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Phenolic Constituents of Pomegranate Peels (Punica granatum L.) Cultivated in Oman

Amani S. Al-Rawahi, Giles Edwards, Mohammed Al-Sibani, Ghanim Al-Thani, Ahmed S. Al-Harrasi, Mohammed Shafiur Rahman

European Journal of Medicinal Plants · pp. 315–331 · Published 27 Dec 2013

10.9734/EJMP/2014/6417

Abstract

Aims: This study was undertaken to analyze total phenolics and total flavonoids contents; and total antioxidant capacity of pomegranate peel extract and to identify the major functional components in the extract. Study Design: The extract was subjected to ESI-MS/MS. Place and Duration of Study: Department of Food Science and Nutrition, Sultan Qaboos University and DARIS Research Center, University of Nizwa, between December 2011 and August 2012. Methodology: Pomegranate peel extract was analyzed using a Waters Quattro Premier XE tandem quadrupole mass spectrometer (Waters Corporation, Manchester, UK) equipped with electro-spray ionization (ESI) source. Instrument control and data acquisition were performed using Mass Lynx ver. 4.1 software. The instrument was calibrated for nominal resolution for MS1 and MS2 up to 1200 m/z using the sodium caesium iodide standard calibration solution. Results: Results revealed high contents of total phenolics (64.2 mg Gallic acid equivalent/ g dry solids) and total flavonoids (1.4 mg Catechin equivalent/ g dry solids) respectively. Total antioxidant capacity ranged from 42.3 – 461.2 µmolTrolox equivalent/ g dry solids. The analysis revealed the presence of 61 different polyphenols in the extract among which 12 hydroxycinnamic acids, 14 hydrolysable tannins, 9 hydroxybenzoic acids, 5 hydroxybutanedioic acids, 11 hydroxy-cyclohexanecarboxylic acids and 8 hydroxyphenyls. Major compounds were tannins and flavonoids such as; illogic acid, gallic acids, punicalin, and punicalagin. Conclusion: A wide variety of phytochemicals present in pomegranate peel extract were identified. These functional compounds in pomegranate peels could be utilized by the food industry and pharma/nutraceutical’s industry. Further work should be done to isolate and quantify major functional compounds of pomegranate peels such as ellagic acid.  

Antioxidant activity flavonoids tannins phenolic acids pomegranate peel

References (36)

  1. 1 Colorimetry of Total Phenolics with Phosphomolybdic-Phosphotungstic Acid Reagents [DOI]
  2. 2 The determination of flavonoid contents in mulberry and their scavenging effects on superoxide radicals [DOI]
  3. 3 Antioxidant Activity of Pomegranate Juice and Its Relationship with Phenolic Composition and Processing [DOI]
  4. 4 Polyphenols: antioxidants and beyond [DOI]
  5. 5 Comparative Evaluation of Various Total Antioxidant Capacity Assays Applied to Phenolic Compounds with the CUPRAC Assay [DOI]
  6. 6 Potential toxicity of flavonoids and other dietary phenolics: significance for their chemopreventive and anticancer properties [DOI]
  7. 7 Evaluation of antioxidant properties of pomegranate peel extract in comparison with pomegranate pulp extract [DOI]
  8. 8 Advanced Nutrition and Human Metabolism
  9. 9 Identification and quantification of phenolic compounds from pomegranate (Punica granatum L.) peel, mesocarp, aril and differently produced juices by HPLC-DAD–ESI/MSn [DOI]
  10. 10 Characterization of Anthocyanins and Proanthocyanidins in Some Cultivars ofRibes,Aronia, andSambucusand Their Antioxidant Capacity [DOI]
  11. 11 Medicinal Plants of the World
  12. 12 Pomegranate Juice, Total Pomegranate Ellagitannins, and Punicalagin Suppress Inflammatory Cell Signaling in Colon Cancer Cells [DOI]
  13. 13 Bioavailability of ellagic acid in human plasma after consumption of ellagitannins from pomegranate (Punica granatum L.) juice [DOI]
  14. 14 Antioxidant Activity, Polyphenol Content, and Related Compounds in Different Fruit Juices and Homogenates Prepared from 29 Different Pomegranate Accessions [DOI]
  15. 15 Antioxidant and Antibacterial Activities of Punica granatum Peel Extracts [DOI]
  16. 16 Evidence of anti-obesity effects of the pomegranate leaf extract in high-fat diet induced obese mice [DOI]
  17. 17 Berry anthocyanins: isolation, identification and antioxidant activities [DOI]
  18. 18 Rapid large scale purification of ellagitannins from pomegranate husk, a by-product of the commercial juice industry [DOI]
  19. 19 Assessment of Antioxidant Activity of Cane Brown Sugars by ABTS and DPPH Radical Scavenging Assays: Determination of Their Polyphenolic and Volatile Constituents [DOI]
  20. 20 Isolation and identification of a radical scavenging antioxidant – punicalagin from pith and carpellary membrane of pomegranate fruit [DOI]
  21. 21 Broad spectrum antimutagenic activity of antioxidant active fraction of Punica granatum L. peel extracts [DOI]
  22. 22 Antioxidant activity of pomegranate rind powder extract in cooked chicken patties [DOI]
  23. 23 Caffeic Acid Phenethyl Ester Suppresses the Proliferation of Human Prostate Cancer Cells through Inhibition of p70S6K and Akt Signaling Networks [DOI]
  24. 24 Comparison of the polyphenolic composition and antioxidant activity of European commercial fruit juices [DOI]
  25. 25 Rapid dereplication of estrogenic compounds in pomegranate (Punica granatum) using on-line biochemical detection coupled to mass spectrometry [DOI]
  26. 26 Food Stability Beyond Water Activity and Glass Transtion: Macro-Micro Region Concept in the State Diagram [DOI]
  27. 27 Phenolic profiles of in vivo and in vitro grown Coriandrum sativum L. [DOI]
  28. 28 Physical and Chemical Properties of Pomegranate (Punica granatum L.) Fruit in Maturation Stage
  29. 29 Oral Feeding of Pomegranate Fruit Extract Inhibits Early Biomarkers of UVB Radiation‐induced Carcinogenesis in SKH‐1 Hairless Mouse Epidermis [DOI]
  30. 30 Protective role of Punica granatum L. peel extract against oxidative damage in experimental diabetic rats [DOI]
  31. 31 Chemical Composition, Water Sorption Isotherm, and Phenolic Contents in Fresh and Dried Pomegranate Peels [DOI]
  32. 32 Antioxidant Activity of Pomegranate (Punica granatum L.) Fruit Peels [DOI]
  33. 33 Antioxidant activities of Punica granatum (pomegranate) peel extract on brain of rats [DOI]
  34. 34 Fruit quality of Italian pomegranate (Punica granatum L.) autochthonous varieties [DOI]
  35. 35 A NEW METHOD FOR ELLAGIC ACID PRODUCTION FROM POMEGRANATE HUSK [DOI]
  36. 36 Effect of Punica granatum peel extract on learning and memory in rats [DOI]

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