What is the purpose of having packaging on fruit and vegetables?
Packaging fulfils four principal functions: protection of physical integrity, protection against quality deterioration, ease of use, and communication. It facilitates logistics, portioning, traceability, consumer information and reduces mechanical damage during transport and handling. By influencing moisture and gas exchange, packaging can reduce water loss and slow physiological processes leading to senescence. Modern packaging technologies – e.g. modified atmosphere packaging and edible coatings − were not analysed in depth in this report.
What can happen if fruit and vegetables are not packaged?
Without packaging, certain products are more exposed to bruising, cuts, dehydration, light and ethylene from nearby produce. Mechanical damage accelerates deterioration and may favour microbial spoilage or growth of pathogens. Produce with high surface-to-volume ratios, thin epidermal layers and limited protective cuticle are particularly susceptible to wilting. Products with thicker skins or lower surface-to-volume ratios may tolerate bulk presentation with limited impact on quality.
Are there products for which packaging is particularly important or necessary?
The need for packaging is product specific. Soft fruits, stone fruits at advanced maturity, leafy greens, fresh herbs and mushrooms are especially vulnerable to injury and dehydration and are more likely to benefit from protective primary packaging. Climacteric fruits continue to ripen after harvest and produce ethylene, while certain vegetables are sensitive to ethylene exposure. Packaging, temperature control or physical separation may help manage ethylene emission from climacteric produce and protect ethylene sensitive produce.
What is the effect of consumer produce bags for loose items?
Limited direct evidence was identified. Thin consumer produce bags primarily serve practical purposes such as weighing and transport. They are not designed to provide significant mechanical protection, and any protective effect is likely indirect through reduced handling.
Are there microbiological risks associated with not having packaging?
Most contamination occurs earlier in the production chain. Conventional non-modified packaging does not eliminate intrinsic microbiological risks, and pathogen growth rates are not necessarily lower in packaged products. High humidity within packaging may even favour microbial growth. However, packaging may have indirect food safety benefits by reducing mechanical damage and handling.