Liver and plasma copper concentrations in rats fed diets containing various proteins |
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Authors: | M Veenendaal X Zhang A G Lemmens A C Beynen |
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Institution: | (1) Department of Laboratory Animal Science, State University, PO Box 80.166, 3508 TD Utrecht, The Netherlands;(2) Department of Human Nutrition, Agricultural University, Wageningen, The Netherlands |
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Abstract: | The question was addressed whether the type of dietary protein influences copper (Cu) concentrations in liver and plasma of
rats. For this purpose, weanling female rats were fed diets containing as the sole source of protein either soybean protein,
casein, amino acid mixtures simulating soybean protein or casein, lactalbumin, ovalbumin, or herring meal. The diets were
balanced for residual Cu in the protein preparations. The type of protein and the composition of the amino acid mixture did
not differentially influence liver Cu concentrations. Liver Cu was significantly lowered after feeding the amino acid mixtures
when compared with the intact proteins. Plasma Cu concentrations were not affected by the type of protein in the diet. |
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Keywords: | Liver Cu plasma Cu soybean protein casein amino acid |
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