Antimicrobial nanocomposite films based on MOF-embedded copper nanoclusters for fruit preservation

. Processed into a polyvinyl alcohol film, it shows excellent flexibility, strength, and biocompatibility. In practical tests on cherry tomatoes, the film effectively inhibited MDR bacteria on surfaces, reduced weight loss to <6% (control >25%), and preserved freshness over 7 days. This work offers a high-performance, sustainable strategy for next-generation active food packaging to combat spoilage and antimicrobial resistance.