Scientists identify the key enzyme behind the pungent smell of & # 39; BO & # 39; – and it could lead to the development of a new generation of deodorants
- The BO enzyme is produced by Staphylococcus hominis bacteria that live in armpits
- The enzyme turns odorless chemicals in sweat into sharp compounds
- Believed that the enzyme was inherited from ancient human ancestors, now extinct
The chemical culprit behind body odor has been identified by scientists.
An enzyme that is made by bacteria found in human armpits has been found to produce the pungent odor that we know as BO.
The so-called "BO enzyme" is produced by bacteria called Staphylococcus hominis, which humans have inherited from our ancient ancestors, which are now extinct.
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An enzyme made by bacteria found in human armpits has been found to produce the pungent smell that we know as BO (stick).
University of York researchers worked with Unilever and found that body odor has probably plagued Homo sapiens since our first development.
We inherited it from our more primitive predecessors and now the smelly bacteria call our armpits home.
Dr. Gordon James from Unilever says: “This research has opened our eyes.
"It was fascinating to discover that an important odor-producing enzyme is only present in a few selected armpit bacteria – and developed there tens of millions of years ago."
By identifying the specific odor compound, scientists believe they can create deodorants that neutralize the enzyme and eradicate BO.
Dr. Michelle Rudden from the Department of Biology at the University of York said: "By solving the structure of this" BO enzyme "we were able to precisely determine the molecular step in certain bacteria that form the odor molecules.
The & # 39; BO enzyme & # 39; is produced by bacteria called Staphylococcus hominis, which first existed in ancient human ancestors. We inherited it from our more primitive predecessors and now the smelly bacteria call our armpits home (camp)
Cuddling your partner's T-shirt in bed improves sleep
A study by researchers from the University of British Columbia found that sleeping with the natural smell of a lover improves the quality of rest.
Sleeping with their smell, even when they're not physically there, improves sleep by nine minutes a night – that's an hour a week – and reduces whirling and spinning.
The scientists claim that the benefits are as great as taking sleeping pills such as melatonin supplements.
The scientists carried out experiments in which 155 participants slept with two different T-shirts as pillow cases.
One wore her partner's scent and the other was completely clean and boring.
"This is an important step forward in understanding how body odor works and enables the development of targeted inhibitors that stop BO production at the source without disrupting the armpit microbiome."
The enzymes produced by the bacteria bind to odorless compounds that are made by the body's apocrine glands.
These are in the skin and produce sweat and open up in hair follicles. They are just under the arm, around the nipple and the external genitalia.
Humans also have excrine glands that extend all over the body and do not open into hair follicles.
While excrine glands are known to be useful in thermoregulation, little is known about the hairy apocrine glands except that they stink and are hairy.
Scientists know that bacteria live there, and this microbiota is essential for its functionality.
This latest study, published in Scientific Reports, found that odorless precursor chemicals that are secreted from the glands are sliced by the enzyme.
This converts the harmless, odorless chemicals into thio alcohols, which the researchers describe as "the hottest volatile substances" in sweat, although they are only found in traces.
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