Document Detail


A nuclear magnetic resonance (1H and 13C) and isotope ratio mass spectrometry (delta13C, delta2H and delta18O) study of Andalusian olive oils.
MedLine Citation:
PMID:  20411585     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have determined delta(13)C, delta(2)H and delta(18)O isotopic abundances in Andalusian olive oils. In addition, the fatty acid composition and the distribution of isomers at positions 1,3 and 2 of glycerol were determined by (1)H and (13)C nuclear magnetic resonance (NMR) spectroscopy, respectively. Isotopic results obtained for four series of oil samples extracted from olives harvested in the 2004/05 and 2005/06 seasons are discussed in terms of olive variety, ripeness, geographical origin, fatty acid composition and growing altitude. A distinction was also established between olives grown in irrigated and in dry land by studying selected samples of the previous series and others from the 2005/06, 2006/07, 2007/08 and 2008/09 seasons. The results showed that olive ripeness does not influence the abundance of any of the three isotopes studied. On the other hand, the olive variety influences the abundance of the oxygen and hydrogen isotopes, and also, less markedly, that of carbon. No clear-cut effect of height or latitude on isotope values is observed, probably because the olive variety also changes with height and latitude, thus masking such influences. The oil samples from dryland-grown olives had increased delta(13)C values relative to irrigation-grown olives. In addition, no definite relationship appears to exist between isotope distribution and fatty acid composition. Finally, oil samples from olives harvested in the 2005/06 season in Italy could be distinguished from those from Spain in terms of their isotopic values (delta(2)H mainly).
Authors:
María A Aramendía; Alberto Marinas; José M Marinas; Elena Sánchez; Francisco J Urbano; Claude Guillou; José M Moreno Rojas; Mustafa Moalem; Luis Rallo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Rapid communications in mass spectrometry : RCM     Volume:  24     ISSN:  1097-0231     ISO Abbreviation:  Rapid Commun. Mass Spectrom.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-22     Completed Date:  2010-08-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802365     Medline TA:  Rapid Commun Mass Spectrom     Country:  England    
Other Details:
Languages:  eng     Pagination:  1457-66     Citation Subset:  IM    
Copyright Information:
Copyright 2010 John Wiley & Sons, Ltd.
Affiliation:
Department of Organic Chemistry, University of Córdoba, Campus de Rabanales, Marie Curie Building, E-14014 Córdoba, Spain.
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MeSH Terms
Descriptor/Qualifier:
Carbon Isotopes / chemistry
Fatty Acids / analysis*
Food Analysis / methods
Geography
Hydrogen / chemistry
Italy
Magnetic Resonance Spectroscopy / methods*
Mass Spectrometry / methods*
Plant Oils / chemistry*
Spain
Chemical
Reg. No./Substance:
0/Carbon Isotopes; 0/Fatty Acids; 0/Plant Oils; 1333-74-0/Hydrogen; 8001-25-0/olive oil

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