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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Lipidomic analysis of vernix caseosa
 Harazim, Eva ; Cvačka, Josef (advisor) ; Lísa, Miroslav (referee) ; Kuda, Ondřej (referee)
Methods of analytical chemistry are widely used in lipidomics. Separation techniques coupled to mass spectrometry or nuclear magnetic resonance are used very often. They make it possible to identify lipids present in the matrix in very small quantities. This work summarizes the application of modern analytical methods and instrumentation for identifying and characterizing lipids in vernix caseosa. It is shown how I contributed during the Ph.D. studies to the elucidation of the structure and characterization of unknown lipid classes followed by more detailed description of those lipid classes already identified in vernix caseosa. An integral part of my work was the application of the method enabling the localization of double bonds developed by our laboratory in triacylglycerols and 1,2-diol diesters in vernix caseosa. This analytical method is based on the formation of an acetonitrile adduct in an ionization source of a mass spectrometer enabling atmospheric pressure ionization. The complexity of the triacylglycerol class did not allow a complete characterization of the double bonds. However, the fragmentation mostly showed that double bonds up to n-12 position are present, but small peaks in some spectra also indicated double bonds at more distant positions from the chain termini. I have also...
Detailed record
Lipidomic analysis of vernix caseosa
 Harazim, Eva ; Cvačka, Josef (advisor) ; Lísa, Miroslav (referee) ; Kuda, Ondřej (referee)
Methods of analytical chemistry are widely used in lipidomics. Separation techniques coupled to mass spectrometry or nuclear magnetic resonance are used very often. They make it possible to identify lipids present in the matrix in very small quantities. This work summarizes the application of modern analytical methods and instrumentation for identifying and characterizing lipids in vernix caseosa. It is shown how I contributed during the Ph.D. studies to the elucidation of the structure and characterization of unknown lipid classes followed by more detailed description of those lipid classes already identified in vernix caseosa. An integral part of my work was the application of the method enabling the localization of double bonds developed by our laboratory in triacylglycerols and 1,2-diol diesters in vernix caseosa. This analytical method is based on the formation of an acetonitrile adduct in an ionization source of a mass spectrometer enabling atmospheric pressure ionization. The complexity of the triacylglycerol class did not allow a complete characterization of the double bonds. However, the fragmentation mostly showed that double bonds up to n-12 position are present, but small peaks in some spectra also indicated double bonds at more distant positions from the chain termini. I have also...
Detailed record

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