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Alqarni, M.M.M., Osman, M.A., Al-Tamimi, D.S., Gassem, M.A., Al-Khalifa, A.S., Al-Juhaimi, F. and Mohamed Ahmed, I.A, “Antioxidant and antihyperlipidemic effects of Ajwa date (Phoenix dactylifera L.) extracts in rats fed a cholesterol-rich diet”, J. Food Biochem. 43(8). e12933. Aug.2019.

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Article

Towards the Utilization of Date Palm (Phoenix dactylifera) Leaves as a Rich Source of Antioxidants

1Biochemistry department, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia, 2455, Riyadh 11451


Journal of Food and Nutrition Research. 2020, Vol. 8 No. 11, 632-637
DOI: 10.12691/jfnr-8-11-3
Copyright © 2020 Science and Education Publishing

Cite this paper:
Abuelgassim Omer Abuelgassim. Towards the Utilization of Date Palm (Phoenix dactylifera) Leaves as a Rich Source of Antioxidants. Journal of Food and Nutrition Research. 2020; 8(11):632-637. doi: 10.12691/jfnr-8-11-3.

Correspondence to: Abuelgassim  Omer Abuelgassim, Biochemistry department, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia, 2455, Riyadh 11451. Email: gassim@ksu.edu.sa

Abstract

Three varieties of date palm (Phoenix dactylifera) leaves (DPL) namely: Sagaie, Khalas, and Nabtat Alsaif were examined for their antioxidant activities. DPL extracts showed a total phenolic content ranged between 1498.14 ± 100.52 - 4374.76 ± 657.64 mg gallic acid equivalent (GAE)/100g dry weight (DW) and a total flavonoid ranged between 134.70 ± 16.24 - 224.62 ± 22.35 mg quercetin (QE)/100g (DW). The IC50s for scavenging ABTS radical were ranged between 71.87 ± 14.37- 217.87 ± 27.40µg Trolox equivalent, whereas that required for scavenging DPPH were ranged between 197.86 ± 17.60-693.32 ± 25.44 µg ascorbic acid equivalent. DPL extracts potentially scavenged hydroxyl and superoxide anion radicals, IC50s values were ranged between 208.04 ± 12.76-719.63 ± 24.38 and 825.92 ± 19.40 -1193.20 ± 28.74µg GAE respectively. DPL extracts showed a good activity against ferric reducing antioxidant power (FRAP) ranged between 7.69 ± 0.47- 22.13 ± 1.36 mmol ascorbic acid equivalent/100g. DPL extracts showed a considerable antioxidant activity, therefore, DPL could be effectively used as natural source of antioxidant in food and pharmaceutical industries.

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