Identification of regioisomers and enantiomers of triacylglycerols in different yeasts using reversed- and chiral-phase LC-MS
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu hodnotící studie, časopisecké články, práce podpořená grantem
PubMed
23963893
DOI
10.1002/jssc.201300657
Knihovny.cz E-zdroje
- Klíčová slova
- Atmospheric pressure chemical ionization mass spectrometry, Chiral LC, Reversed phase LC, Triacylglycerols, Yeast,
- MeSH
- chromatografie s reverzní fází metody MeSH
- kvasinky chemie klasifikace metabolismus MeSH
- stereoizomerie MeSH
- triglyceridy chemie metabolismus MeSH
- vysokoúčinná kapalinová chromatografie metody MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
- práce podpořená grantem MeSH
- Názvy látek
- triglyceridy MeSH
LC with atmospheric pressure chemical ionization (ACPI) MS with RP and chiral phase was used for separation of triacylglycerols (TAGs) from yeasts of the genera Candida, Kluyveromyces, Rhodotorula, Saccharomyces, Torulospora, Trichosporon, and Yarrowia. Chiral LC-APCI-MS is based on using two columns in series packed with a 3,5-dimethylphenyl carbamate modified β-cyclodextrin chiral phase. All regioisomers and enantiomers of TAGs containing one to five double bonds were separated. Molecular species of TAGs, i.e. regioisomers and enantiomers, were identified and quantified by MS/MS. Among the 94 identified TAGs, the most abundant were triolein, oleopalmitoleoolein, and dipalmitoleoolein. In strains producing palmitoleic acid in amounts >25% of total fatty acids (FAs), this acid, or unsaturated FA is bound in sn-1. In strains containing palmitoleic acid at 10-25% total FAs this acid is mainly bound in sn-3, saturated FA being bound in sn-1. Strains containing <10% palmitoleic acid form preferentially symmetrical TAGs.
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Separation of enantiomeric triacylglycerols by chiral-phase HPLC
