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Label-assisted laser desorption/ionization mass spectrometry (LA-LDI-MS): use of pyrene aldehyde for detection of biogenic amines, amino acids and peptides†
Arundhoti Mandal,Amit K. Das,Amit Basak
RSC Advances Pub Date : 12/01/2015 00:00:00 , DOI:10.1039/C5RA20678B
Abstract

Label-assisted laser desorption/ionization (LA-LDI) technique has recently been applied to the detection of small molecules through a time of flight (TOF) mass spectrometric measurement. By excluding the external matrix, the mass spectrum becomes much cleaner being free of matrix related peaks and noises. Peaks corresponding to compounds/complexes formed between the analytes and the label are mostly seen in the spectrum. In this paper we report a LA-LDI mass spectrometry based method for detection of amines, including the ones ubiquitous to biological samples like biogenic amines, amino acids, di- and tripeptides using 1-pyrene carboxaldehyde as the LDI label.

Graphical abstract: Label-assisted laser desorption/ionization mass spectrometry (LA-LDI-MS): use of pyrene aldehyde for detection of biogenic amines, amino acids and peptides
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