Background
Reducing food spoilage and waste is an important sustainability goal, and active food packaging (AP) provides strategies to extend shelf life by controlling gaseous and volatile compounds. Cyclodextrin-based metal–organic frameworks (CD-MOFs) allow the combination of the inclusion complexation ability of cyclodextrins with the high porosity and tunable structure of MOFs, which are considered promising carriers for active compounds.
Scope and approach
This study aimed to investigate the potential usefulness of CD-MOFs in AP systems. Their performance in the adsorption, encapsulation, and controlled release of gaseous and volatile compounds was assessed and compared with conventional materials and other MOF-based carriers. The key challenges were outlined along with future research directions.
Key findings and conclusion
CD-MOFs tend to exhibit strong gas adsorption capacity for ethylene and carbon dioxide, high loading efficiency for volatile antimicrobials, and adjustable release behaviors under controlled humidity or temperature. When incorporated into films or electrospun fibers, they provide more stable application formats suitable for indirect contact with food. However, their long-term stability under storage conditions, the definition of functional release endpoints, and the quantitative relationship between the release percentage and preservation effect have not been sufficiently addressed. The scalable green synthesis routes and regulatory validation through migration and toxicological testing are considered critical steps. With progress in sustainable production and safety assessment, CD-MOFs have been shown to have a clear potential to advance next-generation AP technologies.
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