Postharvest life and flavor quality of three strawberry cultivars kept at 5 C in air or air+20 kPa CO2
C. Pelayo, S. E. Ebeler and A. A. Kader
Postharvest Biology and Technology Volume 27, Issue 2 , February 2003, Pages 171-183
2003
บทคัดย่อ
The postharvest life and flavor quality of three strawberry (Fragariaananassa D.) cultivars (Aromas, Diamante and Selva) kept at 5 °C in air or air+20 kPa CO2 for up to 15 days were investigated. ‘Diamante’ and ‘Selva’ had better flavor quality than ‘Aromas’ strawberries, as indicated by levels of titratable acidity and total soluble solids, organic acids, sugars and some aroma compounds and by a consumer preference test. Flesh firmness was maintained in ‘Aromas’ and increased in ‘Diamante’ and ‘Selva’ strawberries during storage at 5 °C in both air and air+20 kPa CO2. Fruit color was not affected by CO2 treatments. The postharvest life based on appearance was 7, 9 and 9 days for ‘Aromas’, ‘Diamante’ and ‘Selva’ fruits stored in air and it was extended by 2, 2 and 4 days, respectively, by the CO2-enriched atmosphere. However, the level and proportion of flavor components (sugars, organic acids, aroma compounds) and fermentative metabolites, as well as the results of sensory evaluations, indicated that the flavor life was shorter than postharvest life based on appearance in ‘Aromas’ fruit stored in air (5 vs. 7 days) and in CO2-stored ‘Aromas’ (7 vs. 9 days) and ‘Selva’ (11 vs. 13 days) fruit. ‘Selva’ and ‘Diamante’ strawberries retained their flavor quality during storage at 5 °C in air for 9 days and CO2-stored ‘Diamante’ fruit for 11 days.