Researchers at Ohio State University have developed e-Taste, an advanced electronic tongue capable of simulating real food flavors. This innovative system analyzes food samples and recreates their tastes using specific chemical compounds. By mimicking five key taste components—saltiness, sourness, sweetness, bitterness, and umami—e-Taste offers a new way to experience flavors digitally. Scientists believe this breakthrough could transform virtual dining and immersive digital experiences.
The device uses sensors to detect taste compounds in food. Which then converts the information into digital signals. A pump delivers flavored hydrogels through a small tube under the tongue allowing users to experience different tastes.
Researchers tested the system’s accuracy by evaluating individual and complex flavors. Ten participants rated its ability to replicate sourness in one experiment. With the artificial taste matching the real one in 70% of the cases. Another test involved six participants who identified foods like lemonade, cake, fried egg, fish soup and coffee. The six participants correctly recognized the flavors more than 80% of the time.
Scientists believe that the e-Taste system could revolutionize virtual reality by allowing users to taste digital food. But still, experts caution that taste involves more than just flavor. Alan Chalmers from the University of Warwick explains that aroma and color play a crucial role in how food is perceived.
According to Alan, closing the nose and eyes while eating a strawberry makes it taste sour. The brain identifies the flavor as sweet because of both the strawberry's appearance and its smell. Although the e-Taste system can successfully measure and recreate basic taste sensations, it still does not fully replicate real-world eating experiences.
Scientists focus their research on improving e-Taste technology performance through ongoing system development. Modern e-Tongue technology advances digital dining development though researchers need to develop additional capabilities for capturing all sensory aspects of food.