What happens inside fruit while it travels thousands of kilometres to the consumer

While fruit travels from the field to the supermarket shelf, its external appearance may remain stable, but inside, intense physiological activity continues. The postharvest phase is far from a period of inactivity: fruit keeps respiring, regulating hormonal signals, consuming reserves and responding to the stress imposed by cold storage, time and global logistics.

During weeks —and sometimes months— spent in cold rooms, maritime containers or logistics platforms, key processes such as ripening, senescence and oxidative stress come into play. Continuous respiration leads to a gradual consumption of sugars and organic acids, while imbalances in the production of reactive oxygen species can accelerate cellular deterioration, affecting firmness, flavour and commercial life.

Cold preserves, but it also stresses

Cold storage remains the main preservation tool, but it is not without side effects. Suboptimal temperatures or prolonged storage periods can disrupt fruit metabolism and trigger physiological disorders such as chilling injury in sensitive species. At an internal level, these processes translate into metabolic changes that appear long before visible symptoms such as browning, texture loss or the development of fermentative off-flavours.

The accumulation of undesirable volatile compounds, such as ethanol or acetaldehyde, is one of the clearest indicators that physiological balance has been compromised. These changes not only affect sensory quality but also limit the fruit’s ability to withstand the final stages of the logistics chain and retail display.

Postharvest starts before harvest

Recent research reinforces a key message for the sector: fruit behaviour during transport and storage is largely defined in the field. Preharvest factors such as irrigation management, nutritional status or the application of signalling molecules directly influence antioxidant capacity and resistance to postharvest stress.

Fruit with better redox balance and more efficient hormonal regulation is better prepared to face long-distance transport and demanding logistical conditions. This integrated vision links production and postharvest as parts of the same system, where agronomic decisions directly condition the final quality delivered to consumers.

For the horticultural sector, this approach highlights the strategic importance of postharvest management. It is no longer just about maintaining a constant temperature, but about understanding the physiological processes occurring during the fruit’s journey and supporting them with advanced tools —sensors, predictive models and preservation technologies— to reduce losses and ensure quality at destination.

In a context of distant markets, increasing regulatory pressure and growing sustainability demands, understanding what happens inside fruit while it travels thousands of kilometres becomes a competitive advantage. Postharvest is increasingly the stage where the success —or failure— of the entire supply chain is decided.