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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
02/02/2009 |
Data da última atualização: |
31/07/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
EVERSHED, R. P.; COPLEY, M. S.; DICKSON, L.; HANSEL, F. A. |
Afiliação: |
FABRICIO AUGUSTO HANSEL, CNPF. |
Título: |
Experimental evidence for the processing of marine animal products and other commodities containing polyunsaturated fatty acids in pottery vessels. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Archaeometry, v. 50, n. 1, p. 101-113, 2008. |
DOI: |
10.1111/j.1475-4754.2007.00368.x |
Idioma: |
Inglês |
Conteúdo: |
?-(o-Alkylphenyl )alkanoic acids are known to form in vitro from triunsaturated fatty acidsfollowing protracted heating. These compounds have recently been identified in absorbed lipid extracts obtained from archaeological pottery vessels, providing a potentially valuable new class of indicator for the processing of commodities, such as marine oils, which contain high abundances of polyunsaturated fatty acids. Experiments were conducted to assess whether ?-(o-alkylphenyl) alkanoic acids form when pure compounds and complex triacylglycerol mixtures are heated with a fired clay. The results demonstrate that ?-(o-alkylphenyl) alkanoic acids are only produced following heating of unsaturated fatty acids (tri-, di- and monounsaturated species) or complex unsaturated fatty acyl lipids at around 270°C. Heating saturated fatty acyl lipids does not yield ?-(o-alkylphenyl) alkanoic acids. Thus, when searching for evidence for the processing of marine derived animal fats in archaeological pottery vessels, it is essential that: ?-(o-alkylphenyl) alkanoic acids of carbonlength C18 and C20 should be present, ideally with C22 also detectable (if only in trace abundances), together with at least one of the three isoprenoid fatty acids (phytanic, pristanic or 4,8,12-tetramethyltridecanoic acid). |
Palavras-Chave: |
Arqueologia; Cerâmica. |
Thesagro: |
Ácido Graxo; Lipídio; Resíduo Orgânico. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02025naa a2200229 a 4500 001 1315456 005 2015-07-31 008 2008 bl uuuu u00u1 u #d 024 7 $a10.1111/j.1475-4754.2007.00368.x$2DOI 100 1 $aEVERSHED, R. P. 245 $aExperimental evidence for the processing of marine animal products and other commodities containing polyunsaturated fatty acids in pottery vessels.$h[electronic resource] 260 $c2008 520 $a?-(o-Alkylphenyl )alkanoic acids are known to form in vitro from triunsaturated fatty acidsfollowing protracted heating. These compounds have recently been identified in absorbed lipid extracts obtained from archaeological pottery vessels, providing a potentially valuable new class of indicator for the processing of commodities, such as marine oils, which contain high abundances of polyunsaturated fatty acids. Experiments were conducted to assess whether ?-(o-alkylphenyl) alkanoic acids form when pure compounds and complex triacylglycerol mixtures are heated with a fired clay. The results demonstrate that ?-(o-alkylphenyl) alkanoic acids are only produced following heating of unsaturated fatty acids (tri-, di- and monounsaturated species) or complex unsaturated fatty acyl lipids at around 270°C. Heating saturated fatty acyl lipids does not yield ?-(o-alkylphenyl) alkanoic acids. Thus, when searching for evidence for the processing of marine derived animal fats in archaeological pottery vessels, it is essential that: ?-(o-alkylphenyl) alkanoic acids of carbonlength C18 and C20 should be present, ideally with C22 also detectable (if only in trace abundances), together with at least one of the three isoprenoid fatty acids (phytanic, pristanic or 4,8,12-tetramethyltridecanoic acid). 650 $aÁcido Graxo 650 $aLipídio 650 $aResíduo Orgânico 653 $aArqueologia 653 $aCerâmica 700 1 $aCOPLEY, M. S. 700 1 $aDICKSON, L. 700 1 $aHANSEL, F. A. 773 $tArchaeometry$gv. 50, n. 1, p. 101-113, 2008.
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