How does a controlled oxygen and carbon dioxide atmosphere slow fruit ripening during transport?

Controlled-atmosphere (CA) storage slows fruit ripening and deterioration by precisely regulating the levels of oxygen and carbon dioxide in the storage environment.1

In this process, oxygen levels are typically reduced while carbon dioxide levels are increased. By altering these gas concentrations, the system effectively retards the fruit's senescence—the biological aging process—and minimizes quality losses that occur during transport and storage.12

The specific atmospheric conditions can be maintained through several methods:
* Respiration management: The fruit’s own respiration generates carbon dioxide, which is then regulated using scrubbers, hydrated lime, or other removal systems.1
* Gas flushing: Facilities may use liquid nitrogen or compressed nitrogen gas to displace ambient air.1
* Catalytic conversion: Some systems convert oxygen into carbon dioxide through catalytic burning or reactions with liquid propane.1

By slowing down the metabolic rates associated with ripening, this technique allows for the extended shelf life and preservation of high-quality fruit during distribution.12