Treated Unconventional Waters Combined with Different Irrigation Strategies Affect 1 H NMR Metabolic Profile of a Monovarietal Extra Virgin Olive Oil

Federica Angilè, Gaetano Alessandro Vivaldi, Chiara Roberta Girelli, Laura Del Coco, Gabriele Caponio, Giuseppe Lopriore, Francesco Paolo Fanizzi and Salvatore Camposeo
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Federica Angilè: Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
Gaetano Alessandro Vivaldi: Dipartimento di Scienze Agro-Ambientali e Territoriali, Università degli Studi di Bari Aldo Moro, Via Amendola 165/a, 70126 Bari, Italy
Chiara Roberta Girelli: Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
Laura Del Coco: Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
Gabriele Caponio: Dipartimento di Scienze Agro-Ambientali e Territoriali, Università degli Studi di Bari Aldo Moro, Via Amendola 165/a, 70126 Bari, Italy
Giuseppe Lopriore: Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71121 Foggia, Italy
Francesco Paolo Fanizzi: Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
Salvatore Camposeo: Dipartimento di Scienze Agro-Ambientali e Territoriali, Università degli Studi di Bari Aldo Moro, Via Amendola 165/a, 70126 Bari, Italy

Sustainability, 2022, vol. 14, issue 3, 1-20

Abstract: The agricultural sector is facing a decrease in water supply and water quality at a global level and this is a problem that strictly affects all the Mediterranean olive growing areas. The aim of this work was to evaluate, for the first time, by NMR Spectroscopy and multivariate data analysis the metabolic profiling of the oils produced under different irrigation schemes. Arbosana olive oils were obtained from the use of saline reclaimed water (RW) and treated municipal wastewater (DW), combined with: full irrigation (FI) and regulated deficit irrigation (RDI). The results show a higher relative content of saturated fatty acids in EVOOs obtained from RDI strategy, regardless of the water source. Moreover, an increase in unsaturated fatty acids, a ω6/ω3 ratio content was observed in EVOOs obtained from RW when compared with DW water. Furthermore, the RW–RDI showed an increase in secoiridoid derivatives and hydroperoxides with respect to DW–RDI. A sustainable irrigation management, by combining a deficit irrigation strategy and saline reclaimed water source, could be crucial in order to overcome the problem of water scarcity and to guarantee the olive oil nutraceutical properties. The 1 H NMR-based metabolomic approach proved a powerful and versatile tool for this specific investigation.

Keywords: extra virgin olive oil; DESERT technology; regulated deficit irrigation; fatty acids; phenolic compounds; oxidation compounds; NMR; chemometrics approach (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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