Nutritional and toxicological importance of macro, trace, and ultra-trace elements in algae food products.
The content of 5 macro elements (Na, K, Ca, Mg, and P), 6 trace elements (Fe, Mn, Zn, Cu, Se, and I), and 4 ultra-trace elements (As, Pb, Cd, and Hg) in 34 edible dried seaweed products of brown algae (Laminaria sp., Undaria pinnatifida, and Hizikia fusiforme) and red algae (Porphyra sp.) originated from China, Japan, and Korea and bought by retail in Germany was determined. The content of these elements was analyzed by spectrometric methods (ICP-AES, ICP-MS, HGAAS, and CVAAS). Assuming a daily intake with 5 g FM of algae, the contribution of the essential elements to the diet is low, with the exception of I. Brown algae contained as much as 1316 +/- 1669 mg of I/kg FM. More than 4000 mg of I/kg FM were found in several Laminaria sp. Moreover, some brown algae, such as Hizikia fusiforme, had high contents of total As (87.7 +/- 8.2 mg/kg FM).
Dawczynski
Christine
C
Institute of Nutrition, Friedrich Schiller University, Dornburger Strasse 24, D-07743 Jena, Germany.
Schäfer
Ulrich
U
Leiterer
Matthias
M
Jahreis
Gerhard
G
D001151:Arsenic / Q000032:analysis / Q000633:toxicity; D004032:Diet; D004602:Elements; D007455:Iodine / Q000032:analysis / Q000633:toxicity; D008670:Metals / Q000032:analysis; D009751:Nutritional Requirements; D000459:Phaeophyceae / Q000737:chemistry*; D000461:Rhodophyta / Q000737:chemistry*; D014131:Trace Elements / Q000032:analysis / Q000633:toxicity
D004602:Elements; D008670:Metals; D014131:Trace Elements; D007455:Iodine; D001151:Arsenic