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Article

Phenolic Compounds Characterization and Antioxidant Properties of Monocultivar Olive Oils from Northeast Algeria

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Department of Biological Sciences, Faculty of Nature and Life Sciences and Sciences of Earth and Universe, University of Bordj Bou Arreridj, Bordj Bou Arreridj 34030, Algeria
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Laboratory of Phytotherapy Applied to Chronic Diseases, Department of Biology and Animal Physiology, Faculty of Nature and Life Sciences, University Setif 1, Setif 19000, Algeria
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Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF) University of Palermo, 90123 Palermo, Italy
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Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98165 Messina, Italy
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Foundation “Prof. Antonio Imbesi”, University of Messina, Piazza Pugliatti 1, 98122 Messina, Italy
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Institute for Agricultural and Forest Systems in the Mediterranean, National Council of Research, 95128 Catania, Italy
*
Authors to whom correspondence should be addressed.
Agriculture 2020, 10(11), 494; https://doi.org/10.3390/agriculture10110494
Received: 23 September 2020 / Revised: 20 October 2020 / Accepted: 21 October 2020 / Published: 23 October 2020
(This article belongs to the Special Issue New Traits of Agriculture/Food Quality Interface)
In Algeria, the olive tree is one of the main fruit species and plays a very important socioeconomic role. The objective of this study was firstly, to identify and quantify the phenolics of some Algerian olive oils, and secondly, to assess the antioxidant activity of the samples. The olive oils used in this study were derived from Algerian cultivars, including Tefahi, Gelb Elfarroudj, Chemlal, and imported cultivar Manzanilla and Zebboudj. For this purpose, gas chromatography—mass spectrometry (GC-MS) was used to identify olive oil fatty acids profile, while the individual phenolic compounds were assessed by ultra-high-performance liquid chromatography–electrospray ionization–high-resolution mass spectrometry (UHPLC-HESI-MS). To verify the antioxidant capacity, five in vitro free radical assays were used. Questionable values of particular physico-chemical parameters, such as the high value of free acidity and the low concentration of monounsaturated fatty acids in oil from the Zebboudj cultivar, indicate that improvements in olive cultivation and oil production practices are needed. Gelb Elfarroudj, Tefahi, and Manzanilla oils contain quantities of monounsaturated fatty acids in accordance with EU regulations. The oil obtained from the Zebboudj cultivar is not usable for food purposes due to the high value in free acidity and the low concentration of monounsaturated fatty acids. Tefahi and Manzanilla cultivars have given oils with the best antioxidant activity as compared to other studied cultivars; this is attributable to their composition in bioactive phenolic compounds, such as secoiridoids, which play an important role in human health as scavengers of free radicals. The results are interesting for producers and consumers to promote the culture of olive oils derived in particular from the Tefahi cultivar. However, in order to improve the health qualities of this oil, the agronomic techniques essentially linked to the time of harvesting of the olives destined for oil production must be improved. View Full-Text
Keywords: Manzanilla; Tefahi; Gelb Elfarroudj cultivar; secoiridoids; radical scavenging; UHPLC-HESI-MS; phenolics Manzanilla; Tefahi; Gelb Elfarroudj cultivar; secoiridoids; radical scavenging; UHPLC-HESI-MS; phenolics
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MDPI and ACS Style

Boussahel, S.; Di Stefano, V.; Muscarà, C.; Cristani, M.; Melilli, M.G. Phenolic Compounds Characterization and Antioxidant Properties of Monocultivar Olive Oils from Northeast Algeria. Agriculture 2020, 10, 494. https://doi.org/10.3390/agriculture10110494

AMA Style

Boussahel S, Di Stefano V, Muscarà C, Cristani M, Melilli MG. Phenolic Compounds Characterization and Antioxidant Properties of Monocultivar Olive Oils from Northeast Algeria. Agriculture. 2020; 10(11):494. https://doi.org/10.3390/agriculture10110494

Chicago/Turabian Style

Boussahel, Soulef, Vita Di Stefano, Claudia Muscarà, Mariateresa Cristani, and Maria G. Melilli 2020. "Phenolic Compounds Characterization and Antioxidant Properties of Monocultivar Olive Oils from Northeast Algeria" Agriculture 10, no. 11: 494. https://doi.org/10.3390/agriculture10110494

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