Assessment of Antioxidant and Antimicrobial Compounds of Volatiles from Leaves, Stems and Flowers of Olives
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Olive Tree Institute, Sousse Station, 4061,14 Ibn Khaldoun, Sousse, Tunisia
Università di Pisa, Dipartimento di Farmacia Via Bonanno 33, 56126 Pisa, Italy
Regional Centre of Research on Horticulture and Organic Agriculture (CRRHAB), University of Sousse, Chott-Mariem, Tunisia
Submission date: 2020-03-12
Final revision date: 2020-04-29
Acceptance date: 2020-04-29
Online publication date: 2020-11-26
Publication date: 2021-01-20
Corresponding author
Dhouha Saidana Naija   

Olive Tree Institute, Tunisia
Pol. J. Environ. Stud. 2021;30(2):1325-1338
Protection of olive cultivars, Olea europaea L., from diseases and the development of more sophisticated control methods are indispensable for a renovated and competitive olive sector. In this context, the volatiles obtained by the main Tunisian oil cultivar Chemlali and both the introduced cultivars Arbequina and Koroneiki were tested for their antimicrobial activity against several dangerous pathogens by diffusion and dilution methods (in 2014). To evaluate the adaptation to biotic stress, the antioxidant potential was additionally evaluated. The volatiles extracted from leaves, stems and flowers of the tested cultivars exhibited interesting antimicrobial and antioxidant activities, reaching in many cases 100% of inhibition. To identify the bioactive compounds, GC-FID and GC-MS were performed, permitting to identify up to 97.8% of total compounds. Both non-terpene hydrocarbons and terpenes were present in important proportions among volatiles.
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