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
MetadataShow full item record
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.
Is part ofPostharvest Biology and Technology, 2018, vol. 144, p. 36-45
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Pseudomonas graminis strain CPA-7 differentially modulates the oxidative response in fresh-cut ‘Golden delicious’ apple depending on the storage conditions Collazo Cordero, Cyrelys; Giné Bordonaba, Jordi; Aguiló-Aguayo, Ingrid; Povedano, Ismael; Bademunt, Ariadna; Viñas Almenar, Inmaculada (Elsevier, 2018)The oxidative response in fresh-cut antioxidant-treated ‘Golden delicious’ apples during chilling storage was differentially modified by the biopreservative bacterium Pseudomonas graminis CPA-7 depending on the storage ...
Studies on the biocontrol mechanisms of Pseudomonas graminis strain CPA-7 against food-borne pathogens in vitro and on fresh-cut melon Collazo Cordero, Cyrelys; Abadias i Sero, Mª Isabel; Aguiló-Aguayo, Ingrid; Alegre Vilas, Isabel; Chenoll, Empar; Viñas Almenar, Inmaculada (Elsevier, 2017)The present study was aimed at gaining insight into the mode of action of the antagonistic bacteria Pseudomonas graminis CPA-7, which has been previously identified as an effective biocontrol agent against Listeria ...
Assessing water-assisted UV-C light and its combination with peroxyacetic acid and Pseudomonas graminis CPA-7 for the inactivation and inhibition of Listeria monocytogenes and Salmonella enterica in fresh-cut 'Iceberg' lettuce and baby spinach leaves Collazo Cordero, Cyrelys; Noguera, Violeta; Aguiló-Aguayo, Ingrid; Abadias i Sero, Mª Isabel; Colás Medà, Pilar; Nicolau, Iolanda; Viñas Almenar, Inmaculada (Elsevier, 2019)The effectiveness of ultraviolet C light (UV-C) delivered in water (WUV) or in peroxyacetic acid (PAA) for theinactivation and inhibition ofL. monocytogenesandS. entericain ready-to-eat'Iceberg lettuce'and baby spinachleaves, ...