Regional origin prediction of colombian coffee from the near-infrared spectroscopy technique – NIRS
Predicción del origen regional del café de Colombia a partir de la técnica de espectroscopia de infrarrojo cercano - NIRS
How to Cite
Gómez, C. R., Ortiz, A., & Osorio, V. (2022). Regional origin prediction of colombian coffee from the near-infrared spectroscopy technique – NIRS. Cenicafe Journal, 73(2), e73205. https://doi.org/10.38141/10778/73205
Colombia is the third largest coffee-producing country and the first source of mild-washed coffees in the world, remaining a key player in the international market. Although Colombian coffee has achieved its consolidation due to the quality attributes of the bean, it is necessary to develop tools that objectively support the identity of the various origins within the country, because environmental conditions change throughout the geographic zones, generating different cup characteristics as a result of the particularities of its production. This research evaluated the NIRS technique for the prediction of the origin of green coffee samples from eight producing departments in Colombia. To develop the calibration models, the discriminant statistical method used was RMS (Root Mean Square) X Residuality, using the standard Normal Variation Scatter (SVN) and Detrend correction with the mathematical treatment 2,4,4,1 (derivative, gap, and smooth), to decrease the spectral noise generated by the sample characteristics. The results showed a global average classification accuracy of 92%, highlighting the departments of Antioquia and Nariño, and the Sierra Nevada area, with 98%, 99%, and 97%, respectively. The model developed by production areas (North, Central, and South Zone) presented a global mean accuracy of 89%. The research results confirm that the NIRS technique allows the prediction of the regional origin of Colombian coffee.
Author biography (See)
Claudia Rocío Gómez, Centro Nacional de Investigaciones de Café
Asistente de Investigación, Disciplina de Calidad. Cenicafé
Aristóteles Ortiz, Centro Nacional de Investigaciones de Café
Investigador Científico I, Disciplina Fisiología Vegetal. Cenicafé
Valentina Osorio, Centro Nacional de Investigaciones de Café
Investigador Científico I, Disciplina de Calidad. Cenicafé
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