The aim of this investigation was to determine the relationships between lead sorption and calcium desorption on black currant pomace fibre preparations and their compositions with apple pomace, as well as to assess the suitability of fibre composition as selective sorbents of metals (Pb, Ca) in certain foodstuffs. It was found that the investigated materials had a high dietary fibre content (>65%) and satisfied the requirements of the standard concerning the permitted value for toxic metals in foodstuffs. Hence, they could be used as food additives. The investigations have shown that fibre preparations are characterised by a strong lead binding capacity (ca. 85% on the average) and that another characteristic property of these materials is their ability to desorb calcium. On the basis of statistical analysis of the results it can be stated that there were interactions between Ca and Pb on the pomace preparations studied.
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