Postharvest melatonin application attenuates browning, delays softening, and maintains the antioxidant potential of jackfruit bulbs

Food Chem. 2025 Feb 15;465(Pt 1):141957. doi: 10.1016/j.foodchem.2024.141957. Epub 2024 Nov 7.

Abstract

Although the impact of postharvest melatonin (MLT) application in extending the storage life of horticultural produce has been widely studied, its effect in jackfruit remains unknown. This investigation evaluates the influence of MLT dip application (0, 0.05, 0.1, and 0.2 mM) on browning, softening and oxidative stress in cold-stored jackfruit bulbs over a period of 20d. All MLT treatments reduced browning index and oxidative stress, while activities of browning-related enzymes were comparatively lower in the 0.1 mM MLT treatment. Treatment with 0.2 mM MLT maintained elevated levels of antioxidants as compared to control. Higher bulb firmness, total pectin and cellulose content with considerably lower activities of cell wall degrading enzymes were observed in all MLT treatments. In conclusion, MLT (0.1 and 0.2 mM) is an effective treatment for mitigating postharvest browning and oxidative stress in addition to delaying fruit softening and maintaining the antioxidant potential of cold-stored jackfruit bulbs.

Keywords: Browning; Fruit softening; Jackfruit; Melatonin; Oxidative stress; Postharvest quality.

Publication types

  • Evaluation Study

MeSH terms

  • Antioxidants* / chemistry
  • Antioxidants* / metabolism
  • Antioxidants* / pharmacology
  • Food Preservation* / methods
  • Food Storage*
  • Fraxinus / chemistry
  • Fraxinus / metabolism
  • Fruit* / chemistry
  • Fruit* / metabolism
  • Melatonin* / pharmacology
  • Oxidative Stress / drug effects
  • Plant Roots / chemistry
  • Plant Roots / metabolism

Substances

  • Melatonin
  • Antioxidants