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Intrinsic labelling of different foods with stable isotope of zinc (67Zn) for use in bioavailability studies

Published online by Cambridge University Press:  09 March 2007

Thomas E. Fox ,
Susan J. Fairweather-Tait ,
John Eagles  and
S. Gabrielle Wharf
Thomas E. Fox
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
Susan J. Fairweather-Tait
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
John Eagles
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
S. Gabrielle Wharf
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
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Abstract

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Intrinsically-labelled foods are required to validate extrinsic-labelling techniques used to study the bioavailability of trace elements. Wheat (Triticum aestivum), peas (Pisum sativum), goat's milk, human milk, eggs and chicken meat were selected for intrinsic-labelling studies with 67Zn. Peas were grown hydroponically in enriched nutrient solution and wheat was grown in sand and watered with enriched nutrient solution. Some of the wheat plants were also given stem injections of 67Zn solution. Eggs and chicken meat were prepared by administering 67Zn intravenously to chickens, and human milk was collected after an oral dose of 67Zn in a cola drink. All the foods investigated were sufficiently enriched with 67Zn for Zn absorption studies except wheat prepared by the sand and water-culture method.

Keywords

Intrinsically-labelled foodsBioavailabilityZn
Type
Bioavailability and Utilization of Inorganic Nutrients
Information
British Journal of Nutrition , Volume 66 , Issue 1 , July 1991 , pp. 57 - 63
Copyright
Copyright © The Nutrition Society 1991

References

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