University of Otago, New Zealand


Te Tari Hua-Ruanuku

Rain used to determine origin of milk

Tuesday 11 December 2012

Rain to milk

EmadResearch carried out by Ph.D candidate Emad Ehtesham on New Zealand milk powder was used to distinguish the origin of the milk to either the North or South Island. Geographical origin of New Zealand milk was determined by analyses of milk fatty acids’ hydrogen isotopes and further by comparing them to hydrogen isotopes of regional precipitation where milk was produced.

This technique could be used to identity counterfeit milk powder being sold internationally as a product of New Zealand.

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