Near Infrared Spectroscopy Calibrations for Quantifying the Animal Species in Processed Animal Proteins

Author:

De la Haba María José1,Garrido-Varo Ana2,Pérez-Marín Dolores C.2,Guerrero José-Emilio2

Affiliation:

1. Department of Bromathology and Food Technology University of Córdoba, Campus de Rabanales, Ctra. Madrid-Cádiz, km 396, 14071 Córdoba, Spain

2. Department of Animal Production, University of Córdoba (UCO), Campus de Rabanales, Ctra. Nacional IV, km 396, 14071 Córdoba, Spain

Abstract

Near infrared (NIR) calibrations were developed for the instantaneous and simultaneous prediction of the animal species composition of processed animals proteins (PAPs). A total of 359 PAPs samples were used to built calibration and validation sets. Different derivatives and scatter correction pre-treatments were tested. Modified partial least squares regressions were developed for the prediction of the percentage of poultry by-products meal, pork meal, cattle meal, ruminant meal and non-ruminant meal in a mixture. All the equations presented R2 and ratio performance deviation ( RPD) values around 0.9 and 3, respectively. In the external validation procedure, the results obtained correspond well with the calibration statistics. This study shows the potential of NIR technology to quantify the animal species in PAPs and it clearly demonstrates the importance of the size and structure of the calibration set in the robustness of the equations.

Publisher

SAGE Publications

Subject

Spectroscopy

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