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

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• 作者：Alexandre Lucquin^a ; ^{alexandre.lucquin@york.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; André ; C. Colonese^a ; Thomas F.G. Farrell^a ; ^b ; Oliver E. Craig^a
• 关键词：Phytanic acid ; Diastereomer ; GC-c-IRMS ; Biomarker ; Archaeology ; Residue analysis
• 刊名：Tetrahedron Letters
• 出版年：2016
• 出版时间：10 February 2016
• 年：2016
• 卷：57
• 期：6
• 页码：703-707
• 全文大小：454 K

文摘

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.