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Synthesis and characterization of polysaccharide- and protein-based edible films and application as packaging materials for fresh fish fillets
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Synthesis and characterization of polysaccharide- and protein-based edible films and application as packaging materials for fresh fish fillets
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Journal Article
Synthesis and characterization of polysaccharide- and protein-based edible films and application as packaging materials for fresh fish fillets
2024
Overview
The rising packaging industry together with global demand for sustainable production has increased the interest in developing biodegradable packaging materials. The aim of the study was to develop edible films based on pectin, gelatin, and hydroxypropyl methylcellulose and evaluate their applicability as biodegradable packaging materials for gilthead seabream fillets. Mechanical properties, water barriers, wettability of the films through contact angle measurement, optical, and UV–Vis barrier properties were evaluated for food packaging applications. The effective blend of polysaccharide and protein film-forming solutions was confirmed by the produced films with excellent optical properties, acceptable mechanical properties and adequate barriers to water vapor. The contact angle for pectin based and gelatin based films were higher than 90° indicating the hydrophobic films, while HPMC based films had contact angle lower than 90°. The produced films were tested as alternative and environmentally friendly packaging materials for gilthead seabream fillets during refrigerated storage. All tested packaging conditions resulted in similar shelf-life in packed gilthead seabream fillets (i.e. 7–8 days at 2 °C). The results showed that the developed films may reduce the use of conventional petroleum-based food packaging materials without affecting the shelf-life of fish.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
