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Influence of Water Deficit in Bioactive Compounds of Olive Paste and Oil Content
Author(s) -
SenaMoreno Estela,
CabreraBañegil Manuel,
PérezRodríguez Juan M.,
De Miguel Concepción,
Prieto María H.,
MartínVertedor Daniel
Publication year - 2018
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1002/aocs.12017
Subject(s) - tyrosol , hydroxytyrosol , oleuropein , verbascoside , chemistry , food science , antioxidant , vanillin , olive oil , phenols , polyphenol , organic chemistry , glycoside
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.