British researchers from the University of York and the University of Oxford have shown the mechanism that leads to body odour in armpits by studying the molecular process at the ESRF and other lightsources.
Stepping into a cramped bus on a hot summer day can sometimes translate into having to hold your breath and a very unpleasant experience. Sweat production increases in hot weather, and, with it, body odour. Despite much research and antiperspirant deodorants, scientists still haven’t managed to selectively block body odour.
Researchers from the University of York and the University of Oxford have recently used the ESRF and Diamond Lightsource to find out what happens at a molecular level when we smell badly. They focused on the apocrine gland, which is found only in the armpit, genitalia and ear canal. It secrets an odourless lipid-rich viscous secretion, which is likely to play a role in scent generation, but it is not involved in thermoregulation.
It all comes down to bacteria. “The skin of our underarms provides a unique niche for bacteria,” explains investigator Gavin Thomas, professor in the department of biology at the University of York and co-leader of the study. “Through the secretions of various glands that open onto the skin or into hair follicles, this environment is nutrient-rich and hosts its own microbial community, the armpit microbiome, of many species of different microbes.”
Image: Picture showing how body odour is produced in armpits.
Credit: University of York and Oxford.