マグロ血合肉の希塩酸抽出物に含まれるセレンの栄養有効性

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  • 廣瀬 侑太郎
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 崔 懿
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 山川 裕久
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 細見 亮太
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 福永 健治
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 吉田 宗弘
    関西大学化学生命工学部栄養化学・食品化学研究室

書誌事項

タイトル別名
  • Nutritional Availability of Selenium Contained in Diluted HCl-extract of Dark Muscle of Tuna
  • マグロ チアイニク ノ キエンサン チュウシュツブツ ニ フクマレル セレン ノ エイヨウ ユウコウセイ

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<p>To evaluate nutritional availability of selenium contained in a low-molecular weight fraction of dark muscle of tuna, selenium content and glutathione peroxidase (GPX) activity were measured in serum and liver of mice fed a casein-based low selenium basal diet or the basal diet supplemented with selenium as sodium selenite, dark muscle of tuna or diluted HCl-extract of the dark muscle. Male weanling A/J mice were fed the low selenium diet (selenium content, 32 ng/g) for 3 weeks. After then, the mice were divided into four group; one group was fed the basal diet continuously and other 3 groups were fed the basal diet supplemented with selenium (100 ng/g) as sodium selenite, dried powder of dark muscle of tuna or dried powder of diluted HCl-extract of the dark muscle for 1 week. The serum and liver selenium content of the mice fed the selenium-supplemented diets were significantly higher than those of the mice fed the basal low selenium diet. A significantly difference due to the selenium source was observed in the elevation of selenium content; the highest elevation was observed in the mice fed the selenite-supplemented diet and the lowest elevation was observed in the mice fed diet with the diluted HCl-extract. The serum and liver GPX activity were elevated only in the mice fed the selenite-supplemented diet. These results indicate that nutritional availability of selenium contained in a low-molecular weight fraction of dark muscle of tuna is low compared to selenite or selenium contained in a protein fraction of the dark muscle.</p>

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