THE CONTENT OF SOME MINERAL COMPONENTS AND HEAVY METALS OF DAILY FOOD RATIONS OF SECONDARY SCHOOL STUDENTS

The studies were carried out on the content of some mineral components and heavy metals of daily food rations of secondary school students. The calcium content was on the level of 67 to 92% 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% of Provisional Tolerated Weekly Intake (PTWI) for lead and 64 to 83% PTWI for cadmium. The values for the diet health index (DHI) calculated in the relation to calcium, iron, zinc and copper showed that the examined food rations did not create the health danger, despite considerable amounts of cadmium and lead.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.