PMID: 6537870Jan 1, 1984Paper

Evaluation of the protein quality of an isolated soy protein in young men: relative nitrogen requirements and effect of methionine supplementation

The American Journal of Clinical Nutrition
V R YoungW M Rand

Abstract

The protein nutritional value of an isolated soy protein (Supro-620) was evaluated in a series of nitrogen balance studies in healthy young male MIT students. Experiment 1 involved giving eight subjects graded intakes of the isolated soy protein while seven additional subjects received egg protein. Mean nitrogen intake required for N balance for the isolated soy protein and the egg protein were not significantly different (p greater than 0.1). In experiment 2, nine subjects received soy and the effects on N balance at various levels of L-methionine supplementation were studied. In experiment 3 eight subjects each were studied at two nitrogen intake levels of isolated soy protein/kg/day with methionine supplementation, and an unsupplemented egg protein period included. Results from experiment 2 and 3 at an 82 mg N/kg/day test level showed that N balance for 1.6% supplementation was significantly below that of unsupplemented egg while 1.1% and unsupplemented soy were indistinguishable from egg. No beneficial effects of methionine supplementation were observed when the test nitrogen intake level was 128 mg N/kg/day. These results indicate that for healthy adults, the isolated soy protein is of high nutritional quality, comparable ...Continue Reading

Citations

Dec 29, 2006·Nutrition Journal·Robert M BlairAaron Tabor
Jan 1, 1989·Nutrition Research Reviews·D J MillwardJ P Rivers
Mar 1, 1997·Journal of Biomedical Science·S.-C. Lu, P.-C. Huang
Dec 25, 2002·The American Journal of Clinical Nutrition·William M RandVernon R Young
Oct 9, 2007·The American Journal of Clinical Nutrition·Mohammad A HumayunPaul B Pencharz
Dec 1, 2003·Nutrition Research Reviews·Paul J Moughan
Jan 6, 2018·Nutrients·Gianluca Rizzo, Luciana Baroni
Jul 3, 2013·Nutrition Reviews·Yves Ingenbleek, Hideo Kimura
May 17, 2006·The Journal of Nutrition·Yves Ingenbleek
Oct 25, 2011·Journal of Agricultural and Food Chemistry·Glenna J HughesCharles S Schasteen
Nov 28, 2017·Nutrition, Metabolism, and Cardiovascular Diseases : NMCD·C AgnoliS Sieri

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