Characterization of biochemical compounds in different accessions of pomegranate (Punica granatum L.) peels in Iraq

Document Type : Original Article

Authors

1 Department of Biology, college of Education, University of Garmian

2 Department of Biology, College of Education, University of Garmian, Kurdistan Regional Government, Iraq

Abstract

The polyphenol complex of pomegranate peel (Punica granatum L.), which makes up half of the pomegranate fruit are of importance due to their roles in disease prevention. Although several studies examined the phenolic compounds in pomegranate peel, there is no studies on this plant part in Iraq using HPLC. This study was carried out to investigate the content of these bioactive compounds in pomegranate peels of 27 accessions collected from five different locations in the North and Middle of Iraq. In total, ten polyphenolic agents, including Gallic acid, Ellagic acid, Hydroxybenzoic acid, Caffeic acid, Luteolin, Quercetin, catechin, Rutin, Punicalins and punicalagin were detected in the ethanolic extracts of the respective accessions using HPLC technique. Results showed that the range of concentrations (µg/ml) of the phenolic compounds, namely gallic acid (80.6-170.24), ellagic acid (50.32-134.36), punicalagin (5.2-130.32), luteolin (20-122.32), catechin (50.2-121), rutin (41-102.36), hydrobenzoic acid (26.2-101.96), quercetin (27.92-94.36), punicalins (29.92-90.36) and caffeic acid (38.32-81) were significantly varied in the selected accessions. The highest concentrations of all the respective phenolic compounds were characterized in the accession number 27, which was collected from Shahraban. This accession might be a valuable source for pharmaceutical products, specifically anti-cancers.

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