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Quality of 'Oso Grande' strawberries is affected by O2, CO2 and N2O concentrations during controlled atmosphere storage.
- Source :
- Bragantia; Apr-Jun2019, Vol. 78 Issue 2, p274-283, 10p
- Publication Year :
- 2019
-
Abstract
- Consumers around the world appreciate strawberries for their taste. They have low calories and high concentrations of soluble fibers, vitamin C and flavonoids. This paper verified the combined effect of O<subscript>2</subscript>, CO<subscript>2</subscript>, and N<subscript>2</subscript>O levels on 'Oso Grande' strawberries stored at 10° C, under controlled atmosphere (CA). Five different gas mixtures were used: 0.03 kPa CO<subscript>2</subscript> + 20 kPa O<subscript>2</subscript>, 80 kPa N<subscript>2</subscript>O + 20 kPa O<subscript>2</subscript>, 90 kPa O<subscript>2</subscript> + 10 kPa N<subscript>2</subscript>, 60 kPa O<subscript>2</subscript> + 40 kPa CO<subscript>2</subscript>, and 20 kPa O<subscript>2</subscript> + 20 kPa CO<subscript>2</subscript> + 60 kPa N<subscript>2</subscript>O. The lowest incidence of postharvest decay was observed with treatment 20 kPa O<subscript>2</subscript> + 20 kPa CO<subscript>2</subscript> + 60 kPa N<subscript>2</subscript>O, followed by 80 kPa N<subscript>2</subscript>O + 20 kPa O<subscript>2</subscript> and 90 kPa O<subscript>2</subscript> + 10 kPa N<subscript>2</subscript>. The treatment 60 kPa O<subscript>2</subscript> + 40 kPa CO<subscript>2</subscript> induced an increase in the production of acetaldehyde and ethanol, and these levels were considered inadequate for human consumption. The first factor, named senescence, displayed a positive correlation with soluble solids, luminosity, hue angle, firmness and incidence of decay. The second factor, named CA-induced injury, showed that total acidity correlated negatively with ethanol and acetaldehyde levels. Hierarchical cluster analysis indicated that strawberries stored under 80 kPa N<subscript>2</subscript>O + 20 kPa O<subscript>2</subscript> for 14 days more closely resembled the quality of fresh fruit at the moment of harvest. 'Oso Grande' strawberries stored at 10 °C under 80 kPa N<subscript>2</subscript>O + 20 kPa O<subscript>2</subscript> and 90 kPa O<subscript>2</subscript> + 10 kPa N<subscript>2</subscript> were in better conditions, with no metabolic alterations, showing that these are the ideal storage conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00068705
- Volume :
- 78
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Bragantia
- Publication Type :
- Periodical
- Accession number :
- 137279025
- Full Text :
- https://doi.org/10.1590/1678-4499.2018214