Citat:
Twenty-six (26) trace elements (essential and non-essential/toxic) were determined in 49 whey protein (WP) supplements available for sale in the Portuguese market by inductively coupled plasma – mass spectrometry. The most abundant essential trace element was Fe (13.7 ± 16.7 μg/g) and the least abundant was Co (0.040 ± 0.028 μg/g). The estimated daily intake was calculated and, considering a daily consumption of 50 g of WP supplement, on average, 100 % of the recommended dietary allowance for Mo and ca. 40 % for Se is met. A safety assessment was also performed based on the Permitted Daily Exposure limits settled by the USP, general chapter <2232> . The daily consumption of 50 g of WP supplement does not contribute for more than 12.1 % (Cd) of those limits, as regards As, Cd, Pb and Hg. Thus, WP supplements can be considered safe products, regarding the presence of potentially toxic elements.
• Twenty-six trace elements were determined in whey protein supplements.
• The most abundant essential trace element was Fe and the least abundant Co.
• Whey protein supplements presented high EDI, expressed as %RDA, for Mo and Se.
• Low levels of toxic elements (<LOD of the ICP-MS analytical procedure) for many samples.
• Whey protein supplements can be considered safe products.
|
Journal of Food Composition and Analysis, Volume 86, March 2020. Essential and non-essential/toxic trace elements in whey protein supplements.