Analysis of iodine content in seaweed by GC-ECD and estimation of iodine intake

摘要: Abstract Edible seaweed products have been consumed in many Asian countries. seaweeds accumulate iodine from seawater, and are therefore a good dietary source of iodine. An adequate consumption can eliminate deficiency disorders, but excessive intake is not for health. The recommended reference 0.15 mg/d 0.14 mg/d has established the United States Taiwan, respectively. In this study, 30 samples were surveyed content. included 10 nori (Porphyra), wakame (Undaria), kombu (Laminaria) products. was derivatized with 3-pentanone detected by gas chromatography-electron capture detector (GC-ECD). method detection limit 0.5 mg/kg. content 29.3–45.8 mg/kg, 93.9–185.1 mg/kg, 241–4921 mg/kg. Kombu highest average 2523.5 mg/kg, followed (139.7 mg/kg) (36.9 mg/kg). GC-ECD developed study low-cost alternative to inductively coupled plasma-optical emission spectroscopy seaweeds. current survey calculated compared Taiwan. risk benefit also discussed.