Impact of Soil Properties on Variability of Iron Content in Wines from Tohani Vineyard

摘要

Knowledge of metal content from wines is crucial for winemakers and consumers, as well. With respect to quality and safety of wine, because of nutritional value or toxicological effects of metals in wine, analysis of metals present a particular interest. The aim of the present research was to evaluate the content of mobile iron from vineyard soil, total iron from grapes and wines from Tohani area, Romania. Other objectives were to correlate the mobile iron content with soil pH values, active CaCO3 and to study the influence of crop year and variety on iron content from grapes and wines (Feteasca Alba, Riesling Italian, Sauvignon Blanc, Tamaioasa Romaneasca, Busuioaca de Bohotin and Feteasca Neagra). All wine samples contain iron at levels much lower than concentrations that would produce undesirable effects on wine quality (cloudiness, color change), the highest value being found for rose wine Busuioaca de Bohotin (2.642 mg/L).