, veggies, and meat fresh for up to three weeks. Unlike regular plastic packaging, which sheds microplastics into our food and environment, this material fully breaks down in soil within just 16 days. This could mean less food waste and less plastic pollution — both good news for the planet and for reducing our exposure to microplastics, which have been linked to potential health concerns.
Food loss and waste remain a major global challenge, with nearly one-third of all food produced annually being discarded or wasted, while conventional plastic-based packaging continues to exacerbate environmental pollution and microplastic accumulation. Here, we report the development of a biodegradable antimicrobial active packaging material by conjugating antimicrobial peptides with collagen integrated onto gallic acid grafted with chitosan. The engineered biomaterial exhibited potent antimicrobial activity against food spoilage-associated bacterial pathogens while maintaining excellent biocompatibility and edibility. Physicochemical characterization demonstrated mechanical strength, thermal stability and film forming properties highlighting its suitability for the development of food packaging applications. Notably, the material was effective in preserving the texture, colour, freshness and nutritional value of the tested fruits for up to 20 days and vegetables up to 15 days while extending the refrigerated (2-4 °C) shelf life of meat up to 24 days. In addition, the material underwent complete biodegradation in soil within 16 days, demonstrating its environmental sustainability. Collectively, this study presents a scalable approach for developing next-generation sustainable packaging materials that have the potential for enhanced food preservation, reduced post-harvest losses and mitigate plastic associated environmental burden.
More Papers Like This
An Antibacterial and Antioxidant Food Packaging Film Based on Amphiphilic Polypeptides‐Resveratrol‐Chitosan
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Researchers developed a biodegradable food packaging film made from natural materials including chitosan and resveratrol that kills bacteria and prevents food spoilage. Unlike conventional plastic packaging that breaks down into microplastics, this film is made entirely from biological materials and poses no microplastic contamination risk. This type of eco-friendly alternative could help reduce the microplastics that enter the food supply through traditional plastic packaging.
Preparation and Soil Degradation Behavior of Additive-Free Chitosan Films for Biodegradable Food Packaging
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Scientists made food wrap out of chitosan (a natural material from shrimp/crab shells) using just water and vinegar-like acid — no synthetic chemicals or plasticizers needed, which matters because those additives can raise safety questions and complicate disposal. The film fully broke down in soil within 60 days, kept apples fresher longer by reducing browning and moisture loss, and offers a promising alternative to plastic wrap that won't leave behind the microplastic pollution linked to conventional packaging.
Impacts of diverse cross-linking agents on structure, physicochemical properties of chitosan/gelatin-based multifunctional films incorporated with curcumin as potential food packaging
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Scientists created a new type of food wrapping made from natural materials (chitosan and gelatin, derived from shellfish and animal collagen) plus turmeric's active compound, curcumin, as an alternative to plastic packaging. By adding different natural binding agents, they made this biofilm stronger, better at blocking UV light, and more effective at fighting food-spoiling bacteria and adding antioxidants — all while it slowly releases its beneficial compounds over time. This matters because it offers a promising, biodegradable alternative to conventional plastic food packaging, which sheds microplastics into our food and environment.
Advancements in Chitosan–Anthocyanin Composite Films: Sustainable Food Preservation with Biodegradable Packaging
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This review covers recent progress in developing biodegradable food packaging made from chitosan (derived from shellfish) combined with anthocyanins (plant pigments), which can preserve food freshness while avoiding the microplastic contamination associated with traditional plastic packaging. These films have antibacterial and antioxidant properties and can even change color to indicate food spoilage, offering a promising alternative to single-use plastics.
Chitosan with Natural Additives as a Potential Food Packaging
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Researchers reviewed the potential of chitosan, a natural polymer derived from chitin, as a sustainable alternative to conventional plastic food packaging. Chitosan-based materials combined with natural additives show promising antimicrobial and biocompatible properties while being biodegradable. The study suggests these materials could help reduce plastic packaging waste and the associated microplastic pollution from food industry sources.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.