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20 April 2010 Rapid detection of total viable count of chilled pork using hyperspectral scattering technique
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A rapid nondestructive measurement method for determining the total viable count of chilled pork was studied. Chilled pork samples were purchased from supermarket and then stored in refrigerator at 4°C. Every 24 hours, hyperspectral images were collected from the chilled pork samples in 400-1100nm region, in parallel total viable counts were obtained by classical microbiological plating methods. The 3-parameter modified lorentzian distribution function was applied to fit the scattering profiles of all samples and the fitting results were satisfactorily high in region 470-943 nm. Then the parameters extracted were used to establish PLSR models. The prediction results for the parameter a, b, c, b×c are 0.945, 0.918, 0.919, 0.935 respectively. The study show that the hyperspectral technology can accurately tracks the increase of total viable count of chilled pork during 2-14 days storage at 4°C, and so indicate it a valid tool for assessing the quality and safety properties of chilled pork rapidly and nondestructively in the future.
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Yankun Peng, Feifei Tao, Yongyu Li, Wei Wang, Jingjing Chen, Jianhu Wu, and Sagar Dhakal "Rapid detection of total viable count of chilled pork using hyperspectral scattering technique", Proc. SPIE 7676, Sensing for Agriculture and Food Quality and Safety II, 76760K (20 April 2010);

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