ArticleBiomolecules2026
The Antioxidant and Antibacterial Properties of Honeycomb-Structured Polylactic Acid/Astaxanthin@ZIF-8 Bio-Composite Film Applied in Beef Preservation.
Article in Biomolecules, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Food spoilage is mainly driven by lipid oxidation and microbial proliferation. To counteract these challenges, multifunctional protective films have emerged as effective solutions for suppressing both reactions. In this work, biodegradable polylactic acid (PLA) was selected as the polymer matrix to fabricate composite films. Colloidal ZIF-8 nanoparticles loaded with the natural antioxidant astaxanthin (AST) were mixed with PLA. By precisely controlling temperature and humidity during the solution-casting process, a honeycomb-structured PLA/AST@ZIF-8 composite film was successfully prepared. The structural and physico-chemical properties of the as-prepared film were systematically characterized by FE-SEM, FTIR, Raman, XRD, and TGA. The results confirm the formation of a well-defined honeycomb morphology, with AST uniformly dispersed throughout the PLA matrix. Importantly, films with AST content above 2.0% exhibit weak antibacterial properties. Practical application tests for preserving beef tenderloin demonstrate that the film provides excellent antioxidant and antibacterial effects. On the seventh day, the water loss, pH,
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