Scientists have built an AI-powered 'electronic tongue'

Skyler Ware is a freelance science journalist covering chemistry, biology, paleontology and Earth science. She was a 2023 AAAS Mass Media Science and Engineering Fellow at Science News. Her work has also appeared in Science News Explores, ZME Science and Chembites, among others. Skyler has a Ph.D. in chemistry from Caltech.

Ever wondered if that old carton of fruit juice in the back of your fridge is still safe to drink? A new “electronic tongue” could tell you.

"We’re trying to make an artificial tongue, but the process of how we experience different foods involves more than just the tongue," said study co-author Saptarshi Das, an engineer at Penn State University, in a statement."We have the tongue itself, consisting of taste receptors that interact with food species and send their information to the gustatory cortex — a biological neural network.

By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.They then tested the tongue on real-world beverages. The system could distinguish between similar soft drinks or coffee blends, assess whether milk has been watered down, identify when fruit juice has gone bad and detect harmful per- and poly-fluoroalkyl substances in water, they found.

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