Antimicrobial activity of pomegranate peel extracts as affected by cultivar

Ema C. Rosas-Burgos, Armando Burgos-Hernández, Luis Noguera-Artiaga, Miroslava Kačániová, Francisca Hernández-García, José L. Cárdenas-López, Ángel A. Carbonell-Barrachina*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

120 Scopus citations

Abstract

BACKGROUND: Some studies have reported that different parts of the pomegranate fruit, especially the peel, may act as potential antimicrobial agents and thus might be proposed as a safe natural alternative to synthetic antimicrobial agents. The high tannin content, especially punicalagin, found in pomegranate extracts, has been reported as the main compound responsible for such antimicrobial activity. Because the pomegranate peel chemical composition may vary with the type of cultivar (sweet, sour–sweet and sour), pomegranates may also differ with respect to their antimicrobial capacity. RESULTS: The extract from PTO8 pomegranate cultivar peel had the highest antimicrobial activity, as well as the highest punicalagins (α and β) and ellagic acid concentrations. In the results obtained from both antibacterial and antifungal activity studies, the sour–sweet pomegranate cultivar PTO8 showed the best antimicrobial activity, and the highest ellagic acid concentrations. CONCLUSION: The results of the present study suggest that ellagic acid content has a significant influence on the antimicrobial activity of the pomegranate extracts investigated. The pomegranate peel of the PTO8 cultivar is a good source of antifungal and antibacterial compounds, and may represent an alternative to antimicrobial agents of synthetic origin.

Original languageEnglish
Pages (from-to)802-810
Number of pages9
JournalJournal of the Science of Food and Agriculture
Volume97
Issue number3
DOIs
StatePublished - 1 Feb 2017

Bibliographical note

Publisher Copyright:
© 2016 Society of Chemical Industry

Keywords

  • antibacterial activity
  • antifungal activity
  • minimum inhibitory concentration
  • radial growth inhibition
  • sour–sweet pomegranate cultivars

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