40 likes | 54 Views
This study examines lipid biomarkers in ancient reindeer dung samples using chromatograms. Detected compounds include sterols, hopanoids, and triterpene alcohols, aiding in archaeological interpretation. Method details by Loic Harrault provided.
E N D
Test sample chromatograms LoicHarrault
Method: Archaeolstescan LH1017FROH TMS Reindeer dung 24-ethyl-5β-cholesta-22-en-3β-ol Sitosterol Sitostanol+ β-amyrin C28Δ5,7 or 8 24-ethyl-epicoprostanol Cholesterol 24-methylcholesta-5, 22-dien-3β-ol Schottenol 24-ethyl-coprostanol Coprostanol Hopanoid 24-ethyl-5β-cholesta-22-en-3α-ol Campestanol Cholestanol C29 or C30 triterpene alcohol * = seriesof unknown compounds with characteristic m/z fragment: 131, 215, 381 24-methyl-5a-cholest-22E-en-3b-ol α-amyrin 24-epi-fungisterol or Ergosta-7-en-3b-ol Stigmasterol Fucosterol ? 24-ethyl-5α-cholest-24(28)Z-en-3β-ol Epicoprostanol 24-ethyl-5α-cholesta-22-en-3β-ol (stigmastanol) Ursolic acid Betulin C28OH Citrostadienol + 2 ? Betulin derivative Archaeol Epi-b-campestanol Betulinic acid C29 Δ0 * Lichesterol * C30OH ? Avanasterol C28Δ5,7 or 8 C28Δ5,7 or 8 ? * 2 ? * * ? * ? * ?