Differential Cationization of Fatty Acids with Monovalent Cations Studied by ESI-MS/MS and Computational Approach.
B Sudarshana ReddyP PavankumarL SridharSoumen SahaG Narahari SastryPrabhakar SripadiPublished in: Rapid communications in mass spectrometry : RCM (2018)
Among the studied monovalent cations, the cationization of FAs follow the order K+ >>Na+ >Li+ >Rb+ >Cs+ . The docosahexaenoic acid showed high efficiency in binding with K+ ion. The K+ ion binding efficiency of FAs depends on the number of double bonds in unsaturated FAs and the carbon chain length in saturated FAs. The cationization trends of FAs obtained from the ESI-MS, ESI-MS/MS analyses were in good agreement with solvent phase computational studies.