Material Selection Challenges and Application Limitations of Biodegradable Films for Fresh-Cut Produce Packaging

Abstract

Biodegradable films for fresh-cut produce packaging must provide gas exchange, moisture control, and physical protection suited to the product. This article examines material selection challenges using fresh-cut lettuce and apple slices as examples. Oxygen supply and carbon dioxide removal need to match produce respiration, while water vapour transfer must limit dehydration without allowing excessive moisture accumulation. Refrigeration affects these relationships because temperature changes influence respiration, film permeability, and condensation. Evidence from published experiments shows that improvements in one property can create limitations elsewhere. A modified film may preserve colour and firmness while increasing water loss, and a suitable film may perform poorly when seals are unreliable. Material selection should connect film properties with product quantity, package design, storage duration, and production conditions. Practical suitability depends on the performance of the complete package under its intended conditions of use.