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Adipocere--problems in estimating the length of time since death
M A Rothschild1, V Schmidt, V Schneider
1Institute of Forensic Medicine, Freie Universität Berlin, Germany.
Medicine and Law
|January 1, 1996
Summary
Adipocere formation, a waxy transformation in decomposing bodies, halts decomposition by creating a protective barrier. This process hinders accurate time-since-death estimations in forensic investigations.
Area of Science:
- Forensic Science
- Biochemistry
- Microbiology
Background:
- Estimating time since death is challenging with advanced decomposition.
- Adipocere formation, a waxy transformation, indicates advanced decay.
Purpose of the Study:
- To investigate the biochemical and microbial processes involved in adipocere formation.
- To understand how adipocere formation impacts the postmortem interval estimation.
Main Methods:
- Analysis of fatty acid composition in adipocere.
- Microbial analysis of adipocere-forming environments.
- Observation of decomposition under simulated airtight conditions.
Main Results:
- Adipocere formation involves hydrogenation of unsaturated fatty acids into saturated fatty acids by bacterial enzymes.
- The resulting fatty acids exhibit bactericidal properties, inhibiting further microbial decomposition.
- Airtight conditions and lack of calcium arrest adipocere development, preserving the body for extended periods.
Conclusions:
- Adipocere formation acts as a natural preservation process, significantly complicating postmortem interval determination.
- The biochemical changes and physical barrier created by adipocere prevent reliable time-since-death estimations in advanced decay cases.