Khramchenkova I. Development of the control system for the process of maturation of ordinary fortified white wines

Research subjects: ordinary fortified white wines. Research objectives: to develop an objective system enabling control of the maturation process of ordinary fortified white wines as they achieve the desired type and quality. Methods: standart and conventional methods for analysis of the chemical composition and properties of wine materials and wines. Theoretical and practical results: ordinary fortified white wines have been classified into four groups of maturity and ranges of bottling suitability (completion of type and guality formation) indices have been established established for each group. A system enabling control of the maturation process of ordinary fortified white wines has been developed. Methodological recommendations pertaining to the determination of bottling suitability of wines have been affirmed by the Ukrainian Academy of Agrarian Sciences. Novelty of introduced: peculiarities of the dynamics of color characteristics, phenolics and aroma-forming complexes of ordinary fortified whit e wines during maturation as a function of the initial level of phenolics and the proportion of polymeric flavanoids have been found out. Regularities referring to the variations of the ratios of olfactory components of ordinary fortified white wines during maturation have been established. the functional interrelationship between the values of optical characteristics and their ratios on the one hand and variations of the chemical composition and sensory characteristics of wines during their maturation on the other hand has been revealed. Implementation degree: industrial trials have been carried out on the state farms "Koktebel", "Malorechenski" and "Izoumroudny" (Crimea) and at the enterprise "Bachus" (Kazakhstan). Effectiveness: improvement of the quality of ordinary fortified white wines. The economic effect amounts to 24,5 hrn. per a day of the process. Sphere, sector of implementation: wine industry.