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The Analytical Scientist / Issues / 2020 / Nov / Weeding Out Whiskey Wannabes
Food, Beverage & Agriculture Spectroscopy

Weeding Out Whiskey Wannabes

How spectroscopy helps authenticate whiskey – without wasting a precious drop

By Lauren Robertson 11/24/2020 1 min read

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According to the European Union’s Intellectual Property Office, counterfeit drinks cost the EU €1.3 billion in lost revenue each year. Kishan Dholakia and his team from the University of St Andrews in Fife, Scotland, set out to find a way to catch the crooks in a non-destructive manner – saving the liquor for the whiskey lovers.

They used fluorescence and Raman spectroscopy to collect the unique spectral signatures of different whiskeys. Importantly, the new method allows the spectra of the golden liquid to be directly collected from within the glass bottle.

“We generated a unique beam that looks like a ring on the glass surface and then focuses to a concentric set of rings with a small spot inside the liquid,” says Dholakia. The approach is more straightforward and accurate compared with similar techniques. And it can be applied to other alcoholic beverages (including gin, vodka, and wine) or olive oil – another commonly counterfeited commodity. In the future, the team hopes to use the same principle for collecting Raman spectra at depth in biological tissues.

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References

  1. H Fleming et al., Anal Methods, 12, 4572 (2020). DOI: 10.1039/D0AY01101K

About the Author(s)

Lauren Robertson

By the time I finished my degree in Microbiology I had come to one conclusion – I did not want to work in a lab. Instead, I decided to move to the south of Spain to teach English. After two brilliant years, I realized that I missed science, and what I really enjoyed was communicating scientific ideas – whether that be to four-year-olds or mature professionals. On returning to England I landed a role in science writing and found it combined my passions perfectly. Now at Texere, I get to hone these skills every day by writing about the latest research in an exciting, creative way.

More Articles by Lauren Robertson

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