Fruit growing
and viticulture of South Russia

Annotation

The production of competitive geographical denomination wines, that can solve import substitution issues and improve the quality of wines, should become one of the promising direction for the development of Daghestan wine-making. In this regard, there is a need to produce the high-quality wines from grape varieties with high biological value The production of wines raising the prestige of the Republic, fixed under the term � wines of protected geographical names, must also be supported, as well as the use of local grape varieties as well as raw materials for their production, along with introduced ones. It is made a comparative study of experimental samples of wine materials, obtained from grapes of local technical the Gimra Novaya, Fioletta varieties, and introduced variety of Pervenets Magaracha, grown in the Southern plain zone of Daghestan. Physical and chemical parameters were determined by standard methods used in anoxemia. The study of phenolic substances and vitamins was carried out using capillary electrophoresis on the "Kapel 104T" device. It was found that the wine material from the Gimra Novaya grape variety significantly exceeds other experimental samples in the amount of phenolic substanced (3361 mg/dm3 ), content of ascorbic (100.13 mg/dm3 ), orotic (27.45 mg/dm3 ), caffeic (29.90 mg/dm3 ), gallic acids (38.80 mg/dm3 ) and the total amount of biologically active substances (226.89 mg/dm3 ). The results of research carried out have revealed that the local grape varieties of Gimra Novaya and Fioletta have some advantages in terms of the content of biologically active substances, compared to the introduced variety of Pervenets Magaracha and can be used for the preparation of high-quality extraordinary red and pink blended wines.