Article
Comparative Study on the Use of Three Different Near Infrared Spectroscopy Recording Methodologies for Varietal Discrimination of Walnuts
Author/s | Nogales Bueno, Julio
![]() ![]() ![]() ![]() ![]() ![]() ![]() Feliz, Luis Baca Bocanegra, Berta ![]() ![]() ![]() ![]() ![]() ![]() ![]() Hernández Hierro, José Miguel ![]() ![]() ![]() ![]() ![]() ![]() ![]() Heredia Mira, Francisco José ![]() ![]() ![]() ![]() ![]() ![]() ![]() Barroso, João Manuel Rato, Ana Elisa |
Department | Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal |
Publication Date | 2020 |
Deposit Date | 2024-03-08 |
Published in |
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Abstract | Walnut fruit (Juglans regia L.) is an internationally well-known product with an important tradition of consumption. Its health benefits and economic importance in the food industry make this nut an interesting research ... Walnut fruit (Juglans regia L.) is an internationally well-known product with an important tradition of consumption. Its health benefits and economic importance in the food industry make this nut an interesting research topic. In this feasibility study, 200 walnut samples of 5 different varieties were collected and their near infrared (NIR) spectra were recorded with 3 different devices: a benchtop Fourier transform near infrared (FT-NIR) spectrograph, a dispersive hyperspectral imaging camera and a portable NIR dispersive spectrograph. Discriminant analyses were applied and different methods for the varietal discrimination of walnuts were obtained and compared. Up to 96 and 84% of correct identification were respectively obtained in internal (training set) and external validations. Better results were obtained covering the entire shell surface than collecting a unique random spectrum per sample. Moreover, FT-NIR and hyperspectral tools produced classification models with a lower classification error in internal and external validations than the portable NIR one. |
Funding agencies | Fundação para a Ciência e a Tecnologia. Portugal |
Project ID. | UID/AGR/00115/2013
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Citation | Nogales Bueno, J., Feliz, L., Baca Bocanegra, B., Hernández Hierro, J.M., Heredia Mira, F.J., Barroso, J.M. y Rato, A.E. (2020). Comparative Study on the Use of Three Different Near Infrared Spectroscopy Recording Methodologies for Varietal Discrimination of Walnuts. Talanta, 206, 120189. https://doi.org/10.1016/j.talanta.2019.120189. |
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