Characterization of vitamin B12 compounds from the brackish-water bivalve Corbicula japonica

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• 作者：Yukio Ishihara (1) (2)
  Kazumi Ueta (1) (3)
  Tomohiro Bito (1)
  Shigeo Takenaka (4)
  Yukinori Yabuta (1)
  Fumio Watanabe (1)
  
• 关键词：Brackish ; water bivalve ; Corbicula japonica ; Corrinoid compound ; Vitamin B12
• 刊名：Fisheries Science
• 出版年：2013
• 出版时间：March 2013
• 年：2013
• 卷：79
• 期：2
• 页码：321-326
• 全文大小：783KB
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• 作者单位：Yukio Ishihara (1) (2)
  Kazumi Ueta (1) (3)
  Tomohiro Bito (1)
  Shigeo Takenaka (4)
  Yukinori Yabuta (1)
  Fumio Watanabe (1)
  
  1. The United Graduate School of Agricultural Sciences, Tottori University, Tottori, 680-8553, Japan
  2. Tottori Prefecture Fisheries Experimental Station, Sakai-Minato, 684-0046, Japan
  3. Department of Science for Human Health, Shikoku University Junior College, Tokushima, 771-1192, Japan
  4. Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, 598-8531, Japan
  

文摘

In Lake Togo (Tottori prefecture, Japan), the vitamin B12 content of the brackish-water bivalve Corbicula japonica remained high (17.3-2.5?μg/100?g wet weight of the edible portion) throughout the year, except during August and September. We evaluated whether the bivalve contained true vitamin B12 or other corrinoid compounds that are inactive in humans by purifying the compounds and identifying them using LC/ESI–MS/MS chromatograms. The results indicated that “true-vitamin B12 predominated in the bivalve, although small amounts of inactive corrinoid compounds (pseudovitamin B12 and three unidentified compounds) were also found.