Direct Measurement of Oleocanthal and Oleacein Levels in Olive Oil by Quantitative 1H NMR. Establishment of a New Index for the Characterization of Extra Virgin Olive Oils
- 13 November 2012
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 60 (47), 11696-11703
- https://doi.org/10.1021/jf3032765
Abstract
A new method for direct measurement of the oleocanthal and oleacein levels in olive oil by quantitative 1H NMR was developed. The method was applied to the study of 175 monovarietal commercial Greek and California olive oil samples. The main findings were as follows: (1) There was a significant variation concerning the concentrations of oleocanthal and oleacein among the studied samples. Their concentrations ranged from nondetectable to 355 mg/kg and their sum (index D1) from 0 to 501 mg/kg. (2) There are olive varieties that independent of geographic origin and harvest time produce oil that contains both compounds in low levels. (3) There is a positive correlation of a high level of oleocanthal and oleacein in olive oils with the early time of harvest. Although there is a need for more extensive study, a new index for the characterization of extra virgin olive oils, which is a combination of D1 = oleocanthal + oleacein level and D2 = oleocanthal/oleacein ratio, seems to be very useful.Keywords
This publication has 21 references indexed in Scilit:
- Effect of oleocanthal and its derivatives on inflammatory response induced by lipopolysaccharide in a murine chondrocyte cell lineArthritis & Rheumatism, 2010
- Biological Activities of Phenolic Compounds Present in Virgin Olive OilInternational Journal of Molecular Sciences, 2010
- Alzheimer's-associated Aβ oligomers show altered structure, immunoreactivity and synaptotoxicity with low doses of oleocanthalToxicology and Applied Pharmacology, 2009
- tabAnti-HER2 (erbB-2) oncogene effects of phenolic compounds directly isolated from commercial Extra-Virgin Olive Oil (EVOO)BMC Cancer, 2008
- Virgin olive oil: Its functional capacityMolecular Nutrition & Food Research, 2007
- Phenolic Molecules in Virgin Olive Oils: a Survey of Their Sensory Properties, Health Effects, Antioxidant Activity and Analytical Methods. An Overview of the Last Decade AlessandraMolecules, 2007
- Ibuprofen-like activity in extra-virgin olive oilNature, 2005
- Sensory Properties of Virgin Olive Oil Polyphenols: Identification of Deacetoxy-ligstroside Aglycon as a Key Contributor to PungencyJournal of Agricultural and Food Chemistry, 2003
- Handbook of Olive OilPublished by Springer Science and Business Media LLC ,2000
- Simple and hydrolyzable compounds in virgin olive oil. 3. Spectroscopic characterizations of the secoiridoid derivatives.Journal of Agricultural and Food Chemistry, 1993