The effect of hydrothermal treatment on metabolite composition of hass avocados stored in a controlled atmosphere

Rosana Chirinos, David Campos, Sofía Martínez, Sílfida Llanos, Indira Betalleluz-Pallardel, Diego García-Ríos, Romina Pedreschi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Avocado cv. Hass consumption has expanded worldwide given its nutritional, sensory, and functional attributes. In this work, avocado fruit from two harvests was subjected to hydrothermal treatment (38C for 1 h) or left untreated (control) and then stored for 30 and 50 days in a controlled atmosphere (4 kPa O2 and 6 kPa CO2 at 7C) (HTCA and CA, respectively) with subsequent ripening at ~20C. The fruit was evaluated for primary and secondary metabolites at harvest, after storage, and after reaching edible ripeness. A decrease from harvest to edible ripeness in mannoheptulose and perseitol was observed while β-sitosterol, hydrophilic and lipophilic antioxidant activity (H-AOX, L-AOX), abscisic acid, and total phenolics (composed of p-coumaric and caffeic acids such as aglycones or their derivatives) increased. HTCA fruit at edible ripeness displayed higher contents of mannoheptulose, perseitol, β-sitosterol, L-AOX, caffeic acid, and p-coumaric acid derivatives, while CA fruit presented higher contents of α-tocopherol, H-AOX, and syringic acid glycoside for both harvests and storage times. The results indicate that a hydrothermal treatment prior to CA enables fruit of high nutritional value characterized by enhanced content of phenolic compounds at edible ripeness to reach distant markets.

Original languageEnglish
Article number2427
JournalPlants
Volume10
Issue number11
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • Avocado
  • Edible ripeness
  • Harvest stages
  • Postharvest treatment
  • Primary and secondary metabolites

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