Harvested fruit and vegetables are living organisms. They maintain many of the biochemical reactions and physiological systems they operated when attached to the growing plant. They respire (breathe) by absorbing oxygen and emitting carbon dioxide and heat plus they lose water (as this can no longer be replaced from the growing plant). The harvested produce relies on it’s own sources of energy and water to survive until it’s final consumption.
Different types of fresh produce have different abilities to survive and maintain their quality. Some types have very short storage lives because they have high metabolic rates and high rates of water loss and must be kept under cool, humid conditions. Other types with low metabolic rates and low rates of water loss can be stored for long periods of time without the need for cool storage. Knowing the characteristics of the living produce can assist with decisions about managing storage and minimising deterioration prior to consumption.