Evaluación de la espectometría de infrarrojo cercano (NIR) para estimación de TBVN en control de calidad de material prima pesquera
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Authors
Yabiku Torrejon, Blanca Harumi
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Abstract
El presente trabajo de suficiencia profesional tuvo como objetivo evaluar el desempeño del espectrómetro NIR como herramienta de apoyo para la estimación de TBVN en el control de calidad de materia prima pesquera, determinando su concordancia con el método clásico de referencia y su utilidad práctica en la toma de decisiones operativas en planta. Para ello, se compararon los resultados obtenidos mediante el método clásico de referencia Kjeldahl con los resultados generados por el equipo NIR. El estudio se realizó con 144 muestras, por duplicado, de materia prima recepcionadas en diferentes sedes de una empresa procesadora de harina de pescado, durante la primera temporada de pesca Centro-Norte 2025. Las repeticiones de la muestra no mostraron diferencias significativas en su desviación estándar (Desv. Std.< 0.1) y un coeficiente de varianza (CV < 1%). Para la curva histórica de la empresa el valor del coeficiente de determinación (R2) fue de 0.79, mientras que su coeficiente de correlación (r) de 0.888, ambos valores contemplados en el rango de aceptabilidad (0.6 a 1). Los resultados evidenciaron que existe una correlación entre el método de referencia y los del método NIR, con valores dentro del rango histórico de la empresa (Desv. Std diferencial = 3.626).
The aim of this professional sufficiency project was to assess the performance of the NIR spectrometer as a tool to assist in estimating total volatile nitrogen (TBVN) in the quality control of fishery raw materials, determining its agreement with the classical reference method and its practical utility in operational decision-making at the plant. To this end, the results obtained using the classical Kjeldahl reference method were compared with those generated by the NIR equipment. The study was conducted using 144 duplicate samples of raw materials received at different sites of a fishmeal processing company during the first Central-North fishing season of 2025. The simple replicates showed no significant differences in their standard deviation (Std. Dev. <0.1) and a coefficient of variation (CV < 1%). For the company’s historical curve, the coefficient of determination (R2) was 0.79, whilst the correlation coefficient (r) was 0.888; both values fall within the acceptable range (0.6 to 1). The results showed that there is a correlation between the reference method and the NIR method, with values within the company’s historical range (differential Std. Dev. = 3.626).
The aim of this professional sufficiency project was to assess the performance of the NIR spectrometer as a tool to assist in estimating total volatile nitrogen (TBVN) in the quality control of fishery raw materials, determining its agreement with the classical reference method and its practical utility in operational decision-making at the plant. To this end, the results obtained using the classical Kjeldahl reference method were compared with those generated by the NIR equipment. The study was conducted using 144 duplicate samples of raw materials received at different sites of a fishmeal processing company during the first Central-North fishing season of 2025. The simple replicates showed no significant differences in their standard deviation (Std. Dev. <0.1) and a coefficient of variation (CV < 1%). For the company’s historical curve, the coefficient of determination (R2) was 0.79, whilst the correlation coefficient (r) was 0.888; both values fall within the acceptable range (0.6 to 1). The results showed that there is a correlation between the reference method and the NIR method, with values within the company’s historical range (differential Std. Dev. = 3.626).
Description
Universidad Nacional Agraria La Molina. Facultad de Pesquería. Departamento
Académico de Acuicultura e Industrias Pesqueras
Keywords
Kjeldahl
Citation
Date
2026
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