G B Fransson

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The distribution of iron among various fractions of human milk was determined by gel filtration, ultrafiltration, and atomic absorption spectrophotometry. Total iron varied between 0.26 and 0.73 microgram/ml; 1.5 to 46% of the iron was bound to the lipid fraction and 18 to 56% was found in a low molecular weight fraction. Only a small amount of iron was(More)
Lactoferrin is an iron-binding protein present in high concentrations in human milk. The efficacy of supplementing iron bound to lactoferrin to iron-deficient and iron-sufficient young mice was evaluated in comparison with supplementation of iron as iron chloride. Mice fed a nonsupplemented milk diet (approximately 1 mg Fe/L) for 4 weeks had a microcytic,(More)
The trace elements iron, copper, and zinc and the minerals calcium and magnesium have been found associated to human milk fat. After solubilization of milk fat globule membranes with detergent, the major part of these elements within the fat fraction were found in the more hydrophilic outer fat globule membrane: Fe 61%, Cu 73%, Zn 64%, Ca 67%, and Mg 71%.(More)
Human milk was fractionated and analyzed for the distribution of copper, zinc, calcium, and magnesium among various fractions. In whole milk the concentration of copper was 0.27 +/- 0.13 micrograms/ml, zinc 1.10 +/- 1.19 microgram/ml, calcium 241.2 +/- 61.9 microgram/ml, and magnesium 41.4 +/- 15.2 micrograms/. Most of the Cu, Zn, Ca, and Mg was found in(More)
The contents of iron, copper, zinc, calcium and magnesium were determined in human milk samples from 18 Ethiopian and 23 Swedish women. The Ethiopian women belonged to two groups with different socio-economic situations, a non-privileged and a privileged group. Both groups had an excessively high dietary iron intake--20 to 30 times that of the Swedish(More)
Summary: The concentration of iron in cow's milk, 0.40–0.59 μg/ml, was found to be very similar to that of human milk, 0.20–0.69 μg/ml. The copper concentration of cow's milk (0.06–0.09 μg/ml) is lower than in human milk (0.24–0.50 μg/ml) whereas the concentration of zinc is higher in cow's milk (3.23–5.15 μg/ml) than in human milk (1.16–3.83 μg/ml). Cow's(More)
Iron supplementation is recommended for formula-fed infants, and it is currently suggested that iron be supplemented in formulas at a minimum of 6 mg/L. A negative side effect of iron supplementation, however, may be a reduction in the absorption of elements with similar physicochemical properties. We investigated this possibility by evaluating the impact(More)