Scientific study of <sup>13</sup>C/<sup>12</sup>C carbon and <sup>18</sup>O/<sup>16</sup>O oxygen stable isotopes biological fractionation in grapes in the Black Sea, Don Basin and the Western Caspian regions
Journal: BIO Web of Conferences
Year: 2017

The report presents the results of a study of carbon and oxygen stable isotopes in carbohydrates and intracellular water of red and white grapes of 2016 wine-growing season in the Crimean peninsula areas, South-west coast of the Greater Caucasus, the Don basin and the Western Caspian region. The mass concentration of reducing sugars in the studied grape samples has been from 17.5 to 25.0 g/100 ml, titrated acids concentration (based on tartaric acid) – from 6.0 to 9.1 g/l, the buffer capacity 34