Biologically valuable components of grape stems

¹ All-Russian National Research Institute of Viticulture and Winemaking "Magarach" RAS, Kirova street 31, Yalta, 298600, Russian Federation
² V.I. Vernadsky Crimean Federal University, Prospekt Vernadskogo 4, Simferopol, 295007, Russian Federation
³ Kherson State Pedagogical University, st. Universitetskaya, 27, Kherson, 273003, Russian Federation
⁴ Saint Petersburg State University of Economics ; St. Petersburg, nab. Griboyedov Canal, 30-32 liter А, 191023, Russian Federation
⁵ Herzen University, St. Petersburg, nab. Moika River, 48, 191186, Russian Federation

¹ Corresponding author: oleinikov1@mail.ru

Abstract

The current problem of recycling winemaking waste is largely determined by the lack of technological cycles and waste-free technology schemes that can ensure the rational use of natural resources, including grape stems, when creating functionally new composite compositions designed to support human immunity and health. The most effective way to recover raw materials from grape stems is to produce extracts from them. As part of the study, the qualitative and quantitative phenolic composition of grape stem extracts was established. The methodology and technological regimes for the preparation of grape stems, as well as the ranges for varying the content of biologically valuable components in extracts from the stems, have been established. The use of the proposed scheme for obtaining extracts will allow us to separate the process of extracting the components of grape stems from infusion and will allow us to develop a number of technological advantages: targeted regulation of the quality of grape processing products, more complete use of raw materials, and reduction of losses of basic and auxiliary materials.