Bioavailability of zinc in infant cereals
1979
Shah, B.G. | Giroux, A. | Belonje, B.
Using total femur zinc as the indicator, the bioavailability of zinc in barley, rice, and soy-based infant cereals was determined in weanling male Wistar rats. The basal diet consisted of 25% egg white solids and .6 micrograms zinc per gram. The cereals were graded at 3 levels to supply 3-12 micrograms/g zinc, with and without supplementary iron. Added iron from sodium iron pyrophosphate had no effect on the bioavailability of zinc from zinc sulphate. The responses for the three cereals were linear. The regression lines representing them and the standard source did not have a common intercept. Cereal containing soy protein was a better source of zinc than the barley or rice cereals. No correlation with the actual iron-precipitable phytate phosphorus content or reported crude fiber content was shown.
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