Characterization of deterioration of fallow deer and goat meat using microbial and mid infrared spectroscopy in tandem with chemometrics. (March 2018)

• Record Type: Journal Article
• Authors: Moreira, Maria João Pinho; Silva, Ana C.; de Almeida, José M.M.M.; Saraiva, Cristina
• Is Part Of: Food packaging and shelf life. Volume 15(2018)
• Page Start: 169
• Page End: 180
• Publication Date: 2018-03
• Subjects: Game meat deterioration -- Infrared spectroscopy -- Partial least squares regression; Food -- Packaging -- Periodicals; Food -- Preservation -- Periodicals; Food -- Packaging; Periodicals; 664.0905
• DOI: 10.1016/j.fpsl.2018.01.010
• Languages: English
• ISSNs: 2214-2894

Abstract

Highlights: Characterization deterioration game species and species grow in the wild using FTIR spectroscopy. Spectroscopic data are correlated with sensory analysis of freshness. Using multivariate regressions, microbial loads are predicted from FTIR data. Abstract: It is established that FTIR with chemometrics is a reliable technique to predict deterioration of meat from game species and from species grown in the wild such as, fallow deer and goat. Meat was minced and stored for periods of 12–432 h and examined for FTIR, pH, lipid oxidation, microbiological analysis, colour, and sensory analysis (SA). Spectral data was analysed with PCA and LDA. PLS-R was employed to establish relationships between spectral data and the microbiological counts. From PCA it was determined that wavenumber from 1656 to 1002 cm −1 are linked to alterations during storage. LDA of spectral data was applied to sustain SA data. For fallow deer the room mean square error of prediction values for external samples were 0.75, 0.61, 0.81 and 0.73 log cfu g −1, for TVC, psychrotrophs, LAB, and Enterobacteriaceae, respectively. For goat, the corresponding values were 0.74, 0.68, 0.78 and 0.79 log cfu g −1 . FTIR spectroscopy can be used as a reliable method for assessment of freshness of meat from fallow deer and goat during storage.