Table 1.
Examples of UV–visible spectroscopy in combination with chemometrics for wine authentication.
| Spectroscopic Technique | Spectral Range | Parameters for Authentication |
Classification Method 1 | Remark | Reference |
|---|---|---|---|---|---|
| UV–Vis | 200–800 nm | Geographical origin (Spanish denomination of origin) | SVM | Correct classification rates above 96% | [18] |
| UV–Vis | 200–500 nm | Geographical origin of Argentinian regions | PCA, LDA, PLS-DA | Correct classification with LDA and PLS-DA methods of 100% | [19] |
| UV–Vis | 300–800 nm | Discrimination by origin, grape variety and ageing process | PCA, SIMCA | Correct classification of 90% for geographical origin, and 75% for variety and ageing process | [20] |
| UV–Vis | 240–700 nm | Discrimination according to grape variety, ageing process and barrel/container type | OPLS-DA | Correct classification of 97% for variety, 73% for ageing process and 100% for container type | [21] |
1 SVM, support vector machine; PCA, principal component analysis; LDA, linear discriminant analysis; PLS-DA, partial least squares-discriminant analysis; SIMCA, soft independent modelling of class analogy; OPLS-DA, orthogonal projections to latent structures discriminant analysis.