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Reinvestigation of positional distribution of tetracosahexaenoic acid in triacyl-sn-glycerols of flathead flounder flesh

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Title: Reinvestigation of positional distribution of tetracosahexaenoic acid in triacyl-sn-glycerols of flathead flounder flesh
Authors: Tomita, Yuki Browse this author
Ando, Yasuhiro Browse this author →KAKEN DB
Keywords: Fatty acid
Flathead flounder
Hippoglossoides dubius
Stereospecific analysis
Tetracosahexaenoic acid
Triacylglycerol
Issue Date: Apr-2009
Publisher: Springer
Journal Title: Fisheries Science
Volume: 75
Issue: 2
Start Page: 445
End Page: 451
Publisher DOI: 10.1007/s12562-008-0048-y
Abstract: Positional distribution of fatty acids in triacyl-sn-glycerols (TAG) of the flathead flounder Hippoglossoides dubius has been reinvestigated in order to accurately determine the contents of tetracosahexaenoic acid (24:6n-3) in the sn-1, sn-2, and sn-3 positions. Flesh TAG obtained from three flounders were subjected to stereospecific analysis using a suitable procedure for fish TAG analysis. The 24:6n-3 acid was found in the three positions at the concentrations of 0.3--5.5 mole% (the sn-1 position), 1.6--23.3 mole% (the sn-2 position), and 0.6--8.9 mole% (the sn-3 position). In contrast to a previous analysis, the present analysis revealed that 24:6n-3 is preferentially esterified in the sn-2 position followed by the sn-3 and sn-1 positions. Other polyunsaturated fatty acids, docosahexaenoic acid (22:6n-3; DHA) and docosapentaenoic acid (22:5n-3; DPA), showed a similar distribution pattern. These results indicate that the general tendency observed for long-chain polyunsaturated fatty acids in marine fish TAG can be extended to the distribution of 24:6n-3 in flathead flounder TAG. Because the use of flathead flounders is entirely for human food, we thus intake 24:6n-3 concentrated in the sn-2 position of their TAG.
Rights: © 2009 公益社団法人日本水産学会
© 2009 The Japanese Society of Fisheries Science
The final publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/44612
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 安藤 靖浩

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