The Effects of Ripening Stage and Mode of Culture of Chemlali, Arbequina, and Koroneiki on the Capacities of Oils to Scavenge ABTS Free Radicals

  • Mourad Jellali High Agronomic Institute of Chott-Mariem, University of Sousse, Sousse, Tunisia
  • Dhouha Saidana Naija Olive Tree Institute, Sousse Station, Ibn Khaldoun, Sousse, Tunisia
  • Samia Ben Mansour Guedde Olive Tree Institute, Sousse Station, Ibn Khaldoun, Sousse, Tunisia
  • Mohamed Braham Olive Tree Institute, Sousse Station, Ibn Khaldoun, Sousse, Tunisia
Keywords: Olive Oil, Chemlali, Koroneiki, Arbequina, Ripening stage, extensive mode, intensive mode, Antioxidant activity, ABTS●


This paper focuses on evaluating the antioxidant power of olive oil against the cation radical ABTS•+ according to cultivars (Chemlali, Arbequina and Koroneiki), culture modes (extensive and intensive), ripening stages (November and December corresponding stages), and study year (2017 and 2018). Radical percentage inhibition (PI), Trolox equivalent antioxidant capacity (TEAC), inhibitory concentration required to scavenge 50% of radicals (IC50), and principal component analysis (PCA) were determined. The oil of the Tunisian main cultivar, Chemlali, cultivated in extensive mode, has the best scavenging power with the lowest IC50 values of 9.3, 10.8, 9.65 and 10.4 µg/ml respectively in all the ripening stages. Also, at the lowest tested concentration of 20 µg/ml, this oil has the highest TEAC values, respectively 2.28 and 2.20 in November of 2017 and 2018. For the introduced cultivars, Koroneiki presents better performance than Arbequina, in intensive mode, with IC50 ranged from 9.6 to 13.8 against 12.40 to 22.35 for Arbequina. Furthermore, the principal component analysis proves that the oils of Chemlali in extensive mode and Koroneiki in intensive mode have the best scavenging capacity of ABTS•+. This study proves that the extensive mode is the best culture mode and the ripening stage of November is the best stage in order to get oils with the highest antioxidant capacity.


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How to Cite
Jellali, M., Naija, D. S., Mansour Guedde, S. B., & Braham, M. (2023). The Effects of Ripening Stage and Mode of Culture of Chemlali, Arbequina, and Koroneiki on the Capacities of Oils to Scavenge ABTS Free Radicals. European Scientific Journal, ESJ, 19(15), 125.
ESJ Natural/Life/Medical Sciences