Development and characterization of EPS-modified alginate films with improved barrier, antioxidant, antimicrobial, and antibrowning capabilities
Özet
Functionally enriched calcium alginate (CA/EPS) biocomposite films incorporating exopolysaccharide (EPS) from Bacillus licheniformis WL5 were developed to delay enzymatic browning in fresh produce. FT-IR analysis confirmed strong hydrogen bonding between EPS and alginate, whereas SEM revealed a denser, fibrillar structure. Compared with neat CA films, CA/EPS films had a reduced moisture content (7.00%), solubility (21.9%), swelling ratio (35.83%), and water vapor transmission rate (23.53 g/m2 & sdot;day), indicating improved barrier properties. Mechanical testing revealed higher tensile strength and Young's modulus, whereas optical studies demonstrated increased opacity and improved UV-Vis light protection. The films exhibited strong antioxidant activity (DPPH 90.19%, ABTS 92.40%) and notable antimicrobial activity against Staphylococcus aureus and Escherichia coli, with lower MIC and MBC values. Controlled diffusion-based release of bioactive compounds was observed. Coating fresh-cut apples effectively reduced browning during cold storage, and strong polyphenol oxidase inhibition (IC50 = 17.72 mu g/mL) highlighted their potential as multifunctional active packaging materials.
Atıf için künye
Bayrak, S., & Ömeroğlu, M. A. (2026). Development and characterization of EPS-modified alginate films with improved barrier, antioxidant, antimicrobial, and antibrowning capabilities. FOOD CHEMISTRY, 513. https://doi.org/10.1016/j.foodchem.2026.149017
BibTeX
@article{bayrak2026-78824,
author = {Bayrak, SONGÜL and Ömeroğlu, Mehmet Akif},
title = {Development and characterization of EPS-modified alginate films with improved barrier, antioxidant, antimicrobial, and antibrowning capabilities},
journal = {FOOD CHEMISTRY},
year = {2026},
volume = {513},
issn = {0308-8146},
doi = {10.1016/j.foodchem.2026.149017},
url = {https://akademik.atauni.edu.tr/yayinlar/78824-development-and-characterization-of-eps-modified-alginate-films-with-improved}
}