ArticleFrontiers in nutrition2026
Non-destructive quality assessment and species identification of blood tofu using portable visible/near-infrared spectroscopy.
Article in Frontiers in nutrition, 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
Introduction: The identification and quality monitoring of blood-based meat by-products represent critical challenges in the meat industry. This study investigates the feasibility of portable visible/near-infrared (Vis-NIR) spectroscopy as a rapid, non-destructive analytical tool for quality assessment and species identification of duck and pig blood tofu during refrigerated storage at 4°C. The development of reliable spectroscopic methods is essential for ensuring product integrity and preventing fraud in meat processing. Methods: Blood tofu samples from duck and pig sources were stored at 4°C for 15 days. A total of 180 blood tofu samples, comprising 90 duck blood tofu and 90 pig blood tofu samples, were utilized for quality assessment and species identification. Physicochemical parameters including total volatile basic nitrogen (TVB-N) and pH, color coordinates (CIE Results and Discussion: PLS regression models demonstrated satisfactory predictive performance for color parameters, achieving correlation coefficients approaching or exceeding 0.90 for
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