Author(s):
Coelho, Inês ; Matos, Ana Sofia ; Epova, Ekaterina N. ; Barre, Julien ; Cellier, Robin ; Ogrinc, Nives ; Castanheira, Isabel ; Bordado, João ; Donard, Olivier F. X.
Date: 2023
Persistent ID: http://hdl.handle.net/10362/151620
Origin: Repositório Institucional da UNL
Project/scholarship:
info:eu-repo/grantAgreement/EC/H2020/871083/EU;
info:eu-repo/grantAgreement/EC/H2020/692241/EU;
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00667%2F2020/PT;
Subject(s): Chemometrics; Douro wine; Geographical origin; Isotopic analysis; Multielement analysis; Port wine; Wine authenticity; Food Science
Description
Publisher Copyright: © 2022 The Authors
Port and Douro wines are produced in the Douro Demarcated Region using different wine making processes. This works aims at evaluating the influence of the geographical origin and the wine making process in their multielement (Li, Be, B, Al, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Rb, Sr, Mo, Ag, Cd, Sn, Tl, Pb, Fe, Mg, P, Ca, Na, K) and isotopic compositions (87Sr/86Sr, δ11B, xPb/yPb, δ18O). Fifteen samples of each were analysed. ANOVA identified significant differences for Ca, Na, Rb, Zn, Cu, Cr, Se, 206Pb/204Pb, 207Pb/204Pb, 206Pb/207Pb and δ11B. PCA revealed that Cr, Se and Cu are the main contributors for discrimination by type of wine. 87Sr/86Sr and δ18O are region specific and not influenced by the winemaking process or storage. Thus, make good natural tracers for geographical origin of this region. HCA suggested a common profile in Port and Douro in white wines, for Sr and K, which should be further investigated.
