Impact of controlled atmosphere storage conditions on storability and consumer acceptability of sweet cherries ‘Regina’
2003
Harb, J. | Streif, J. | Saquet, A.
Sweet cherries obtained from a rain-protected orchard were subjected to various controlled atmosphere storage conditions for up to seven weeks. Quality parameters responded differentially to various CA-conditions: changes in fruit firmness, sugar content and colour were mostly not significant. However, the storage conditions exerted significant impact on other parameters such as respiration rate, RQ, ATP- and ADP-concentrations. Air-stored fruits respired at significant higher rates than CA or ultra low oxygen-stored fruits. Moreover, the impact of CA-storage conditions persisted even after a conditioning period of 36 h at room temperature. The ATP and ADP concentrations of sweet cherries behaved similarly, where a combination of reduced O₂ and very high CO₂ concentration (12% or above) resulted in highly reduced ATP-concentration in the fruit tissue. A taste panel considered fruits stored under 6% CO₂ + 2% O₂ as good, although there was a strong indication that it is better to store sweet cherries for a limited time (up to five weeks) under a low O₂ concentration combined with a high CO₂ concentration (12%) or under a high O² concentration combined with a very high CO₂ (18%).
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