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Zinc absorption in adult men from a chicken sandwich made with white or wholemeal bread, measured by a double-label stable-isotope technique

Published online by Cambridge University Press:  09 March 2007

Susan J. Fairweather-Tait ,
Thomas E. Fox ,
S. Gabrielle Wharf ,
John Eagles  and
Hugh Kennedy
Susan J. Fairweather-Tait
Affiliation:
AFRC Institute of Food Research, Norwich Research Park, Colney, Norwich NRI 3SR
Thomas E. Fox
Affiliation:
AFRC Institute of Food Research, Norwich Research Park, Colney, Norwich NRI 3SR
S. Gabrielle Wharf
Affiliation:
AFRC Institute of Food Research, Norwich Research Park, Colney, Norwich NRI 3SR
John Eagles
Affiliation:
AFRC Institute of Food Research, Norwich Research Park, Colney, Norwich NRI 3SR
Hugh Kennedy
Affiliation:
AFRC Institute of Food Research, Norwich Research Park, Colney, Norwich NRI 3SR
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Abstract

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Eleven fasted adult men consumed a chicken meat sandwich made with white or wholemeal bread, extrinsically labelled with 2 mg 67Zn, on two different occasions. Immediately after eating the sandwich they were given an intravenous injection of 1·5 mg 70Zn. True Zn absorption (which was approximately 7% higher than apparent absorption) was determined by the faecal balance technique by making an allowance for endogenous excretion from measurements of faecal excretion of 70Zn. There was no significant difference in mean true Zn absorption from the white or wholemeal bread sandwich, 33·6 and 25·4% respectively. It was concluded that the substitution of wholemeal for white bread does not reduce Zn absorption from meat-based sandwiches.

Keywords

Zinc absorptionChicken meatBreadStable isotope
Type
Absorption of Inorganic Nutrients
Information
British Journal of Nutrition , Volume 67 , Issue 3 , May 1992 , pp. 411 - 419
Copyright
Copyright © The Nutrition Society 1992

References

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