2026-04-14T03:36:42Zhttps://recercat.cat/oai/request

oai:recercat.cat:20.500.12327/34572025-10-22T11:26:31Zcom_2072_4428com_2072_4427col_2072_487898

00925njm 22002777a 4500 dc Torres-Cobos, B. author Tres, A. author Vichi, S. author Guardiola, F. author Rovira, Merce author Romero, Agusti author Baeten, V. author Fernández-Pierna, J.A. author 2024-11-01 Hazelnut market prices fluctuate significantly based on cultivar and provenance, making them susceptible to counterfeiting. To develop an accurate authentication method, we compared the performances of three spectroscopic methods: near infrared (NIR), handheld near infrared (hNIR), and medium infrared (MIR), on over 300 samples from various origins, cultivars, and harvest years. Spectroscopic fingerprints were used to develop and externally validate PLS-DA classification models. Both cultivar and origin models showed high accuracy in external validation. The hNIR model effectively distinguished cultivars but struggled with geographic distinctions due to lower sensitivity. NIR and MIR models showed over 93% accuracy, with NIR slightly outperforming MIR for geographicorigin. NIR proved to be a fast and suitable tool for hazelnut authentication. This study is the first to systematically compare spectroscopic tools for authenticating hazelnut cultivar and origin using the same dataset, offering valuable insights for future food authentication applications. Torres-Cobos, B., A. Tres, S. Vichi, F. Guardiola, M. Rovira, A. Romero, V. Baeten, and J.A. Fernández-Pierna. 2025. “Comparative analysis of spectroscopic methods for rapid authentication of hazelnut cultivar and origin”. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 326: 125367. doi: 10.1016/j.saa.2024.125367 1386-1425 http://hdl.handle.net/20.500.12327/3457 https://doi.org/10.1016/j.saa.2024.125367 Comparative analysis of spectroscopic methods for rapid authentication of hazelnut cultivar and origin