Quality and volatile emission changes of ‘Mondial Gala’ apples during on-tree maturation and postharvest storage in air or controlled atmosphere
Issue date
2008Author
Fuentes, T.
Suggested citation
Graell i Sarle, Jordi;
López Fructuoso, Mª Luisa;
Fuentes, T.;
Echeverría Cortada, Gemma;
Lara Ayala, Isabel;
.
(2008)
.
Quality and volatile emission changes of ‘Mondial Gala’ apples during on-tree maturation and postharvest storage in air or controlled atmosphere.
Food Science and Technology International, 2008, vol. 14, núm. 3, p. 285-294.
https://doi.org/10.1177/1082013208094119.
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Starch index (SI), color, firmness, titratable acidity (TA), soluble solids content (SSC), ethylene
production, and aroma volatile emission were recorded weekly during on-tree maturation of ‘Mondial
Gala’ apples. Fruit were harvested on commercial date and held for 3.5 and 6.5 months in regular
atmosphere (RA) or in three controlled atmospheres (CA) (2% O2 : 2% CO2, 1% O2 : 1% CO2 and 1%
O2 : 3% CO2). After each storage period plus 0 and 7 days at 20 8C, color, firmness, TA, SSC, aroma
volatile emission, acetaldehyde and ethanol concentrations, and sensory acceptability were evaluated. At
orchard, changes in SI, SSC, background color, and aroma volatile emission were almost concomitant or
slightly previous to the increase in ethylene production. During storage, all three CA conditions, regardless
of storage period, led to better preservation of standard quality. CA-stored fruit also received higher
acceptability scores, although aroma volatile emission was decreased in response to these storage
conditions. At the end of long storage (plus shelf life period), fruit stored in 1 : 1 atmosphere showed a good
retention of firmness and TA in comparison to the rest of CA-fruit. Fruit stored under all considered CA
conditions showed similar aroma volatile emission after 3.5 or 6.5 months of storage. Storage period had
no apparent influence on the aroma volatile emission of CA-stored apples, with the exception of fruit
stored in 2 : 2 atmosphere immediately upon removal from storage. No significant differences in sensory
acceptability were found either for fruit stored under different CA conditions during 3.5 months
immediately after transfer to 20 8C. In contrast, fruit stored in either 1 : 1 or 2 : 2 atmospheres during 6.5
months were better accepted by consumers than those stored in 1 : 3 atmosphere upon removal from cold
storage. However, these differences disappeared after 7 days of shelf-life at 20 8C.