Trace Metal Elements and other Components in Whey Demineralized by Electrodialysis with lonpermselective Membranes

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  • イオン交換膜電気透析脱塩によるホエー中の微量金属元素およびその他成分の変化
  • イオン コウカン マク デンキ トウセキ ダツエン ニヨル ホエーナカ ノ ビ

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Only limited variation in the concentration of such trace metal elements as Fe, Cu and Zn in cow's milk whey was observed when it was subjected to demineralization, which caused 90% reduction in bulk mineral content, by electrodialysis with ionpermselective membranes. Concentration of Mn was not significantly varied when whey was subjected to 74% demineralization in bulk mineral content. However an extensive demineralization, to achieve 90% reduction in bulk mineral content, caused 29% reduction in Mn content. Concentrations of K, Na and CI were sharply lowered as demineralization preceeded and the bulk of Cl and the bulks of K and Na were eliminated in consequence of 74% and 90% demineralization, respectively. Concentrations of Ca, Mg, P and citric acid were not lowered initially while they decreased mainly at the second-half phase of demineralization in which the elimination of Cl, K and Na had been already effected.

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