Fruit growing
and viticulture of South Russia

Annotation

The purpose of research was improvement of the production technology of cognac distillates on the basis of their fractionation and the accelerated maturing. The object of research are the cognac wine materials, prepared from mixture of the European grapes varieties. In the process of research of cognac distillates and cognacs the standard analysis methods regulated by standard documentation, and also gas chromatographic methods with use of the gas-liquid Agilent Technology 6890 chromatograph are used. The chemical composition of cognac distillates is researched, as a result the criterions of quality of cognac spirits for production of cognacs of various categories are established. Their quantitative and qualitative assessment is given, the requirements to young cognac distillates taking into account the directions of their use are developed. The optimum ranges of the content in the young cognac distillates of the main groups of volatile impurity are established. The mechanism of regulation and the schematic diagram of distillate fractionation process at spirit raw distillation are offered. It is established that the endurance of the cognac spirits processed by heat in the oak barrels for 3,5 and 7 years promoted the formation of higher (on 0,3-0,5 points) qualities of experimental spirits. As a result of the conducted research the production technology of cognac distillates was improved. The main stages of the offered technology are: the fractionation of cognac distillate in the process of distillation of alcohol raw on three distillate fractions; the accelerated maturing of cognac distillates at thermal treatment; the endurance of the processed cognac distillates in contact with oak wood. The apparatus and technological scheme of the advanced production technology of cognac spirits on the basis of their fractionation and the accelerated maturing are developed. The technological instruction for production of cognac spirits is developed and approved. The economic effect of its introduction was 129200 rub/one thousand decalitres.