The effects of sugar-beet fibre supplementation for five weeks on zinc, iron and copper status in human subjects.
The present study was conducted to evaluate the effects of fibre supplementation on zinc, iron and copper status in human subjects. Ten males (53 +/- 8 years of age) participated in this study which consisted of three phases: baseline-1 period (2 weeks) in which subjects were on their normal, habitual dietary intake, followed by a period of fibre supplementation (5 weeks) in which subjects were supplemented with 26 g dietary fibre/d, and baseline-2 period (4 weeks) in which fibre supplement was withdrawn. Parametric measurements of zinc, iron and copper status were conducted on weeks 1,2 (zero-time), 7 and 11. Results showed that fibre supplementation for 5 weeks did not cause any significant change in the status of zinc (measured by concentration of zinc in plasma and urine and alkaline phosphatase activity), iron (measured by packed cell volume (PCV%), HB, transferrin saturation % and ferritin), or copper (measured by plasma copper concentration and erythrocyte superoxide dismutase activity). We conclude that consumption of sugar-beet fibre added to the daily diet does not constitute any risk with respect to zinc, iron and copper nutriture.
Cossack
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McGill University, Macdonald College, School of Dietetics and Human Nutrition, Ste-Anne-de-Bellevue, Quebec, Canada.
Rojhani
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Musaiger
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D003300:Copper / Q000378:metabolism*; D004043:Dietary Fiber / Q000494:pharmacology*; D004909:Erythrocyte Indices; D006801:Humans; D007501:Iron / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011863:Radioimmunoassay; D013054:Spectrophotometry, Atomic; D015032:Zinc / Q000378:metabolism*
D004043:Dietary Fiber; D003300:Copper; D007501:Iron; D015032:Zinc