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Revista Ciência Agronômica

versão On-line ISSN 1806-6690

Resumo

STEFFENS, Cristiano André et al. Conditions of a controlled atmosphere for the storage of "Laetitia' plums treated with 1-methylcyclopropene. Rev. Ciênc. Agron. [online]. 2013, vol.44, n.4, pp.750-756. ISSN 1806-6690.  https://doi.org/10.1590/S1806-66902013000400011.

The aim of this study was to evaluate the effect of controlled-atmosphere (CA) conditions, both when combined and not with an application of 1-MCP, on the ripening and quality maintenance of "Laetitia' plums, especially on the incidence of flesh breakdown. The treatments evaluated were: T1 - 21 kPa O2 + <0.05 kPa CO2; T2 - 1 kPa O2 + 1 kPa CO2; T3 - 1 kPa O2 + 1 kPa CO2, com 1-MCP (1 µL L-1); T4 - 2 kPa O2 + 3 kPa CO2; T5 - 2 kPa O2 + 3 kPa CO2 com 1-MCP (1 µL L-1). After 60 days in storage (0.5 ± 0.1 ºC and 96 ± 2% RH) and three more days at ambient temperature (20 ± 2 ºC and 60 ± 5% RH), the fruits were assessed for the attributes: red-color index (RCI); flesh and skin colour; firmness; texture; titratable acidity; respiratory rate; ethylene-production and incidence of flesh breakdown. A tasting of the fruit was also carried out using an untrained panel of people. Storage under both of the CA conditions (1 kPa O2 + 1 kPa CO2 and 2 kPa O2 + 3 kPa CO2) delayed ripening of the "Laetitia' plums but did not inhibit the incidence of breakdown. However, the AC conditions of 1 kPa O2 + 1 kPa CO2 associated with the 1-MCP reduced the intensity of browning and produced a greater acceptability of the fruit.

Palavras-chave : Prunus salicina; Storage; 1-MCP; Ripening; Pulp breakdown.

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