Development of the technology of obtaining wine dye from dark varieties of grape Najmiddin Muminov, Mirzamad Odinayev, Mohigul Оdilova and Nurbek Khayrullayev BIO Web Conf., 130 (2024) 06016 Published online: 09 October 2024 DOI: 10.1051/bioconf/202413006016