Edible Packaging Hygiene: A Lifecycle Framework for the Safety of Intentionally Consumed Food Packaging

Edible packaging is commonly evaluated as a material that protects food, reduces conventional packaging, and may deliver active compounds. Its intended ingestion, however, changes the hygienic endpoint: an external surface exposed during manufacture, distribution, retail, and handling can become a direct route of consumer exposure. This critical narrative review introduces Edible Packaging Hygiene (EPH), a lifecycle framework for evaluating microbiological, chemical, allergenic, and physical hazards from raw-material selection to consumption. Low water activity may prevent growth without eliminating pathogens, antimicrobial performance against food-associated targets does not establish the hygienic safety of the packaging surface, and ingestion requires assessment of both migration and the residual material itself. The framework therefore emphasizes process stabilization, prevention of post-process contamination, moisture control, distribution and retail protection, consumer handling, and verification immediately before expected consumption. A secondary-packaging paradox arises when hygienic protection requires an additional non-edible layer, potentially reducing environmental benefits; this trade-off should be assessed at whole-system level rather than inferred from material mass. Research priorities include finished-surface challenge tests, transfer studies, dynamic humidity protocols, realistic retail and consumer simulations, and integrated safety-life-cycle assessment. EPH reframes edible packaging safety around hygienic integrity at the point of consumption.