FATTY ACID COMPOSITION AND ANTIOXIDANT CAPACITY OF DEFATTED, NON-DEFATTED AND OILS EXTRACTS OF QUERCUS ILEX FRUIT FROM ALGERIA

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Guenane H.; Bakchiche B.; Erenler R.; Yildiz I.; Khalaf O.M.; Saad A.M.; Ghareeb M.A.

Journal: Roczniki Panstwowego Zakladu Higieny / Annals of the National Institute of Hygiene

Publisher: National Institute of Public Health NIH - National Research Institute

Publication Date: 13 September 2024

Volume / Issue: Volume 75 / Issue 3

Pages: 237–245

ISSN: 357715

DOI: 10.32394/rpzh/192523

Scopus: View on Scopus

PubMed: 39715055

Document Type: Article

Access: All Open Access; Gold Open Access

Authors and Affiliations

Guenane H., Laboratory of Biological and Agricultural Sciences (LBAS), Amar Telidji University, Laghouat, 03000, Algeria; Bakchiche B., Laboratory of Biological and Agricultural Sciences (LBAS), Amar Telidji University, Laghouat, 03000, Algeria; Erenler R., Department of Chemistry, Faculty of Arts and Sciences, Tokat, Gaziosmanpasa University, Tokat, 60240, Turkey; Yildiz I., Department of Chemistry, Faculty of Arts and Sciences, Tokat, Gaziosmanpasa University, Tokat, 60240, Turkey; Khalaf O.M., Chemistry of Natural Product Department, Ministry of Education, Anbar Education Directorate, Iraq; Saad A.M., Medicinal Chemistry Department, Theodor Bilharz Research Institute, Kornaish El Nile, Warrak El-Hadar, Imbaba (P.O. 30), Giza, 12411, Egypt; Ghareeb M.A., Medicinal Chemistry Department, Theodor Bilharz Research Institute, Kornaish El Nile, Warrak El-Hadar, Imbaba (P.O. 30), Giza, 12411, Egypt

Abstract

Background. The nutritional value and health-promoting properties cause the fruits (acorns) of Quercus ilex to have great potential for use in the food industry as functional ingredients and antioxidants source. Objective. In this study, the amount of total phenolic compounds, flavonoids in different extracts (defatted, non-defatted) and composition of fatty acids in the fruits oils of Quercus ilex were investigated. Besides, antioxidant activity was determined. Material and Methods. Fatty acids were extracted with n-hexane and determined by gas chromatography with mass spectrometry detection (GC-MS). Total phenolic and flavonoids contents in the extracts were measured spectrophotometrically and the antioxidant activities were tested by the DPPH (2,2-diphenyl-1-picrylhydrazyl), free radical scavenging assay, free radical-scavenging ABTS and total antioxidant capacity. Results. The amount of total phenolic and flavonoid compounds in the defatted Q. ilex were 634.36±27.41 mg GAE/g DW and 96.85±2.13 mg RE/g DW, respectively. Unsaturated fatty acids were detected in higher amounts than saturated fatty acids. The primary unsaturated fatty acids of the Quercus ilex oil were oleic acid (65.38%), 9,12-octadecadienoic acid (16.64%) and palmitic acid (12.81%). Besides, defatted Q. ilex extract showed remarkable DPPH and ABTS radical scavenging activity with IC50 values of 0.008±0.0008, 0.005±0.001 mg/ml respectively, while high total antioxidant capacity of the non-defatted extract with VCEAC value 0.13±0.006. Conclusions. Q. ilex oil contained high amounts of polyphenols, high essential fatty acids and antioxidant potential for producing specific health promoting antioxidants in food and pharmaceutical industry. © 2024 National Institute of Public Health NIH - National Research Institute. All rights reserved.

Keywords

antioxidants; fatty acids; GC-MS; Quercus ilex; total flavonoids; total phenolics; Algeria; Flavonoids; Fruit; Gas Chromatography-Mass Spectrometry; Humans; Phenols; Plant Extracts; Plant Oils; Quercus; antioxidant; fatty acid; flavonoid; phenol derivative; plant extract; vegetable oil; chemistry; human; mass fragmentography; oak

Citation Information

Scopus Citations: 3

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