Abstract
We collected the samples of usual diets from students of Sagami Women's University, determined samples of model diets in five days and investigated the nutritive balances of both. We measured the concentration of sodium ion and potassium ion using the salt meter, sodium ion meter and potassium ion meter compared them with calculated values by standard tables of food composition in Japan.. The value of salt measured with the salt meter was hightest, caluculated ones was the next hightest, and the one measured with sodium ion meter was the lowest in usual diets and model diets. There is a positive correlation with the coefficient r of correlation 0.641 between the value of salt measured with sodium ion meter and the one with salt meter. Also a big positive correlation with r=0.845 is between the value of salt measured with sodium ion meter and the calculated one. The value of potassium measured with potassium ion meter was lower than the calculated value. Using the experimentally obtained expressions, we can estimate more precise values of total amount of the sodium chloride from calculated values and the one measured with salt meter. We can give the method of nutritive guidance for mineral balance.
