Degradation von Biomolekçlen in Knochen: Auswirkung auf die biologische Spurenkunde am Beispiel stabiler Isotopenverhåltnisse im Kollagen
Harbeck, Michaela;Dobberstein, Reimer;Ritz-Timme, Stefanie; Schröder, Inge;Grupe, Gisela
Modern bone samples were experimentally degraded by incubation into water at increased temperature and examined in terms of their collagen content, the stable C and N isotopic ratios, and the molar C/N ratio. The same analyses were carried out with archaeological human bone of varying age (300 up to 8000 years). The experimentally degraded samples exhibited changes of the collagen's integrity, which influence the stable isotope ratios. In the case of the archaeological material, a correlation between stable d13C- and d15N-values and collagen content could be demonstrated. The molar C:N ratio was no suitable criterion for the assessment of the state of preservation of extractable collagen.