期刊
MICROCHEMICAL JOURNAL
卷 134, 期 -, 页码 146-153出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.microc.2017.05.018
关键词
Parchment; Paint; Manuscript; MALDI; Py-GC-MS
资金
- Fondo di Sviluppo e Coesione - APQ Ricerca Regione Puglia Programma regionale a sostegno della specializzazione intelligente e della sostenibilifa sociale ed ambientale - FutureInResearch (Italy)
Two medieval illuminated parchment scrolls of the Museo Diocesano of Bari (Italy), i.e., the Exultet I and the Benedictio ignis et fonds, were examined. Micro-samples of parchment were analyzed by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) for the identification of collagen and its animal origin. Thanks to the overlapping folios, representing a unique situation for illuminated manuscripts, it was possible to sample tiny amounts of paint layers. A very small fraction was first investigated by pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), laying the way for an overview of all organic components. Detailed information on polysaccharides, and proteins and lipids were then attained by performing GC-MS and MALDI-MS analysis, respectively. Accordingly, the presence of paint binders based on egg white with the addition of some egg yolk was established in the Benedictio ignis et fonds, whereas in the Exultet I collagen and a fruit tree gum were identified, the latter probably due to a surface treatment of the entire scroll. The proposed multi-technique approach using easy sample pre-treatments on very small samples may shed a light on the medieval paint recipes and on the type of animal hides used for manufacturing this kind of precious parchment scrolls. (C) 2017 Elsevier B.V. All rights reserved.
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