Cadmium absorption and retention by rats fed durum wheat (Triticum turgidum L. var. durum) grain

A whole-body radioassay procedure was used to assess the retention and apparent absorption by rats of Cd in kernels of durum wheat (Triticum turgidum L. var. durum) harvested from plants grown hydroponically in 109Cd-labelled nutrient solution. Wholegrain wheat, containing 5 μmol Cd (570 μg)/kg dry...

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Bibliographic Details
Published in:British journal of nutrition 2003-04, Vol.89 (4), p.499-508
Main Authors: House, W. A., Hart, J. J., Norvell, W. A., Welch, R. M.
Format: Article
Language:English
Subjects:
Absorption
Analysis of Variance
Animals
Bioavailability
Biological and medical sciences
Biological Availability
Cadmium
Cadmium - administration & dosage
Cadmium absorption
Cadmium retention
Diet
Durum wheat
Feeding. Feeding behavior
Fundamental and applied biological sciences. Psychology
Gastrointestinal tract
Human subjects
Hydroponics
Intestinal Absorption
Male
Nutrition
Pasta
Rats
Rats, Sprague-Dawley
Retention
Species Specificity
Time Factors
Triticum - genetics
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Wheat
Zinc
Zinc - administration & dosage
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Summary:A whole-body radioassay procedure was used to assess the retention and apparent absorption by rats of Cd in kernels of durum wheat (Triticum turgidum L. var. durum) harvested from plants grown hydroponically in 109Cd-labelled nutrient solution. Wholegrain wheat, containing 5 μmol Cd (570 μg)/kg dry weight labelled intrinsically with 109Cd, was incorporated into test meals fed to rats that had been maintained on diets containing marginally adequate, adequate or surplus levels of Zn (0·12 mmol (8 mg), 0·43 mmol (28 mg) or 1·55 mmol (101 mg) Zn/kg respectively), and either 0 or 50 g durum wheat/kg. Regardless of diet, all rats consumed about 99 % of the test meal offered. In rats fed diets without wheat, initial Cd absorption averaged 7·7, 4·6 and 2·4 % of the dose when the diet contained 0·12 mmol (8 mg), 0·43 mmol (28 mg) or 1·55 mmol (101 mg) Zn/kg diet respectively. In rats fed wheat-containing diets, initial Cd absorption averaged 3·8 and 2·6 % of the dose when dietary Zn concentration was 0·12 mmol (8 mg) and 0·43 mmol (28 mg)/kg diet respectively. The amount of Cd retained in the body at 15 d postprandial was
ISSN:0007-1145
1475-2662
DOI:10.1079/BJN2002809