Fig 11. Reconstructed gas chromatography-mass spectrometry (GC-MS) total ion chromatogram (TIC) of the trimethylsilylated total lipid extract of (a) Kha, black coating on his outer coffin and (b) Merit, black coating on her outer coffin.
Peak identities (‘n’ indicates carbon chain length; where shown, i indicates degree of unsaturation): filled triangles, Cn:i indicates fatty acids; filled pentagons indicate sesquiterpenoids and their derivatives. The letters ms represent a monosaccharide. Also shown are the structures of two aromatic acids identified: 4-hydroxybenzoic acid and terephthalic acid; and the structures of six Pistacia triterpenoid compounds identified: 22,23,24,25,26,27-hexakisnor-dammaran-3,20-dione, 24,28-bisnor-olean-17-en-3-one, 28-nor-olean-17-en-3-one, moronic acid, oleanonic acid and isomasticadienonic acid.