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Utilising phytanic acid diastereomers for the characterisation of archaeological lipid residues in pottery samples

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JournalTetrahedron Letters
DateAccepted/In press - 6 Jan 2016
DatePublished (current) - 10 Feb 2016
Issue number6
Volume57
Number of pages5
Pages (from-to)703-707
Original languageEnglish

Abstract

Phytanic acid diastereomers, 3S,7R,11R,15-phytanic acid (SRR) and 3R,7R,11R,15-phytanic acid (RRR), were determined by GC-MS in extracts of archaeological ceramic. The SRR% was higher in pottery from coastal sites corresponding with 13C enriched n-alkanoic acid corroborating a predominantly marine origin for the food residues. Conversely, low SRR% and 13C depleted n-alkanoic acid were found at inland sites, which are most likely derived from ruminant products. These observations are explained by differences in the bacterial transformation of phytol to phytanic acid between ruminant and aquatic organisms and allow these products to be easily distinguished in archaeological contexts.

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© Authors 2016. This content is made available by the publisher under a Creative Commons Attribution Licence. This means that a user may copy, distribute and display the resource providing that they give credit. Users must adhere to the terms of the licence.

    Research areas

  • Archaeology, Biomarker, Diastereomer, GC-c-IRMS, Phytanic acid, Residue analysis

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