Research Interests: Archaeology and Residue
Research Interests:
A new multistep analytical methodology is described in this paper for the precise identification of triacylglycerols, which are biomarkers of dairy products and subcutaneous fats, that may be chemically identified in archaeological... more
A new multistep analytical methodology is described in this paper for the precise identification of triacylglycerols, which are biomarkers of dairy products and subcutaneous fats, that may be chemically identified in archaeological pottery. It consists of the analysis of the total lipid extract from different kinds of fats by high-temperature gas chromatography, performed in order to select the ceramic vessels in which animal fats are well preserved, followed by nanoelectrospray QqTOF mass spectrometry that allows for distinguishing the specific origins of the lipids detected (namely, cow, sheep, or goat). The analysis of model samples, cow and goat dairy products and cow and sheep adipose fats, was successfully achieved. The fatty acid composition of each triacylglycerol was identified, which allowed for the discrimination of subcutaneous fats and dairy fats and distinguishing between cow and goat milk. This methodology was then applied to archaeological samples, and the presence of goat milk, cow milk, and possibly sheep subcutaneous fat was assessed based on the discriminating criteria found on modern fats.
Research Interests: Chemical Engineering, Archaeology, Analytical Chemistry, Mass Spectrometry, Sample Preparation, and 12 moreElectrospray, Pottery, Adipose tissue, Animals, Tandem Mass Spectrometry, Gas Chromatography, Triglycerides, Milk, Liquid Chromatography / Electrospray Ionization Mass Spectrometry, Fat, Species Specificity, and Animal Fat
An art historian, a paintings conservator, and a chemist jointly conducted this study of a group of 15th- to 18th-century Ethiopian icons from the museum of the Institute of Ethiopian Studies in Addis-Ababa. The study pertains to the... more
An art historian, a paintings conservator, and a chemist jointly conducted this study of a group of 15th- to 18th-century Ethiopian icons from the museum of the Institute of Ethiopian Studies in Addis-Ababa. The study pertains to the sampling and analysis of the constitutive material, pigments, binder, and varnish, a sanitary and esthetic assessment of the works, as well as a historical study. The results presented mainly concern the characterization of the pigments and varnishes and how they were used for the four icons dated and attributed to two painters, Feré Seyon and Brancaleon (15th century to the early 16th century). The results showed that similar techniques were used, specifically an identical selection of pigments and the presence of oil varnish, while each also had its unique characteristics.
Research Interests: Archaeology, Prehistoric Archaeology, Material Culture Studies, Balkan Studies, Neolithic Archaeology, and 8 moreNeolithic Transition, Neolithic Europe, Ancient Agriculture & Farming (Archaeology), Early Neolithic pottery technology, Neolithic of the Balkans, Pottery technology and function, Social aspects of food production and ecological farming systems, and Pottery Archaeology
Research Interests:
A new multistep analytical methodology is described in this paper for the precise identification of triacylglycerols, which are biomarkers of dairy products and subcutaneous fats, that may be chemically identified in archaeological... more
A new multistep analytical methodology is described in this paper for the precise identification of triacylglycerols, which are biomarkers of dairy products and subcutaneous fats, that may be chemically identified in archaeological pottery. It consists of the analysis of the total lipid extract from different kinds of fats by high-temperature gas chromatography, performed in order to select the ceramic vessels in which animal fats are well preserved, followed by nanoelectrospray QqTOF mass spectrometry that allows for distinguishing the specific origins of the lipids detected (namely, cow, sheep, or goat). The analysis of model samples, cow and goat dairy products and cow and sheep adipose fats, was successfully achieved. The fatty acid composition of each triacylglycerol was identified, which allowed for the discrimination of subcutaneous fats and dairy fats and distinguishing between cow and goat milk. This methodology was then applied to archaeological samples, and the presence of goat milk, cow milk, and possibly sheep subcutaneous fat was assessed based on the discriminating criteria found on modern fats.
