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Int J Food Sci Nutr. 2008 Mar;59(2):123-33.

Composition of the non-protein nitrogen fraction of goat whole milk powder and goat milk-based infant and follow-on formulae.

Author information

1
AgResearch, Private Bag 3123, Hamilton, New Zealand. colin@dgc.co.nz

Abstract

The non-protein nitrogen fraction of goat whole milk powder and of infant and follow-on formulae made from goat milk was characterized and compared with cow milk powder and formulae. Goat milk infant formula contained 10% non-protein nitrogen, expressed as a proportion of total nitrogen, compared with 7.1% for cow milk formula. Goat follow-on formula contained 9.3% and cow 7.4% non-protein nitrogen. Urea, at 30%, was quantitatively the most abundant component of the non-protein nitrogen fraction of goat milk and formulae, followed by free amino acids at 7%. Taurine, glycine and glutamic acid were the most abundant free amino acids in goat milk powders. Goat milk infant formula contained 4 mg/100 ml total nucleotide monophosphates, all derived from the goat milk itself. Goat milk has a very different profile of the non-protein nitrogen fraction to cow milk, with several constituents such as nucleotides at concentrations approaching those in human breast milk.

PMID:
17852511
DOI:
10.1080/09637480701425585
[Indexed for MEDLINE]

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