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The identification of poultry processing in archaeological ceramic vessels using in situ isotope references for organic residue analysis

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JournalJournal of archaeological science
DateAccepted/In press - 1 Dec 2016
DateE-pub ahead of print - 13 Jan 2017
DatePublished (current) - Feb 2017
Volume78
Pages (from-to)179-192
Early online date13/01/17
Original languageEnglish

Abstract

Poultry products are rarely considered when reconstructing pottery use through organic residue analysis, impinging upon our understanding of the changing role of these products in the past. Here we evaluate an isotopic approach for distinguishing chicken fats from other animal products. We compare the carbon isotopes of fatty acids extracted from modern tissues and archaeological bones and demonstrate that archaeological bones from contexts associated with the pottery provide suitable reference ranges for distinguishing omnivorous animal products (e.g. pigs vs. chickens) in pots. When applied to pottery from the Anglo-Saxon site of Flixborough, England, we succeeded in identifying residues derived from chicken fats that otherwise could not be distinguished from other monogastric and ruminant animals using modern reference values only. This provides the first direct evidence for the processing of poultry or their products in pottery. The results highlight the utility of ‘in-situ’ archaeological bone lipids to identify omnivorous animal-derived lipids in archaeological ceramic vessels, although due to potential variation in past animal diets it unlikely that such reference ranges can be applied globally.

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©2016 The Author(s).

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