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Sustainable valorization of mandarin peel waste into multifunctional cellulose/pectin/PVA films with superior mechanical and UV-blocking performance
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Researchers fabricated biodegradable films from mandarin peel waste — combining extracted cellulose and pectin with poly(vinyl alcohol) via a mild sodium carbonate pretreatment — and found the resulting material had strong mechanical properties and excellent UV-blocking performance suitable for sustainable food packaging.
We have developed multifunctional, biodegradable plastic films composed of mandarin peel byproducts and poly(vinyl alcohol) through a mild Na 2 CO 3 -mediated pretreatment process.
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Researchers optimized pectin extraction from pomelo peel waste and fabricated flexible, biodegradable pectin-chitosan-sorbitol composite films with suitable moisture and solubility properties for sustainable food packaging. Replacing petroleum-based plastics with such biopolymer films directly addresses the generation of persistent microplastic contamination from conventional packaging materials.
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Researchers reinforced polyvinyl alcohol films with alkali lignin extracted from sugarcane agricultural residue, crosslinked with food-grade sodium trimetaphosphate, and functionalized with curcumin, producing biodegradable packaging with 89% radical scavenging activity, UV shielding, and antimicrobial properties that meaningfully extended cherry tomato shelf life at ambient temperature.
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Researchers reviewed how agricultural and industrial fruit waste — including peels, seeds, and pomace — can be converted into multifunctional bio-based food packaging materials with demonstrated antimicrobial, antioxidant, and shelf-life-extending properties, while identifying scalability and regulatory alignment as key barriers to widespread adoption.
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This review summarized recent research on converting fruit and vegetable processing waste into biopolymer-based food packaging materials, covering extraction of pectin, cellulose, and starch from by-products and their performance as biodegradable packaging films.
Utilisation of agricultural waste for the development of edible film
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Researchers reviewed the use of agricultural residues — including citrus, mango, pomegranate, and potato peels — as feedstocks for biodegradable edible films, examining polysaccharide-, protein-, lipid-, and composite-based formulations alongside modern processing techniques, demonstrating that agri-waste valorization can extend food shelf life while reducing reliance on petroleum-based plastic packaging.
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