Detection and Classification of Hydrolyzed Dairy Additives Using Electronic Noses

VOROBIOFF, JUAN; ADARO, M.; BOGGIO, NORBERTO G; MAGALLANES, J.; BOSELLI, ALFREDO; ALBERTO LAMAGNA; RINALDI, CARLOS ALBERTO

SENSOR LETTERS

AMER SCIENTIFIC PUBLISHERS

Lugar: California; Año: 2018 vol. 16 p. 1 - 5

1546-198X

In the present work the classification of dairies additives in a rapid and simple way, is proposed. Measurements were made by means of an Electronic Nose developed in our laboratories, whichwe named ?Patagonia E-Nose.? This E-Nose is composed of SnO2 sensors located in a thermally stabilized chamber which improves the  repeatability of the measurements. Samples of various hydrolyzed dairies were measured using air as a reference gas. Then, the integrals of the signals were analyzed using a combination of different multivariate chemometric methods such as linear discriminant analysis (LDA), principal components analysis (PCA), back-propagation neural networkand different classifiers. Also, different algorithms were implemented and compared by calculating the number of correctly classified samples of each method. 99.4% of correct classifications were obtained by using cross-validation and selecting the most appropriate algorithms. The results indicate that the samples were correctly classified through the implementation of a simple and low cost measurement protocol.