N-acylhomoserine lactones play a central role as semiochemicals in cell-density dependent communication phenomena in bacteria (quorum sensing, QS). Despite the high relevance of QS processes in medical, agricultural, economic and ecological contexts, the bandwidth of available methods for HSL detection and quantification was limited. In this work, independent strategies for the analysis of HSL by mass spectrometry-coupled capillary separation techniques (micellar electrokinetic chromatography, miniaturized liquid chromatography, capillary zone electrophoresis, gas chromatography) in connection with specific preconcentration and extraction methods and by ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometry are presented. The applicability of the methods for specific questions is demonstrated by real sample measurements.
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N-acylhomoserine lactones play a central role as semiochemicals in cell-density dependent communication phenomena in bacteria (quorum sensing, QS). Despite the high relevance of QS processes in medical, agricultural, economic and ecological contexts, the bandwidth of available methods for HSL detection and quantification was limited. In this work, independent strategies for the analysis of HSL by mass spectrometry-coupled capillary separation techniques (micellar electrokinetic chromatography, m...
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