Methionine fortification of a soy protein formula fed to infants
| Autor: | Ekhard E. Ziegler, Steven E. Nelson, Samuel J. Fomon, L. J. Filer, B B Edwards |
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| Rok vydání: | 1979 |
| Předmět: |
Male
Aging Nitrogen balance Calorie Medicine (miscellaneous) Biology Plant Proteins Dietary chemistry.chemical_compound Methionine Animal science medicine Humans Soy protein Nutrition and Dietetics Body Weight Infant Newborn Albumin Infant Blood Proteins Body Height Diet chemistry Food Fortified Urea Infant Food Soybeans medicine.symptom Breast feeding Weight gain |
| Zdroj: | The American Journal of Clinical Nutrition. 32:2460-2471 |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/32.12.2460 |
| Popis: | Data from study of nine normal full-term infants fed a soy isolate-based formula unsupplemented with methionine were compared with similar data from study of 10 similar infants fed the same formula supplemented with L-methionine and with data from previous studies of larger groups of infants receiving various other feedings. Food intake, growth, and serum chemical values were studied from 8 through 111 days of age. In addition, nitrogen balance studies were carried out. Statistically significant differences were as follows: lesser weight gain per 100 kcal by infants fed the unsupplemented soy isolate-based formula than by infants fed milk-based or other soy isolate-based formulas; lesser serum concentrations of albumin at age 28 days by infants fed the unsupplemented soy isolate-based formula than by breast-fed infants; greater serum concentrations of urea nitrogen by infants receiving the unsupplemented soy isolate-based formula than by those receiving the same formula supplemented with L-methionine. A number of other differences was noted but were not statistically significant. The results suggest that normal infants fed a formula providing 2.25 /100 kcal of a soy protein isolate not fortified with methionine performed less well during the first 6 weeks of life than did breast-fed infants and infants fed milk-based formulas or other soy isolate-based formulas fortified with methionine. The limiting nutrient appears to have been methionine. |
| Databáze: | OpenAIRE |
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