Strontium elemental and isotopic signatures of Bordeaux wines for authenticity and geographical origin assessment

•Sr elemental and isotopic composition of 43 Bordeaux wines is determined.•Differentiation of authentic Bordeaux wines on the basis of their 87Sr/86Sr ratio.•Relationship between Sr concentrations and 87Sr/86Sr in wine.•Detection of wine counterfeits on the basis of 87Sr/86Sr and Sr concentrations.•...

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Bibliographic Details
Published in:Food chemistry 2019-10, Vol.294, p.35-45
Main Authors: Epova, Ekaterina N., Bérail, Sylvain, Séby, Fabienne, Vacchina, Véronique, Bareille, Gilles, Médina, Bernard, Sarthou, Laurence, Donard, Olivier F.X.
Format: Article
Language:English
Subjects:
87Sr/86Sr isotope ratio
Analytical chemistry
Bordeaux wine
Chemical Sciences
Farms
Food engineering
Geographical origin
Life Sciences
Mass Spectrometry
Multi-collector ICP-MS
Other
Soil - chemistry
Sr concentrations
Strontium - analysis
Strontium Isotopes - analysis
Terroir
Wine - analysis
Wine authenticity
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Summary:•Sr elemental and isotopic composition of 43 Bordeaux wines is determined.•Differentiation of authentic Bordeaux wines on the basis of their 87Sr/86Sr ratio.•Relationship between Sr concentrations and 87Sr/86Sr in wine.•Detection of wine counterfeits on the basis of 87Sr/86Sr and Sr concentrations.•Sr isotope ratio is a promising parameter for wine authenticity control. The 87Sr/86Sr ratio and Sr concentrations of 43 authentic Bordeaux wines from the world’s most prestigious châteaux are presented in the context of their relation to the geographical origin of wine and authenticity. The results demonstrate relatively narrow spans of variabilities observed for 87Sr/86Sr ratio and Sr concentrations in authentic Bordeaux wines, which can be used with reasonable certainty as specific parameters for identifying regional wineries. For comparison, a set of imitated Bordeaux wines was studied for Sr isotopic and elemental compositions. A significant excess of both parameters in suspicious wines were found in reference to authentic values. Such natural and anthropogenically induced variations offer an enhanced discriminating potential of Sr. The unique Sr binary signature may detect imitated wines and trace genuine products from different regional wineries. The obtained results shown a promising perspective for wine authenticity control by means of Sr isotopic and elemental composition.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2019.04.068