Minerals in Plasma and Urine and Gustatory Function Tests for Salt in a Group of Healthy Young Men

Detection threshold for salt (NaCI) and discrimination between two levels of NaCI concentration (0.6 and 0.7%) in foods, and their relation to some selected biochemical parameters in plasma and urine (Zn, Na, K, Mg, Ca, Se for plasma and urine, Cu and retinol binding protein for plasma) were investi...

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Bibliographic Details
Published in:Journal of Nutritional Science and Vitaminology 1987, Vol.33(4), pp.289-297
Main Authors: SUZUKI, Tsuguyoshi, ISHIDA, Hiromi, SUZUKI, Hisano, HONGO, Tetsuro, KOBAYASHI, Kanae, YOSHINAGA, Jun, IGAWA, Shoji
Format: Article
Language:English
Subjects:
Adult
calcium
Calcium - blood
Calcium - urine
copper
Copper - blood
detection threshold
discrimination
Humans
magnesium
Magnesium - blood
Magnesium - urine
Male
Metals - blood
Metals - metabolism
Metals - urine
minerals
Osmolar Concentration
plasma
potassium
Potassium - blood
Potassium - urine
Regression Analysis
retinol binding protein
Retinol-Binding Proteins - blood
Retinol-Binding Proteins, Plasma
salt concentrations
selenium
Selenium - blood
Selenium - urine
sodium
Sodium - blood
Sodium - urine
Sodium Chloride
Taste - physiology
taste of salt
Taste Threshold - physiology
urine
zinc
Zinc - blood
Zinc - urine
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Summary:Detection threshold for salt (NaCI) and discrimination between two levels of NaCI concentration (0.6 and 0.7%) in foods, and their relation to some selected biochemical parameters in plasma and urine (Zn, Na, K, Mg, Ca, Se for plasma and urine, Cu and retinol binding protein for plasma) were investigated in 15 healthy male college students. No subject failed to discriminate the NaCI concentrations in more than 50% of the tests. The rate of correct discrimination (RCD) was not associated with plasma Zn (P-Zn), plasma retinol binding protein (PRBP), urinary potassium (U-K) or urinary sodium (U-Na), which significantly correlated with RCD in our previous study, while the detection threshold was significantly correlated with urinary Ca-Mg ratio (UCa/Mg), urinary Ca (U-Ca), U-Na, and urinary Mg. In the stepwise multiple regression analysis, U-Ca/Mg, plasma Ca, plasma Na, and RCD were selected as significant independent variables. These indicate that the status of minerals such as Na, Ca, and Mg is related to the gustatory function. One possible explanation for the discrepancy between the present and previous results is the elevated P-Zn and P-RBP levels in the present subjects.
ISSN:0301-4800
1881-7742
DOI:10.3177/jnsv.33.289