Polar and non-polar organic binder characterization in Pompeian wall paintings: comparison to a simulated painting mimicking an "a secco" technique |
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Authors: | Corso Gaetano Gelzo Monica Sanges Carmen Chambery Angela Di Maro Antimo Severino Valeria Dello Russo Antonio Piccioli Ciro Arcari Paolo |
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Institution: | (1) Dipartimento di Biochimica e Biotecnologie Mediche, Universit? di Napoli Federico II, Via S. Pansini, 5-80131 Napoli, Italy;(2) Dipartimento di Scienze Biomediche, Universit? di Foggia, Via L. Pinto, 1-71100 Foggia, Italy;(3) Dipartimento di Scienze per la Vita, Seconda Universit? di Napoli, Via Vivaldi 43, 81100 Caserta, Italy;(4) Accademia di Belle Arti di Napoli, Via Costantinopoli, 107-80138 Napoli, Italy;(5) CEINGE-Biotecnologie Avanzate s.c.a.r.l, Via Gaetano Salvatore, 486-80145 Napoli, Italy; |
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Abstract: | The use of Fourier transform infrared spectromicroscopy and mass spectrometry (MS) allowed us to characterize the composition
of polar and non-polar binders present in sporadic wall paint fragments taken from Pompeii’s archaeological excavation. The
analyses of the polar and non-polar binder components extracted from paint powder layer showed the presence of amino acids,
sugars, and fatty acids but the absence of proteinaceous material. These results are consistent with a water tempera painting
mixture composed of pigments, flours, gums, and oils and are in agreement with those obtained from a simulated wall paint
sample made for mimicking an ancient “a secco” technique. Notably, for the first time, we report the capability to discriminate
by tandem MS the presence of free amino acids in the paint layer. |
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