Team:Paris Bettencourt/Project/Old People Smell
From 2014.igem.org
BACKGROUND
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AIMS
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RESULTS
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Introduction | Motivation | Aims | Results | References |
Aims and Achievement
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Fig. 2-nonenal formation in an old-person skin
Introduction
Body odor is affected by age. The existence of a characteristic "old person smell" has been long discussed anecdotally and recently confirmed by experiment. Even untrained smellers can classify age by scent alone (Mitro et al., 2012) The presence of 2-nonenal in body odor is correlated with age and detectable only in people over 40 (Haze et al., 2001).
2-nonenal is an unsaturated aldehyde smelling of orris, cucumber and fat (Floavornet database). It is detectable to the human nose at concentrations as low as 3 ppm (Mitro et al., 2012). The exact source of 2-nonenal in sweat is not known, but it is believed to derive from skin-secreted lipids, oxidized by bacterial lipid peroxidases (Mitro et al., 2012).
Results
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Fig. Word cloud describing 2-nonenal
Methods
The deterioration of personal odor due to aging may be a serious social problem for some people which would like to keep youth body odor. Moreover, the 2-nonenal smell is mostly perceived as unpleasant, thus people with body odor marked with this compound may undergo unfriendly reactions based on their odor. Therefore, iGEM Paris Bettencourt Team decided to study the 2-nonenal relationship with the human skin microbiome in order to help aged people neutralize their body odor.
References
- ref1- ref2