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. 2019 Nov:157:107889.
doi: 10.1016/j.meatsci.2019.107889. Epub 2019 Jul 11.

CIELAB color paths during meat shelf life

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CIELAB color paths during meat shelf life

Begoña Hernández Salueña et al. Meat Sci. 2019 Nov.

Abstract

Meat color evolution from freshly cut to beyond shelf life, up to 40% of metmyoglobin, has been theoretically modeled using the Kubelka-Munk theory and a set of measured reference reflectance spectra of deoxymyoglobin, oxymyoglobin and metmyoglobin. Color evolution depicts characteristic color paths in CIELAB color space. During oxidation the model explains the approximately constancy of L*, b* and hab, with variations typically hidden by sample dispersion, and the special significance of a* and C* in relation with metmyoglobin formation. CIELAB ΔE* color difference and the reflectance ratio R630/R580 are even better indicators of metmyoglobin changes during oxidation. The role of a*, C*, ΔE* and R630/R580 and their relationship during oxidation is a normal feature in the model with quantitative predictions in general agreement with literature. Results further emphasize the dangers of reporting color coordinates in different illuminants.

Keywords: CIE Illuminants; CIELAB; Kubelka-Munk; Meat color; Myoglobin.

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