1,8-Bis(dimethylamino)naphthalene/9-aminoacridine: A new binary matrix for lipid fingerprinting of intact bacteria by matrix assisted laser desorption ionization mass spectrometry.

Highlights: [•] New binary matrix for less ionizable lipid analysis with no interfering peaks. [•] Combined MALDI and X-ray photoelectron spectroscopy (XPS) analyses. [•] Fast lipid fingerprint on Gram positive and Gram negative bacteria by MALDI MS. [•] Mapping of phospholipids by XPS imaging. [•] Very fast membrane lipid extraction procedure. [ABSTRACT FROM AUTHOR]