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Meat Sci ; 184: 108660, 2022 Feb.
Article in English | MEDLINE | ID: mdl-34736839

ABSTRACT

Commercially harvested cull dairy cow carcasses (n = 64) from the two lowest-valued marketing classes (MC: Lean, LE; Light, LI) were conventionally chilled (CN) or vascularly rinsed with a chilled isotonic substrate solution (Rinse & Chill®; RC). Longissimus lumborum (LL) and Triceps brachii (TB) muscles were processed (steaks, ground). Early postmortem (first 24 h), RC resulted in a lower pH at each time measured. RC steaks had longer sarcomeres and lower shear force than CN. RC produced greater redness associated with blooming and display times. RC LE beef resulted in greater oxymyoglobin during display times. RC ground TB had greater moisture fat-free than CN. RC Lean LL had less purge loss compared to CN LE. RC had greater total pigments than CN. RC ground TB had greater oxygen consumption and lower thiobarbituric acid reactive substances compared to CN. RC has the potential to improve tenderness and color as well as limit lipid oxidation with similar benefits across the two marketing classes.


Subject(s)
Food Handling/methods , Food Quality , Red Meat/analysis , Animals , Cattle , Female , Hydrogen-Ion Concentration , Muscle, Skeletal/chemistry , Myoglobin/analysis , Red Meat/classification , Refrigeration/methods , Shear Strength , Thiobarbituric Acid Reactive Substances
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