Abstract
Dietary supplements enjoy great popularity among consumers as their application is a comfortable way of supplementing an everyday diet in deficit substances indispensable for proper functioning of the human organism. An important group of dietary supplements is constituted by the preparations containing antioxidants protecting the organism from free radicals. The market is abundant with many preparations containing antioxidants, as those applied in the prophylaxis and as supplements in the therapy of eye problems and those containing garlic which present multi-aspect action. Dietary supplements are often plant components which are rich in compounds of antioxidative action such as plant polyphenols (phenolic acids, flavonoids), carotenoids and mineral substances (as parsley or garlic). Continuing the research aimed at the determination of the chosen mineral components in dietary supplements, the levels of calcium and magnesium (the macroelemts indispensable for man) in the preparations containing the antioxidants were determined. The chosen dietary supplements applied in the prophylaxis and therapy of the organs of sight (Aronia z luteiną, Bilberin, Maxi Vision, Naturapia wzrok, Oculobon, Pro-wzrok, Vitalux) and the preparations containing garlic in their composition (Aktiv Kapseln, Aliovital, Alitol, Bio-czosnek, Czosnek forte, Czosnek z pietruszką, Garlicin, Tabletki z czosnkiem) were analysed. The levels of calcium and magnesium were determined by the application of the flame absorption method (FAAS) using SOLAAR M5 spectrometer of Thermo Elemental. The levels of calcium in the studied dietary supplements ranged in a broad spectrum, on average from 6.98 ± 1.25 μg/g (Aronia z luteiną) to 2137 ± 166 μg/g (Maxi Vision) and up to 5299 ± 951 μg/g in Czosnek z pietruszką preparation. The smallest amounts of magnesium were contained in Aronia z luteiną preparation, on average – 3.34 ± 0.50 μg/g while the highest levels of this element were determined in Czosnek z pietruszką supplement, on average – 2997.8 ± 439 μg/g. The levels of calcium and magnesium in the studied dietary elements were diversified and they depended on their composition. Determination of these elements may constitute a supplementation of the daily need of the human organism for these macroelements.
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