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Speciation of Bio-Available Iodine in Abalone (Haliotis discus hannai) by High-Performance Liquid Chromatography Hyphenated with Inductively Coupled Plasma-Mass Spectrometry Using an In Vitro Method

Authors
Doh, Han SolPark, Hyun Jin
Issue Date
6월-2018
Publisher
WILEY
Keywords
abalone (Haliotis discus hannai); HPLC-ICP-MS; iodine; iodine availability; iodine speciation
Citation
JOURNAL OF FOOD SCIENCE, v.83, no.6, pp.1579 - 1587
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF FOOD SCIENCE
Volume
83
Number
6
Start Page
1579
End Page
1587
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/75070
DOI
10.1111/1750-3841.14173
ISSN
0022-1147
Abstract
Abalone is one of the most valuable marine products found in East Asia because it is rich in nutritious substances including iodine. In this study, the in vitro dialyzability approach was used to assess the bio-available iodine species in abalone. Iodide, iodate, 3-iodo-L-tyrosine (MIT), and 3,5-diiodo-L-tyrosine (DIT) were separated by high-performance liquid chromatography hyphenated with inductively coupled plasma-mass spectrometry (HPLC-ICP-MS). To assure the consistency, reliability, and accuracy of the data, the method was validated. Comparison of the total iodine in abalone muscle and viscera indicated that abalone muscle showed greater digestion/absorption efficiency than abalone viscera (digestion efficiency: 68.13 2.59% and 47.88 +/- 5.76% and absorption efficiency: 59.78 +/- 2.93% and 35.12 +/- 1.43% for abalone viscera and muscle, respectively). However, evaluation of the sum of the analyzed iodine species targeted in this study by HPLC-ICP-MS indicated that abalone muscle showed lower digestion efficiency and similar absorption efficiency compared to that of abalone viscera (digestion efficiency: 35.52 +/- 5.41% and 28.84 +/- 1.83%; absorption efficiency: 23.56 +/- 4.38% and 27.56 +/- 1.51% for abalone viscera and muscle, respectively). The main forms of iodine detected in abalone muscle were iodide and MIT, whereas iodide was the major form in abalone viscera. Practical ApplicationThe bio-available iodine in abalone was quantified via an in vitro method employing HPLC-ICP-MS. The results of this study indicated that abalone is feasible as a new iodine source and may prospectively find application in iodine-fortified foods.
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PARK, HYUN JIN
생명과학대학 (식품공학과)
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