Lipid Residue Analysis

摘要: Lipids are a broad category of compounds that insoluble in water (Chapter 5); those archaeological interest include fatty acids, triacylglycerols, sterols, waxes, and terpenes. Rottlander (1990) noted lipid analysis is suitable for the study vessel contents because they present virtually all human food, have relatively high stability with increased temperature (up to 400°C), their decomposition from cooking temperatures minimal, compared carbohydrates proteins. Over last four decades, different instrumental techniques been used obtain information about residues. The most commonly employed involve component separation gas chromatography: chromatography flame ionization detector (GC), mass spectrometry (GC/MS), and, recently, chromatography-combustion-isotope ratio (GC-C-IRMS). Researchers United Kingdom made extraordinary advances recognition biomarkers able provide precise identifications residues over 20 years (Evershed 1993a, 2000, 2008a, b; Heron Evershed 1993; et al. 1992, 2001). compilation edited by Barnard Eerkens (2007) includes examples use both criteria based on acid composition identify