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- W3180705890 abstract "Abstract Microstructural factors associated with surface iridescence in cooked, cured pork products were investigated. Meat iridescence is a commonly observed physical phenomenon in raw meat and meat products that consist of intact muscle tissue. Since the purchase decision of consumers is mainly driven by the first impression of meat color and appearance, products showing colorful iridescence may be rejected. Four different muscles (RF : M. rectus femoris , BF: M. biceps femoris , ST: M. semitendinosus , and LD: M. longissimus thoracis et lumborum ) were brine‐injected, cooked, sliced, and iridescence was evaluated by digital image analysis and sensory analysis. Sarcomere lengths, fiber diameters, and surface microstructure were analyzed in iridescent and noniridescent sections. Highest iridescence extent by image analysis was found in LD (37.3 ± 16.4%), and highest overall iridescence score (extent and intensity, 6.11 ± 1.78) was observed in BF. Sarcomere lengths did not differ significantly between iridescent (1.05 ± 0.09 µm LD) and noniridescent areas (1.08 ± 0.94 µm LD) within muscles ( p > 0.05). Iridescent sections showed smooth and ordered surface structures with cross‐sectioned myofibers, whereas in noniridescent sections, surfaces were more unstructured and myofibers obliquely cut. The results of the study indicate that the sarcomere length and fiber diameters may thus be only of minor importance for the explanation of meat iridescence in cooked meat products and are rather related to multiple scattering and absorption effects on smaller structural entities such as the myofilament lattice or larger entities such as fiber bundles. Practical application Iridescence can be a problem for the meat industry due to consumers concerns about green‐iridescent colors in meat. The underlying mechanisms and structures have not yet been fully clarified, and thus no practical solutions to eliminate iridescence have been found so far. This research presents new insights into the structural attributes that are interrelated with meat iridescence and shows that iridescence is rather influenced by cutting angle of muscle fibers and surface homogeneity than by muscle fiber diameters or sarcomere lengths. This should be considered by the industry when seeking for ways to reduce the potential problem of iridescence." @default.
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- W3180705890 date "2021-07-15" @default.
- W3180705890 modified "2023-09-25" @default.
- W3180705890 title "Influence of muscle type and microstructure on iridescence in cooked, cured pork meat products" @default.
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- W3180705890 doi "https://doi.org/10.1111/1750-3841.15832" @default.
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