1987 Volume 82 Issue 8 Pages 592-594
The components of wines in the Tohoku district were investigated.
1. White wines
1) They showed the high contents of alcohol and non-volatile components and low buffer capacity compared with the foreign wines.
2) The strongest correlation was obserbed between the contents of K and the total sulfer dioxide, the light absorbance and the contents of Cu, and the light absorbance and the total sulfer dioxide, respectively.
2. Rose wines
1) The strongest correlation was observed between the contents of total sulfer dioxide and the contents of alcohol, and the original extract and the light absorbance (420 nm, 460 nm), respectively.
2) The rose wines were classified into 3 types by the pattern of continuous light absorption spectrum (370-700 nm).
3. Red wines
1) The ratio of Ca/Mg of foreign wines showed below 1.0 but the wines of the Tohoku district showed over 1.0.
2) All of the mineral components expect K have posittive correlation with pH, buffer capacity and the light absorbance.
3) The red wines were classified 3 types by the pattern of continuous light absorption spectrum (370-700 nm).
