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Modification of Phenolic Compounds and Volatile Profiles of Chemlali Variety Olive Oil in Response to Foliar Biofertilization.

Authors :
Dabbaghi, Olfa
Tekaya, Meriem
Flamini, Guido
Zouari, Imen
El‐Gharbi, Sinda
M'barki, Naouraz
Laabidi, Foued
Cheheb, Hechmi
Attia, Faouzi
Aïachi Mezghani, Mouna
Hammami, Mohamed
Mechri, Beligh
Source :
Journal of the American Oil Chemists' Society (JAOCS); May2019, Vol. 96 Issue 5, p585-593, 9p
Publication Year :
2019

Abstract

The main objective of this work was to study the effects of foliar biofertilizers on individual volatile profiles and phenolic compounds of olive oil (Olea europaea L. cv. Chemlali). Three foliar biofertilizers were used in two successive application seasons: T1 (rich in nitrogen, phosphorus and potassium); T2 (rich in calcium); and T3 (application of both T1 and T2). Results showed that foliar fertilization with T2 increased the phenolic compound contents (e.g., oleuropein aglycone and decarboxymethyl ligstroside aglycone) of Chemlali olive oil. It also enhanced the levels of many volatile compounds responsible for the good flavor of olive oil such as hexanal. However, T1‐tested fertilizer led to a significant decrease in the content of phenolic compounds, although they seemed to improve significantly the levels of the majority of volatile compounds, especially hexanal. Based on these results, a significant relationship between plant nutrition and quality of oil was observed. Our results demonstrated a potential positive influence on the concentration of sensory quality compounds under T2 (Ca2+‐based fertilizer). This result should be considered in the design of foliar nutrient application management strategies for olive trees. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0003021X
Volume :
96
Issue :
5
Database :
Complementary Index
Journal :
Journal of the American Oil Chemists' Society (JAOCS)
Publication Type :
Academic Journal
Accession number :
136091259
Full Text :
https://doi.org/10.1002/aocs.12201