Binding cadmium and lead using natural polysaccharide fibres from some fruit and vegetable wastes
2010
Borycka, B.,Politechnika Radomska, Radom (Poland). Wydz. Materialoznawstwa, Technologii i Wzornictwa
The use of polysaccharide fibre from fruit and vegetable wastes for heavy metal sorption can improve the health promoting qualities of food and human nutrition. The objective of the study was to verify the possibility binding heavy metals: cadmium and lead by utilizing the chokeberry and tomato fibre wastes. It was proved that the wastes selected for research (chokeberry pomace and tomato pulp) could be regarded as a rich source of dietary fibre. The chokeberry dietary fibre preparations are characterized by adverse lead sorption capacity (SPb) in a highly acidic milieu (ca. 30 percent at pH=2,0) and in a slighty acidic milieu of ca. 80 percent as well as of a relatively low cadmium sorption level of SCd: about 2 to 3 percent). Irrespective of the process conditions, the dietary fibre derived from the tomato pulp is good sorbing agent of Pb and Cd (SPb: about 67 to 68 percent and SCd: about 57 to 59 percent)
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