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Elemental Profile and 87Sr/86Sr Isotope Ratio as Fingerprints for Geographical Traceability of Wines: an Approach on Romanian Wines

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Abstract

Wine geographical traceability is an important topic in the context of wine authentication and for that, many researchers worldwide have addressed this subject by developing different methodologies based on multivariate analysis of natural chemical composition data (inorganic or organic parameters) and isotopic signature. The goal of this work was to assess the potential of elemental composition and strontium isotope ratio (87Sr/86Sr) of wines from important wine-producing regions in Romania, located in relatively small geographical areas, in order to highlight reliable markers for wine geographical origin discrimination. Elemental profile determinations were performed by ICP-MS, GFAAS, and FAAS techniques after microwave acid digestion of the wine samples. The 87Sr/86Sr isotope ratio of the resulted extracts was determined by quadrupole inductively coupled plasma mass spectrometry (Q-ICP-MS), after separating strontium and rubidium using cation-exchange chromatography with Dowex 50W-X8 resin and the complexation ability of the carboxylic acid EDTA. The variation of elemental composition (Ga, Sr, and Al), Ca/Sr ratio, and the 87Sr/86Sr ratio of the investigated wine clearly demonstrated that these variables are suitable tracers for wine geographic origin determination. The proposed methodology allowed a 100 % successful classification of wines according to the region of provenance.

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Acknowledgements

The authors thank the Romanian Ministry of Education and Research, the National Authority for Scientific Research for the financial support under the NUCLEU Program.

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Authors and Affiliations

  1. National R&D Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Vilcea, 4th Uzinei Street, 240050 Rm.Vilcea, PO Raureni, Box 7, Vilcea, Romania

    Elisabeta-Irina Geană, Claudia Sandru, Vasile Stanciu & Roxana Elena Ionete

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  1. Elisabeta-Irina Geană
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  2. Claudia Sandru
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  3. Vasile Stanciu
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  4. Roxana Elena Ionete
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Correspondence to Roxana Elena Ionete.

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Funding

This work was performed with support from the Romanian Ministry of Education and Research and the National Authority for Scientific Research under the NUCLEU Program.

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Elisabeta Irina Geana declares that she has no conflict of interest. Claudia Sandru declares that she has no conflict of interest. Vasile Stanciu declares that he has no conflict of interest. Roxana Elena Ionete declares that she has no conflict of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Geană, EI., Sandru, C., Stanciu, V. et al. Elemental Profile and 87Sr/86Sr Isotope Ratio as Fingerprints for Geographical Traceability of Wines: an Approach on Romanian Wines. Food Anal. Methods 10, 63–73 (2017). https://doi.org/10.1007/s12161-016-0550-2

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  • DOI: https://doi.org/10.1007/s12161-016-0550-2

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