Brazilian researchers have developed a method to verify Scotch whisky brands and counterfeits based on UV spectroscopy combined with partial least squares for discriminant analysis (PLS-DA). The methods was developed using a reference set of 7 brands of whisky (6 Scotch and 1 Brazilian). The method was validated with an independent test set of authentic samples belonging to the seven reference brands, and another eleven brands not included in the training samples. Furthermore, seventy-three counterfeit samples were also used to validate the method. Results showed correct classification rates for genuine and false samples over 98.6% and 93.1%, respectively.
Read the abstract at: UV verification of whisky brands
