STUDY OF PHYSICO-CHEMICAL PARAMETERS OF WINE DISTILLATE AND RECTIFICATION FROM CVETOCHNIY GRAPEVINE VARIETY

The results of study of physico- chemical parameters of wine distillate and rectification from white grapes of Cvetochniy variety of ARRIV&W’s breeding are presented. The process of distilling wine material was carried out in two stages. Primary distillation to obtain raw alcohol was carried out on a distiller, and secondary distillation to obtain rectified alcohol was carried out on a small distillation unit with electric heating. It was found that during the primary distillation of Cvetochniy wine material for raw alcohol, the content of aroma-forming substances depended on the content of titrated acids and the varietal characteristics of raw material. Rectification made it possible to reduce significantly the concentrations of undesirable volatile components (isobutanol, isopentanol and others). According to the content of noble aroma-forming substances in the obtained distillation products, it was found that the grapes of Cvetochniy variety are suitable for preparation of strong drinks. The analysis of the data obtained allows us to establish the quality criteria of the finished rectification