Fruit growing
and viticulture of South Russia

Annotation

The grape-growing industry is a priority in the agro-industrial complex of Daghestan. At present, when special attention is paid to creating conditions for the production of "protected geographical indication" wines, it is necessary to expand the research of grape raw materials used for their production. In this regard, in the Republic of Daghestan the study of nutritional and technological properties of new autochthonous grape varieties, along with introduced ones is actual, to recommend the production of wines from them that can increase the prestige of local wine products. It is determined that the qualitative composition and quantitative content of pools of aroma-producing substances in red and rose wine materials made from grapes of technical local varieties Gimra Novaya and Fioletta, as well as the Pervenets Magaracha (harvest 2019), grown in the conditions of the Derbent district of the Republic of Daghestan on the plantation of the Dagestan Selecting Testing Station of Viticulture and Horticulture � branch of the Federal State Budget Scientific Institution �North Caucasian Federal Scientific Center of Horticulture, Viticulture, Winemaking�. Aroma-producing substances were determined on a gas chromatograph �Crystal 2000M� (RF). A significant amount of carbonyl compounds (325.48 mg/dm3 ) and esters (252.94 mg/dm3 ) was found in the rose wine material produced from the Pervenets Magaracha and Fioletta varieties. The highest total number of higher alcohols (1871.37 mg/dm3 ) and aromatic components (2588.68 mg/dm3 ) was found in the wine material from the red variety Gimra Novaya. A high concentration of 2,3 butylene glycol and a higher alcohol, isoamyl alcohol, was noted. The total mass concentration of volatile acids in the studied experimental samples of wine materials was 439.56-781.28 mg/dm3 . It is determined that the natural conditions of the southern zone of Daghestan are favourable for the cultivation of grapes of autochthonous varieties Gimra Novaya, Fioletta and introduced variety Pervenets Magaracha. Using them as raw materials for obtaining high-quality wine materials will allow you to form in their bouquet the tones of smoky prunes, hints of the taste of pomegranate and blackthorn fruits.