Effects of preharvest applications of methyl jasmonate and chitosan on postharvest decay, quality and chemical attributes of Fragaria chiloensis fruit

Food Chem. 2016 Jan 1:190:448-453. doi: 10.1016/j.foodchem.2015.05.107. Epub 2015 May 27.

Abstract

Fragaria chiloensis fruit has a short postharvest life mainly due to its rapid softening. In order to improve its postharvest life, preharvest applications of methyl jasmonate (MeJA) and chitosan were evaluated during postharvest storage at room temperature. The quality and chemical parameters, and protection against decay were evaluated at 0, 24, 48 and 72 h of storage from fruits of two subsequent picks (termed as first harvest and second harvest). In general, fruits treated with MeJA and chitosan maintained higher levels of fruit firmness, anthocyanin, and showed significant delays in decay incidence compared to control fruit. MeJA-treated fruits exhibited a greater lignin content and SSC/TA ratio, and delayed decay incidences. Instead, chitosan-treated fruits presented higher antioxidant capacity and total phenol content. In short, both the elicitors were able to increase the shelf life of fruits as evidenced by the increased levels of lignin and anthocyanin, especially of the second harvest.

Keywords: Anthocyanin; Chilean strawberry; Chitosan (PubChem CID: 71853); Elicitors; Fungal decay; Lignin; Methyl jasmonate (PubChem CID: 62388); Shelf life extension.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetates / pharmacology*
  • Anthocyanins / analysis
  • Antioxidants / analysis
  • Chitosan / pharmacology*
  • Cyclopentanes / pharmacology*
  • Fragaria / chemistry*
  • Fruit / chemistry
  • Lignin / analysis
  • Oxylipins / pharmacology*
  • Phenols / analysis

Substances

  • Acetates
  • Anthocyanins
  • Antioxidants
  • Cyclopentanes
  • Oxylipins
  • Phenols
  • Lignin
  • methyl jasmonate
  • Chitosan