Research of quality characteristics in grape wines from different aging vintages, grape varieties

In order to compare wines from different years, different grape varieties between physicochemical properties and aroma components, the physicochemical index and aroma substances were determined.The results showed that the dry wine p H, dry extract, chromaticity values, total phenolic content was significantly lower than that of dry red wine, dry red hue was significantly higher than that of wine ( p < 0.05) .54 kinds of aroma components were identified from two wines and 14 kinds of them were both detected in two samples, esters had most species, and the highest relative content, and was the main aroma. In different years, varieties of grape wine aroma types, main aroma components and relative content were different.