Impact of Pseudomonas graminis strain CPA-7 on respiration and ethylene production in fresh-cut ‘Golden delicious’ apple according to the maturity stage and the preservation strategy
Visualitza/Obre
Autor/a
Collazo, Cyrelys
Giné-Bordonaba, Jordi
Aguiló-Aguayo, Ingrid
Povedano, Ismael
Ubach, Dolors
Viñas, Inmaculada
Data de publicació
2018-05-25ISSN
0925-5214
Resum
The effect of the biocontrol agent (BCA) Pseudomonas graminis CPA-7 on the accumulation of CO2 and ethylene (C2H4) in fresh-cut apples at two maturity stages was evaluated in refrigerated conditions. Factors involved in the preservation strategy applied upon commercial conditions such as the antioxidant (AOX) treatment and the storage system were included in the analysis. Regardless of the maturity stage, the BCA reduced C2H4 levels within the MAP atmosphere in AOX-untreated apples wedges, by 29 and 43% in immature and mature apples, respectively. Nevertheless, the addition of ascorbate as antioxidant counteracted this effect. In vitro tests suggested that the reduction of C2H4 levels was not associated to the uptake of this molecule by CPA-7. Interestingly, in non-inoculated samples AOX treatment showed contradictory effects on C2H4 production in MAP conditions by significantly reducing C2H4 levels in immature apples (by 23%) while increasing it in mature ones (by 40%). Similarly, CPA-7 had opposite effects on the CO2 accumulation pattern depending on the storage system or the fruit maturity stage. In this sense, CPA-7 was associated to a higher fruit respiratory activity at an advanced maturity stage yet without inducing the fruit fermentative metabolism or altering the fruit quality during a week of refrigerated storage. Overall, these results show that CPA-7 may contribute to the maintenance of the microbiological and physicochemical quality of fresh-cut apple by modulating the fruit ethylene production and/or respiration.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Pàgines
32
Publicat per
Elsevier
Publicat a
Postharvest Biology and Technology
Citació
Collazo, Cyrelys, Jordi Giné-Bordonaba, Ingrid Aguiló-Aguayo, Ismael Povedano, Dolors Ubach, and Inmaculada Viñas. 2018. "Impact Of Pseudomonas Graminis Strain CPA-7 On Respiration And Ethylene Production In Fresh-Cut ‘Golden Delicious’ Apple According To The Maturity Stage And The Preservation Strategy". Postharvest Biology And Technology 144: 36-45. Elsevier BV. doi:10.1016/j.postharvbio.2018.05.010.
Programa
Postcollita
Aquest element apareix en la col·lecció o col·leccions següent(s)
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