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Publication
Mineral composition through soil-wine system of portuguese vineyards and its potential for wine traceability
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Advisor(s)
Abstract(s)
The control of geographic origin is one of a highest priority issue regarding traceability and
wine authenticity. The current study aimed to examine whether elemental composition can be used
for the discrimination of wines according to geographical origin, taking into account the effects of
soil, winemaking process, and year of production. The elemental composition of soils, grapes, musts,
and wines from three DO (Designations of Origin) and for two vintage years was determined by using
the ICP-MS semi-quantitative method, followed by multivariate statistical analysis. The elemental
composition of soils varied according to geological formations, and for some elements, the variation
due to soil provenance was also observed in musts and wines. Li, Mn, Sr and rare-earth elements (REE)
allowed wine discrimination according to vineyard. Results evidenced the influence of winemaking
processes and of vintage year on the wine’s elemental composition. The mineral composition pattern
is transferred through the soil-wine system, and differences observed for soils are reflected in grape
musts and wines, but not for all elements. Results suggest that winemaking processes and vintage
year should be taken into account for the use of elemental composition as a tool for wine traceability.
Therefore, understanding the evolution of mineral pattern composition from soil to wine, and how it
is influenced by the climatic year, is indispensable for traceability purposes
Description
Keywords
geographic origin geological material multi-element composition rare earth elements vinification
Pedagogical Context
Citation
Beverages 2018, 4, 85
Publisher
MDPI