玉米氨基酸失衡与亮氨酸过量的作用。
Corn amino acid imbalance and the role of leucine excess.
作者信息
de Angelis R C, Terra I C
出版信息
Arch Latinoam Nutr. 1983 Jun;33(2):271-82.
A study was conducted using two experimental models with weanling rats of the Wistar strain fed isocaloric diets containing 7% protein, Model I: two genetic varieties of maize were used; common corn (CC) or opaque-2-corn (M); and Model II: casein, 7% protein used without nicotinic acid in the diet in order to enhance the tryptophan limiting conditions like in the CC diet of Model I. PER, nitrogen balance, urinary urea and hepatic fat were determined. The results suggest that the imbalance of CC protein is related to lysine and tryptophan limitation, although the leucine excess content also plays an important role.
使用两种实验模型对Wistar品系的断乳大鼠进行了一项研究，这些大鼠喂食含7%蛋白质的等热量日粮。模型I：使用了两种玉米遗传品种；普通玉米（CC）或不透明-2玉米（M）；模型II：使用酪蛋白，日粮中7%蛋白质且不含烟酸，以增强色氨酸限制条件，如同模型I的CC日粮。测定了蛋白质效率比值（PER）、氮平衡、尿尿素和肝脏脂肪。结果表明，CC蛋白质的不平衡与赖氨酸和色氨酸限制有关，尽管亮氨酸过量含量也起重要作用。
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