Application of peptide mass mapping on proteins in historical mortars

The reliable identification of proteinaceous binders in historical mortars and plasters represents a complicated analytical problem. In this paper the possibility of peptide mass mapping (PMM) in connection with the mass spectrometry is demonstrated. The presence of milk and collagen proteins was trustworthy proved in the samples of mortars taken from the Romanesque rotunda of Saint Catherine in Znojmo (Czech Republic).