Selenium Distribution in the Tissues of Sea bass (Lateolaborax japonicus) and Sea bream (Chrysophrys major)

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• Distribution of mercury and selenium in different tissues of sea bass (Lateolabrax japonicus) was examined for the samples collected from the mouth of Edo River, Tokyo Bay, where industrial wastage has been suspected to contaminate the sea-lives. The samples of about 40cm in length were subjected to the analysis.Total mercury content was observed higher in the visceral portion, while lower in the muscle. Only minute quantity was noticed in brain tissue.Selenium was more concentrated in liver and spleen, but less in the muscle. However, a fairly high concentration of selenium was detected in the brain.As to the content ratio of Hg to Se, Ganther (1972) described that the ratio of 1:1 for canned tuna meat in terms of molar concentration. But, in the muscle of sea bass the indicated ratio was between 2 and 5; selenium was always higher in the content than mercury. A highest ratio was recorded in the liver, which exceeded 40.Since, selenium mostly accumulated in the liver of sea bass, the tissue was fractionated into soluble protein, salt-soluble protein, fat and hot water extractives and checked of selenium content. Almost 67% of total selenium came to the extractives and this may suggest that selenium exists in lower molecular size in that tissue. It is interesting to mention that, in the muscle, 65% of selenium was found in salt-soluble fraction of protein.In another series of experiment, uptake of both mercury and selenium was examined on sea bream (Chrysophrys major), reared for 91 days in aquarium circulated with natural sea water to which HgCl2 was added at the levels between 0.001ppm and 0.1ppm. A very quick absorption of mercury was seen shortly after starting the culture, but there was no remarkable increase in selenium concentration.

• 公益社団法人 日本食品衛生学会の論文

公益社団法人 日本食品衛生学会 | 論文

• 食品添加物クエン酸中のイソクエン酸の分析法
• 容器入り飲用水中の無機陰イオン濃度
• 食物アレルギーに関する食品表示とリスクコミュニケーション
• 植物性の健康食品の安全性について
• 肝蛭駆除剤(トリブロムサラン, オキシクロザニドおよびブロムフェノホス)の乳牛への投与後の血漿中濃度および乳汁への移行

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