News From Terre Haute, Indiana

Community News Network

August 2, 2013

Study shows genetics can determine why we smell certain odors differently

The next time you argue with a friend about the whiff of cilantro in your stir-fry that he finds disgusting, blame his genes.

All of us inhabit our own flavor world that is highly dependent on our genetic blueprint for being able to smell certain odors, according to two studies a New Zealand research group published online Thursday in the journal Current Biology.

The perception of flavor while eating includes what your taste buds can detect — sweet, salty, bitter, sour and umami (often called savory) — but they play a meek supporting role to your sense of smell.

That sensory experiences of food differ from person to person has always been known anecdotally. Think of strong, hoppy beer or black coffee that some find revoltingly bitter but others can drink like water. But the researchers wanted to know how much of that variability is genetically hard-wired.

They had 187 people smell 10 different compounds, taking note of who could smell them at a certain concentration level and who couldn't. They sequenced each person's DNA, scanning their genomes to pick out parts that could possibly explain the variations in smell sensitivity.

Out of 10 scents tested, four had a strong genetic basis — malt, apple, blue cheese and violet. They were also independent of one another, so even if you have a super-nose for blue cheese, you might fall short when it comes to smelling violets.

One study found a single gene change linked to the floral scent found in violets. The other study more generally hunted down spots within the genome connected to three additional food-related smells.

Odors typically consist of molecular building blocks called aroma compounds. For example, while blue cheese gives off a whole bouquet of aromas, 2-heptanone is the chemical that really "gives blue cheese its blue cheesiness," said lead researcher Richard Newcomb of the New Zealand Institute for Plant and Food Research.

Text Only | Photo Reprints
Community News Network
Latest News
TribStar.com Poll
AP Video
Last Mass Lynching in U.S. Remains Unsolved Raw: Truck, Train Crash Leads to Fireball Raw: Fight Breaks Out in Ukraine Parliament Bodies of Malaysia Jet Victims Leave Ukraine Judge Ponders Overturning Colo. Gay Marriage Ban Clinton: "AIDS-Free Generation Within Our Reach" Disabled Veterans Memorial Nearing Completion Obama Signs Workforce Training Law Home-sharing Programs Help Seniors Crash Victims' Remains Reach Ukraine-held City Raw: Massive Explosion in Gaza City Ex-NYC Mayor: US Should Allow Flights to Israel NYPD Chief Calls for 'use of Force' Retraining Raw: Typhoon Brings Heavy Wind, Rain to Taiwan Raw: Israel Hits Gaza Targets, Destroys Mosques Fighting Rages Amid Mideast Truce Push New Orleans Plans to Recycle Cigarette Butts US Official: Most Migrant Children to Be Removed CDC Head Concerned About a Post-antibiotic Era Airlines Halt Travel to Israel Amid Violence
NDN Video
CDC Director Warns Of A World Where Antibiotics No Longer Work Whoa! Watch "Housewives" Star Do the Unthinkable Raw: Fight Breaks Out in Ukraine Parliament Chapter Two: Becoming a first-time director Chris Pratt Interrupts Interview To French Braid Intern's Hair Shirtless Super Mario Balotelli Dances While Ironing - @TheBuzzeronFOX LeBron apologizes to neighbors with cupcakes Justin Bieber In Calvin Klein Underwear Shoot Samsung Pre-Trolls The IPhone 6 With New Ad Jimmy Kimmel Introduces His Baby Girl Swim Daily, Nina Agdal in the Cook Islands Guilty Dog Apologizes to Baby for Stealing Her Toy Prince George Turns 1 and is Already a Trendsetter Train Collides With Semi Truck Carrying Lighter Fluid Kanye West Tells-All on Wedding in "GQ" Interview Tony Dungy Weighs in on Michael Sam Scarlett Johansson Set To Marry In August New Star Wars Episode XII X-Wing Revealed Obama: Putin must push separatists to aid MH17 probe Michigan inmates no longer allowed to wear orange due to 'OITNB'
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.
  • -

     

    March 12, 2010

activity