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2021
Journal article
Analytical Pyrolysis and Mass Spectrometry to characterise lignin in archaeological wood
This review describes the capability of analytical pyrolysis-based techniques to provide data on lignin composition and on the chemical alteration undergone by lignin in archaeological wooden objects. Applications of Direct Exposure Mass Spectrometry (DE-MS), Evolved Gas Analysis Mass Spectrometry (EGA-MS), and single and double-shot Pyrolysis-Gas Chromatography/Mass Spectrometry (Py-GC/MS) in archaeological...archaeological wood; lignin; analytical pyrolysis; mass spectrometry
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2020
Journal article
Using analytical pyrolysis and scanning electron microscopy to evaluate charcoal formation of four wood taxa from the caatinga of north-east Brazil
People in north-east Brazil mostly rely on fuelwood and charcoal for domestic energy consumption. Traditionally, four local wood taxa (Mimosa tenuiflora, Mimosa ophthalmocentra, Croton sonderianus and Cenostigma pyramidale) from the caatinga have been selected for this purpose. As the final quality of charcoal is directly related to the charring conditions,... -
2019
Journal article
Historical formulations of lake pigments and dyes derived from lac: A study of compositional variability
“Lac” is a term referring to a pink-red-purple organic colourant derived from an insect and used as a lake pigment or a dye. Although historical sources indicate extensive usage, findings in historical samples remain scarce and are based on the detection of laccaic acids A and B, which are the...lac; shellac; historical recipes; photo-induced luminescence; HPLC-MSPCA
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2022
Journal article
Technical steps towards enhanced localization of proteins in cultural heritage samples by immunofluorescence microscopy and micro-reflectance imaging spectroscopy
This study presents the results obtained during the optimization phase of a protocol based on immunofluorescence microscopy (IFM) with the aim to characterize and localize proteins in fluid-rich samples of cultural heritage interest. Chicken serum albumin from chicken blood was considered the primary target. Ovalbumin from chicken egg albumen (egg...