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  • Title: Zinc, copper and iron content of milk from mothers of preterm and full-term infants.
    Author: Mendelson RA, Anderson GH, Bryan MH.
    Journal: Early Hum Dev; 1982 Apr; 6(2):145-51. PubMed ID: 7094852.
    Abstract:
    Complete 24-hour expressions of milk were collected over the first month of lactation from mothers giving birth at term (FT) and prematurely (PT). Samples were analyzed for Cu, Fe and Zn concentration. Composition of PT and FT milks was similar during the first 4 weeks of lactation, but the concentrations of each mineral were higher during the first week than during the fourth week. From these data, the intakes of premature infants fed their own mother's milk were estimated and the proportion which must be absorbed and retained in order to accumulate the amounts laid down in utero were predicted. On the basis of these estimates, preterm infants who retain 25% of the Zn and 35% of the Cu in PT milk would approximate in utero accumulations. However, the Fe content of PT milk is unlikely to provide for in utero accretion rates, even if 100% absorption as achieved.
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