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METAL SORPTION CAPACITY OF FIBRE PREPARATIONS FROM FRUIT POMACE
 
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Pol. J. Food Nutr. Sci. 1998;48(1):67–76
 
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ABSTRACT
Chemical composition of dietary fibre was investigated and fractional composition of the fibre obtained from black currant and apple pomaces was determined by van Soest and Asp methods. The contents of macroelements (Ca, Mg) and microelements (Fe, Zn, Cu) as well as toxic elements (Cd, Pb) in the preparations were also investigated. Sorption of the chosen metals (Cd, Pb, Ca and Mg) on black currant preparation and black currant-apple pomaces composition were determined. The investigated materials were found to have a high content of dietary fibre (ca. 60 %) meeting the requirements for the content of toxic metals in foodstuff. The fibre preparations efficiently bound cadmium (> 30 %) and lead (> 40 %), but had very low capacity for calcium adsorption. The desorption of magnesium and calcium occured from the fibre under certain conditions.
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