An artificial “Tongue” of gold to taste maple syrup

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Maple syrup is Quebec’s liquid gold. Now scientists at Université de Montréal have found a way to use real gold — in the form of nanoparticles — to quickly find out how the syrup tastes.

The new method — a kind of artificial tongue — is validated in a study published today in Analytical Methods, the journal of the Royal Society of Chemistry, in the United Kingdom.

The “tongue” is a colorimetric test that detects changes in colour to show how a sample of maple syrup tastes. The result is visible to the naked eye in a matter of seconds and is useful to producers.

“The artificial tongue is simpler than a human tongue: it can’t distinguish the complex flavour profiles that we can detect,” said UdeM chemistry professor Jean-François Masson, who led the study. “Our device works specifically to detect flavor differences in maple syrup as it’s being produced.”

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