Analytical Chemistry and Chemical Metallurgy Division, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże St. Wyspiańskiego 27, 50-370 Wrocław, Poland.
Molecules. 2020 Feb 14;25(4):851. doi: 10.3390/molecules25040851.
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.
营养饮料（NDs）是为有不同健康问题的人提供的药用食品，这些问题会限制营养素的供给。本工作分析了 8 种奶昔风格的 NDs。在进行元素分析之前，将它们冻干，并在密闭微波辅助消解系统中进行矿物化后，通过电感耦合等离子体 - 发射光谱法（ICP-OES）同时测量分析样品中 20 种宏量和微量元素的浓度。该分析的结果表明，这些 NDs 必须被视为营养丰富的食品，要考虑到矿物质成分。每天饮用两瓶这样的 NDs，可提供非常高的甚至超过人体每日需求量（以推荐膳食津贴（RDAs）设定）的矿物质。通常，检查过的 NDs 中各元素的浓度与标签上的数据一致 - 大多数差异不超过 30%（中位数：-5.91%，标准差：14%）。在主要和必需元素（Ca、Mg、P、Cu、Fe、Mn、Zn）的浓度之间发现了很强的和中等的正相关关系，这可能是由于它们被纳入了分析 NDs 的配方中。然而，微量元素之间的关系是由于这些元素在用于生产检查产品的基质中同时存在或基质受到污染。
