Abundances of Triacylglycerol Positional Isomers and Enantiomers Comprised of a Dipalmitoylglycerol Backbone and Short- or Medium-chain Fatty Acids in Bovine Milk Fat
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- Nagai Toshiharu
- Tsukishima Foods Industry Co. Ltd.
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- Watanabe Natsuko
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology
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- Yoshinaga Kazuaki
- Tsukishima Foods Industry Co. Ltd.
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- Mizobe Hoyo
- Tsukishima Foods Industry Co. Ltd.
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- Kojima Koichi
- Tsukishima Foods Industry Co. Ltd.
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- Kuroda Ikuma
- GL Sciences Inc.
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- Odanaka Yuki
- School of Pharmacy, Showa University
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- Saito Tadao
- Graduate School of Agricultural Science, Tohoku University
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- Beppu Fumiaki
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology
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- Gotoh Naohiro
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology
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Description
Bovine milk fat (BMF) is composed of triacylglycerols (TAG) rich in palmitic acid (P), oleic acid (O), and short-chain or medium-chain fatty acids (SCFAs or MCFAs). The composition and binding positions of the fatty acids on the glycerol backbone determine their physical and nutritional properties. SCFAs and MCFAs are known to characteristically bind to the sn-3 position of the TAGs in BMF; however, there are very few non-destructive analyses of TAG enantiomers binding the fatty acids at this position. We previously reported a method to resolve the enantiomers of TAGs, binding both long-chain saturated fatty acid and unsaturated fatty acid at the sn-1 and 3 positions, in palm oil, fish oil, and marine mammal oil using chiral HPLC. Here, we further developed a method to resolve several TAG enantiomers containing a dipalmitoyl (PP) glycerol backbone and one SCFA (or MCFA) in BMF. We revealed that the predominant TAG structure in BMF was homochiral, such as 1,2-dipalmitoyl-3-butyroyl-sn-glycerol. This is the first quantitative determination of many TAG enantiomers, which bind to a SCFA or MCFA, in BMF was evaluated simultaneously. Furthermore, the results indicated that the amount ratios of the positional isomers and enantiomers of TAGs consisting of a dipalmitoyl (PP) glycerol backbone and SCFA (or MCFA), resembled the whole TAG structures containing the other diacylglycerol backbones consisting of P, O, myristic acid, and/or stearic acid in BMF.
Journal
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- Journal of Oleo Science
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Journal of Oleo Science 64 (9), 943-952, 2015
Japan Oil Chemists' Society
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Details 詳細情報について
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- CRID
- 1390282679068291840
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- NII Article ID
- 130005096012
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- NII Book ID
- AA11503337
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- ISSN
- 13473352
- 13458957
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- NDL BIB ID
- 026681838
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- PubMed
- 26329769
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed