ArticleCurrent research in food science2026
Near-infrared hyperspectral imaging combined with elemental and isotopic analyses reflects geographical origins of cultured salmonids.
Article in Current research in food science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The geographical tracing of high-value salmonids is essential in mitigating food fraud and ensuring authenticity. This study combined hyperspectral imaging with elemental/isotopic profiling to reflect geographical origin information of salmonids and improve the explainability of discrimination models. Pearson correlation analysis was conducted using spectra and elements/isotopes for spectral fingerprinting, followed by developing machine/deep learning models with full spectra and extracted spectral features, respectively. The key isotopes and elements were further predicted using random forest modeling. The results indicated elements and isotopes highly correlating with spectral regions around 900, 1000, and 1200 nm, reflecting important spectral profiling of geographical origins for fresh salmonid products. Further, all discrimination models achieved acceptable overall accuracies (>65 %), with SFS-ELM achieved the highest precision (88.13 %). Key elements/isotopes were satisfactorily predicted (R
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