Transfer of Cesium and Potassium from Grapes to Wine

摘要

The food-processing transfer parameters of radioactive and stable cesium and radioactive potassium were determined from grapes to wine. The concentration of cesium in the pomace was higher than that in juice, as was the case of potassium. During white and rose wine fermentation, cesium concentration did not change significantly and potassium concentration decreased. These results suggest that the absorbance of cesium by yeast is much lower than that of potassium in the winemaking environment. The food-processing retention factors (Fr, content in wine/ content in grape) of radiocesium and stable cesium for red wine were generally higher than those for white wine, reflecting the yields of wine and the extraction of cesium during maceration.