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Zinc absorption in adult humans: the effect of protein sources added to liquid test meals

Davidsson, Lena ; Almgren, Annette ; SandströM, Brittmarie ; Juillerat, Marc El-A ; Hurrell, Richard F.

In: British Journal of Nutrition, 1996, vol. 75, no. 4, p. 607-613

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    Titre
    • Zinc absorption in adult humans: the effect of protein sources added to liquid test meals
    Auteur
    • Davidsson, Lena. Nestec Ltd, Nestl´Research Centre, PO Box 44, CH-1000 Lausanne 26, Switzerland
    • Almgren, Annette. Department of Clinical Nutrition, Gothenburg University, Annedalsklinikerna, S-41345 Göteborg, Sweden
    • SandströM, Brittmarie. Research Department of Human Nutrition, The Royal Veterinary and Agricultural University, Rolighedsvej 25, DK-1958 Fredriksberg, Denmark
    • Juillerat, Marc El-A. Nestec Ltd, Nestl´Research Centre, PO Box 44, CH-1000 Lausanne 26, Switzerland
    • Hurrell, Richard F.. Nestec Ltd, Nestl´Research Centre, PO Box 44, CH-1000 Lausanne 26, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • British Journal of Nutrition, 1996, vol. 75, no. 4, p. 607-613. Cambridge University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:304689
    Summary
    The influence of different protein sources on Zn absorption was evaluated in healthy adults by radioisotopic labelling of single meals, followed by whole-body retention measurements 14 d after intake. Semi-synthetic liquid diets were used for the evaluation of different animal-protein sources and dephytinized soyabean-protein isolate ( ··01 g phytic acid/kg). Zn absorption was measured in the same subjects from identical test meals containing no added protein. No statistically significant differences were found in the Zn absorption from test meals containing bovine whey, casein or egg albumen when compared with test meals without added protein. Bovine serum albumin (BSA) and soyabean-protein isolate (< ··01 g phytic acid/kg) significantly reduced the mean absorption of Zn from 45-49% (no added protein) to 38·0 (SD 10·9) (BSA, P < ··05) and 33·9 (SD 12·6)% (soyabean-protein isolate < ··01 g phytic acid/kg, P < ··01). These results demonstrate that Zn absorption is inhibited by certain protein sources, such as BSA and dephytinized soyabean-protein isolate, while other proteins have little or no effect