ISSN:
1745-4557
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The effect of soil entrapment on the mineral element concentration in potatoes, Solanum tuberosum L., cv ‘Katahdin,’‘Norking Russet’ and ‘Shepody,’was studied. Titanium was used as the marker element to correct for contamination by soil. Soil entrapment was a significant factor contributing to increases in tuber mineral element concentrations due to the presence of soil in the tissue surface, especially for Al and Fe. Among the macroelements, Ca and Mg concentrations showed a significant increase. Among the microelements, the greatest increases in concentration due to entrapment were observed for Al (95%) and Fe (88%), less for Mn (4%), and generally none for Cd, Co, Cu and Zn. Highest concentrations of elements, including (the potentially toxic element) Al, were found in the peel and least in the pith. The three cultivars showed differences in the accumulation of mineral elements in the peel, with the rougher peel showing the greatest soil entrapment. Boiling resulted in significant decreases in macroelements and increases of microelements in the peel. Tubers in this experiment were cultivated on uncontaminated soil. For tubers grown in soils containing appreciable concentrations of nutritionally undesirable mineral elements, peeling before cooking would greatly facilitate their removal.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4557.1993.tb00099.x
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