Oxygen-18 measurement of Andalusian olive oils by continuous flow pyrolysis/isotope ratio mass spectrometry |
| |
Authors: | Aramendía María A Marinas Alberto Marinas José M Moreno José M Moalem Mustafa Rallo Luis Urbano Francisco J |
| |
Affiliation: | Department of Organic Chemistry, University of Córdoba, Campus de Rabanales, Marie Curie Building, E-14014 Córdoba, Spain. |
| |
Abstract: | We report a method for the determination of delta(18)O isotopic abundance in olive oils. The results obtained by applying the method to various Andalusian oil samples obtained in the 2004/05 and 2005/06 seasons are discussed in relation to olive variety, geographical origin, climate and ripeness index. Application of the method to samples of assured varietal purity exposed the influence of olive variety and origin but not of the ripeness index. The delta(18)O values for the 2005/06 season are higher on average than those obtained in the colder 2004/05 season. Results obtained for samples of the Picual and Hojiblanca varieties in Córdoba and Málaga in the 2005/06 season suggest a correlation between enrichment in heavy isotopes and latitude whereas no clear-cut effect of altitude was observed. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|