Nelumbo nucifera flower extract incorporated alginate/polyvinyl alcohol films as a sustainable pH indicator for active food packaging applications.
Int J Biol Macromol
; 273(Pt 2): 133170, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38880445
ABSTRACT
In recent years, there has been a growing demand for environmentally friendly smart packaging materials. Therefore, in this study, we developed an eco-friendly pH-sensitive indicator film through the solvent casting process, incorporating alginate, polyvinyl alcohol, garlic, and Nelumbo nucifera flower extract. The effect of extract on the chemical and physical properties of the film were extensively studied using various characterization techniques. XRD and FTIR reveal the strong interaction between the polymers and the extract. The incorporation of the extract influenced various parameters such as swelling behavior, water solubility, and moisture content, while also improving the film's thermal stability, biodegradability, as well as its antioxidant and antimicrobial properties. Interestingly, the film exhibited a color change in response to pH change. During shrimp storage, the film showed a visible transition from purple to green, indicating shrimp spoilage. Additionally, the film's ability to detect freshness was confirmed by measuring total volatile basic nitrogen (TVBN). These findings suggest that the PVA/alginate/garlic/Nelumbo nucifera film shows promise as an intelligent packaging material for real-time food monitoring applications.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Álcool de Polivinil
/
Extratos Vegetais
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Embalagem de Alimentos
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Nelumbo
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Flores
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Alginatos
Limite:
Animals
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article