Tymofyeyev R. Development of a process for the production of fortified wines by using grape ethanol

Research subjects: raw material base for the production of grape ethanol, grape ethanol, wines produced by use of grape ethanol Research objectives: Verification of the possibility and development of a process to use nonrectified grape ethanol, including ethanol from enological wastes, in the production of fortified ordinary wines. Methods: Mathematical modelling, HPIC, conventional methods to analyse the composition of wines and spirits Theoretical and practical results: The physico-chemical mechanism of ethanol purification by means of grape seeds has been highlighted. Theoretical support and a methodology have been elaborated pertaining to the modelling, designing and optimization of the composition of blending wines and other beverages. Modes of processes for the production of fortified wines using grape ethanol have been theoretically supported. Norms and technological documents regulating the production of wines using nonrectified grape ethanol have been developed and approved by the authorities of the Crimean wine industry. A package of applied programs for the modelling, designing and optimization of the composition of blended wines and other beverages has been developed. Novelty of introduced: It has been established, for the first time, that during treatment of ethanol with grape seeds, its impurities are extracted by grape oil through the lignin coat of the grape seed, and that the wine volatile complex transformation by using nonrectified grape ethanol after such preliminary treatment is considerably faster than by using rectified ethanol. A unified classification of tasks and mathematical models for the modelling, designing and optimization of the composition of blended wines and other beverages have been suggested. Implementation degree: The process has been tested on an industrial scale on the wine-growing state farm "Kachinski" (Sevastopol Agro-Industrial Association "Alkadar"). Effectiveness: The process will enable an enlarged assortment of vintage products, improvement of the economical situation of the coutry's wine industry and an efficient use of the indusry's potentials. Sphere, sector of implementation: winemaking, production of alcohol and soft beverages