RT journal article T1 Machine learning-assisted spectroscopic methods for detecting adulteration in Barrantes wine from Folla Redonda grapes A1 Aliaño González, María José A1 Vázquez Espinosa, María de las Mercedes A1 Velasco González de Peredo, Ana A1 Chinchilla Salcedo, Nuria A1 Fernández Barbero, Gerardo A1 Palma Lovillo, Miguel A1 Carrera Fernández, Ceferino Adrián A2 Química Analítica A2 Química Orgánica K1 Folla Redonda K1 Barrantes wine K1 Adulteration K1 Vis-NIRS K1 FTIR K1 Machine learning K1 SVM AB The present study explores the application of advanced machine learning algorithms combined with vis-NIRS and FTIR spectroscopy to detect and quantify adulteration in Barrantes wine, produced from the Folla Redonda grape, a variety exclusive to the Galicia region in Spain. Given the unique characteristics of Folla Redonda grapes, such as their distinctive phenolic profile and high antioxidant content, Barrantes wine is at risk of adulteration with lower-quality red wines. The study employs a variety of preprocessing techniques, including normalization and derivative transformations, and evaluates classification models such as Support Vector Machines (SVM), Partial Least Squares Discriminant Analysis (PLS-DA), and Random Forest (RF) for detecting adulteration at varying levels (10 % – 60 %). The findings show that SVM with SNV preprocessing provides the highest accuracy for vis-NIRS and FTIR data (100 %). Furthermore, regression models, particularly SVMRadial, were used to predict the level of adulteration with high precision (R2 > 0.95; RMSE <11 %). This research is pioneering in its field, as it is the first to optimize machine learning techniques for adulteration detection in wine. The findings provide a valuable tool for quality control in the agro-food sector, specifically for niche wines like Barrantes. The results of this study underscore the potential for rapid, precise, and non-destructive analysis through the integration of these approaches. PB Elsevier SN 1386-1425 YR 2026 FD 2026 LK http://hdl.handle.net/10498/39060 UL http://hdl.handle.net/10498/39060 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 04-nov-2026