Research of wines with geographical status produced by Shumrinka LLC

The purpose of research is to study white and red dry wines with a geographical indication produced by Shumrinka LLC for the content of cations, anions, microelements, phenolic compounds and color characteristics to identify the ranges of their variation. The characteristic content of potassium cations in white wines was in the range of 342-1110 mg/dm3, in red wines - 869-2070 mg/dm3. The ranges of variation in the mass concentration of chloride ions and sulfate ions in all wines studied were 9.8-28.5 and 188.3-821.3 mg/dm3. The established ranges of trace element content in the wines of a given manufacturer (strontium - 0.410-0.859 mg/dm3, rubidium - 0.373-1.806, titanium -3.614-6.415 μg/dm3) can be additional quality control indicators when assessing the geographical origin of wines and determining their compliance with the assessed typicality factors. The color composition of white wines is dominated by yellow-brown pigments, which is typical for aged wines. When comparing the color shade values of the studied wines, it was found that for white wines this indicator was at the level of 1.533-3.467, and for red wines - 0.667-0.870, therefore, anthocyanins played a significant role in the formation of the color of red wines, and condensed polyphenols played a significant role in the formation of the color of red wines. The results of a study of the color of wines, expressed in the values of color coordinates L*, a* and b* using the CIELab system, are presented. The L* coordinate (lightness) in white wines was at the level of 99.58-99.86, and in red wines it was in the range of 65.64-74.73. The cation-anion and microelement composition, mass concentration of coloring substances, optical characteristics and chromatic color coordinates of the wines under study reflected the characteristics of the production technology and the vineyard growing area.