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How much zinc is in Fairlife milk? 

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The identification of this biologically active protein in human milk establishes in part the basis for the species difference in zinc bioavailability.
Between colostrum and transitional milk, a sharp decrease in zinc content was observed, whereas copper and iron contents remained constant. All of these results make it clear that standardized sampling protocols are needed in order to obtain comparable values.
It is proposed, based upon these binding data, that the association of zinc with low molecular weight components of milk is related in part to both protein content and composition and the relative zinc concentrations.
Redistribution and possible alterations in the zinc-binding pattern during processing in human milk banks may reduce zinc bioavailability to the infant.
These results indicate that milk zinc concentrations of random samples of human milk collected at any time of the day or of the feed can be accepted as representative for that day.
Open accessJournal ArticleDOI
P. Blakeborough, D. N. Salter, M. I. Gurr 
78 Citations
The results indicated that zinc is bound to different macromolecules in cow's and human milk.
Assuming similar absorption of zinc in rats and humans, our experimental results provide some guidelines for estimating the quantity of zinc that would actually be absorbed from various types of milk.
The proposed method suffers from very few interferences and has been applied satisfactorily to the determination of zinc in several commercially available milk samples.

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