engleski

Influence of vintage on Cu, Fe, Zn and Pb content in some Croatian red wines

Knowledge of the content of heavy metals is important because of their impact on the stability of wine or on the health of consumers. The presence of heavy metals in wines is a consequence of action various factors such as conditions of cultivation and processing of grapes and production, stabilization or storage of wine. In this work determination of heavy metals (Cu, Fe, Zn and Pb) content in red wines was carried out. Selected wine was Plavac mali, Croatian autochthonous sort, produced by various producers during the three consecutive vintages. The aim of this work was to examine whether the wines produced in different vintage, and by various producers, vary according the content of heavy metals. To determination of heavy metals content, atomic absorption spectrometry (AAS) was used. Content of heavy metals ranged between 0, 235-1, 122 mg/L (Cu), 0, 809 – 6, 202 mg/L (Fe), 0, 266-2, 434 mg/L (Zn) and 0, 107 - 0, 3355 mg/L (Pb). Data analysis showed statistically significant differences only between producers for iron and copper content.

wine; vintage; heavy metals

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