title: Geographical traceability based on 87Sr/86Sr indicator: a first approach for PDO Lambrusco wines from Modena.
abstract: The main goal of this study was to evaluate (87)Sr/(86)Sr ratio in different matrices, namely soils, branches, and grape juices, of an oenological food chain in order to develop a robust analytical strategy able to link the investigated food to its territory of origin. The (87)Sr/(86)Sr has been used as traceability marker and several aspects, affected its variability, i.e. geological features of the investigated area, the bio-available fraction of elements in the soils and the up-take of the plant, have been taken into account. Optimisation of an analytical procedure for the separation of Sr from its interferences and investigation of the analytical performances in terms of precision of used methodology have been carried out as well. This work highlighted a good match between the isotopic values monitored in the bio-available fraction of soils and their respective grape juices for almost all the investigated areas. The correlation with food satisfyingly improves when isotopic relative abundance values of branches vine are considered.
authors.affiliation: University of Modena and Reggio Emilia, Department of Chemistry, via G. Campi 183, 41125 Modena, Italy.
authors.forename: Caterina
authors.initials: C
authors.lastname: Durante
authors.forename: Carlo
authors.initials: C
authors.lastname: Baschieri
authors.forename: Lucia
authors.initials: L
authors.lastname: Bertacchini
authors.forename: Marina
authors.initials: M
authors.lastname: Cocchi
authors.forename: Simona
authors.initials: S
authors.lastname: Sighinolfi
authors.forename: Michele
authors.initials: M
authors.lastname: Silvestri
authors.forename: Andrea
authors.initials: A
authors.lastname: Marchetti
mesh_terms: D016002:Discriminant Analysis; D005843:Geography; D007558:Italy; D013058:Mass Spectrometry / Q000379:methods*; D012987:Soil / Q000737:chemistry*; D013325:Strontium Isotopes / Q000032:analysis*; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D012987:Soil; D013325:Strontium Isotopes
keywords: Geographical traceability; Grape juices; Multi collector ICP mass spectrometry; Strontium isotopic ratio