Article ID Journal Published Year Pages File Type
222687 Journal of Food Engineering 2016 7 Pages PDF
Abstract

•Hyperspectral information in the range of SW-NIR was used to assess salmon shelf life.•Packed salmon samples were analysed without manipulation.•Segmentation of fish tissues (lean and fat) using Knn model.•iPLS selected the 7 most correlated wavelengths (visible and NIR) with shelf life.

Ready-to-eat foods that does not receive a heat treatment before being consumed can be at risk of foodborne hazards and spoilage, so it would be of great interest to have a method for monitoring their safety. This work expands on and enhances previous successfully studies with hyperspectral imaging in the SW-NIR range. Specifically, a k-nearest-neighbours model was developed to classify the salmon tissue into white myocommata stripes (fat) and muscle (lean) tissue. Partial Least Squares models developed confirm that a spatial segmentation should be performed before a shelf life model can be calculated. Employing the fat spectra and only the 7 most correlated wavelengths, a support vector machine model was calculated to classify into days 0, 10, 20, 40 and 60 with 87.2% prediction accuracy. These results make the method developed very promising as a non-destructive method to analyse the shelf life of vacuum-packed chilled smoked salmon fillets.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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