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Lotus-leaf-bioinspired biomass-based films for intelligent /active packaging
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Researchers developed a lotus-leaf-inspired food packaging film from gelatin, bacterial cellulose, and curcumin that is fully biodegradable and microplastic-free, with built-in pH-sensitive freshness sensing and anti-counterfeiting fluorescence, and demonstrated it extended pork shelf life by five days — outperforming conventional PE film.
The integration of intelligent and active packaging strategies with biodegradable naturally-derived materials represents a significant breakthrough in perennial food-safety/-quality challenges including food-spoilage/-waste/-counterfeiting and packaging-caused environmental pollutions. In this study, we developed a lotus-leaf-inspired, all-natural biomass-based intelligent/active packaging material (gelatin-bacterial cellulose-curcumin composite, L-GBC) using gelatin, bacterial cellulose, and curcumin as functional building blocks. This innovative material integrates multiple functionalities including visual freshness monitoring, anti-counterfeiting authentication, and food preservation in a robust system. Due to the on-demand constructed lotus-leaf-like papillary structure, L-GBC possesses significantly improved hydrophobicity and water-vapor barrier properties, fundamentally eradicating the scientific issue that the hydrophilic natures of the base-materials immensely restrict the packaging applications. Meanwhile, L-GBC exhibits prominent microplastic-free, mechanical properties and accessorial multifunctional active food-preservation characteristics, including ascendant antioxidant capacity, UV-shielding, biodegradability, and antibacterial properties. Furthermore, L-GBC demonstrates high pH sensitivity and fluorescence effects, which can be applied to intelligently detect biogenic amines released during protein-rich food spoilage, enabling real-time monitoring of food freshness and anti-counterfeiting functions. Comprehensive application experiment substantiates that L-GBC effectively maintains pork's freshness for five days, exceeding that of traditional PE film by two days. This study presents the promising potential of new-generation microplastic-free food packaging materials, exhibiting comprehensive versatility, representing a significant advancement in intelligent and active packaging technology.
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Bio-based smart materials for fish product packaging: a review
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This review examined bio-based smart packaging materials for fish products, covering polysaccharides, proteins, polyhydroxyalkanoates, polylactic acids, pullulan, and xanthan gum composites loaded with nanofillers and pH- and temperature-sensitive bioactive molecules such as anthocyanins, curcumin, and clove oil. The authors concluded that bio-based materials with integrated freshness indicators offer viable sustainable alternatives to petroleum-based plastic packaging that generates persistent environmental microplastics.
Synergistic effects of anthocyanins and essential oils in biopolymer based active and intelligent food packaging for sustainable applications
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Scientists are developing smart food packaging made from plant-based materials instead of plastic, combining natural pigments (from fruits and veggies) with essential oils to keep food fresher longer while also changing color to warn you if food has spoiled. This review paper summarizes existing research showing these plant-based films fight bacteria and spoilage better when the two ingredients are combined, offering a promising eco-friendly alternative to plastic packaging that could reduce both food waste and plastic pollution.
Intelligent Biopolymer-Based Films: Promising New Solutions for Food Packaging Applications
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This review examines next-generation biopolymer films embedded with smart indicators—such as pH-sensitive dyes, gas sensors, and antimicrobial agents—that can actively monitor food freshness and extend shelf life. These intelligent packaging materials offer a biodegradable alternative to conventional petroleum-based plastics while adding functional value through real-time spoilage detection. The authors assess current material performance, scalability challenges, and the regulatory landscape for commercial adoption.
Biodegradable polymer-based active packaging: role of functional additives in enhancing food quality and sustainability
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Scientists are developing food packaging made from plant-based, biodegradable materials mixed with natural ingredients (like antioxidants and antimicrobial compounds) that can keep food fresher longer while breaking down instead of piling up as plastic waste. This review paper summarizes existing research, showing these "smart" packages can even include sensors that tell you if your food is spoiling, a promising step toward cutting both food waste and plastic pollution, which matters since traditional plastic packaging is linked to microplastic contamination in our food and bodies.
Upcycling grapefruit peel pectin, curcumin, and Zn-CD into a high-performance biodegradable film for meat preservation and colorimetric freshness tracking
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Scientists turned grapefruit peel (usually thrown away) into a smart food wrap that keeps meat fresher longer and changes color as a built-in "freshness alarm," turning yellow to reddish-brown when pork starts to spoil. Unlike regular plastic wrap, this film breaks down naturally in soil, offering a step toward cutting plastic waste and the microplastics that come with it, while also helping shoppers spot spoiled meat before it becomes a food safety risk.
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