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Año 2011, Volumen 61 - Número 4
Año 2011, Volumen 61
Número 4


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HOME > EDICIONES > Año 2002, Volumen 52 - Número 4

Trabajos de Investigación
Concentraciones de calcio, magnesio, sodio y potasio en leche materna y fórmulas de inicio

E.M. Rodríguez Rodríguez, M. Sanz Alaejos y C. Díaz Romero.
Departamento de Química Analítica, Nutrición y Bromatología. Universidad de La Laguna, La Laguna,Tenerife, España.

SUMMARY
Concentrations of calcium, magnesium, sodium and potassium in human milk and infant formulas

Concentrations of calcium, magnesium, sodium and potassium were determined in 55 samples of mature human milk from Canary women and 5 samples of powdered infant formula. According to the literature our data fell within the normal intervals described for each kind of milk. The mean concentration of Ca, Mg, Na y K of powdered infant formula was higher than those concentrations found in the human milks. Significant differences among the concentrations of Ca, Mg and Na for the milks of the considered mothers were observed. Only the Ca intakes for infants fed with human milk were lower than those requirements recommended by the Food and Nutrition Board (1989). However, the infants fed with powdered infant formula had an adequate intake of all the studied metals. A progressive decrease of the Na, K and Ca concentrations with the lactation stage was observed. Maternal age, parity and sex of the newborns did not affect the metal concentrations significantly.

Key words: Metals, human milk, powdered infant formula.






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