RT journal article T1 Application of FT-IR and machine learning in the characterization of organic and biodynamic wines vs conventional wines A1 Pérez Calle, José Luis A1 Ferrari, Leonardo A1 Ruiz Rodríguez, Ana A1 Ferreiro González, Marta A1 Palma Lovillo, Miguel A2 Química Analítica K1 Wine authentication K1 Sustainable agriculture K1 Machine learning algorithms K1 Organic wine K1 FT-IR spectroscopy K1 Biodynamic wines AB In this study, Fourier-transform infrared spectroscopy (FT-IR) combined with machine learning (ML) algorithms was employed to characterize wines according to the specific viticulture and winemaking practices (conventional, organic, and biodynamic). A total of 83 wine samples, including both red and white varieties, were analyzed. FT-IR spectral data were processed using unsupervised methods, such as principal component analysis (PCA), and supervised classification algorithms, including random forest (RF), support vector machines (SVM), and linear discriminant analysis (LDA). PCA showed a clear distribution between white and red wines, although no evident clustering was observed based on specific vineyard and winemaking practices. Conversely, the application of supervised algorithms (SVM and RF) to the FT-IR data enabled accurate classification of white wines according to their production method, achieving 100 % accuracy on the test set for both models. In the case of red wines, the SVM model yielded the best performance, with an accuracy of 83.33 % in the test set. These results highlight the potential of FT-IR spectroscopy combined with ML as a reliable approach for determining the production method of wine samples. Furthermore, a web-based platform has been developed to facilitate access to the implemented classification algorithms. PB Elsevier SN 2772-5022 YR 2026 FD 2026-03 LK http://hdl.handle.net/10498/39423 UL http://hdl.handle.net/10498/39423 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026