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Open AccessArticle

Mineral Constituents Profiling of Ready-To-Drink Nutritional Supplements by Inductively Coupled Plasma Optical Emission Spectrometry

Analytical Chemistry and Chemical Metallurgy Division, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże St. Wyspiańskiego 27, 50-370 Wrocław, Poland
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Academic Editor: Derek J. McPhee
Molecules 2020, 25(4), 851; https://doi.org/10.3390/molecules25040851 (registering DOI)
Received: 16 January 2020 / Revised: 7 February 2020 / Accepted: 13 February 2020 / Published: 14 February 2020
Nutritional drinks (NDs) are medicinal food products intended for people with different health issues constricting nutrients provision. Eight varieties of milkshake style NDs were analyzed in this work. Prior to element analysis, they were freeze-dried, and concentrations of twenty macro- and microelements in analyzed samples were simultaneously measured by ICP-OES after their mineralization in a closed-vessel microwave-assisted digestion system. Results of this analysis indicated that these NDs must be considered as nutrient-dense foods, taking into account mineral constituents. Consumption of two bottles of such NDs per day provides very a high amount or even an excess of human daily requirements set as Recommended Dietary Allowances (RDAs). Generally, concentrations of determined elements in examined NDs were consistent with data given on the labels—most of differences did not exceed 30% (median: −5.91%, standard deviation: 14%). Discovered very strong and moderate positive correlations between concentrations of major and essential elements (Ca, Mg, P, Cu, Fe, Mn, Zn) were likely due to their incorporation into formulations of analyzed NDs. However, relationships between contents of trace elements were the result of concomitance of these elements in substrates used for examined products production or contamination of substrates. View Full-Text
Keywords: medical nutrition; nutritional drinks; lyophilization; freeze-drying; mineral constituents; ICP-OES; interelement correlations medical nutrition; nutritional drinks; lyophilization; freeze-drying; mineral constituents; ICP-OES; interelement correlations
MDPI and ACS Style

Leśniewicz, A.; Kurowska, D.; Pohl, P. Mineral Constituents Profiling of Ready-To-Drink Nutritional Supplements by Inductively Coupled Plasma Optical Emission Spectrometry. Molecules 2020, 25, 851.

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