porphyra yezoensis iodine

Abraham GE, Brownstein D: Validation of the orthoiodosupplementation program: a rebuttal of Dr. Gaby's editorial on iodine. Nori is the Japanese name for edible seaweed (a "sea vegetable") species of the red algae genus Pyropia, including P. Eur Food Res Technol 2000, 211: 229–233. Endocr J 2001, 48: 591–595. They are sold in packs in grocery stores for culinary purposes. Katamine S, Mamiya Y, Sekimoto K, Hoshino N, Totsuka K, Naruse U, Watabe A, Sugiyama R, Suzuki M: Iodine content of various meals currently consumed by urban Japanese. PubMed:Occurrence of Anserine as an Antioxidative Dipeptide in a Red Alga, Porphyra yezoensis. The Original Internist 2005, 12: 184–194. Nori and wakame are the most commonly consumed seaweeds in Japan, with nori accounting for 45% and wakame accounting for 30% (75% together) of total seaweed consumption, as stated by the Food and Agriculture Organization of the United Nations [35]. If seaweeds with elevated levels of bromine and low levels of iodine are consumed when the body is in an iodine deficient state, inhibition of thyroid hormone synthesis--due to bromine's attachment to tyrosine residues on thyroglobulin in place of iodine--is plausible [60]. This article is published under license to BioMed Central Ltd. This is the reason why we have now Porphyra Tenera, Porphyra Yezoensis and Porphyra Haitanensis; which were grouped in Porphyra … Edited by: Wilson JD, Foster DW, Kronenberg HM, Larson P. Philadelphia: W.B. Springer Nature. Matsumura Y: Nutrition trends in Japan. https://doi.org/10.1186/1756-6614-4-14, DOI: https://doi.org/10.1186/1756-6614-4-14. Below is the average iodine content of three different dried seaweeds (8): Kelp is one of the best sources of iodine. 10.1039/b105695f, Pavelka S, Vobecky M, Babicky A: Halogen speciation in the rat thyroid: Simultaneous determination of bromine and iodine by short-term INAA. Environ Health Perspect 2002,110(suppl 3):349–353. CA Cancer J Clin 1999, 49: 138–144. Farming takes place in the sea where the Pyropia plants grow attached to nets suspended at the sea surface and where the farmers operate from boats. The table below gives the chemical composition of selected, representative seaweeds, some of which are currently used for food or … 10.1089/thy.2010.0077, World Health Organization: Mar Biol 1978, 47: 243–250. California Privacy Statement, Mean and median iodine levels in the Japanese urine collections typically do not exceed 3,000 μg/L (3 mg/L). J Radioanal Nucl Chem 2008, 278: 575–579. Asia Pac J Clin Nutr 2001, 10: S40-S47. Food Chem Toxicol 2006, 44: 1144–1150. Therefore, daily consumption of high amounts of dried nori is discouraged. Based on previous estimates and records, dried seaweed consumption of 4-7 g/day [17, 22, 30, 31] results in iodine intakes between 79 and 139 μg/day from nori and wakame when calculated using dried iodine contents of 16 and 42 μg/g respectively [18]. Ishizuki Y, Yamauchi K, Miura Y: Transient thyrotoxicosis induced by Japanese kombu. In some reports seaweed consumption has been estimated at 4-7 g/day dried weight [17, 22, 30, 31], while other reports claim consumption of 12 g/day using both wet and dry weight [32]. They grow in the intertidal zone, which is a shallow cold water splash zone. [15] A 2014 study reported that dried purple laver ("nori") contains vitamin B12 in sufficient quantities to meet the RDA requirement (Vitamin B12 content: 77.6 μg /100 g dry weight). By combining information from dietary records, food surveys, urine iodine analysis (both spot and 24-hour samples) and seaweed iodine content, we estimate that the Japanese iodine intake--largely from seaweeds--averages 1,000-3,000 μg/day (1-3 mg/day). Taxonomy - Pyropia yezoensis (Susabi-nori) (Porphyra yezoensis) (SPECIES) ))) Map to UniProtKB (737) Reviewed (210) Swiss-Prot. A novel annulation reaction of two enamine molecules with iodine under basic conditions to form 4-functionalized imidazolium salts has been established. Clin Endocrinol (Oxf) 1993, 38: 273–281. Predicting the type and amount of seaweed the Japanese consume is difficult due to day-to-day meal variation and dietary differences between generations and regions. 10.1007/BF00541002, Rose M, Miller P, Baxter M, Appleton G, Crews H, Croasdale M: Bromine and iodine in 1997 UK total diet study samples. Both nori and wakame have relatively low iodine contents compared to kombu. His current research focus includes endocrinology, breast cancer, and--most recently--the importance of iodine to optimum health. Seaweed grows on the floating netsand farmers (seaweed farmers) work on these plantations from their boats.

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