Cell wall and metabolite composition of sweet cherry fruits from two cultivars with contrasting susceptibility to surface pitting during storage

CLAUDIA VIVIANA FUENTEALBA CARRASCO, Troy Ejsmentewicz, Reinaldo Campos-Vargas, Sebastian Saa, Oscar Aliaga, Rosana Chirinos, David Campos, ROMINA PAOLA PEDRESCHI PLASENCIA

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Surface pitting is a serious postharvest physiological disorder in sweet cherries that is observed as skin depressions developed days after bruising. This work aims to compare two cultivars displaying different pitting susceptibilities (‘Kordia’: relatively resistant; ‘Sweetheart’: relatively susceptible) using metabolomics profiling and cell wall sugar characterization at different developmental stages and during postharvest storage. Kordia was significantly firmer than Sweetheart, with 1.4-fold more alcohol-insoluble residues (AIRs). A significant correlation was observed between AIRs and deformation, indicating that the highest yields of cell wall material are positively correlated with the resistance to rupture. Additionally, free D-galacturonic acid was higher in pitted Sweetheart samples, likely indicating greater pectin degradation in this susceptible cultivar. Higher contents of the p-coumaric acid derivatives L-5-oxoproline and D-galactose in Sweetheart cherries were found. The metabolic changes during storage and cell wall composition could influence the susceptibility to surface pitting.

Original languageEnglish
Article number128307
JournalFood Chemistry
Volume342
DOIs
StatePublished - 16 Apr 2021
Externally publishedYes

Keywords

  • Cell wall
  • Metabolomic
  • Prunus avium
  • Surface pitting

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