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Oxidative stability of edible vegetable oils enriched in polyphenols with olive leaf extract.

Oxidative stability of edible vegetable oils enriched in polyphenols with olive leaf extract.









No. Divisions/Titles for Abstract Details

1 Abstract Title Oxidative stability of edible vegetable oils enriched in polyphenols with olive leaf extract.


2 Abstract Source Revista de Agaroquimica y Tecnologia de Alimentos, 13, 413-421.


3 Abstract Author(s) Salta, F. N., Mylona, A., Chiou, A., Boskou, G. & Andrikopoulos, N.


4 Article Affiliation Laboratory of Chemistry – Biochemistry – Physical Chemistry of Foods Department of the Science of Dietetics – Nutrition, Harokopio University 70 El. Venizelou Ave., 176 71 Kallithea, Athens, Greece.


5 Abstract Commercially available oils (olive oil, sunflower oil, palm oil, and a vegetable shortening) were enriched in polyphenols, by adding olive leaf extract. Addition of the extract was performed in such way that the oils were enriched with 200 mg/kg polyphenols. Total polyphenols of both enriched and commercial oils were estimated by the Folin—Ciocalteau assay, while identification and quantification of individual simple phenolic compounds was performed by GC/MS and of oleuropein by HPLC analysis. The enrichment resulted in the supplementation of the commercial oils mainly with oleuropein, hydroxytyrosol, and quercetin. Antioxidant capacity and oxidative stability of the enriched oils and the commercial ones were assessed by the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH•) scavenging assay and the Rancimat method, respectively. Both antioxidant capacity and oxidative stability were substantially improved for all the oils studied after supplementation. By the procedure adopted, oils rich in polyphenols, mainly in oleuropein, can be produced with olive leaf extract supplementation.


6 Summary -


7 Article Published Date
December 1, 2007.


8 Study Type Invitro.


9 Substances Olive leaf.


10 Diseases Oxidative stress.


11 Pharmacological Actions Antioxidant.


12 Link https://goo.gl/xbsbTs








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