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CyTA - Journal of Food
Article . 2020 . Peer-reviewed
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CyTA - Journal of Food
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CyTA - Journal of Food
Article . 2020
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DIGITAL.CSIC
Article . 2020 . Peer-reviewed
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Variations in fatty acid composition and antioxidant content in olive fruits as a result of the application of phytoregulators to the olive tree (Olea europaeaL.)

Authors: Gracia Patricia Blanch; Maria C. Gómez-Jiménez; Maria Luisa Ruiz Del Castillo;

Variations in fatty acid composition and antioxidant content in olive fruits as a result of the application of phytoregulators to the olive tree (Olea europaeaL.)

Abstract

[ES]: En este trabajo se propone un nuevo procedimiento para minimizar la degradación de ácidos grasos y polifenoles durante el almacenamiento de la aceituna. Este procedimiento se basa en el tratamiento pre-cosecha de olivos Arbequina y Picual con jasmonato de metilo y ácido abscísico. Como resultado, el contenido de fenoles totales aumentó en todas las aceitunas Arbequina tratadas por comparación con las aceitunas control. Al contrario que en Arbequina, sólo el ácido abscísico provocó un aumento de fenoles totales en el caso de las aceitunas Picual. Con respecto a la actividad antioxidante, ninguno de los dos fitorreguladores resultó efectivo. La composición de ácidos grasos también se vio alterada con los tratamientos en Arbequina y en Picual. Los ácidos grasos saturados descendieron tanto con jasmonato de metilo como con ácidos abscísico mientras que los ácidos grasos insaturados aumentaron significativamente en las aceitunas tratadas. Las aceitunas con mayor actividad antioxidante mostraron una mayor relación entre ácidos grasos insaturados y ácidos grasos saturados. La aplicación de fitorreguladores al olivo puede ser interesante para la industria del aceite, especialmente cuando existen retrasos en el procesado y las aceitunas tienen que ser almacenadas.

[EN]: A new procedure to minimize the degradation of fatty acids and polyphenols during the olive storage is here proposed. This procedure is based on pre-harvest treatments of Arbequina and Picual olive trees with methyl jasmonate and abscisic acid. As a result, total phenolic content increased in all treated Arbequina olives as compared with controls. In contrast to Arbequina, only abscisic acid resulted in total phenolic content increase in Picual olives. Regarding the antioxidant activity, neither of the phytoregulators was effective. Fatty acid composition was also affected by both of them in Arbequina and Picual. Saturated fatty acid decreased with both methyl jasmonate and abscisic acid whereas unsaturated fatty acids increased significantly in treated olives. Olives with higher antioxidant activity exhibited higher unsaturated/saturated fat ratio. The application of phytoregulators to olive tree can be interesting to the oil industry particularly when a delay in oil processing occurs and olives have to be stored.

Authors thank the Comunidad of Madrid and European funding from FSE and FEDER programs for financial support (project S2018/BAA-4393, AVANSECAL-II-CM).

Peer reviewed

Country
Spain
Keywords

Polifenoles, Nutrition. Foods and food supply, Olive, Polyphenols, methyl jasmonate, TP368-456, Methyl jasmonate, fatty acids, Food processing and manufacture, Jasmonato de metilo, olive, abscisic acid, Abscisic acid, TX341-641, Fatty acids, Aceituna, polyphenols, Ácidos grasos, Ácido abscísico

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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