A device that tricks people’s
tongues could be used to make healthy foods into delicious, exciting tasting
treats. The Taste Buddy is placed in the mouth before eating something boring. And
it then uses thermal and electric signals to make that taste far better, by
stimulating the taste buds. For the moment, that stimulation can only come in
the form of sweet or salty tastes. But in the future the people behind the tool
hope that they can change diets entirely, transforming salads into the taste of
juicy steak or making broccoli taste like chocolate. Researchers said what started
out as a fun engineering experiment has now led to something much more exciting
with the potential to have a positive social impact. The Taste Buddy could
eventually help save lives, by allowing people to switch to healthier food
choice. In its current early form the Taste Buddy consists of a 2cm wide tab
that sits on the tongue and is wired to a bulky processor. To enhance
sweetness, the device warms up very rapidly and stimulates specific taste
receptors that react to heat a weak electric current is used to target other
taste buds responsible for salty flavours. Members of the Public will have a
chance to try out the Taste Buddy for themselves at the Big Bang UK Young Scientists
and Engineers Fair. The event, aimed at young people interested in science,
technology and engineering, takes place from March 15 to 18 at the National
Exhibition Centre, Birmingham. It could be engineered to fit everyday utensils
such as cutlery, cups and cans. The team has begun working on a prototype
spoon. The invention exploits the chemical reactions happening in the mouth
when we eat. Sour and salty tastes are recognized when taste receptors on the
tongue detect the reaction between saliva and the acidity of hydrogen or sodium.
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