Cellulose nanofiber-based multifunctional composite films integrated with zinc doped-grapefruit peel-based carbon quantum dots.
Int J Biol Macromol
; 267(Pt 1): 131397, 2024 May.
Article
em En
| MEDLINE
| ID: mdl-38582479
ABSTRACT
This study aimed to develop a multifunctional active composite film to extend the shelf life of minced pork. The composite film was prepared by incorporating zinc-doped grapefruit peel-derived carbon quantum dots (Zn-GFP-CD) into a cellulose nanofiber (CNF) matrix. The resulting film significantly improved UV-blocking properties from 39.0 % to 85.7 % while maintaining the film transparency. Additionally, the CNF/Zn-GFP-CD5% composite film exhibits strong antioxidant activity with ABTS and DPPH radical scavenging activities of 99.8 % and 77.4 %, respectively. The composite film also showed excellent antibacterial activity against both Gram-negative and Gram-positive bacteria. When used in minced pork packaging, the composite films effectively inhibit bacterial growth, maintaining bacterial levels below 7 Log CFU/g after 15 days and sustaining a red color over a 21-day storage period. Additionally, a significant reduction in the lipid oxidation of the minced pork was observed. These CNF/Zn-GFP-CD composite films have a great potential for active food packaging applications to extend shelf life and maintain the visual quality of packaged meat.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Zinco
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Carbono
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Celulose
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Embalagem de Alimentos
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Citrus paradisi
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Pontos Quânticos
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Nanofibras
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article