Actual ratios of triacylglycerol positional isomers and enantiomers comprising saturated fatty acids and highly unsaturated fatty acids in fishes and marine mammals

Toshiharu Nagai, Yumiko Matsumoto, Yanying Jiang, Keiko Ishikawa, Tokuhisa Wakatabe, Hoyo Mizobe, Kazuaki Yoshinaga, Koichi Kojima, Ikuma Kuroda, Tadao Saito, Fumiaki Beppu, Naohiro Gotoh

研究成果: Article査読

13 被引用数 (Scopus)

抄録

It has been previously shown that the positional isomers of triacylglycerol (TAG) containing palmitic acid (P) and highly unsaturated fatty acids (HUFAs) such as DHA (D) and EPA (E) vary between fishes and marine mammals. However, it has not yet been understood why in marine mammals HUFAs are located only at the α position when two palmitic acid chains combine, and not in fishes. In order to gain further understanding of the biosynthetic pathways involved in the formation of these asymmetric TAGs, we investigated whether the HUFA in the TAG of marine mammals exists predominantly at the sn-1 or sn-3 position. We examined the TAG positional isomers and enantiomers in marine organisms in detail. As a result, while PDP and PEP were not detected, sn-PPD and sn-PPE were found in abundance in marine mammals. For fishes, on the other hand, PDP, PEP, sn-PPD, and sn-PPE were all identified. In the case of TAGs that contain two HUFAs and one palmitic acid, marine mammals were rich in DPD and EPE whereas fishes were rich in sn-PDD and sn-PEE.

本文言語English
ページ(範囲)1009-1015
ページ数7
ジャーナルJournal of oleo science
62
12
DOI
出版ステータスPublished - 2013 12 4

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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