Effect of Methionine Supplementation on Nitrogen Balance in Infants Fed a Low‐Cost Soy‐Oats Formula

摘要

ABSTRACTA nitrogen balance study, comparing a low‐cost soy‐oats infant formula with and without supplemental methionine, was carried out with infants of ages 3 ‐ 26 months at a single equivalent level of nitrogen intake (approximately 850 mg/kg/day). Nitrogen retention was found to be unaffected by methionine supplementation. Com‐ parison of data obtained in this study with previous research re‐ vealed that a critical value for intake of total L‐sulfur amino acids apparently exists in infants 3 ‐ 26 months of age, below which methionine supplementation will increase nitrogen retention, but above which it will not. This value appears to coincide with that of 49 mg/kg/day recommended for infan