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The Identification of Mono-, Di-, Tri-, and Tetragalactosyl-diacylglycerols and their Natural Estolides in Oat Kernels.
- Source :
- Lipids; Jun2008, Vol. 43 Issue 6, p533-548, 16p
- Publication Year :
- 2008
-
Abstract
- Oat kernels were extracted with methanol, and glycolipid-enriched fractions were prepared using silica solid phase extraction. Using direct infusion electrospray ionization (ESI) tandem mass spectrometry (MS), high performance liquid chromatography (HPLC)-ESI-MS, and HPLC-atmospheric pressure chemical ionization (APCI)-MS, we confirmed previous reports that digalactosyldiacylglycerol (DGDG) was the most abundant glycolipid in oat kernels and confirmed a previous report of the presence of a DGDG mono-estolide in oat kernels. In the current study we also identified several additional natural galactolipid estolides: two new DGDG estolides (di- and tri-estolides), two trigalactosyldiacylglycerol (TriGDG) estolides (mono- and di-estolides), and one tetragalactosyldiacylglycerol (TetraGDG) estolide (mono-estolide). The levels of total galactolipid estolides in oat kernels were estimated to be about 29% of the total glycolipid fraction. To our knowledge, this report is the first evidence of natural di- and tri-estolides of polar lipids. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00244201
- Volume :
- 43
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Lipids
- Publication Type :
- Academic Journal
- Accession number :
- 49684603
- Full Text :
- https://doi.org/10.1007/s11745-008-3181-6