Phenolic compounds and antioxidant properties of some white varieties of grape wines spread in Western Georgia
2018
The content of phenolic compounds and antioxidant properties of wines made of five varieties of white grapes were studied in three regions of Western Georgia (Adjara, Imereti and Samegrelo). Using the UPLC-MS method the (-) Epicatechine (m/z-289), Quercetin-3-glucoside (m/z-463), Quercetin-3-ramnoside (m/z-447), Quercitrin-3-glucuronide (m/z-477) and Procyanidin B2 (m/z-577) were identified. With the help of the spectral methods the total amount of phenols, catechines and flavonoids was defined in the wines of all five varieties of grapes and their antioxidant properties were established. It was found that wines produced from Tsolikouri and Tsitska grapes are characterized by phenolic compound content and antioxidant action.
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