Ah, the smell of spring. The untouched scent of newly boiled grass. The delicious scent of blooming lilacs. But what does the gray scent of your lake actually cause after you shoot one of the season’s early vegetables? That. asparagus Naturally. It does what it does, and that’s what it is.” asparagus Do you “pee” on this pungent aroma?
‘My urine smells afterwards. eat asparagus It’s a very strong smell,” says Daniel Reed, deputy director of the Monell Center for Chemical Emotions in Philadelphia and author of a 2011 study on how people make and perceive this unique asperge-upper-urine.
What is the aroma?
The asparagus The aroma is believed to come from the metabolism of asparagic acid, which occurs in asparagus. in asparagus In other sulfur compounds, such as methanethiol, the more visible aroma identified as in asparagus popyra, along with almost all others.
These chemicals tend to be volatile – they just evaporate – so that they end up in our nose.
‘I believe that some proteins and amino acids are in asparagus metabolized by different people and therefore people have different volatile sulfur profiles,” Reed said.
Causes of variation
Anecdotal evidence suggests that people distinguish themselves in situations where they the asparagus Smell. As “Dr. Steve” wrote in Men’s Fitness, “Not everyone has the opportunity to smell urine scents. of asparagus Those who do have the opportunity to smell them want everyone else to get that chance, and those who don’t experience the scent think those who do have the chance are crazy.”
As Reed and his colleagues understand, an individual’s ability to smell urine depends on both talent and the ability to create the scent. If someone does not notice the scent the asparagus scent is not noticed, you cannot be an aristocrat. Because it is due to the fact that they either do not make it or they do not experience the fragrance. Scientific fiction still varies widely in source estimates and in the magnitude of variation in people’s ability to smell asparagus PEE: According to two previous studies on South American population groups, 30% and 50% of people cannot understand the taste of Asperge-ERWT. On the other hand, studies on Israeli and Chinese populations demonstrate that they can do almost everything, according to Reed and her colleagues; according to a 2011 Reed document, data from earlier studies still demonstrate all sorts of totals regarding the percentage of people who make flavors.
Is variation genetic?
A study from 2010 by DNA Sequence Company 23andMe, published in the journal PLOS Genetics, reveals the genetic component of the ability to experience scents. asparagus Urine: a small piece of DNA that often differs among those who said they noticed “certain scents” when peeled after using vegetables. In addition to sex chromosomes, we all have two copies of each chromosome and thus of all genes. People whose DNA on both chromosomes in a particular location contained a “G” (genotype “g/g”) were less likely to find the flavor in their urine than DNA on one chromosome “g” and DNA on the other “a”. (genotype “g/a”) or “a” on both chromosomes (genotype “a/a”).
The position of the variant, located on chromosome 1 and known as rs4481887, is so close to the genes for various types of rheumeptors that scientists have no doubt at all about which sensors it might affect, the makers report. At the very least, the genomic study did not reveal whether the genetic variant affects creation, flavor detection, or both.
Researchers will investigate.
To find out, scientists at Monell University conducted a study in 2011 to distinguish between these two options. Participants in the study took urine monster before and after meals. asparagus After the meal, they took the urine Monster. They were then asked to smell as much urine Monster: one was collected after eating asparagus and one was asked to qualify its smoke before or after eating asparagus or bread. of asparagus . The scientists then signed the DNA of the members with RS4481887.
The result: “I was very surprised that some people did not give the fragrance. This was a new invention. We knew that some people did not have the opportunity to smell it, but we discovered that some people were not ready to produce it” .
In particular, 8% of the subjects were unable to produce the scent. Also, 6% of the subjects could not detect the scent. The researchers realized that the two capacities – odor production and fragrance detection – were not closely linked.
A 2011 study also showed that a gene variant on chromosome 1 was associated with the ability to experience odor, but not with the ability to produce odor. The study found that 75% of people with the “G/G” genotype were able to detect the following the asparagus fragrances, while 90% of those with genotype “G/A” or “A/A” were able to absorb odors.
This odor sensor does not account for the entire volatile drug recognition of of asparagus Van urine, but it certainly clarifies the visual acuity ratio that people have,” Reed said.
Why do we care?
Hey, in case Proust finds it interesting: …..
In addition, differences in protein metabolism can in asparagus Reed says other, more pressing wells are involved.
On a superficial level, it’s amazing to consider that elementary school is a world in which people feel differently,” she says.
Follow Ashley P. Taylor @crenshawseeds; follow Live Science @LivesCience, Facebook, and Google+. A unique message about real science.
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