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Bio-based Cellulose Nanofibril-Oil Composite Films for Active Edible Barriers.

08:00 EDT 12th April 2019 | BioPortfolio

Summary of "Bio-based Cellulose Nanofibril-Oil Composite Films for Active Edible Barriers."

Low concentration oil-in-water emulsions stabilized by cellulose nanofibrils (CNFs) extracted from primary plant cell wall materials are used to prepare thin bio-based CNF-oil composite films by solvent casting. Flexible, transparent, and biodegradable composite films are obtained, with increased thermal stability (up to 300 ℃) as the oil concentration increases. Examination of the microstructure demonstrates a clear dependency on the oil content, as a multilayered structure where the oil phase is trapped between two layers of CNFs is appreciated at high oil concentrations. The embedded oil significantly influences the mechanical and wetting properties of the films, confirming their potential for use in packaging systems. Encapsulation of curcumin in the composite films leads to an increased antioxidant (up to 30% radical scavenging activity) and antimicrobial activity, inhibiting the growth of foodborne bacteria such as Escherichia coli. The resulting composite films show promising results in the field of active packaging for applications in the food, pharmaceutical and cosmetics industry.

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This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
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