Abstract
This study developed principal component analysis and radial basis function neural networks (PCA-RBFNNs) for predicting freshness in tilapia fillets stored at different temperatures by integrating an electronic nose and electronic tongue. Total volatile basic nitrogen (TVB-N), total aerobic counts (TAC), and K value increased at 0, 4, 7, and 10 °C, while sensory scores decreased significantly. The electronic nose and tongue acquired the volatiles and dissolved chemical compounds in the stored samples. Gas chromatography-mass spectrometry (GC-MS) verified the changes in gas species and contents in fillets stored for different periods of time at different temperatures. PCA-RBFNNs based on data fusion were developed and presented good performance for prediction of TVB-N, TAC, K value, and sensory score in tilapia fillets. The established PCA-RBFNNs based on feature variables of the electronic nose and tongue is a promising method to predict changes in the freshness of fillets stored from 0 to 10 °C in the cold chain.
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This study was supported by Beijing Municipal Natural Science Foundation (6174040), the Beijing Agricultural Forestry Academy Foundation (QNJJ201720), and the National Key Research and Development Program in the 13th Five-Year Plan (2016YFD0401205).
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Shi, C., Yang, X., Han, S. et al. Nondestructive Prediction of Tilapia Fillet Freshness During Storage at Different Temperatures by Integrating an Electronic Nose and Tongue with Radial Basis Function Neural Networks. Food Bioprocess Technol 11, 1840–1852 (2018). https://doi.org/10.1007/s11947-018-2148-8
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DOI: https://doi.org/10.1007/s11947-018-2148-8