ISHS Acta Horticulturae 464: International Postharvest Science Conference Postharvest 96
VOLATILES EMITTED BY ‘ROYAL GALA’ APPLES FOLLOWING SEQUENTIAL ATMOSPHERE STORAGE |
| Authors: | J. Mattheis, D. Buchanan, J. Fellman |
| Abstract:
‘Royal Gala’ apple fruit segregated at harvest according to ground color were stored in controlled atmosphere (CA) environments in which O2 concentrations were increased monthly. After 4 months storage, periodic increases in O2 concentration resulted in treatments ranging from continuous storage at 1 kPa O2 to 4 kPa O2. CO2 in all treatments was static at 2 kPa throughout the experiment. Ester emission after 4 months CA storage plus 7 days ripening at 20°C was dependent on prior storage O2 concentration. Higher CA O2 concentrations resulted in higher ester emission after storage. Ester emissions by apples from all CA treatments were considerably lower than emissions at harvest or by regular atmosphere-stored fruit. CA storage also reduced alcohol, aldehyde and acetate emissions. Loss of fruit firmness and titratable acidity increased with higher storage O2 concentrations. | |
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