Radioactive isotopes 40K, 137Cs, 226Ra, 228Ra, 234Th in algae supplements – Potential radiotoxicity of aquatic superfoods

Many food products are recommended to give health benefits. Thus algae superfoods consumption is growing worldwide, although quite a few studies have examined the quantities of radionuclides they contain and their potential effects on human health. The study presents radioactive 40K, 137Cs, 226Ra, 228Ra, 234Th in supplements available worldwide for consumption. Samples been quantified by gamma-ray spectrometry activity concentrations (Bq/kg dw) ranged 0.23–0.65 (137Cs) followed 1.76–10.7 (226Ra), 0.20–12.7 (228Ra), 11.6–24.2 (234Th), 20.1–400 (40K). Also, effective radiation doses from decay ingested with analyzed estimated. highest annual dose reaching 15.1 µSv/year has assessed naturally occurring 226Ra Chlorella vulgaris Japan. Fukushima Nuclear Power Plant not significantly impacted 137Cs present algal superfoods. Based study, seem be low, would doses, investigated could considered safe food.