Cholesterol degradation in archaeological pottery mediated by fired clay and fatty acid pro-oxidants
| Autor: | Simon Hammann, Lucy J E Cramp, Richard P. Evershed, Mathilda Whittle |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010506 paleontology
fatty acids 01 natural sciences Biochemistry chemistry.chemical_compound Drug Discovery 0601 history and archaeology Archaeological pottery Ceramic degradation 0105 earth and related environmental sciences chemistry.chemical_classification Animal fat 060102 archaeology Cholesterol Cholesterol degradation Organic Chemistry Fatty acid cholesterol archaeology organic residue clay 06 humanities and the arts chemistry visual_art Environmental chemistry visual_art.visual_art_medium Degradation (geology) lipids (amino acids peptides and proteins) Pottery |
| Zdroj: | Hammann, S, Cramp, L, Whittle, M & Evershed, R 2018, ' Cholesterol degradation in archaeological pottery mediated by fired clay and fatty acid pro-oxidants ', Tetrahedron Letters, vol. 59, no. 50, pp. 4401-4404 . https://doi.org/10.1016/j.tetlet.2018.10.071 |
| ISSN: | 0040-4039 |
| Popis: | Cholesterol is generally absent in animal fat residues preserved in archaeological ceramic vessels. It is known from edible oil refining that during bleaching with activated clay sterols are degraded, largely via oxidation. Laboratory heating experiments using fired clay from replica pottery vessels promoted rapid degradation of cholesterol via oxidation. Furthermore, heating cholesterol with fatty acids (saturated and unsaturated) revealed additional degradation to occur independently of the ceramic matrix. As both conditions are met in archaeological pottery during animal (and plant) product processing involving heating, the very rare detection of sterols in organic residues can be explained. |
| Databáze: | OpenAIRE |
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