title: Classification of dry-cured hams according to the maturation time using near infrared spectra and artificial neural networks.
abstract: An attempt to classify dry-cured hams according to the maturation time on the basis of near infrared (NIR) spectra was studied. The study comprised 128 samples of biceps femoris (BF) muscle from dry-cured hams matured for 10 (n=32), 12 (n=32), 14 (n=32) or 16 months (n=32). Samples were minced and scanned in the wavelength range from 400 to 2500 nm using spectrometer NIR System model 6500 (Silver Spring, MD, USA). Spectral data were used for i) splitting of samples into the training and test set using 2D Kohonen artificial neural networks (ANN) and for ii) construction of classification models using counter-propagation ANN (CP-ANN). Different models were tested, and the one selected was based on the lowest percentage of misclassified test samples (external validation). Overall correctness of the classification was 79.7%, which demonstrates practical relevance of using NIR spectroscopy and ANN for dry-cured ham processing control.
authors.affiliation: University of Maribor, Faculty of Agriculture and Life Sciences, Pivola 10, 2311 Hoče, Slovenia.
authors.forename: M
authors.initials: M
authors.lastname: Prevolnik
authors.forename: D
authors.initials: D
authors.lastname: Andronikov
authors.forename: B
authors.initials: B
authors.lastname: Žlender
authors.forename: M
authors.initials: M
authors.lastname: Font-i-Furnols
authors.forename: M
authors.initials: M
authors.lastname: Novič
authors.forename: D
authors.initials: D
authors.lastname: Škorjanc
authors.forename: M
authors.initials: M
authors.lastname: Čandek-Potokar
mesh_terms: D000818:Animals; D003890:Desiccation; D005511:Food Handling / Q000379:methods*; D008461:Meat Products / Q000145:classification*; D008954:Models, Biological; D018482:Muscle, Skeletal / Q000737:chemistry; D016571:Neural Networks, Computer; D015203:Reproducibility of Results; D019265:Spectroscopy, Near-Infrared; D013552:Swine
keywords: Artificial neural networks; Classification; Dry-cured ham; Near infrared spectroscopy