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Response of three strains of 'Gala' apples to high carbon dioxide prior to controlled atmosphere storage.

Drake, S. R.; Elfving, D. C.;

Fruit Varieties Journal Year: 1999 Vol: 53 Issue: 1 Pages: 16-21 Ref: 18 ref.

1999

บทคัดย่อ

Response of three strains of 'Gala' apples to high carbon dioxide prior to controlled atmosphere storage.

 

The postharvest fruit quality of three strains (Royal Gala, Imperial Gala and Crimson Gala) of apples was evaluated over 2 or 3 storage seasons in Washington State, USA. To determine the influence of carbon dioxide treatment on storage quality, apples were stored in normal controlled atmosphere (1% O2 and 1% CO2), or treated with 12% CO2 for 7 or 14 days prior to normal CA and evaluated after 90 or 150 days of storage. The use of 12% CO2 prior to storage helped to maintain firmness of Royal Gala apples in 1 of 3 seasons. Firmness of Imperial Gala and Crimson Gala apples was not influenced by high CO2 treatment, regardless of storage season. Other quality factors (colour, soluble solids, acidity and carbohydrates) were not influenced to the extent that high CO2would be a viable option for the quality enhancement of Gala apples during storage, regardless of strain. Use of normal CA maintained Gala apple quality for 150 days in storage. Harvesting date had a major influence on Gala apple quality. A

 delay of 1 week reduced firmness and acidity, but enhanced colour and content of sucrose, glucose and fructose in Royal Gala, Imperial Gala and Crimson Gala apples.