Methods for distinguishing between authentic and counterfeit Scotch whisky brands have been devised by scientists at Strathclyde University.
Date:
Tue, 26 Jul 2011
Source:
University of Strathclyde
University of Strathclyde:
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Professor David Littlejohn, who led the research, said: “The whisky industry has tools at its disposal for telling authentic and counterfeit whisky brands apart but many of them involve lab-based analysis, which isn’t always the most convenient system if a sample needs to be identified quickly.
“There’s a growing need for methods that can provide simpler and faster identification and we have developed a method which could be adapted for devices to use on site, without the need to return samples to a lab. It could be of great benefit to an industry which is hugely important to the economy.”
The researchers analysed 17 samples of blended whisky, looking at the concentration of ethanol in the samples without diluting them and the residue of dried whisky. They did so with mid-infrared spectrometry, used with immersion probes that incorporate novel optical fibres developed by Scottish based company Fibre Photonics Ltd who co-sponsored the research. The procedures developed can provide prompt, accurate analysis without the complexity and cost of some other systems.
The levels of ethanol and colourant led them to identify correctly the eight authentic and nine counterfeit samples.
Financial support for the project was provided by the Scottish Funding Council (SFC), Fibre Photonics Ltd and WestCHEM, a joint research school formed by the Universities of Strathclyde and Glasgow. The SFC funding was for a studentship through its SPIRIT (Strategic Priority Investments in Research and Innovation Translation) programme. The project research paper has been published in Analytica Chimica Acta.
Read the Research Paper
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