Qualitative composition of anthocyanin dye obtained from black currant berries in various methodsNatalya Chesnokova, Alexander Zakharenko, Yury Prikhod'ko, Alla Kuznetsova, Tatyana Ershova and Tamara LevchukE3S Web of Conf., 462 (2023) 02046DOI: https://doi.org/10.1051/e3sconf/202346202046