An Enhanced Intestinal Absorption of Calcium in the Rat Directly Attributed to Dietary Casein |
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| Authors: | Yeon Sook Lee Tadashi Noguchi Hiroshi Naito |
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| Affiliation: | Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo, Bunkyo-ku, Tokyo |
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| Abstract: | The whole-body burdens and concentrations of ZDDT (the sum of p,p,′-DDE and p,p′-DDT) and PCBs in the Weddell seal, Leptonychotes weddelli, caught near Syowa Station, Antarctica, were determined by detailed biometric measurements of their organs and tissues and analyses of ZDDT and PCBs in them. The concentration levels of ZDDT and PCBs in Weddell seals were much lower than those in various species of marine mammals from other oceans. The low levels may be attributable to the low concentration of these chemicals in the food of Weddell seals and in the sea water under antarctic fast ice. However, the concentration ratio of ZDDT between the food organisms of seals and sea water under antarctic fast ice was higher than those of other ocean ecosystems. |
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