Effect of Dietary Soy Protein Isolate Level on the Ratio of N^1-Methyl-2-pyridone-5-carboxamide plus N^1-Methyl-4-pyridone-3-carboxamide to N^1-Methylnicotinamide Excretion in Rats(Food & Nutrition)

概要

論文の詳細を見る
A 10%, 20% or 40% soy protein isolate (SPI) diet containing sufficient niacin was fed to rats for 9 days and urine was collected for the last 2 days. The ratio of N^1-methyl-2-pyridone-5-carboxamide (2-py) plus N^1-methyl-4-pyridone-3-carboxamide (4-py) to N^1-methylnicotinamide (MNA) excretion increased with increasing in the dietary SPI level; this ratio in the groups with the 10%, 20% and 40% SPI diets was 0.56 ± 0.08, 1.04 ± 0.34 and 10.33 ± 1.60, respectively. The great increase in the ratio of 2-py plus 4-py to MNA excretion on changing the 20% SPI diet to the 40% SPI diet was attributed to the great decrease in MNA excretion in the group with the 40% SPI diet compared with the group with the 20% SPI diet. From these results and our previous results [Agric. Biol. Chem., 52, 1765 (1988)], it is suggested that the 2-py+4-py/MNA excretion ratio can be used for assessment of the protein nutrition.
社団法人日本農芸化学会の論文
1989-04-23