Summary
Various microcystins (MCs) were isolated from extracts ofMicrocystis aeruginosa grown in lake Thang Cong, Hanoi, Vietnam.
MC-RR, MC-YR, and MC-WR were determined by liquid chromatography with mass spectrometric detection (LC-MS). Besides these major microcystins five minor compounds were identified as microcystins using fragmentation mass spectrometry (LC-MS-MS). Two minor compounds were identified as desmethyl variants of MC-WR and MC-RR, respectively, and a third as an MC-LR variant. Two components showed characteristic fragmentation profiles of MC but could not be characterised exactly owing to their low concentrations. Three other components (900–1100 dalton) proved not to be microcystins.
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Hummert, C., Dahlmann, J., Reinhardt, K. et al. Liquid chromatography-mass spectrometry identification of microcystins inMicrocystis aeruginosa strain from lake Thanh Cong, Hanoi, Vietnam. Chromatographia 54, 569–575 (2001). https://doi.org/10.1007/BF02492180
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DOI: https://doi.org/10.1007/BF02492180