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28.05.2016 | Original Article

Microbial population analysis improves the evidential value of faecal traces in forensic investigations

verfasst von: Frederike C. A. Quaak, Mei-Lan M. de Graaf, Rob Weterings, Irene Kuiper

Erschienen in: International Journal of Legal Medicine | Ausgabe 1/2017

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Abstract

The forensic science community has a growing interest in microbial population analysis, especially the microbial populations found inside and on the human body. Both their high abundance, microbes outnumber human cells by a factor 10, and their diversity, different sites of the human body harbour different microbial communities, make them an interesting tool for forensics. Faecal material is a type of trace evidence which can be found in a variety of criminal cases, but is often being ignored in forensic investigations. Deriving a human short tandem repeat (STR) profile from a faecal sample can be challenging. However, the microbial communities within faecal material can be of additional criminalistic value in linking a faecal trace to the possible donor. We present a microarray technique in which the faecal microbial community is used to differentiate between faecal samples and developed a decision model to predict the possible common origin of questioned samples. The results show that this technique may be a useful additional tool when no or only partial human STR profiles can be generated.
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Metadaten
Titel
Microbial population analysis improves the evidential value of faecal traces in forensic investigations
verfasst von
Frederike C. A. Quaak
Mei-Lan M. de Graaf
Rob Weterings
Irene Kuiper
Publikationsdatum
28.05.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
International Journal of Legal Medicine / Ausgabe 1/2017
Print ISSN: 0937-9827
Elektronische ISSN: 1437-1596
DOI
https://doi.org/10.1007/s00414-016-1390-8

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