273 PRODUCTION OF VOLATILE COMPOUNDS BY `BING' SWEET CHERRIES AFTER CONTROLLED-ATMOSPHERE STORAGE

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  • 1 USDA, ARS, 1104 N. Western Ave., Wenatchee, WA. 98801
  • 2 Dept. Plant, Soil, Entomological Sciences, University of Idaho, Moscow, ID. 83843
  • 3 Olds Station Rd., Wenatchee, WA. 98801

Sweet cherry ripening is slowed during low oxygen and/or high carbon dioxide controlled atmosphere storage. Cherry flavor can be impacted by prolonged CA storage, therefore ripening after CA and storage was evaluated including production of fruit volatile compounds. `Bing' sweet cherries were harvested at commercial maturity and stored for up to 12 weeks at 1C in air or 5% O2, with 0.1, 10, 15 or 20% CO2. Fruit quality and condition were evaluated after removal from storage plus 1 or 4 days at 20C. Changes in fruit color were slow ed by all atmosphere treatments with differences most notable after longer storage durations. Volatile synthesis changed as storage duration increased, however, treatment differences were not significant. Soluble solids content was maintained at 15 and 20% CO2, but treatment differences were significant only after longer storage durations. High CO, treatments were effective at reducing decay incidence, but residual suppression after removal from storage decreased as storage duration increased. Significant treatment effects were evident for titratable acidity retention after 8 and 12 weeks storage, however, titratable acidity significantly declined in all treatments compared to the initial concentration.

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