Title: Control of Oenological Products: Discrimination between Different Botanical Sources of L-tartaric Acid by Isotope Ratio Mass Spectrometry
Authors: MORENO ROJAS JOSE'COSOFRET SorinRENIERO FABIANOGUILLOU CLAUDESERRA FRANCESCA
Citation: RAPID COMMUNICATIONS IN MASS SPECTROMETRY vol. 21 p. 2447-2450
Publisher: JOHN WILEY & SONS LTD
Publication Year: 2007
JRC N°: JRC44343
ISSN: 0951-4198
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC44343
DOI: 10.1002/rcm.3105
Type: Articles in Journals
Abstract: Following previous studies on counterfeit of wines with synthetic ingredients, the possibility of frauds by natural external L-tartaric acid has also been investigated. The aim of this research was to map the stable isotope ratios of L-tartaric acid coming from botanical species containing large amounts of this compound: grape and tamarind. Samples of L-tartaric acid were extracted from the pulp of tamarind fruits originating from several countries and from grape must. d13C and d18O were measured for all samples. Additional d2H measurements were performed as a complementary analysis to help discrimination of the botanical origin. Different isotopic patterns were observed for the different botanical origins. The multivariate statistical analysis of the data shows clear discrimination among the different botanical and synthetic sources. This approach could be a complementary tool for the control of L-tartaric acid used in oenology.
JRC Institute:Institute for Health and Consumer Protection

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