Elemental Profile and 207Pb/206Pb, 208Pb/206Pb, 204Pb/206Pb, 87Sr/86Sr Isotope Ratio as Fingerprints for Geographical Traceability of Romanian Wines

  • Florin D. BORA Research Station for Viticulture and Enology Târgu Bujor, 805200 Târgu Bujor
  • Alina DONICI Research Station for Viticulture and Enology Târgu Bujor, 805200 Târgu Bujor
  • Teodor RUSU University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca
  • Andrea BUNEA University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca
  • Daniela POPESCU SC Jidvei SRL, Department of Research and Development, 45 Gării Street, 517385 Jidvei, Alba
  • Claudiu I. BUNEA University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca

Abstract

Geographical wine traceability is an important topic in the context of wine authentification. Therefore, many researchers have addressed this subject by developing different methodologies based on multivariate analysis of organic and inorganic parameters and also by isotopic signature. The goal of this research was to assess the potential of elemental composition and isotopic signature of lead (207Pb/206Pb, 208Pb/206Pb and 204Pb/206Pb) and strontium (87Sr/86Sr) of wines from three Romanian vineyards, in order to highlight reliable markers for wine geographical origin. The ICP-MS method was used for the concentration determination for 30 elements (Ag, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, In, K, Li, Mg, Mn, Na, Ni, Pb, Rb, Se, Sr, Tl, V, U, Zn, Hg). In this study 10 wines (2 red and 8 white) obtained from ‘Merlot’, ‘Fetească neagră’, ‘Fetească albă’, ‘Fetească regală’, ‘Băbească gri’, ‘Șarba’, ‘Aligoté’, ‘Sauvignon blanc’, ‘Muscat Ottonel’, ‘Italian Riesling’ cultivars were investigated. The wine samples were obtained from micro-wine production under conditions of 2014, 2015, 2016 from Dealu Bujorului, Murfatlar and Ștefănești-Argeș vineyards. The high level of K (148.66±5.41-633.74±4.13 mg/L), Mg (88.23±0.84-131.66±3.42 mg/L), Ca (49.84±1.22-89.18±2.34) and Fe were observed in the wine samples analysed. Heavy metals like Hg, Pb, As and Cd (10.2-315 µg/L) were found below acceptable limits. Concentration of Na (1 mg/L), Cu (1 mg/L), As (0.2 mg/L), Cd (0.01 mg/L), Zn (5 mg/L) and Pb (0.15 mg/L) metals in analysed wine samples were under Maximum Permissible Limits (MPL), respectively as published by the Organization of Vine and Wine. The variation of the 207Pb/206Pb, 208Pb/206Pb, 204Pb/206Pb and 87Sr/86Sr ratio and K/Rb, Ca/Sr of the investigated wine clearly demonstrated that these variables are suitable traces for wine geographical origin determination. The proposed methodology allowed a 100% successful classification of wines according to the region of provenance.

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Author Biographies

Florin D. BORA, Research Station for Viticulture and Enology Târgu Bujor, 805200 Târgu Bujor

Teodor RUSU, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca

Andrea BUNEA, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca

Daniela POPESCU, SC Jidvei SRL, Department of Research and Development, 45 Gării Street, 517385 Jidvei, Alba

Claudiu I. BUNEA, University of Agricultural Sciences and Veterinary Medicine, 3-5 Mănăştur Str., 400372 Cluj-Napoca

Published
2018-01-01
How to Cite
BORA, F. D., DONICI, A., RUSU, T., BUNEA, A., POPESCU, D., & BUNEA, C. I. (2018). Elemental Profile and 207Pb/206Pb, 208Pb/206Pb, 204Pb/206Pb, 87Sr/86Sr Isotope Ratio as Fingerprints for Geographical Traceability of Romanian Wines. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 46(1), 223-239. https://doi.org/10.15835/nbha46110853
Section
Research Articles