Partial identification of antifungal compounds from Punica granatum peel extracts

Ira Glazer, Segula Masaphy, Prosper Marciano, Igal Bar-Ilan, Doron Holland, Zohar Kerem, Rachel Amir*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against six rot fungi that cause fruit and vegetable decay during storage. The growth rates of Alternaria alternata, Stemphylium botryosum, and Fusarium spp. were significantly inhibited by the extracts. The growth rates were negatively correlated with the levels of total polyphenolic compounds in the extract and particularly with punicalagins, the major ellagitannins in pomegranate peels. Ellagitannins were also found to be the main compounds in the bioactive fractions using bioautograms, and punicalagins were identified as the main bioactive compounds using chromatographic separation. These results suggest that ellagitannins, and more specifically punicalagins, which are the dominant compounds in pomegranate peels, may be used as a control agent of storage diseases and to reduce the use of synthetic fungicides.

Original languageAmerican English
Pages (from-to)4841-4848
Number of pages8
JournalJournal of Agricultural and Food Chemistry
Volume60
Issue number19
DOIs
StatePublished - 16 May 2012

Keywords

  • Punica granatum L.
  • antifungal activity
  • hydrolyzable tannins
  • polyphenol
  • pomegranate
  • punicalagin

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