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Bacterial Cellulose Spheres that Encapsulate Solid Materials

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Active Chitosan Films Enriched with Yerba Mate Kombucha Infusion: Formulation and Characterization.

Celeste Cottet^1,2, Pamela A Kikot^2,3, Matías L Nobile^2,4

¹Laboratory of Obtention, Modification, Characterization and Evaluation of Materials (LOMCEM), Department of Science and Technology, National University of Quilmes, Bernal B1876BXD, Argentina.

International Journal of Molecular Sciences

|June 26, 2026

Summary

This summary is machine-generated.

This study developed sustainable chitosan films using yerba mate kombucha infusion (YMK-I). The resulting bio-based packaging materials exhibit potent antioxidant and antimicrobial properties, offering a promising alternative to synthetic plastics.

Keywords:

active packaging antioxidant materials bio-based materials food contact materials natural plasticization

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Area of Science:

Materials Science
Food Science
Biotechnology

Background:

Growing demand for sustainable packaging alternatives to synthetic plastics.
Chitosan as a versatile biopolymer for active packaging applications.
Yerba mate kombucha infusion (YMK-I) as a source of bioactive compounds.

Purpose of the Study:

To develop and characterize chitosan-based films incorporating YMK-I.
To evaluate the physicochemical, antioxidant, and antimicrobial properties of these novel films.
To assess the potential of YMK-I as a solvent and functional additive in chitosan films.

Main Methods:

Preparation of chitosan films using varying concentrations of YMK-I as a solvent.
Characterization using rheology, FTIR-ATR, and thermal analyses (DSC/TGA).
Assessment of antioxidant activity (radical scavenging) and antimicrobial efficacy against key foodborne pathogens (E. coli, S. aureus).

Main Results:

YMK-I demonstrated effective solvent properties for chitosan film formation.
Films showed significant antioxidant activity (>85% RSA) and potent antimicrobial effects (>98% inhibition).
Incorporation of YMK-I enhanced film flexibility and altered thermal properties.

Conclusions:

Chitosan-YMK-I films are multifunctional bio-based materials with promising active packaging potential.
The developed films offer a sustainable alternative to conventional plastics.
These materials show excellent antioxidant and antimicrobial capabilities for food preservation applications.