Study of the organoleptic profile of rosé wines with geographical status

The aim of the study is to investigate the organoleptic profile of dry rosé wines with geographical indication produced in the Krasnodar and Rostov Regions. The studied samples of rosé wines with PGI represented the following viticultural zones: Kuban, the Don Valley, and the following districts: Kuban, Novorossiysk, Semigorye, the Afips River Valley, Kuban, and the Taman Peninsula. Wines from the Kuban geographical zone and its districts were characterized by a color intensity ranging from 0.705 to 1.813, which is consistent with the high proportion of red pigments in these samples (44 % on average). In the studied samples, the color hue index ranged from 0.712 to 1.261. The distribution of the main pigments in the rosé wines was different: in three of them, produced in the Krasnodar Region, it was shifted towards an increase in yellow pigments, with the protected geographical indication Kuban. The Afips River Valley dry rosé Aurora 2022, the ratio of yellow to red pigments was close to 1 : 1, while in the other samples, the proportion of red pigments was 0.9–9.8 % greater than yellow. The proportion of blue pigments in the overall color distribution was 3.9–8.9 %. A study of wine color using the CIELab system provided a more comprehensive picture of differences within the rosé wine family. Using a mathematical expression for color will allow for the accumulation of data on wine color characteristics in numerical form and their processing to identify differences, including facilitating geographic identification. The use of descriptors to describe the organoleptic properties of wines, such as aroma and flavor, also allowed for a more detailed assessment of these characteristics and the identification of common flavor nuances, such as a harmonious fullness of flavor and the presence of vibrant berry aromas, regardless of the grape variety or geographical region.