Quality of 'Oso Grande' strawberries is affected by O-2, CO2 and N2O concentrations during controlled atmosphere storage
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Data
2019-04-01
Autores
Cunha Junior, Luis Carlos
Ascari Morgado, Cristiane Maria
Jacomino, Angelo Pedro
Trevisan, Marcos Jose
Martins Parisi, Marise Cagnin
Correa, Gilmarcos de Carvalho
Almeida Teixeira, Gustavo Henrique de [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Inst Agronomico
Resumo
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-2, CO2, and N2O levels on 'Oso Grande' strawberries stored at 10 degrees C, under controlled atmosphere (CA). Five different gas mixtures were used: 0.03 kPa CO2 + 20 kPa O-2, 80 kPa N2O + 20 kPa O-2, 90 kPa O-2 + 10 kPa N-2, 60 kPa O-2 + 40 kPa CO2, and 20 kPa O-2 +20 kPa CO2 + 60 kPa N2O. The lowest incidence of postharvest decay was observed with treatment 20 kPa O-2 + 20 kPa CO2 + 60 kPa N2O, followed by 80 kPa N2O + 20 kPa O-2 and 90 kPa O-2 + 10 kPa N-2. The treatment 60 kPa O-2 + 40 kPa CO2 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 N2O +20 kPa O-2 for 14 days more closely resembled the quality of fresh fruit at the moment of harvest. 'Oso Grande' strawberries stored at 10 degrees C under 80 kPa N2O + 20 kPa O-2 and 90 kPa O-2 + 10 kPa N-2 were in better conditions, with no metabolic alterations, showing that these are the ideal storage conditions.
Descrição
Palavras-chave
Fragaria x ananassa Duch, acetaldehyde, ethanol, multivariate analysis
Como citar
Bragantia. Campinas: Inst Agronomico, v. 78, n. 2, p. 274-283, 2019.