Compare methods

	Lipid Residue Analysis	Stable Isotope Paleodiet & Mobility Analysis
Field	Archaeology	Archaeology
Family	Process / pipeline	Process / pipeline
Year of origin	2008	2006
Originator	Richard P. Evershed and the Bristol organic-geochemistry school	Synthesis of stable-isotope bioarchaeology; strontium methodology reviewed by R. Alexander Bentley
Type	Analytical pipeline for identifying foodstuffs from organic residues preserved in pottery	Methodological pipeline for trophic, dietary-source, and mobility inference from skeletal isotopes
Seminal source	Evershed, R. P. (2008). Organic Residue Analysis in Archaeology: The Archaeological Biomarker Revolution. Archaeometry, 50(6), 895-924.	Bentley, R. A. (2006). Strontium Isotopes from the Earth to the Archaeological Skeleton: A Review. Journal of Archaeological Method and Theory, 13(3), 135-187.
Aliases	Organic Residue Analysis, Pottery Lipid Analysis, Absorbed Residue Analysis, Biomarker Residue Analysis	Carbon-Nitrogen Collagen Isotope Analysis, Trophic Spacing Analysis, Bioarchaeological Isotope Methodology, Collagen Quality Screening
Related	2	2
Summary	Lipid residue analysis identifies the foodstuffs once processed, stored, or cooked in ancient pottery by recovering and characterizing the fatty molecules absorbed into the porous ceramic fabric. Lipids are hydrophobic, comparatively stable, and become trapped within vessel walls, where they can survive for millennia long after proteins and DNA have vanished, making them the most informative class of organic residue for reconstructing pot use. Richard Evershed and the Bristol school turned this insight into a rigorous analytical program — the 'archaeological biomarker revolution' — combining gas chromatography-mass spectrometry to identify diagnostic compounds with compound-specific carbon-isotope analysis of individual fatty acids to distinguish, for example, dairy from carcass fats and ruminant from non-ruminant sources. The result is direct molecular evidence of past diet and culinary practice from the vessels themselves.	Stable isotope paleodiet and mobility analysis is the methodology by which bioarchaeologists turn the isotopic chemistry of bone and tooth into quantitative statements about what people ate and where they lived. It rests on a chain of disciplined procedures rather than a single measurement: screening extracted collagen for diagenetic integrity using carbon-to-nitrogen atomic ratios, anchoring human values to a locally measured faunal baseline, quantifying trophic position from nitrogen-15 spacing, partitioning C3 versus C4 and marine carbon sources using the offset between collagen and apatite, and reconstructing residential mobility from biologically available strontium isotopes in tooth enamel. Bentley's review of strontium in the archaeological skeleton and Evershed's account of the biomarker revolution together frame the geochemical and analytical principles that make these inferences defensible.