Toxic and Trace Elements in Seaweeds from a North Atlantic Ocean Region (Tenerife, Canary Islands)

Paz, Soraya; Rubio, Carmen; Frı́as, I.; Guillen-Pino, F.; Niebla-Canelo, Daniel; Alejandro-Vega, Samuel; Gutiérrez, Ángel J.; Hardisson, Arturo; González-Weller, Dailos

doi:10.3390/su14105967

Cited by 4 publications

(1 citation statement)

References 44 publications

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“…Then, they were transferred to an oven-muffle (Nabertherm, Lilienthal, Germany), whose temperature increased by 50 °C every hour for 24 h. Once the temperature of 425 ± 15 °C was reached, it was maintained for 24 h, thus achieving incineration of the samples. The white ashes obtained were dissolved to a volume of 25 mL in 1.5% HNO 3 (Sigma Aldrich, Taufkirchen, Germany) [ 63 , 64 , 65 ].…”

Section: Methodsmentioning

confidence: 99%

Whey Protein Dietary Supplements: Metal Exposure Assessment and Risk Characterization

Bethencourt-Barbuzano

González-Weller²,

Paz

et al. 2023

Nutrients

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Protein supplements (PS) are trendy foods, especially those made from whey. In addition to providing protein, these products are a source of metals, providing essential elements (Na, K, Mg, Ca, Mo, Mn, Fe, Co, Cu, and Zn) and other potentially toxic elements (Al, B, Sr, V Ba, and Ni). In this study, 47 whey PS samples were analyzed for mineral elements by ICP-OES, and their dietary exposures were assessed for three consumption scenarios. Elements found in higher concentrations were K (4689.10 mg/kg) and Ca (3811.27 mg/kg). The intake of 30 g PS (average recommended amount/day) provides about 20% of the established reference value (NRI) for Cr (18.30% for men and 25.63% for women) and Mo (26.99%). In a high daily consumption scenario (100 g PS/day) and when the maximum concentrations are considered, Cr, Zn, Fe, Mo, and Mg dietary intakes of these metals exceed the daily recommended intakes and could pose a risk. The daily intake of 30, 60, and 100 g of whey PS for 25 years does not pose a health risk since the hazard index (HI) is less than one in these consumption scenarios, and the essential elements contributing most to HI are Co, followed by Mo and Cr. It is recommended to improve the information to the consumers of these new products. Furthermore, to help in the management and prevention of these potential health risks, it would be advisable to improve the regulation of these dietary supplements and their labeling.

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Section: Methodsmentioning

confidence: 99%

Whey Protein Dietary Supplements: Metal Exposure Assessment and Risk Characterization

Bethencourt-Barbuzano

González-Weller²,

Paz

et al. 2023

Nutrients

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From a heavy metal perspective, is macroalgal biomass from Madeira Archipelago and Gran Canaria Island of eastern Atlantic safe for the development of blue bioeconomy products?

Nunes,

Ferraz,

Venuleo

et al. 2023

J Appl Phycol

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Macroalgae are considered a valuable source of several compounds with nutritional, nutraceutical, cosmeceutical, and pharmaceutical applications. They are also used for crop fertilization and biofortification by introducing important minerals into the soil essential for crop productivity. At the same time, however, they are known bio-accumulators of some heavy metals. In this work, we assessed the content of 7 minerals considered as heavy metals in 25 macroalgae samples, comprising 4 greens, 9 reds and 12 browns, from Madeira Archipelago, Portugal, for their potential use as blue bioeconomy products. These heavy metals included zinc (Zn) with concentrations that ranged from 1.95 – 242.65 mg kg−1 dw, nickel (Ni, 0.6 – 34.78 mg kg−1 dw), copper (Cu, 0.42 – 7.98 mg kg−1 dw), chromium (Cr, 0.47 – 45.74 mg kg−1 dw), cadmium (Cd, 0.1 – 2.58 mg kg−1 dw), lead (Pb, 0.05 – 2.79 mg kg−1 dw) and mercury (Hg, 0.03 – 8.49 µg kg−1 dw). We also analysed 22 samples of beach-cast macroalgae from Gran Canaria Island, Spain, collected from November 2016 to November 2019. The same heavy metals were assessed with their concentrations that ranged as follows: Zn (11.41 – 42.20 mg kg−1 dw), Ni (3.17 – 17.78 mg kg−1 dw), Cu (1.85 – 4.20 mg kg−1 dw), Cr (6.08 – 37.98 mg kg−1 dw), Cd (0.02 – 0.11 g kg−1 dw), Pb (0.16 –5.42 mg kg−1 dw) and Hg (3.59 – 31.00 µg kg−1 dw). These concentrations are all within the normal ranges reported in earlier studies in low industrialized areas, except for the brown algae Gongolaria abies-marina and Sargassum vulgare with high mean (± SD) Cd concentration (1.91 ± 0.36 and 1.75 ± 0.07 g kg−1 dw respectively). Our results suggest that most of the biomass prospected in these localities covered in the present study would be a viable source of materials for the development of a blue economy industry with emerging products following the European Union directives.

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Health Risk Assessment and Mineral Contents in Brown Seaweed Colpomenia sinuosa for Human Consumption

Türker,

Ak,

Taş

2024

Thalassas

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Toxic and Trace Elements in Seaweeds from a North Atlantic Ocean Region (Tenerife, Canary Islands)

Cited by 4 publications

References 44 publications

Whey Protein Dietary Supplements: Metal Exposure Assessment and Risk Characterization

Whey Protein Dietary Supplements: Metal Exposure Assessment and Risk Characterization

From a heavy metal perspective, is macroalgal biomass from Madeira Archipelago and Gran Canaria Island of eastern Atlantic safe for the development of blue bioeconomy products?

Health Risk Assessment and Mineral Contents in Brown Seaweed Colpomenia sinuosa for Human Consumption

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