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Issue 1, 2014
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Evidence for a possible dietary effect on the isotopic composition of Zn in blood via isotopic analysis of food products by multi-collector ICP-mass spectrometry

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Abstract

In this work, the hypothesis of a possible dietary effect on the isotopic composition of Zn in blood from populations with different feeding habits, i.e. lacto-ovo vegetarians and omnivores, was investigated through isotopic analysis of Zn in common food products by multi-collector ICP – mass spectrometry (MC-ICP-MS). Several certified reference materials (CRMs) were also included in the sample set for comparison purposes. For these CRMs, the isotopic composition of Zn is expressed as δ-values, calculated with respect to both IRMM-3702 and JMC-ZnLyon, as isotopic standards. The range of δ66Zn values observed in food products was approximately 1.9‰. In general, vegetables, cereals and derived products showed an enrichment of the heavier Zn isotopes, whereas a depletion was observed in products of animal origin (meat, fish, egg and semi-skimmed milk), relative to human blood samples. Mussel, however, showed a significant enrichment of the heavier isotopes, which is hypothetically attributed to its accumulation behaviour. Thus, the lower δ66Zn values found in food products of animal origin appear to be reflected in the lower δ66Zn value observed in blood from an omnivorous population compared to that for a vegetarian population.

Graphical abstract: Evidence for a possible dietary effect on the isotopic composition of Zn in blood via isotopic analysis of food products by multi-collector ICP-mass spectrometry

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Publication details

The article was received on 07 Sep 2013, accepted on 23 Oct 2013 and first published on 23 Oct 2013


Article type: Paper
DOI: 10.1039/C3MT00244F
Metallomics, 2014,6, 139-146

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    Evidence for a possible dietary effect on the isotopic composition of Zn in blood via isotopic analysis of food products by multi-collector ICP-mass spectrometry

    M. Costas-Rodríguez, L. Van Heghe and F. Vanhaecke, Metallomics, 2014, 6, 139
    DOI: 10.1039/C3MT00244F

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