This case study presents a fast and reliable method of combining strontium isotope ratios (87Sr/86Sr) with a multielement pattern (Rb, Sr, Y, Zr, Mo, Cd, Ba, Pb, Th, U, Mg, Ca, Sc, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, As and rare earth elements) by means of inductively coupled plasma mass spectrometry (ICP-MS) to establish a unique fingerprint of authentic Szegedi Fűszerpaprika (PDO) and classify authentic and purchased paprika from different known, declared and unknown geographical origin using multivariate statistical tools (principal component and canonical discriminant analysis). Since paprika represents a processed spice, alterations in element and Sr isotopic composition throughout the production process were investigated. The Sr source in the final product was identified to stem from bioavailable Sr sources in soil. Therefore, the ammonium nitrate extract of a soil is sufficient to establish a Sr fingerprint for agricultural products of a region. As a consequence, the spice paprika can be traced back to its geographical origin even after processing.
Food traceability Paprika Strontium isotope ratio (MC)-ICP-MS Multielement analyses Rare earth elements
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We acknowledge the scientific support of FWF 267N11, the BOKUDoc grant, the Austrian-Hungarian Research Fund (72öu2), the Hungarian Research Fund (OTKA F61087) and the Bolyai János Research Fellowship. We would like to thank László Abrankó from the Corvinus University of Budapest, Karin Dauda, Matthias Zeilinger, Ylva Rodhe, Giacomo Di Noto and Pipsa Salolammi for providing sample material.
European Council Regulation No. 510/2006 (2006) Official Journal of the European Union, European Commission, BrusselsGoogle Scholar