Transformation of highly marbled meats under various cooking processes
2022
Anne, Duconseille | Thierry, Astruc | Keisuke, Sasaki | Michiyo, Motoyama
Cooking induces modifications in meat structure and composition, affecting its sensory and nutritional properties. These changes depend on the cooking method and meat characteristics. In the present study, beef were cooked in three different ways—grilling, boiling, and sous-vide cooking—with two endpoint temperatures, 55 °C and 77 °C, to better understand the general impact of cooking on the structure of fatty meat. Light microscopy was used to visualize muscle, connective, and adipose tissues. After cooking, muscle fibers were more compact, which can be attributed to perimysium shrinkage and water transfer, for all cooking processes except grilling at 55 °C. The cross-sectional area of muscle fibers was not impacted by cooking, regardless of the temperature or cooking method. Connective tissue between adipocytes was affected by cooking at 77 °C, but not at 55 °C. Despite the cooking method used, cooking to well-done (77 °C) clearly affected the structure of the perimysium of beef, possibly because of collagen denaturation.
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