Microbial Forensics: Forensic Relevance of the Individual Person’s Microbial Signature
Journal Title: SSR Institute of International Journal of Life Sciences (SSR-IIJLS) - Year 2018, Vol 4, Issue 5
Abstract
Forensic investigation involves the collecting, assembling, and analysis of all crime-related evidence with the aim of getting to a conclusion about a suspect. Humans have microorganisms present in the gut, mouth, and skin, unique to each individual. Individual microbiome can be distinguished based on the bacterial 16S rRNA to tell the bacterial species diversity between and among persons. Sterilized swab-sticks were used to sample fifteen individuals’ fingertips, their personal items, office doorknob and a college photocopier. Skin-associated bacteria were readily recovered from surfaces and the structure of these bacterial communities can be used to link individuals to the objects they had touched. We compared the bacterial communities on objects and skin to match the objects to the individual. The 16S rRNA gene PCR polymorphism was used to analyze the bacterial community for each person and object. The higher similarity of bacterial community between individuals’ and personal laptop keyboards, office chairs and office member’s fingertips were evident than between the doorknob and the photocopier. Highest bacterial species diversity was observed in doorknob followed by the photocopier. Hence, an individual’s bacterial profile can be used as a human identification tool alongside other tools in forensic fields especially in cases where there is evidence of deficiency.
Authors and Affiliations
Abazuh Uchenna Desmond, Oyejide Nicholas, Olasehinde Olushola Emmanuel
Keywords
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- EP ID EP671123
- DOI 10.21276/ijlssr.2018.4.5.11
- Views 95
- Downloads 0
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