Content of some mineral components and heavy metals of daily food rations of secondary school students
2001
Cieslik, E. | Sikora, E. (Cracow Agricultural University (Poland). Chair of Human Nutrition)
The students were carried out on the content of some components and heavy metals of daily food rations of secondary school students. The calcium content was on the level of 67 to 92 percent of the intake recommended for this age group, the most likely reason for which was insufficient supply of milk and dairy products. Regarding the content of iron, copper and zinc, the analysed meals covered in full the requirements of students for these elements. The amounts of lead and cadmium that were supplied by the examined rations during 7-day time period were on the level of 60 to 78 percent of Provisional Tolerated Weekly Intake (PTWI) for lead and 64 to 83 percent PTWI for cadmium. The values for the diet health index (DHI) calculated in the relation to calcium, iron, zinc and copper showed that examined food rations did not create the health danger, despite considerable amounts of cadmium and lead
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