Total phenolics and antioxidant activity of extracts from the leaf samples of wild African and cultivated Mediterranean olive growing in Taif, KSA and their taxonomical significance

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Fadl M.A.; Abdel-Hameed E.-S.S.; Farrag H.F.; Bazaid S.A.

Journal: Der Pharmacia Lettre

Publisher: Scholars Research Library

Publication Date: 2015

Volume / Issue: Volume 7 / Issue 5

Pages: 93–103

ISSN: 9755071

Scopus: View on Scopus

Document Type: Article

Authors and Affiliations

Fadl M.A., Biology Department, Faculty of Science, Taif University, Saudi Arabia, Botany Department, Faculty of Science, Beni Suef University, Egypt; Abdel-Hameed E.-S.S., Natural Products Analysis Laboratory, Faculty of Science, Taif University, Saudi Arabia, Chemistry Department, Faculty of Science, Taif University, Saudi Arabia, Laboratory of Medicinal Chemistry, Theodor Bilharz Research Institute, Giza, Egypt; Farrag H.F., Biology Department, Faculty of Science, Taif University, Saudi Arabia, Botany Department, Faculty of Science, Cairo University, Egypt; Bazaid S.A., Biology Department, Faculty of Science, Taif University, Saudi Arabia, Natural Products Analysis Laboratory, Faculty of Science, Taif University, Saudi Arabia

Abstract

Interest of using naturally occurring antioxidants had been increased in our life to replace undesirable harmful synthetic antioxidants. In the present study, the antioxidant activity and total phenolic content of methanol and aqueous extracts of wild African (Olea europaea subsp. cuspidata (Wallich ex G. Don) Ciferri) and cultivated Mediterranean (Olea europaea subsp. europaea L.) olive leaf samples growing in Taif, KSA were estimated. All methanol and aqueous extracts showed high DPPH free radical scavenging activity with SC50 < 40 μg/ml. The extracts of wild olive have higher antioxidant activity than the cultivated olive. The methanol extract in the same subspecies showed higher antioxidant activity and total phenolic content than the aqueous extract. Positive correlation appeared between the antioxidant properties and phenolic content. In conclusion, these two subspecies may have great relevance in the prevention and therapies for diseases in which free radicals or oxidants are implicated after more phytochemical and biological studies. Phytochemical analysis confirmed the present taxonomy of African and Mediterranean olives as subspecies of Olea europaea L. At present, the authors started with a detailed phytochemical analysis of these extracts by LC-MS.

Keywords

Antioxidant; Aqueous; Leaves; Methanol; Olive; Taxonomy; Total phenolic; 1,1 diphenyl 2 picrylhydrazyl; acetic acid; aluminum chloride; flavonoid; flavonol; Olea cuspidata extract; Olea europaea extract; phenol; plant extract; unclassified drug; Africa; antioxidant activity; Article; controlled study; cultivated species; effective concentration; liquid chromatography; mass spectrometry; nonhuman; olive tree; phytochemistry; plant leaf; plant taxonomy; SC50; wild species

Citation Information

Scopus Citations: 0

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