Influence of Water Deficit in Bioactive Compounds of Olive Paste and Oil Content

The main objective of this study was to evaluate the effect of different deficit irrigation treatments (control, regulated deficit irrigation [RDI]‐1, RDI‐2, and RDI‐3) on the phenolic profile of the olive paste and oil content. Irrigation treatments with more stress water led to a considerable incr...

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Bibliographic Details
Published in:Journal of the American Oil Chemists' Society 2018-03, Vol.95 (3), p.349-359
Main Authors: Sena‐Moreno, Estela, Cabrera‐Bañegil, Manuel, Pérez‐Rodríguez, Juan M., De Miguel, Concepción, Prieto, María H., Martín‐Vertedor, Daniel
Format: Article
Language:English
Subjects:
Antioxidant activity
Deficit irrigation treatments
Olive oil
Olive paste
Phenolic compounds
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Summary:The main objective of this study was to evaluate the effect of different deficit irrigation treatments (control, regulated deficit irrigation [RDI]‐1, RDI‐2, and RDI‐3) on the phenolic profile of the olive paste and oil content. Irrigation treatments with more stress water led to a considerable increase in the phenolic compounds of olive paste, especially in oleuropein (60.24%), hydroxytyrosol (82%), tyrosol (195%), and verbascoside (223%) compared to control. A significant increase in the content of total flavonoids and phenolic acids was also observed for these samples. In virgin olive oils (VOO) elaborated from the most stressed olive trees (RDI‐2 and RDI‐3), a noticeable increase in phenolic substances with antioxidant properties (oleuropein, hydroxytyrosol, tyrosol, secoiridoid derivatives, and o‐vanillin) was observed. Consequently, water stress conditions improved antioxidant activity of VOO.
ISSN:0003-021X
1558-9331
DOI:10.1002/aocs.12017