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Stereospecific analysis of triacyl-sn-glycerols in Docosahexaenoic acid-rich fish oils

Journal of the American Oil Chemists’ Society volume 73, pages 483–487 (1996)Cite this article

Abstract

This paper presents the positional distribution of fatty acids in docosahexaenoic acid (22∶6n-3)-rich fish oil triacyl-sn-glycerols (TG). Stereospecific analysis of TG was carried out by a nonenzymatic method. The TG of bonito head oil, obtained after a winterization process, contained 22∶6n-3 at concentrations of 28,7, and 49 mole % in thesn-1,sn-2, andsn-3 positions, respectively. In the TG of oil before the winterization process, 22∶6n-3 was concentrated in thesn-3 position, followed evenly by thesn-1 andsn-2 positions. Tuna orbital oil, obtained after winterization, showed the preferential association of 22∶6n-3 to thesn-3 position, followed by thesn-1 position. This distribution pattern was similar to that observed for seal oil TG rather than sardine oil TG. The bonito head and tuna orbital oils are useful as fish oils with characteristics different from those of common fish oils, such as menhaden, sardine, and herring oils.

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Authors and Affiliations

  1. Department of Marine Bioresources Chemistry, Faculty of Fisheries, Hokkaido University, Minatocho, 041, Hokodate, Japan

    Yasuhiro Ando, Toru Ota & Yukiko Matsuhira

  2. Sagami Research Center, Nishi-Ohnuma, 229, Sagamihara, Japan

    Kazunaga Yazawa

Authors
  1. Yasuhiro Ando
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  2. Toru Ota
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  3. Yukiko Matsuhira
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  4. Kazunaga Yazawa
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Ando, Y., Ota, T., Matsuhira, Y. et al. Stereospecific analysis of triacyl-sn-glycerols in Docosahexaenoic acid-rich fish oils. J Amer Oil Chem Soc 73, 483–487 (1996). https://doi.org/10.1007/BF02523923

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  • DOI: https://doi.org/10.1007/BF02523923

Key words

  • Bonito
  • docosahexaenoic acid
  • fatty acid
  • fish oil
  • positional distribution
  • sardine
  • seal
  • stereospecific analysis
  • triacyl-sn-glycerols
  • tuna