Niacin/pantothenic acid/protein interrelationships affecting the nutritive values of winter wheat for humans
1981
Ünver. B. | Kies, C. | Fox, H.M.
Nitrogen balance and urinary niacin and pantothenic acid excretion were measured in 9 subjects fed protein wheat bread diets at 3 levels of nitrogen, either supplemented with niacin or pantothenic acid, or without added vitamins. Increased nitrogen intake was associated with significant increases in nitrogen retention. Reductions in nitrogen loss were also observed with niacin supplementation, whereas at low nitrogen intake pantothenic acid supplementation slightly depressed nitrogen balance; at high nitrogen intake, pantothenic acid tended to improve nitrogen balance. Supplementation of either vitamin resulted in increased urinary excretion of that vitamin. Data suggested a 3-way interrelationship among nitrogen balance, niacin excretion, and pantothenic acid intake. As protein intake increases, other nutrients may become proportionally less adequate so that the effects of supplementation on nitrogen balance are more pronounced.
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