Seasonal changes in eicosapentaenoic and arachidonic acid contents in Bivalves and plankton collected from lake hamana.

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  • Ichinose Norio
    Department of Chemistry, Hamamatsu University School of Medicine
  • Adachi Kyoko
    Department of Chemistry, Hamamatsu University School of Medicine
  • Shimizu Chiaki
    Fisheries Laboratory, Faculty of Agriculture, the University of Tokyo
  • Okamoto Ken
    Fisheries Laboratory, Faculty of Agriculture, the University of Tokyo

書誌事項

公開日
1988
DOI
  • 10.1246/bcsj.61.3485
公開者
公益社団法人 日本化学会

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説明

Bivalves and plankton samples were collected monthly for one year from brackish Lake Hamana in Japan, and contents of 5,8,11,14,17-eicosapentaenoic acid (EPA) and 5,8,11,14-eicosatetraenoic acid (arachidonic acid, AA) and their weight percentage to total fatty acids were determined by fluorescence high-performance liquid chromatography. The results regarding bivalves showed that the EPA and AA levels are approximately ten times higher in liver than in adductor on the average for one year, and are remarkably dependent upon the season. The seasonal changes of EPA and AA contents in bivalve liver are seemingly related to those of plankton, which are the diet of bivalves. From these facts, it can be seen that plankton is the main origin of EPA and AA in bivalve bodies and supply these fatty acids all the way up to humans through a food chain.

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