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Arsenite [As (III)], arsenate [As (V)], methylarsonate (MMA), and dimethylarsinate (DMA) in five edible seaweeds (the brown algae  Laminaria japonica , red algae  Porphyra yezoensis , brown algae  Undaria pinnatifida , brown algae  Hizikia fusiformis , and green algae  Enteromorpha prolifera ) were analyzed using  in vitro  digestion method determined by high-performance liquid chromatography inductively coupled plasma mass spectrometry. The results showed that DMA was found in the water extracts of all samples; As (III) were detected in  L. japonica  and  U. pinnatifida  and about 23.0 and 0.15 mg/kg of As (V) were found in  H. fusiformis  and  E. prolifera  respectively. However, after the gastrointestinal digestion, As (V) was not detected in any of the five seaweeds. About 0.19 and 1.47 mg/kg of As (III) was detected in the gastric extracts of  L. japonica  and  H. fusiformis , respectively, and about 0.31 and 0.10 mg/kg of As (III) were extracted from the intestinal extracts of  Porphyra yezoensis  and  U. pinnatifida , respectively. The present results successfully reveal the differences of As species and levels in the water and biomimetic extracts of five edible seaweeds. The risk assessment of the inorganic arsenic in the five edible seaweeds based on present data showed almost no hazards to human health.

international journal of food science

Arsenic Species in Edible Seaweeds Using<i>In Vitro</i>Biomimetic Digestion Determined by High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry

Arsenic Species in Edible Seaweeds UsingIn VitroBiomimetic Digestion Determined by High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry