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Effect of temperature during and immediately after CO2-Deastringency Treatment on Interval Flesh browning After Cold Storage Persimmon Fruit

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URI
http://hdl.handle.net/20.500.11939/6381
DOI
10.1016/j.scienta.2020.109363
URL
https://www.sciencedirect.com/science/article/abs/pii/S0304423820301916
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Author
Fathi-Najafabadi, Ayoub; Salvador, Alejandra; Navarro, Pilar; Gil, Rebeca; Besada, Cristina
Date
2020
Cita bibliográfica
Fathi-Najafabadi, A., Salvador, A., Navarro, P., Gil, R., & Besada, C. (2020). Effect of temperature during and inmediately after CO2-deastringency treatment on internal flesh browning after cold storage of persimmon fruit. Scientia Horticulturae, 268, 109363.
Abstract
Currently, a major cause of postharvest loss of ‘Rojo Brillante’ persimmon, the variety mainly cultivated in the Mediterranean Region, is “internal flesh browning” manifestation after storage or shipping at low temperature, whose causes remain unknown. ‘Rojo Brillante’ is an astringent low temperature-sensitive cultivar. Thus fruit is routinely submitted to high CO2 treatment to remove astringency, and also to 1-MCP treatment before being stored to retard flesh gelling and drastic softening, the main chilling injury symptoms. This study investigates the influence of temperature during CO2 deastringency treatment and immediately after its application on the incidence of ‘internal flesh browning’ in persimmon fruit. Our results revealed for the first time that the temperature immediately after the CO2 deastringency treatment was the main factor implied in this alteration. The fruit transferred directly to cold storage after the CO2 treatment showed ‘internal flesh browning’ after 41 storage d at 1 ºC, while a 24- hour attemperation period at 20 ºC before storage prevented this disorder from appearing. The main effect of the attemperation period was the enhanced release of CO2 from fruit after the CO2 treatment, which resulted in less acetaldehyde (AcH) accumulating after 24 h. Moreover, the temperature of the CO2 application was observed to influence ‘internal flesh browning’ severity as AcH accumulated at higher concentrations in the fruit treated at 20 ºC than at 12 ºC. Our preliminary hypothesis is that AcH can act as a precursor of reactive oxygen species that would be implied in this disorder’s development.
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