An Antibacterial and Antioxidant Food Packaging Film Based on Amphiphilic Polypeptides-Resveratrol-Chitosan.

Antimicrobial and antioxidant packaging films play a crucial role in extending food shelf life, maintaining quality, and enhancing safety by inhibiting microbial growth and slowing oxidation processes. However, most commercial preservative films suffer from limited antimicrobial and antioxidant properties. Moreover, these films are made from petroleum-based materials that degrade into microplastics, resulting in environmental contamination and potential health risks for humans.

In Situ Preparation of Chlorine-Regenerable Antimicrobial Polymer Molecular Sieve Membranes.

Microbial contamination has profoundly impacted human health, and the effective eradication of widespread microbial issues is essential for addressing serious hygiene concerns. Taking polystyrene (PS) membrane as an example, we herein developed report a robust strategy for the in situ preparation of chlorine-regenerable antimicrobial polymer molecular sieve membranes through combining post-crosslinking and nucleophilic substitution reaction. The cross-linking PS membranes underwent a reaction with 5,5-dimethylhydantoin (DMH), leading to the formation of polymeric -halamine precursors (PS-DMH).

Silver oxide decorated urchin-like microporous organic polymer composites as versatile antibacterial organic coating materials.

Microporous organic polymers (MOPs) and metal oxide hybrid composites are considered valuable coating materials because of their versatility derived from the synergistic combination of MOPs' inherent dispersibility and the distinctive properties of metal oxides. In this study, we present the synthesis of sea-urchin-like MOPs hybridised with silver oxide nanoparticles (AgO NPs) to fabricate antibacterial composites suitable for potential antibacterial coating applications. AgO NP-decorated urchin-like MOPs (AgO@UMOPs) were synthesised by employing a combination of two methods: a one-pot Lewis acid-base interaction-mediated self-assembly and a straightforward impregnation process.