RT Journal Article
T1 Characterization of multilayer bacterial cellulose-chitosan films loaded with grape bagasse antioxidant extract: Insights into spectral and water properties, microstructure, and antioxidant activity
A1 Cazón Díaz, Patricia
A1 Puertas Hernando, Gema Manuela
A1 Vázquez Vázquez, Manuel
K1 Chitosan
K1 Bacterial cellulose
K1 Active packaging
AB This work explores the development and characterization of composite multilayer films comprising bacterial cellulose (BC) and chitosan enriched with antioxidant compounds from grape bagasse extract (GE) and glycerol. SEM images revealed a compact structure with successful interactions between BC and chitosan, confirmed by FT-IR analysis. Equilibrium moisture content, water vapor permeability (WVP), swollen capacity, and solubility were systematically investigated, unveiling the influence of glycerol and GE concentrations. Moisture content increased with elevated glycerol and GE levels, attributed to their hydrophilic nature. WVP rose with higher concentrations of hydrophilic compounds, affecting the films' permeability. Swollen capacity decreased, and solubility increased with the addition of GE and glycerol, indicating a more compact film structure. The incorporation of GE conferred antioxidant properties to the films, as evidenced by DPPH and ABTS+ assays, and Total Phenolic Content (TPC) determination. TPC values varied from 0 to 1.75 mg GAE/g dried film, depending on GE. Fourier Transform Infrared Spectroscopy (FT-IR) highlighted polymeric associations, and UV–Vis spectra demonstrated enhanced UV-blocking properties. Overall, these multilayer films offer promising applications in food packaging, leveraging natural antioxidant sources for an enhanced functionality
PB Elsevier
SN 0141-8130
YR 2024
FD 2024
LK http://hdl.handle.net/10347/34768
UL http://hdl.handle.net/10347/34768
LA eng
NO International Journal of Biological Macromolecules, Volume 268, Part 2, 2024, 131774
NO he authors appreciate the funding support of Xunta de Galicia, within the postdoctoral fellowship granted to Patricia Cazón Díaz (No. ED481B-2021-040). Authors would like to thank the use of RIAIDT-USC analytical facilities
DS Minerva
RD 24 abr 2026