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Information × Registration Number 0219U000389, 0116U001174 , R & D reports Title Development of a system of quality criteria of grapes as the basis for improving the technology of table wines popup.stage_title Head Pashkovskiy Oleksandr Ihorovich, Registration Date 29-01-2019 Organization , Wine Making named after V.E.Tairov popup.description2 To assess quality, basic and special criteria of grape chemical composition, in particular, carbohydrate-acid, phenolic and aromatic complexes, were used. Among the basic criteria for the chemical composition of grapes, we determined mass concentration of sugars, titrated acids, pH, amino nitrogen and calculated indicators — technical maturity and glucoacidimetric. Among the special indicators of the phenol complex, mass concentration of total monomeric and polymeric substances, technological reserve, macerating capacity and degree of extraction of phenolic substances during pressing of whole berries, absolute and relative enzymatic activity of o-diphenol oxidase were determined. Aromatic maturity of grapes was determined by organoleptic evaluation of berry skin and pulp, as well as determining the concentrations of free and glycosylated forms of terpene alcohols using steam distillation and gas chromatography. Product Description popup.authors Кована Олена Олегівна Пашковський Олександр Ігорович Тарасова Вікторія Вікторівна popup.nrat_date 2020-04-02 Close